fix(deps): update module golang.org/x/crypto to v0.47.0

There has been a cyclic dependency.
transaction
	-> treasure_chest
	-> transaction_recurring
	-> transaction

This has been temporarily solved by moving the GenerateTransactions
function into the transaction package. In the future, this function has
to be rewritten to use a proper Service insteas of direct DB access or
replaced with a different system entirely.

.gitea/workflows/build.yaml

@@ -10,6 +10,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository code
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - run: docker build . -t spend-sparrow-test
       - run: docker rmi spend-sparrow-test

.gitea/workflows/buildAndPush.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository code
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - run: docker login git.wundenbergs.de -u tim -p ${{ secrets.DOCKER_GITEA_TOKEN }}
       - run: docker build . -t git.wundenbergs.de/x/spend-sparrow:latest -t git.wundenbergs.de/x/spend-sparrow:$GITHUB_SHA
       - run: docker push git.wundenbergs.de/x/spend-sparrow:latest

.gitignore

@@ -36,3 +36,5 @@ tmp/
 
 mocks/*
 !mocks/default.go
+
+arch.png

.golangci.yaml

@@ -26,6 +26,7 @@ linters:
     - bodyclose # i don't care in the tests, the implementation itself doesn't do http requests
     - wsl_v5
     - noinlineerr
+    - unqueryvet
   settings:
     nestif:
       min-complexity: 6

.mockery.yaml

@@ -3,11 +3,11 @@ dir: mocks/
 outpkg: mocks
 issue-845-fix: True
 packages:
-  spend-sparrow/internal/service:
+  spend-sparrow/internal/core:
     interfaces:
       Random:
       Clock:
       Mail:
-  spend-sparrow/internal/db:
+  spend-sparrow/internal/authentication:
     interfaces:
-      Auth:
+      Db:

.nvmrc

@@ -1 +1 @@
-24.6.0
+24.12.0

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.25.0@sha256:4859242e2c392ddc9d3225fd41181c00a443d9cc005b8e5131ce164106fbc676 AS builder_go
+FROM golang:1.25.5@sha256:0f406d34b7cb7255d0700af02ec28a2c88f1e00701055f4c282aa4c3ec0b3245 AS builder_go
 WORKDIR /spend-sparrow
 RUN go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 RUN go install github.com/a-h/templ/cmd/templ@latest
@@ -13,7 +13,7 @@ RUN golangci-lint run ./...
 RUN go build -o /spend-sparrow/spend-sparrow .
 
 
-FROM node:22.18.0@sha256:3266bc9e8bee1acc8a77386eefaf574987d2729b8c5ec35b0dbd6ddbc40b0ce2 AS builder_node
+FROM node:24.12.0@sha256:50113f9d3a239ce9e523550e46363d3a8ca7b58f6af70fd9ecb4698b2ad89ccb AS builder_node
 WORKDIR /spend-sparrow
 COPY package.json package-lock.json ./
 RUN npm clean-install
@@ -21,7 +21,7 @@ COPY . ./
 RUN npm run build
 
 
-FROM debian:13.0@sha256:6d87375016340817ac2391e670971725a9981cfc24e221c47734681ed0f6c0f5
+FROM debian:13.3@sha256:5cf544fad978371b3df255b61e209b373583cb88b733475c86e49faa15ac2104
 WORKDIR /spend-sparrow
 RUN apt-get update && apt-get install -y ca-certificates && echo "" > .env
 COPY migration ./migration

arch.gv

@@ -0,0 +1,32 @@
+digraph { 
+  Tag
+  Transaction
+  Account
+  BankConnection
+  Analytics
+
+  // Buckets
+  Budget
+  RecurringCost
+  SavingGoal
+
+
+  // Analytics -> {
+  // 	  Budget
+  // 	  RecurringCost
+  // 	  SavingGoal
+  // 	  Tag
+  // 	  Transaction
+  // 	  Account
+  // } [label="uses"]
+
+  BankConnection -> Transaction [label="imports into"]
+  BankConnection -> Account [label="references"]
+
+  Transaction -> Account [label="references"]
+  Transaction -> Tag [label="references"]
+
+  Budget -> Tag [label="references"]
+  RecurringCost -> Tag [label="references"]
+  SavingGoal -> Tag [label="references"]
+} 

dev.sh

@@ -1,12 +1,14 @@
-#!/bin/sh
+#!/bin/bash
 set -e
 go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
 go install github.com/a-h/templ/cmd/templ@latest
 go install github.com/vektra/mockery/v2@latest
 
-templ generate --watch --proxy="http://localhost:8080" --cmd="go run ." &
+templ generate --watch --cmd="go run ." &
+# proxy currently not working with gzip?
+# templ generate --watch --proxy="http://localhost:8080" --cmd="go run ." &
+xdg-open http://localhost:8080
 npm run watch
 
-read -n1 -s
-kill $(jobs -p)
-
+read -n1 -s -r
+kill "$(jobs -p)"

go.mod

@@ -1,55 +1,53 @@
 module spend-sparrow
 
-go 1.23.0
+go 1.24.0
 
-toolchain go1.25.0
+toolchain go1.25.5
 
 require (
-	github.com/a-h/templ v0.3.943
-	github.com/golang-migrate/migrate/v4 v4.18.3
+	github.com/a-h/templ v0.3.977
+	github.com/golang-migrate/migrate/v4 v4.19.1
 	github.com/google/uuid v1.6.0
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/joho/godotenv v1.5.1
-	github.com/mattn/go-sqlite3 v1.14.32
-	github.com/stretchr/testify v1.10.0
+	github.com/mattn/go-sqlite3 v1.14.33
+	github.com/stretchr/testify v1.11.1
 	github.com/uptrace/opentelemetry-go-extra/otelsql v0.3.2
 	github.com/uptrace/opentelemetry-go-extra/otelsqlx v0.3.2
-	go.opentelemetry.io/contrib/bridges/otelslog v0.12.0
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0
-	go.opentelemetry.io/otel v1.37.0
-	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.13.0
-	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.37.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.37.0
-	go.opentelemetry.io/otel/log v0.13.0
-	go.opentelemetry.io/otel/sdk v1.37.0
-	go.opentelemetry.io/otel/sdk/log v0.13.0
-	go.opentelemetry.io/otel/sdk/metric v1.37.0
-	go.opentelemetry.io/otel/trace v1.37.0
-	golang.org/x/crypto v0.41.0
-	golang.org/x/net v0.43.0
+	go.opentelemetry.io/contrib/bridges/otelslog v0.14.0
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0
+	go.opentelemetry.io/otel v1.39.0
+	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.15.0
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.39.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.39.0
+	go.opentelemetry.io/otel/log v0.15.0
+	go.opentelemetry.io/otel/sdk v1.39.0
+	go.opentelemetry.io/otel/sdk/log v0.15.0
+	go.opentelemetry.io/otel/sdk/metric v1.39.0
+	go.opentelemetry.io/otel/trace v1.39.0
+	golang.org/x/crypto v0.47.0
+	golang.org/x/net v0.48.0
 )
 
 require (
-	github.com/cenkalti/backoff/v5 v5.0.2 // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.1 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
-	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
-	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.37.0 // indirect
-	go.opentelemetry.io/otel/metric v1.37.0 // indirect
-	go.opentelemetry.io/proto/otlp v1.7.0 // indirect
-	go.uber.org/atomic v1.11.0 // indirect
-	golang.org/x/sys v0.35.0 // indirect
-	golang.org/x/text v0.28.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250603155806-513f23925822 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250603155806-513f23925822 // indirect
-	google.golang.org/grpc v1.73.0 // indirect
-	google.golang.org/protobuf v1.36.6 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.9.0 // indirect
+	golang.org/x/sys v0.39.0 // indirect
+	golang.org/x/text v0.32.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20251202230838-ff82c1b0f217 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217 // indirect
+	google.golang.org/grpc v1.77.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,11 +1,13 @@
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
-github.com/a-h/templ v0.3.943 h1:o+mT/4yqhZ33F3ootBiHwaY4HM5EVaOJfIshvd5UNTY=
-github.com/a-h/templ v0.3.943/go.mod h1:oCZcnKRf5jjsGpf2yELzQfodLphd2mwecwG4Crk5HBo=
-github.com/cenkalti/backoff/v5 v5.0.2 h1:rIfFVxEf1QsI7E1ZHfp/B4DF/6QBAUhmgkxc0H7Zss8=
-github.com/cenkalti/backoff/v5 v5.0.2/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/a-h/templ v0.3.977 h1:kiKAPXTZE2Iaf8JbtM21r54A8bCNsncrfnokZZSrSDg=
+github.com/a-h/templ v0.3.977/go.mod h1:oCZcnKRf5jjsGpf2yELzQfodLphd2mwecwG4Crk5HBo=
+github.com/cenkalti/backoff/v5 v5.0.3 h1:ZN+IMa753KfX5hd8vVaMixjnqRZ3y8CuJKRKj1xcsSM=
+github.com/cenkalti/backoff/v5 v5.0.3/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
@@ -15,21 +17,16 @@ github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
 github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
-github.com/golang-migrate/migrate/v4 v4.18.3 h1:EYGkoOsvgHHfm5U/naS1RP/6PL/Xv3S4B/swMiAmDLs=
-github.com/golang-migrate/migrate/v4 v4.18.3/go.mod h1:99BKpIi6ruaaXRM1A77eqZ+FWPQ3cfRa+ZVy5bmWMaY=
+github.com/golang-migrate/migrate/v4 v4.19.1 h1:OCyb44lFuQfYXYLx1SCxPZQGU7mcaZ7gH9yH4jSFbBA=
+github.com/golang-migrate/migrate/v4 v4.19.1/go.mod h1:CTcgfjxhaUtsLipnLoQRWCrjYXycRz/g5+RWDuYgPrE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
 github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.1 h1:X5VWvz21y3gzm9Nw/kaUeku/1+uBhcekkmy4IkffJww=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.1/go.mod h1:Zanoh4+gvIgluNqcfMVTJueD4wSS5hT7zTt4Mrutd90=
-github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
-github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
-github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3 h1:NmZ1PKzSTQbuGHw9DGPFomqkkLWMC+vZCkfs+FHv1Vg=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3/go.mod h1:zQrxl1YP88HQlA6i9c63DSVPFklWpGX4OWAc9bFuaH4=
 github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
 github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
@@ -41,72 +38,72 @@ github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
-github.com/mattn/go-sqlite3 v1.14.32 h1:JD12Ag3oLy1zQA+BNn74xRgaBbdhbNIDYvQUEuuErjs=
-github.com/mattn/go-sqlite3 v1.14.32/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
-github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
+github.com/mattn/go-sqlite3 v1.14.33 h1:A5blZ5ulQo2AtayQ9/limgHEkFreKj1Dv226a1K73s0=
+github.com/mattn/go-sqlite3 v1.14.33/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
+github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
 github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/uptrace/opentelemetry-go-extra/otelsql v0.3.2 h1:ZjUj9BLYf9PEqBn8W/OapxhPjVRdC6CsXTdULHsyk5c=
 github.com/uptrace/opentelemetry-go-extra/otelsql v0.3.2/go.mod h1:O8bHQfyinKwTXKkiKNGmLQS7vRsqRxIQTFZpYpHK3IQ=
 github.com/uptrace/opentelemetry-go-extra/otelsqlx v0.3.2 h1:zA9ZXfdtowo0EKt+t7uqXNlHxPeygrxuFSIroiBVgPU=
 github.com/uptrace/opentelemetry-go-extra/otelsqlx v0.3.2/go.mod h1:ySXmuW9JLCm/TjsQksuMY/7MNiWqfHnhH2xeT34uOLU=
-go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
-go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
-go.opentelemetry.io/contrib/bridges/otelslog v0.12.0 h1:lFM7SZo8Ce01RzRfnUFQZEYeWRf/MtOA3A5MobOqk2g=
-go.opentelemetry.io/contrib/bridges/otelslog v0.12.0/go.mod h1:Dw05mhFtrKAYu72Tkb3YBYeQpRUJ4quDgo2DQw3No5A=
-go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0 h1:Hf9xI/XLML9ElpiHVDNwvqI0hIFlzV8dgIr35kV1kRU=
-go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0/go.mod h1:NfchwuyNoMcZ5MLHwPrODwUF1HWCXWrL31s8gSAdIKY=
-go.opentelemetry.io/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
-go.opentelemetry.io/otel v1.37.0/go.mod h1:ehE/umFRLnuLa/vSccNq9oS1ErUlkkK71gMcN34UG8I=
-go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.13.0 h1:z6lNIajgEBVtQZHjfw2hAccPEBDs+nx58VemmXWa2ec=
-go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.13.0/go.mod h1:+kyc3bRx/Qkq05P6OCu3mTEIOxYRYzoIg+JsUp5X+PM=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.37.0 h1:zG8GlgXCJQd5BU98C0hZnBbElszTmUgCNCfYneaDL0A=
-go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.37.0/go.mod h1:hOfBCz8kv/wuq73Mx2H2QnWokh/kHZxkh6SNF2bdKtw=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.37.0 h1:Ahq7pZmv87yiyn3jeFz/LekZmPLLdKejuO3NcK9MssM=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.37.0/go.mod h1:MJTqhM0im3mRLw1i8uGHnCvUEeS7VwRyxlLC78PA18M=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.37.0 h1:EtFWSnwW9hGObjkIdmlnWSydO+Qs8OwzfzXLUPg4xOc=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.37.0/go.mod h1:QjUEoiGCPkvFZ/MjK6ZZfNOS6mfVEVKYE99dFhuN2LI=
-go.opentelemetry.io/otel/log v0.13.0 h1:yoxRoIZcohB6Xf0lNv9QIyCzQvrtGZklVbdCoyb7dls=
-go.opentelemetry.io/otel/log v0.13.0/go.mod h1:INKfG4k1O9CL25BaM1qLe0zIedOpvlS5Z7XgSbmN83E=
-go.opentelemetry.io/otel/metric v1.37.0 h1:mvwbQS5m0tbmqML4NqK+e3aDiO02vsf/WgbsdpcPoZE=
-go.opentelemetry.io/otel/metric v1.37.0/go.mod h1:04wGrZurHYKOc+RKeye86GwKiTb9FKm1WHtO+4EVr2E=
-go.opentelemetry.io/otel/sdk v1.37.0 h1:ItB0QUqnjesGRvNcmAcU0LyvkVyGJ2xftD29bWdDvKI=
-go.opentelemetry.io/otel/sdk v1.37.0/go.mod h1:VredYzxUvuo2q3WRcDnKDjbdvmO0sCzOvVAiY+yUkAg=
-go.opentelemetry.io/otel/sdk/log v0.13.0 h1:I3CGUszjM926OphK8ZdzF+kLqFvfRY/IIoFq/TjwfaQ=
-go.opentelemetry.io/otel/sdk/log v0.13.0/go.mod h1:lOrQyCCXmpZdN7NchXb6DOZZa1N5G1R2tm5GMMTpDBw=
-go.opentelemetry.io/otel/sdk/log/logtest v0.13.0 h1:9yio6AFZ3QD9j9oqshV1Ibm9gPLlHNxurno5BreMtIA=
-go.opentelemetry.io/otel/sdk/log/logtest v0.13.0/go.mod h1:QOGiAJHl+fob8Nu85ifXfuQYmJTFAvcrxL6w5/tu168=
-go.opentelemetry.io/otel/sdk/metric v1.37.0 h1:90lI228XrB9jCMuSdA0673aubgRobVZFhbjxHHspCPc=
-go.opentelemetry.io/otel/sdk/metric v1.37.0/go.mod h1:cNen4ZWfiD37l5NhS+Keb5RXVWZWpRE+9WyVCpbo5ps=
-go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mxVK7z4=
-go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
-go.opentelemetry.io/proto/otlp v1.7.0 h1:jX1VolD6nHuFzOYso2E73H85i92Mv8JQYk0K9vz09os=
-go.opentelemetry.io/proto/otlp v1.7.0/go.mod h1:fSKjH6YJ7HDlwzltzyMj036AJ3ejJLCgCSHGj4efDDo=
-go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
-go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
+go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
+go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
+go.opentelemetry.io/contrib/bridges/otelslog v0.14.0 h1:eypSOd+0txRKCXPNyqLPsbSfA0jULgJcGmSAdFAnrCM=
+go.opentelemetry.io/contrib/bridges/otelslog v0.14.0/go.mod h1:CRGvIBL/aAxpQU34ZxyQVFlovVcp67s4cAmQu8Jh9mc=
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+go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.64.0/go.mod h1:GQ/474YrbE4Jx8gZ4q5I4hrhUzM6UPzyrqJYV2AqPoQ=
+go.opentelemetry.io/otel v1.39.0 h1:8yPrr/S0ND9QEfTfdP9V+SiwT4E0G7Y5MO7p85nis48=
+go.opentelemetry.io/otel v1.39.0/go.mod h1:kLlFTywNWrFyEdH0oj2xK0bFYZtHRYUdv1NklR/tgc8=
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+go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.15.0/go.mod h1:JM31r0GGZ/GU94mX8hN4D8v6e40aFlUECSQ48HaLgHM=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.39.0 h1:cEf8jF6WbuGQWUVcqgyWtTR0kOOAWY1DYZ+UhvdmQPw=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.39.0/go.mod h1:k1lzV5n5U3HkGvTCJHraTAGJ7MqsgL1wrGwTj1Isfiw=
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+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.39.0 h1:in9O8ESIOlwJAEGTkkf34DesGRAc/Pn8qJ7k3r/42LM=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.39.0/go.mod h1:Rp0EXBm5tfnv0WL+ARyO/PHBEaEAT8UUHQ6AGJcSq6c=
+go.opentelemetry.io/otel/log v0.15.0 h1:0VqVnc3MgyYd7QqNVIldC3dsLFKgazR6P3P3+ypkyDY=
+go.opentelemetry.io/otel/log v0.15.0/go.mod h1:9c/G1zbyZfgu1HmQD7Qj84QMmwTp2QCQsZH1aeoWDE4=
+go.opentelemetry.io/otel/metric v1.39.0 h1:d1UzonvEZriVfpNKEVmHXbdf909uGTOQjA0HF0Ls5Q0=
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+go.opentelemetry.io/otel/sdk v1.39.0/go.mod h1:vDojkC4/jsTJsE+kh+LXYQlbL8CgrEcwmt1ENZszdJE=
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+go.opentelemetry.io/otel/sdk/log/logtest v0.14.0 h1:Ijbtz+JKXl8T2MngiwqBlPaHqc4YCaP/i13Qrow6gAM=
+go.opentelemetry.io/otel/sdk/log/logtest v0.14.0/go.mod h1:dCU8aEL6q+L9cYTqcVOk8rM9Tp8WdnHOPLiBgp0SGOA=
+go.opentelemetry.io/otel/sdk/metric v1.39.0 h1:cXMVVFVgsIf2YL6QkRF4Urbr/aMInf+2WKg+sEJTtB8=
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+go.opentelemetry.io/otel/trace v1.39.0 h1:2d2vfpEDmCJ5zVYz7ijaJdOF59xLomrvj7bjt6/qCJI=
+go.opentelemetry.io/otel/trace v1.39.0/go.mod h1:88w4/PnZSazkGzz/w84VHpQafiU4EtqqlVdxWy+rNOA=
+go.opentelemetry.io/proto/otlp v1.9.0 h1:l706jCMITVouPOqEnii2fIAuO3IVGBRPV5ICjceRb/A=
+go.opentelemetry.io/proto/otlp v1.9.0/go.mod h1:xE+Cx5E/eEHw+ISFkwPLwCZefwVjY+pqKg1qcK03+/4=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
-golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
-golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
-golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
-golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
-golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
-golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
-golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
-golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
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internal/account/handler.go

@@ -1,105 +1,96 @@
-package handler
+package account
 
 import (
-	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	t "spend-sparrow/internal/template/account"
-	"spend-sparrow/internal/types"
-	"spend-sparrow/internal/utils"
-
 	"github.com/a-h/templ"
+	"net/http"
+	"spend-sparrow/internal/core"
 )
 
-type Account interface {
-	Handle(router *http.ServeMux)
+type Handler struct {
+	s Service
+	r *core.Render
 }
 
-type AccountImpl struct {
-	s service.Account
-	r *Render
-}
-
-func NewAccount(s service.Account, r *Render) Account {
-	return AccountImpl{
+func NewHandler(s Service, r *core.Render) Handler {
+	return Handler{
 		s: s,
 		r: r,
 	}
 }
 
-func (h AccountImpl) Handle(r *http.ServeMux) {
+func (h Handler) Handle(r *http.ServeMux) {
 	r.Handle("GET /account", h.handleAccountPage())
 	r.Handle("GET /account/{id}", h.handleAccountItemComp())
 	r.Handle("POST /account/{id}", h.handleUpdateAccount())
 	r.Handle("DELETE /account/{id}", h.handleDeleteAccount())
 }
 
-func (h AccountImpl) handleAccountPage() http.HandlerFunc {
+func (h Handler) handleAccountPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		accounts, err := h.s.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
-		comp := t.Account(accounts)
+		comp := template(accounts)
 		h.r.RenderLayout(r, w, comp, user)
 	}
 }
 
-func (h AccountImpl) handleAccountItemComp() http.HandlerFunc {
+func (h Handler) handleAccountItemComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		id := r.PathValue("id")
 		if id == "new" {
-			comp := t.EditAccount(nil)
+			comp := editAccount(nil)
 			h.r.Render(r, w, comp)
 			return
 		}
 
 		account, err := h.s.Get(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		var comp templ.Component
 		if r.URL.Query().Get("edit") == "true" {
-			comp = t.EditAccount(account)
+			comp = editAccount(account)
 		} else {
-			comp = t.AccountItem(account)
+			comp = accountItem(account)
 		}
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h AccountImpl) handleUpdateAccount() http.HandlerFunc {
+func (h Handler) handleUpdateAccount() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		var (
-			account *types.Account
+			account *Account
 			err     error
 		)
 		id := r.PathValue("id")
@@ -107,29 +98,29 @@ func (h AccountImpl) handleUpdateAccount() http.HandlerFunc {
 		if id == "new" {
 			account, err = h.s.Add(r.Context(), user, name)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		} else {
 			account, err = h.s.UpdateName(r.Context(), user, id, name)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		}
 
-		comp := t.AccountItem(account)
+		comp := accountItem(account)
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h AccountImpl) handleDeleteAccount() http.HandlerFunc {
+func (h Handler) handleDeleteAccount() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -137,7 +128,7 @@ func (h AccountImpl) handleDeleteAccount() http.HandlerFunc {
 
 		err := h.s.Delete(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 	}

internal/account/service.go

@@ -1,55 +1,55 @@
-package service
+package account
 
 import (
 	"context"
 	"errors"
 	"fmt"
 	"log/slog"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
 
 	"github.com/google/uuid"
 	"github.com/jmoiron/sqlx"
 )
 
-type Account interface {
-	Add(ctx context.Context, user *types.User, name string) (*types.Account, error)
-	UpdateName(ctx context.Context, user *types.User, id string, name string) (*types.Account, error)
-	Get(ctx context.Context, user *types.User, id string) (*types.Account, error)
-	GetAll(ctx context.Context, user *types.User) ([]*types.Account, error)
-	Delete(ctx context.Context, user *types.User, id string) error
+type Service interface {
+	Add(ctx context.Context, user *auth_types.User, name string) (*Account, error)
+	UpdateName(ctx context.Context, user *auth_types.User, id string, name string) (*Account, error)
+	Get(ctx context.Context, user *auth_types.User, id string) (*Account, error)
+	GetAll(ctx context.Context, user *auth_types.User) ([]*Account, error)
+	Delete(ctx context.Context, user *auth_types.User, id string) error
 }
 
-type AccountImpl struct {
+type ServiceImpl struct {
 	db     *sqlx.DB
-	clock  Clock
-	random Random
+	clock  core.Clock
+	random core.Random
 }
 
-func NewAccount(db *sqlx.DB, random Random, clock Clock) Account {
-	return AccountImpl{
+func NewServiceImpl(db *sqlx.DB, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
 		db:     db,
 		clock:  clock,
 		random: random,
 	}
 }
 
-func (s AccountImpl) Add(ctx context.Context, user *types.User, name string) (*types.Account, error) {
+func (s ServiceImpl) Add(ctx context.Context, user *auth_types.User, name string) (*Account, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	newId, err := s.random.UUID(ctx)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
-	err = validateString(name, "name")
+	err = core.ValidateString(name, "name")
 	if err != nil {
 		return nil, err
 	}
 
-	account := &types.Account{
+	account := &Account{
 		Id:     newId,
 		UserId: user.Id,
 
@@ -68,7 +68,7 @@ func (s AccountImpl) Add(ctx context.Context, user *types.User, name string) (*t
 	r, err := s.db.NamedExecContext(ctx, `
 		INSERT INTO account (id, user_id, name, current_balance, oink_balance, created_at, created_by) 
 		VALUES (:id, :user_id, :name, :current_balance, :oink_balance, :created_at, :created_by)`, account)
-	err = db.TransformAndLogDbError(ctx, "account Insert", r, err)
+	err = core.TransformAndLogDbError(ctx, "account Insert", r, err)
 	if err != nil {
 		return nil, err
 	}
@@ -76,22 +76,22 @@ func (s AccountImpl) Add(ctx context.Context, user *types.User, name string) (*t
 	return account, nil
 }
 
-func (s AccountImpl) UpdateName(ctx context.Context, user *types.User, id string, name string) (*types.Account, error) {
+func (s ServiceImpl) UpdateName(ctx context.Context, user *auth_types.User, id string, name string) (*Account, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
-	err := validateString(name, "name")
+	err := core.ValidateString(name, "name")
 	if err != nil {
 		return nil, err
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "account update", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "account Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -99,14 +99,14 @@ func (s AccountImpl) UpdateName(ctx context.Context, user *types.User, id string
 		_ = tx.Rollback()
 	}()
 
-	var account types.Account
+	var account Account
 	err = tx.GetContext(ctx, &account, `SELECT * FROM account WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "account Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Update", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("account %v not found: %w", id, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("account %v not found: %w", id, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	timestamp := s.clock.Now()
@@ -122,13 +122,13 @@ func (s AccountImpl) UpdateName(ctx context.Context, user *types.User, id string
 			updated_by = :updated_by
 		WHERE id = :id 
 			AND user_id = :user_id`, account)
-	err = db.TransformAndLogDbError(ctx, "account Update", r, err)
+	err = core.TransformAndLogDbError(ctx, "account Update", r, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "account Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -136,20 +136,20 @@ func (s AccountImpl) UpdateName(ctx context.Context, user *types.User, id string
 	return &account, nil
 }
 
-func (s AccountImpl) Get(ctx context.Context, user *types.User, id string) (*types.Account, error) {
+func (s ServiceImpl) Get(ctx context.Context, user *auth_types.User, id string) (*Account, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "account get", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
-	var account types.Account
+	var account Account
 	err = s.db.GetContext(ctx, &account, `
 		SELECT * FROM account WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "account Get", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Get", nil, err)
 	if err != nil {
 		slog.ErrorContext(ctx, "account get", "err", err)
 		return nil, err
@@ -158,15 +158,15 @@ func (s AccountImpl) Get(ctx context.Context, user *types.User, id string) (*typ
 	return &account, nil
 }
 
-func (s AccountImpl) GetAll(ctx context.Context, user *types.User) ([]*types.Account, error) {
+func (s ServiceImpl) GetAll(ctx context.Context, user *auth_types.User) ([]*Account, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	accounts := make([]*types.Account, 0)
+	accounts := make([]*Account, 0)
 	err := s.db.SelectContext(ctx, &accounts, `
 		SELECT * FROM account WHERE user_id = ? ORDER BY name`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "account GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -174,18 +174,18 @@ func (s AccountImpl) GetAll(ctx context.Context, user *types.User) ([]*types.Acc
 	return accounts, nil
 }
 
-func (s AccountImpl) Delete(ctx context.Context, user *types.User, id string) error {
+func (s ServiceImpl) Delete(ctx context.Context, user *auth_types.User, id string) error {
 	if user == nil {
-		return ErrUnauthorized
+		return core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "account delete", "err", err)
-		return fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "account Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Delete", nil, err)
 	if err != nil {
 		return err
 	}
@@ -195,22 +195,22 @@ func (s AccountImpl) Delete(ctx context.Context, user *types.User, id string) er
 
 	transactionsCount := 0
 	err = tx.GetContext(ctx, &transactionsCount, `SELECT COUNT(*) FROM "transaction" WHERE user_id = ? AND account_id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "account Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Delete", nil, err)
 	if err != nil {
 		return err
 	}
 	if transactionsCount > 0 {
-		return fmt.Errorf("account has transactions, cannot delete: %w", ErrBadRequest)
+		return fmt.Errorf("account has transactions, cannot delete: %w", core.ErrBadRequest)
 	}
 
 	res, err := tx.ExecContext(ctx, "DELETE FROM account WHERE id = ? and user_id = ?", uuid, user.Id)
-	err = db.TransformAndLogDbError(ctx, "account Delete", res, err)
+	err = core.TransformAndLogDbError(ctx, "account Delete", res, err)
 	if err != nil {
 		return err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "account Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "account Delete", nil, err)
 	if err != nil {
 		return err
 	}

internal/account/template.templ

@@ -1,9 +1,11 @@
 package account
 
-import "spend-sparrow/internal/template/svg"
-import "spend-sparrow/internal/types"
+import (
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/template/svg"
+)
 
-templ Account(accounts []*types.Account) {
+templ template(accounts []*Account) {
 	<div class="max-w-6xl mt-10 mx-auto">
 		<button
 			hx-get="/account/new"
@@ -11,33 +13,35 @@ templ Account(accounts []*types.Account) {
 			hx-swap="afterbegin"
 			class="ml-auto button button-primary px-2 flex-1 flex items-center gap-2 justify-center"
 		>
-			@svg.Plus()
+			<div class="w-3">
+				@svg.Plus()
+			</div>
 			<p>New Account</p>
 		</button>
 		<div id="account-items" class="my-6 flex flex-col items-center">
 			for _, account := range accounts {
-				@AccountItem(account)
+				@accountItem(account)
 			}
 		</div>
 	</div>
 }
 
-templ EditAccount(account *types.Account) {
+templ editAccount(account *Account) {
 	{{
-	var (
-		name      string
-		id        string
-		cancelUrl string
-	)
-	if account == nil {
-		name = ""
-		id = "new"
-		cancelUrl = "/empty"
-	} else {
-		name = account.Name
-		id = account.Id.String()
-		cancelUrl = "/account/" + id
-	}
+		var (
+			name      string
+			id        string
+			cancelUrl string
+		)
+		if account == nil {
+			name = ""
+			id = "new"
+			cancelUrl = "/empty"
+		} else {
+			name = account.Name
+			id = account.Id.String()
+			cancelUrl = "/account/" + id
+		}
 	}}
 	<div id="account" class="border-1 border-gray-300 w-full my-4 p-4 bg-gray-50 rounded-lg">
 		<form
@@ -77,14 +81,14 @@ templ EditAccount(account *types.Account) {
 	</div>
 }
 
-templ AccountItem(account *types.Account) {
+templ accountItem(account *Account) {
 	<div id="account" class="border-1 border-gray-300 w-full my-4 p-4 bg-gray-50 rounded-lg">
 		<div class="text-xl flex justify-end gap-4">
 			<p class="mr-auto">{ account.Name }</p>
 			if account.CurrentBalance < 0 {
-				<p class="mr-20 text-red-700">{ types.FormatEuros(account.CurrentBalance) }</p>
+				<p class="mr-20 text-red-700">{ core.FormatEuros(account.CurrentBalance) }</p>
 			} else {
-				<p class="mr-20 text-green-700">{ types.FormatEuros(account.CurrentBalance) }</p>
+				<p class="mr-20 text-green-700">{ core.FormatEuros(account.CurrentBalance) }</p>
 			}
 			<a
 				href={ templ.URL("/transaction?account-id=" + account.Id.String()) }

internal/account/type.go

@@ -1,9 +1,8 @@
-package types
+package account
 
 import (
-	"time"
-
 	"github.com/google/uuid"
+	"time"
 )
 
 // The Account holds money.

internal/auth_types/types.go

@@ -1,4 +1,4 @@
-package types
+package auth_types
 
 import (
 	"time"

internal/authentication/db.go

@@ -1,11 +1,12 @@
-package db
+package authentication
 
 import (
 	"context"
 	"database/sql"
 	"errors"
 	"log/slog"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
 	"strings"
 	"time"
 
@@ -13,36 +14,36 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-type Auth interface {
-	InsertUser(ctx context.Context, user *types.User) error
-	UpdateUser(ctx context.Context, user *types.User) error
-	GetUserByEmail(ctx context.Context, email string) (*types.User, error)
-	GetUser(ctx context.Context, userId uuid.UUID) (*types.User, error)
+type Db interface {
+	InsertUser(ctx context.Context, user *auth_types.User) error
+	UpdateUser(ctx context.Context, user *auth_types.User) error
+	GetUserByEmail(ctx context.Context, email string) (*auth_types.User, error)
+	GetUser(ctx context.Context, userId uuid.UUID) (*auth_types.User, error)
 	DeleteUser(ctx context.Context, userId uuid.UUID) error
 
-	InsertToken(ctx context.Context, token *types.Token) error
-	GetToken(ctx context.Context, token string) (*types.Token, error)
-	GetTokensByUserIdAndType(ctx context.Context, userId uuid.UUID, tokenType types.TokenType) ([]*types.Token, error)
-	GetTokensBySessionIdAndType(ctx context.Context, sessionId string, tokenType types.TokenType) ([]*types.Token, error)
+	InsertToken(ctx context.Context, token *auth_types.Token) error
+	GetToken(ctx context.Context, token string) (*auth_types.Token, error)
+	GetTokensByUserIdAndType(ctx context.Context, userId uuid.UUID, tokenType auth_types.TokenType) ([]*auth_types.Token, error)
+	GetTokensBySessionIdAndType(ctx context.Context, sessionId string, tokenType auth_types.TokenType) ([]*auth_types.Token, error)
 	DeleteToken(ctx context.Context, token string) error
 
-	InsertSession(ctx context.Context, session *types.Session) error
-	GetSession(ctx context.Context, sessionId string) (*types.Session, error)
-	GetSessions(ctx context.Context, userId uuid.UUID) ([]*types.Session, error)
+	InsertSession(ctx context.Context, session *auth_types.Session) error
+	GetSession(ctx context.Context, sessionId string) (*auth_types.Session, error)
+	GetSessions(ctx context.Context, userId uuid.UUID) ([]*auth_types.Session, error)
 	DeleteSession(ctx context.Context, sessionId string) error
 	DeleteOldSessions(ctx context.Context) error
 	DeleteOldTokens(ctx context.Context) error
 }
 
-type AuthSqlite struct {
+type DbSqlite struct {
 	db *sqlx.DB
 }
 
-func NewAuthSqlite(db *sqlx.DB) *AuthSqlite {
-	return &AuthSqlite{db: db}
+func NewDbSqlite(db *sqlx.DB) *DbSqlite {
+	return &DbSqlite{db: db}
 }
 
-func (db AuthSqlite) InsertUser(ctx context.Context, user *types.User) error {
+func (db DbSqlite) InsertUser(ctx context.Context, user *auth_types.User) error {
 	_, err := db.db.ExecContext(ctx, `
 		INSERT INTO user (user_id, email, email_verified, email_verified_at, is_admin, password, salt, created_at) 
 		VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
@@ -50,17 +51,17 @@ func (db AuthSqlite) InsertUser(ctx context.Context, user *types.User) error {
 
 	if err != nil {
 		if strings.Contains(err.Error(), "email") {
-			return ErrAlreadyExists
+			return core.ErrAlreadyExists
 		}
 
 		slog.ErrorContext(ctx, "SQL error InsertUser", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) UpdateUser(ctx context.Context, user *types.User) error {
+func (db DbSqlite) UpdateUser(ctx context.Context, user *auth_types.User) error {
 	_, err := db.db.ExecContext(ctx, `
 		UPDATE user 
 		SET email_verified = ?, email_verified_at = ?, password = ?
@@ -69,13 +70,13 @@ func (db AuthSqlite) UpdateUser(ctx context.Context, user *types.User) error {
 
 	if err != nil {
 		slog.ErrorContext(ctx, "SQL error UpdateUser", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) GetUserByEmail(ctx context.Context, email string) (*types.User, error) {
+func (db DbSqlite) GetUserByEmail(ctx context.Context, email string) (*auth_types.User, error) {
 	var (
 		userId          uuid.UUID
 		emailVerified   bool
@@ -92,17 +93,17 @@ func (db AuthSqlite) GetUserByEmail(ctx context.Context, email string) (*types.U
 		WHERE email = ?`, email).Scan(&userId, &emailVerified, &emailVerifiedAt, &password, &salt, &createdAt)
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
-			return nil, ErrNotFound
+			return nil, core.ErrNotFound
 		} else {
 			slog.ErrorContext(ctx, "SQL error GetUser", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 	}
 
-	return types.NewUser(userId, email, emailVerified, emailVerifiedAt, isAdmin, password, salt, createdAt), nil
+	return auth_types.NewUser(userId, email, emailVerified, emailVerifiedAt, isAdmin, password, salt, createdAt), nil
 }
 
-func (db AuthSqlite) GetUser(ctx context.Context, userId uuid.UUID) (*types.User, error) {
+func (db DbSqlite) GetUser(ctx context.Context, userId uuid.UUID) (*auth_types.User, error) {
 	var (
 		email           string
 		emailVerified   bool
@@ -119,92 +120,92 @@ func (db AuthSqlite) GetUser(ctx context.Context, userId uuid.UUID) (*types.User
 		WHERE user_id = ?`, userId).Scan(&email, &emailVerified, &emailVerifiedAt, &password, &salt, &createdAt)
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
-			return nil, ErrNotFound
+			return nil, core.ErrNotFound
 		} else {
 			slog.ErrorContext(ctx, "SQL error GetUser", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 	}
 
-	return types.NewUser(userId, email, emailVerified, emailVerifiedAt, isAdmin, password, salt, createdAt), nil
+	return auth_types.NewUser(userId, email, emailVerified, emailVerifiedAt, isAdmin, password, salt, createdAt), nil
 }
 
-func (db AuthSqlite) DeleteUser(ctx context.Context, userId uuid.UUID) error {
+func (db DbSqlite) DeleteUser(ctx context.Context, userId uuid.UUID) error {
 	tx, err := db.db.BeginTx(ctx, nil)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not start transaction", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM account WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete accounts", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM token WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete user tokens", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM session WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete sessions", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM user WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete user", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM treasure_chest WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete user", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_, err = tx.ExecContext(ctx, "DELETE FROM \"transaction\" WHERE user_id = ?", userId)
 	if err != nil {
 		_ = tx.Rollback()
 		slog.ErrorContext(ctx, "Could not delete user", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	err = tx.Commit()
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not commit transaction", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) InsertToken(ctx context.Context, token *types.Token) error {
+func (db DbSqlite) InsertToken(ctx context.Context, token *auth_types.Token) error {
 	_, err := db.db.ExecContext(ctx, `
 		INSERT INTO token (user_id, session_id, type, token, created_at, expires_at)
 		VALUES (?, ?, ?, ?, ?, ?)`, token.UserId, token.SessionId, token.Type, token.Token, token.CreatedAt, token.ExpiresAt)
 
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not insert token", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) GetToken(ctx context.Context, token string) (*types.Token, error) {
+func (db DbSqlite) GetToken(ctx context.Context, token string) (*auth_types.Token, error) {
 	var (
 		userId       uuid.UUID
 		sessionId    string
-		tokenType    types.TokenType
+		tokenType    auth_types.TokenType
 		createdAtStr string
 		expiresAtStr string
 		createdAt    time.Time
@@ -219,29 +220,29 @@ func (db AuthSqlite) GetToken(ctx context.Context, token string) (*types.Token,
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			slog.InfoContext(ctx, "Token not found", "token", token)
-			return nil, ErrNotFound
+			return nil, core.ErrNotFound
 		} else {
 			slog.ErrorContext(ctx, "Could not get token", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 	}
 
 	createdAt, err = time.Parse(time.RFC3339, createdAtStr)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not parse token.created_at", "err", err)
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	expiresAt, err = time.Parse(time.RFC3339, expiresAtStr)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not parse token.expires_at", "err", err)
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
-	return types.NewToken(userId, sessionId, token, tokenType, createdAt, expiresAt), nil
+	return auth_types.NewToken(userId, sessionId, token, tokenType, createdAt, expiresAt), nil
 }
 
-func (db AuthSqlite) GetTokensByUserIdAndType(ctx context.Context, userId uuid.UUID, tokenType types.TokenType) ([]*types.Token, error) {
+func (db DbSqlite) GetTokensByUserIdAndType(ctx context.Context, userId uuid.UUID, tokenType auth_types.TokenType) ([]*auth_types.Token, error) {
 	query, err := db.db.QueryContext(ctx, `
 		SELECT token, created_at, expires_at 
 		FROM token 
@@ -250,13 +251,13 @@ func (db AuthSqlite) GetTokensByUserIdAndType(ctx context.Context, userId uuid.U
 
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not get token", "err", err)
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return getTokensFromQuery(ctx, query, userId, "", tokenType)
 }
 
-func (db AuthSqlite) GetTokensBySessionIdAndType(ctx context.Context, sessionId string, tokenType types.TokenType) ([]*types.Token, error) {
+func (db DbSqlite) GetTokensBySessionIdAndType(ctx context.Context, sessionId string, tokenType auth_types.TokenType) ([]*auth_types.Token, error) {
 	query, err := db.db.QueryContext(ctx, `
 		SELECT token, created_at, expires_at 
 		FROM token 
@@ -265,14 +266,14 @@ func (db AuthSqlite) GetTokensBySessionIdAndType(ctx context.Context, sessionId
 
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not get token", "err", err)
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return getTokensFromQuery(ctx, query, uuid.Nil, sessionId, tokenType)
 }
 
-func getTokensFromQuery(ctx context.Context, query *sql.Rows, userId uuid.UUID, sessionId string, tokenType types.TokenType) ([]*types.Token, error) {
-	var tokens []*types.Token
+func getTokensFromQuery(ctx context.Context, query *sql.Rows, userId uuid.UUID, sessionId string, tokenType auth_types.TokenType) ([]*auth_types.Token, error) {
+	var tokens []*auth_types.Token
 
 	hasRows := false
 	for query.Next() {
@@ -289,54 +290,54 @@ func getTokensFromQuery(ctx context.Context, query *sql.Rows, userId uuid.UUID,
 		err := query.Scan(&token, &createdAtStr, &expiresAtStr)
 		if err != nil {
 			slog.ErrorContext(ctx, "Could not scan token", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 
 		createdAt, err = time.Parse(time.RFC3339, createdAtStr)
 		if err != nil {
 			slog.ErrorContext(ctx, "Could not parse token.created_at", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 
 		expiresAt, err = time.Parse(time.RFC3339, expiresAtStr)
 		if err != nil {
 			slog.ErrorContext(ctx, "Could not parse token.expires_at", "err", err)
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 
-		tokens = append(tokens, types.NewToken(userId, sessionId, token, tokenType, createdAt, expiresAt))
+		tokens = append(tokens, auth_types.NewToken(userId, sessionId, token, tokenType, createdAt, expiresAt))
 	}
 
 	if !hasRows {
-		return nil, ErrNotFound
+		return nil, core.ErrNotFound
 	}
 
 	return tokens, nil
 }
 
-func (db AuthSqlite) DeleteToken(ctx context.Context, token string) error {
+func (db DbSqlite) DeleteToken(ctx context.Context, token string) error {
 	_, err := db.db.ExecContext(ctx, "DELETE FROM token WHERE token = ?", token)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not delete token", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 	return nil
 }
 
-func (db AuthSqlite) InsertSession(ctx context.Context, session *types.Session) error {
+func (db DbSqlite) InsertSession(ctx context.Context, session *auth_types.Session) error {
 	_, err := db.db.ExecContext(ctx, `
 		INSERT INTO session (session_id, user_id, created_at, expires_at) 
 		VALUES (?, ?, ?, ?)`, session.Id, session.UserId, session.CreatedAt, session.ExpiresAt)
 
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not insert new session", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) GetSession(ctx context.Context, sessionId string) (*types.Session, error) {
+func (db DbSqlite) GetSession(ctx context.Context, sessionId string) (*auth_types.Session, error) {
 	var (
 		userId    uuid.UUID
 		createdAt time.Time
@@ -350,56 +351,56 @@ func (db AuthSqlite) GetSession(ctx context.Context, sessionId string) (*types.S
 
 	if err != nil {
 		slog.WarnContext(ctx, "Session not found", "session-id", sessionId, "err", err)
-		return nil, ErrNotFound
+		return nil, core.ErrNotFound
 	}
 
-	return types.NewSession(sessionId, userId, createdAt, expiresAt), nil
+	return auth_types.NewSession(sessionId, userId, createdAt, expiresAt), nil
 }
 
-func (db AuthSqlite) GetSessions(ctx context.Context, userId uuid.UUID) ([]*types.Session, error) {
-	var sessions []*types.Session
+func (db DbSqlite) GetSessions(ctx context.Context, userId uuid.UUID) ([]*auth_types.Session, error) {
+	var sessions []*auth_types.Session
 	err := db.db.SelectContext(ctx, &sessions, `
 			SELECT *
 			FROM session 
 			WHERE user_id = ?`, userId)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not get sessions", "err", err)
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return sessions, nil
 }
 
-func (db AuthSqlite) DeleteSession(ctx context.Context, sessionId string) error {
+func (db DbSqlite) DeleteSession(ctx context.Context, sessionId string) error {
 	if sessionId != "" {
 		_, err := db.db.ExecContext(ctx, "DELETE FROM session WHERE session_id = ?", sessionId)
 		if err != nil {
 			slog.ErrorContext(ctx, "Could not delete session", "err", err)
-			return types.ErrInternal
+			return core.ErrInternal
 		}
 	}
 
 	return nil
 }
 
-func (db AuthSqlite) DeleteOldSessions(ctx context.Context) error {
+func (db DbSqlite) DeleteOldSessions(ctx context.Context) error {
 	_, err := db.db.ExecContext(ctx, `
 		DELETE FROM session 
 		WHERE expires_at < datetime('now')`)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not delete old sessions", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 	return nil
 }
 
-func (db AuthSqlite) DeleteOldTokens(ctx context.Context) error {
+func (db DbSqlite) DeleteOldTokens(ctx context.Context) error {
 	_, err := db.db.ExecContext(ctx, `
 		DELETE FROM token 
 		WHERE expires_at < datetime('now')`)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not delete old tokens", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 	return nil
 }

internal/authentication/handler.go

@@ -1,35 +1,33 @@
-package handler
+package authentication
 
 import (
 	"errors"
 	"log/slog"
 	"net/http"
 	"net/url"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/template/auth"
-	"spend-sparrow/internal/types"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/authentication/template"
+	"spend-sparrow/internal/core"
 	"time"
 )
 
-type Auth interface {
+type Handler interface {
 	Handle(router *http.ServeMux)
 }
 
-type AuthImpl struct {
-	service service.Auth
-	render  *Render
+type HandlerImpl struct {
+	service Service
+	render  *core.Render
 }
 
-func NewAuth(service service.Auth, render *Render) Auth {
-	return AuthImpl{
+func NewHandler(service Service, render *core.Render) Handler {
+	return HandlerImpl{
 		service: service,
 		render:  render,
 	}
 }
 
-func (handler AuthImpl) Handle(router *http.ServeMux) {
+func (handler HandlerImpl) Handle(router *http.ServeMux) {
 	router.Handle("GET /auth/signin", handler.handleSignInPage())
 	router.Handle("POST /api/auth/signin", handler.handleSignIn())
 
@@ -56,32 +54,32 @@ var (
 	securityWaitDuration = 250 * time.Millisecond
 )
 
-func (handler AuthImpl) handleSignInPage() http.HandlerFunc {
+func (handler HandlerImpl) handleSignInPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user != nil {
 			if !user.EmailVerified {
-				utils.DoRedirect(w, r, "/auth/verify")
+				core.DoRedirect(w, r, "/auth/verify")
 			} else {
-				utils.DoRedirect(w, r, "/")
+				core.DoRedirect(w, r, "/")
 			}
 			return
 		}
 
-		comp := auth.SignInOrUpComp(true)
+		comp := template.SignInOrUpComp(true)
 
 		handler.render.RenderLayout(r, w, comp, nil)
 	}
 }
 
-func (handler AuthImpl) handleSignIn() http.HandlerFunc {
+func (handler HandlerImpl) handleSignIn() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user, err := utils.WaitMinimumTime(securityWaitDuration, func() (*types.User, error) {
-			session := middleware.GetSession(r)
+		user, err := core.WaitMinimumTime(securityWaitDuration, func() (*auth_types.User, error) {
+			session := core.GetSession(r)
 			email := r.FormValue("email")
 			password := r.FormValue("password")
 
@@ -90,76 +88,76 @@ func (handler AuthImpl) handleSignIn() http.HandlerFunc {
 				return nil, err
 			}
 
-			cookie := middleware.CreateSessionCookie(session.Id)
+			cookie := core.CreateSessionCookie(session.Id)
 			http.SetCookie(w, &cookie)
 
 			return user, nil
 		})
 
 		if err != nil {
-			if errors.Is(err, service.ErrInvalidCredentials) {
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Invalid email or password", http.StatusUnauthorized)
+			if errors.Is(err, ErrInvalidCredentials) {
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "Invalid email or password", http.StatusUnauthorized)
 			} else {
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "An error occurred", http.StatusInternalServerError)
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "An error occurred", http.StatusInternalServerError)
 			}
 			return
 		}
 
 		if user.EmailVerified {
-			utils.DoRedirect(w, r, "/")
+			core.DoRedirect(w, r, "/")
 		} else {
-			utils.DoRedirect(w, r, "/auth/verify")
+			core.DoRedirect(w, r, "/auth/verify")
 		}
 	}
 }
 
-func (handler AuthImpl) handleSignUpPage() http.HandlerFunc {
+func (handler HandlerImpl) handleSignUpPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
 		if user != nil {
 			if !user.EmailVerified {
-				utils.DoRedirect(w, r, "/auth/verify")
+				core.DoRedirect(w, r, "/auth/verify")
 			} else {
-				utils.DoRedirect(w, r, "/")
+				core.DoRedirect(w, r, "/")
 			}
 			return
 		}
 
-		signUpComp := auth.SignInOrUpComp(false)
+		signUpComp := template.SignInOrUpComp(false)
 		handler.render.RenderLayout(r, w, signUpComp, nil)
 	}
 }
 
-func (handler AuthImpl) handleSignUpVerifyPage() http.HandlerFunc {
+func (handler HandlerImpl) handleSignUpVerifyPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		if user.EmailVerified {
-			utils.DoRedirect(w, r, "/")
+			core.DoRedirect(w, r, "/")
 			return
 		}
 
-		signIn := auth.VerifyComp()
+		signIn := template.VerifyComp()
 		handler.render.RenderLayout(r, w, signIn, user)
 	}
 }
 
-func (handler AuthImpl) handleVerifyResendComp() http.HandlerFunc {
+func (handler HandlerImpl) handleVerifyResendComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -172,16 +170,16 @@ func (handler AuthImpl) handleVerifyResendComp() http.HandlerFunc {
 	}
 }
 
-func (handler AuthImpl) handleSignUpVerifyResponsePage() http.HandlerFunc {
+func (handler HandlerImpl) handleSignUpVerifyResponsePage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		token := r.URL.Query().Get("token")
 
 		err := handler.service.VerifyUserEmail(r.Context(), token)
 
 		isVerified := err == nil
-		comp := auth.VerifyResponseComp(isVerified)
+		comp := template.VerifyResponseComp(isVerified)
 
 		var status int
 		if isVerified {
@@ -194,14 +192,14 @@ func (handler AuthImpl) handleSignUpVerifyResponsePage() http.HandlerFunc {
 	}
 }
 
-func (handler AuthImpl) handleSignUp() http.HandlerFunc {
+func (handler HandlerImpl) handleSignUp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		var email = r.FormValue("email")
 		var password = r.FormValue("password")
 
-		_, err := utils.WaitMinimumTime(securityWaitDuration, func() (any, error) {
+		_, err := core.WaitMinimumTime(securityWaitDuration, func() (any, error) {
 			slog.InfoContext(r.Context(), "signing up", "email", email)
 			user, err := handler.service.SignUp(r.Context(), email, password)
 			if err != nil {
@@ -215,28 +213,28 @@ func (handler AuthImpl) handleSignUp() http.HandlerFunc {
 
 		if err != nil {
 			switch {
-			case errors.Is(err, types.ErrInternal):
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "An error occurred", http.StatusInternalServerError)
+			case errors.Is(err, core.ErrInternal):
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "An error occurred", http.StatusInternalServerError)
 				return
-			case errors.Is(err, service.ErrInvalidEmail):
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "The email provided is invalid", http.StatusBadRequest)
+			case errors.Is(err, ErrInvalidEmail):
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "The email provided is invalid", http.StatusBadRequest)
 				return
-			case errors.Is(err, service.ErrInvalidPassword):
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", service.ErrInvalidPassword.Error(), http.StatusBadRequest)
+			case errors.Is(err, ErrInvalidPassword):
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", ErrInvalidPassword.Error(), http.StatusBadRequest)
 				return
 			}
 			// If err is "service.ErrAccountExists", then just continue
 		}
 
-		utils.TriggerToastWithStatus(r.Context(), w, r, "success", "An activation link has been send to your email", http.StatusOK)
+		core.TriggerToastWithStatus(r.Context(), w, r, "success", "An activation link has been send to your email", http.StatusOK)
 	}
 }
 
-func (handler AuthImpl) handleSignOut() http.HandlerFunc {
+func (handler HandlerImpl) handleSignOut() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		session := middleware.GetSession(r)
+		session := core.GetSession(r)
 
 		if session != nil {
 			err := handler.service.SignOut(r.Context(), session.Id)
@@ -257,32 +255,32 @@ func (handler AuthImpl) handleSignOut() http.HandlerFunc {
 		}
 
 		http.SetCookie(w, &c)
-		utils.DoRedirect(w, r, "/")
+		core.DoRedirect(w, r, "/")
 	}
 }
 
-func (handler AuthImpl) handleDeleteAccountPage() http.HandlerFunc {
+func (handler HandlerImpl) handleDeleteAccountPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
-		comp := auth.DeleteAccountComp()
+		comp := template.DeleteAccountComp()
 		handler.render.RenderLayout(r, w, comp, user)
 	}
 }
 
-func (handler AuthImpl) handleDeleteAccountComp() http.HandlerFunc {
+func (handler HandlerImpl) handleDeleteAccountComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -290,44 +288,44 @@ func (handler AuthImpl) handleDeleteAccountComp() http.HandlerFunc {
 
 		err := handler.service.DeleteAccount(r.Context(), user, password)
 		if err != nil {
-			if errors.Is(err, service.ErrInvalidCredentials) {
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Password not correct", http.StatusBadRequest)
+			if errors.Is(err, ErrInvalidCredentials) {
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "Password not correct", http.StatusBadRequest)
 			} else {
-				utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
+				core.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
 			}
 			return
 		}
 
-		utils.DoRedirect(w, r, "/")
+		core.DoRedirect(w, r, "/")
 	}
 }
 
-func (handler AuthImpl) handleChangePasswordPage() http.HandlerFunc {
+func (handler HandlerImpl) handleChangePasswordPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		isPasswordReset := r.URL.Query().Has("token")
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
 		if user == nil && !isPasswordReset {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
-		comp := auth.ChangePasswordComp(isPasswordReset)
+		comp := template.ChangePasswordComp(isPasswordReset)
 		handler.render.RenderLayout(r, w, comp, user)
 	}
 }
 
-func (handler AuthImpl) handleChangePasswordComp() http.HandlerFunc {
+func (handler HandlerImpl) handleChangePasswordComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		session := middleware.GetSession(r)
-		user := middleware.GetUser(r)
+		session := core.GetSession(r)
+		user := core.GetUser(r)
 		if session == nil || user == nil {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Unathorized", http.StatusUnauthorized)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", "Unathorized", http.StatusUnauthorized)
 			return
 		}
 
@@ -336,60 +334,60 @@ func (handler AuthImpl) handleChangePasswordComp() http.HandlerFunc {
 
 		err := handler.service.ChangePassword(r.Context(), user, session.Id, currPass, newPass)
 		if err != nil {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", err.Error(), http.StatusBadRequest)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", err.Error(), http.StatusBadRequest)
 			return
 		}
 
-		utils.TriggerToastWithStatus(r.Context(), w, r, "success", "Password changed", http.StatusOK)
+		core.TriggerToastWithStatus(r.Context(), w, r, "success", "Password changed", http.StatusOK)
 	}
 }
 
-func (handler AuthImpl) handleForgotPasswordPage() http.HandlerFunc {
+func (handler HandlerImpl) handleForgotPasswordPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user != nil {
-			utils.DoRedirect(w, r, "/")
+			core.DoRedirect(w, r, "/")
 			return
 		}
 
-		comp := auth.ResetPasswordComp()
+		comp := template.ResetPasswordComp()
 		handler.render.RenderLayout(r, w, comp, user)
 	}
 }
 
-func (handler AuthImpl) handleForgotPasswordComp() http.HandlerFunc {
+func (handler HandlerImpl) handleForgotPasswordComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		email := r.FormValue("email")
 		if email == "" {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Please enter an email", http.StatusBadRequest)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", "Please enter an email", http.StatusBadRequest)
 			return
 		}
 
-		_, err := utils.WaitMinimumTime(securityWaitDuration, func() (any, error) {
+		_, err := core.WaitMinimumTime(securityWaitDuration, func() (any, error) {
 			err := handler.service.SendForgotPasswordMail(r.Context(), email)
 			return nil, err
 		})
 
 		if err != nil {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
 		} else {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "info", "If the address exists, an email has been sent.", http.StatusOK)
+			core.TriggerToastWithStatus(r.Context(), w, r, "info", "If the address exists, an email has been sent.", http.StatusOK)
 		}
 	}
 }
 
-func (handler AuthImpl) handleForgotPasswordResponseComp() http.HandlerFunc {
+func (handler HandlerImpl) handleForgotPasswordResponseComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		pageUrl, err := url.Parse(r.Header.Get("Hx-Current-Url"))
 		if err != nil {
 			slog.ErrorContext(r.Context(), "Could not get current URL", "err", err)
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
 			return
 		}
 
@@ -398,9 +396,9 @@ func (handler AuthImpl) handleForgotPasswordResponseComp() http.HandlerFunc {
 
 		err = handler.service.ForgotPassword(r.Context(), token, newPass)
 		if err != nil {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "error", err.Error(), http.StatusBadRequest)
+			core.TriggerToastWithStatus(r.Context(), w, r, "error", err.Error(), http.StatusBadRequest)
 		} else {
-			utils.TriggerToastWithStatus(r.Context(), w, r, "success", "Password changed", http.StatusOK)
+			core.TriggerToastWithStatus(r.Context(), w, r, "success", "Password changed", http.StatusOK)
 		}
 	}
 }

internal/authentication/service.go

@@ -1,4 +1,4 @@
-package service
+package authentication
 
 import (
 	"context"
@@ -6,9 +6,9 @@ import (
 	"errors"
 	"log/slog"
 	"net/mail"
-	"spend-sparrow/internal/db"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
 	mailTemplate "spend-sparrow/internal/template/mail"
-	"spend-sparrow/internal/types"
 	"strings"
 	"time"
 
@@ -25,39 +25,39 @@ var (
 	ErrTokenInvalid       = errors.New("token is invalid")
 )
 
-type Auth interface {
-	SignUp(ctx context.Context, email string, password string) (*types.User, error)
+type Service interface {
+	SignUp(ctx context.Context, email string, password string) (*auth_types.User, error)
 	SendVerificationMail(ctx context.Context, userId uuid.UUID, email string)
 	VerifyUserEmail(ctx context.Context, token string) error
 
-	SignIn(ctx context.Context, session *types.Session, email string, password string) (*types.Session, *types.User, error)
-	SignInSession(ctx context.Context, sessionId string) (*types.Session, *types.User, error)
-	SignInAnonymous(ctx context.Context) (*types.Session, error)
+	SignIn(ctx context.Context, session *auth_types.Session, email string, password string) (*auth_types.Session, *auth_types.User, error)
+	SignInSession(ctx context.Context, sessionId string) (*auth_types.Session, *auth_types.User, error)
+	SignInAnonymous(ctx context.Context) (*auth_types.Session, error)
 	SignOut(ctx context.Context, sessionId string) error
 
-	DeleteAccount(ctx context.Context, user *types.User, currPass string) error
+	DeleteAccount(ctx context.Context, user *auth_types.User, currPass string) error
 
-	ChangePassword(ctx context.Context, user *types.User, sessionId string, currPass, newPass string) error
+	ChangePassword(ctx context.Context, user *auth_types.User, sessionId string, currPass, newPass string) error
 
 	SendForgotPasswordMail(ctx context.Context, email string) error
 	ForgotPassword(ctx context.Context, token string, newPass string) error
 
 	IsCsrfTokenValid(ctx context.Context, tokenStr string, sessionId string) bool
-	GetCsrfToken(ctx context.Context, session *types.Session) (string, error)
+	GetCsrfToken(ctx context.Context, session *auth_types.Session) (string, error)
 
 	CleanupSessionsAndTokens(ctx context.Context) error
 }
 
-type AuthImpl struct {
-	db             db.Auth
-	random         Random
-	clock          Clock
-	mail           Mail
-	serverSettings *types.Settings
+type ServiceImpl struct {
+	db             Db
+	random         core.Random
+	clock          core.Clock
+	mail           core.Mail
+	serverSettings *core.Settings
 }
 
-func NewAuth(db db.Auth, random Random, clock Clock, mail Mail, serverSettings *types.Settings) *AuthImpl {
-	return &AuthImpl{
+func NewService(db Db, random core.Random, clock core.Clock, mail core.Mail, serverSettings *core.Settings) *ServiceImpl {
+	return &ServiceImpl{
 		db:             db,
 		random:         random,
 		clock:          clock,
@@ -66,13 +66,13 @@ func NewAuth(db db.Auth, random Random, clock Clock, mail Mail, serverSettings *
 	}
 }
 
-func (service AuthImpl) SignIn(ctx context.Context, session *types.Session, email string, password string) (*types.Session, *types.User, error) {
+func (service ServiceImpl) SignIn(ctx context.Context, session *auth_types.Session, email string, password string) (*auth_types.Session, *auth_types.User, error) {
 	user, err := service.db.GetUserByEmail(ctx, email)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
+		if errors.Is(err, core.ErrNotFound) {
 			return nil, nil, ErrInvalidCredentials
 		} else {
-			return nil, nil, types.ErrInternal
+			return nil, nil, core.ErrInternal
 		}
 	}
 
@@ -84,36 +84,36 @@ func (service AuthImpl) SignIn(ctx context.Context, session *types.Session, emai
 
 	newSession, err := service.createSession(ctx, user.Id)
 	if err != nil {
-		return nil, nil, types.ErrInternal
+		return nil, nil, core.ErrInternal
 	}
 
 	err = service.db.DeleteSession(ctx, session.Id)
 	if err != nil {
-		return nil, nil, types.ErrInternal
+		return nil, nil, core.ErrInternal
 	}
 
-	tokens, err := service.db.GetTokensBySessionIdAndType(ctx, session.Id, types.TokenTypeCsrf)
+	tokens, err := service.db.GetTokensBySessionIdAndType(ctx, session.Id, auth_types.TokenTypeCsrf)
 	if err != nil {
-		return nil, nil, types.ErrInternal
+		return nil, nil, core.ErrInternal
 	}
 	for _, token := range tokens {
 		err = service.db.DeleteToken(ctx, token.Token)
 		if err != nil {
-			return nil, nil, types.ErrInternal
+			return nil, nil, core.ErrInternal
 		}
 	}
 
 	return newSession, user, nil
 }
 
-func (service AuthImpl) SignInSession(ctx context.Context, sessionId string) (*types.Session, *types.User, error) {
+func (service ServiceImpl) SignInSession(ctx context.Context, sessionId string) (*auth_types.Session, *auth_types.User, error) {
 	if sessionId == "" {
 		return nil, nil, ErrSessionIdInvalid
 	}
 
 	session, err := service.db.GetSession(ctx, sessionId)
 	if err != nil {
-		return nil, nil, types.ErrInternal
+		return nil, nil, core.ErrInternal
 	}
 	if session.ExpiresAt.Before(service.clock.Now()) {
 		_ = service.db.DeleteSession(ctx, sessionId)
@@ -126,16 +126,16 @@ func (service AuthImpl) SignInSession(ctx context.Context, sessionId string) (*t
 
 	user, err := service.db.GetUser(ctx, session.UserId)
 	if err != nil {
-		return nil, nil, types.ErrInternal
+		return nil, nil, core.ErrInternal
 	}
 
 	return session, user, nil
 }
 
-func (service AuthImpl) SignInAnonymous(ctx context.Context) (*types.Session, error) {
+func (service ServiceImpl) SignInAnonymous(ctx context.Context) (*auth_types.Session, error) {
 	session, err := service.createSession(ctx, uuid.Nil)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	slog.InfoContext(ctx, "anonymous session created", "session-id", session.Id)
@@ -143,7 +143,7 @@ func (service AuthImpl) SignInAnonymous(ctx context.Context) (*types.Session, er
 	return session, nil
 }
 
-func (service AuthImpl) SignUp(ctx context.Context, email string, password string) (*types.User, error) {
+func (service ServiceImpl) SignUp(ctx context.Context, email string, password string) (*auth_types.User, error) {
 	_, err := mail.ParseAddress(email)
 	if err != nil {
 		return nil, ErrInvalidEmail
@@ -155,37 +155,37 @@ func (service AuthImpl) SignUp(ctx context.Context, email string, password strin
 
 	userId, err := service.random.UUID(ctx)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	salt, err := service.random.Bytes(ctx, 16)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	hash := GetHashPassword(password, salt)
 
-	user := types.NewUser(userId, email, false, nil, false, hash, salt, service.clock.Now())
+	user := auth_types.NewUser(userId, email, false, nil, false, hash, salt, service.clock.Now())
 
 	err = service.db.InsertUser(ctx, user)
 	if err != nil {
-		if errors.Is(err, db.ErrAlreadyExists) {
+		if errors.Is(err, core.ErrAlreadyExists) {
 			return nil, ErrAccountExists
 		} else {
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 	}
 
 	return user, nil
 }
 
-func (service AuthImpl) SendVerificationMail(ctx context.Context, userId uuid.UUID, email string) {
-	tokens, err := service.db.GetTokensByUserIdAndType(ctx, userId, types.TokenTypeEmailVerify)
-	if err != nil && !errors.Is(err, db.ErrNotFound) {
+func (service ServiceImpl) SendVerificationMail(ctx context.Context, userId uuid.UUID, email string) {
+	tokens, err := service.db.GetTokensByUserIdAndType(ctx, userId, auth_types.TokenTypeEmailVerify)
+	if err != nil && !errors.Is(err, core.ErrNotFound) {
 		return
 	}
 
-	var token *types.Token
+	var token *auth_types.Token
 
 	if len(tokens) > 0 {
 		token = tokens[0]
@@ -197,11 +197,11 @@ func (service AuthImpl) SendVerificationMail(ctx context.Context, userId uuid.UU
 			return
 		}
 
-		token = types.NewToken(
+		token = auth_types.NewToken(
 			userId,
 			"",
 			newTokenStr,
-			types.TokenTypeEmailVerify,
+			auth_types.TokenTypeEmailVerify,
 			service.clock.Now(),
 			service.clock.Now().Add(24*time.Hour))
 
@@ -221,29 +221,29 @@ func (service AuthImpl) SendVerificationMail(ctx context.Context, userId uuid.UU
 	service.mail.SendMail(ctx, email, "Welcome to spend-sparrow", w.String())
 }
 
-func (service AuthImpl) VerifyUserEmail(ctx context.Context, tokenStr string) error {
+func (service ServiceImpl) VerifyUserEmail(ctx context.Context, tokenStr string) error {
 	if tokenStr == "" {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	token, err := service.db.GetToken(ctx, tokenStr)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	user, err := service.db.GetUser(ctx, token.UserId)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
-	if token.Type != types.TokenTypeEmailVerify {
-		return types.ErrInternal
+	if token.Type != auth_types.TokenTypeEmailVerify {
+		return core.ErrInternal
 	}
 
 	now := service.clock.Now()
 
 	if token.ExpiresAt.Before(now) {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	user.EmailVerified = true
@@ -251,21 +251,21 @@ func (service AuthImpl) VerifyUserEmail(ctx context.Context, tokenStr string) er
 
 	err = service.db.UpdateUser(ctx, user)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	_ = service.db.DeleteToken(ctx, token.Token)
 	return nil
 }
 
-func (service AuthImpl) SignOut(ctx context.Context, sessionId string) error {
+func (service ServiceImpl) SignOut(ctx context.Context, sessionId string) error {
 	return service.db.DeleteSession(ctx, sessionId)
 }
 
-func (service AuthImpl) DeleteAccount(ctx context.Context, user *types.User, currPass string) error {
+func (service ServiceImpl) DeleteAccount(ctx context.Context, user *auth_types.User, currPass string) error {
 	userDb, err := service.db.GetUser(ctx, user.Id)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	currHash := GetHashPassword(currPass, userDb.Salt)
@@ -283,7 +283,7 @@ func (service AuthImpl) DeleteAccount(ctx context.Context, user *types.User, cur
 	return nil
 }
 
-func (service AuthImpl) ChangePassword(ctx context.Context, user *types.User, sessionId string, currPass, newPass string) error {
+func (service ServiceImpl) ChangePassword(ctx context.Context, user *auth_types.User, sessionId string, currPass, newPass string) error {
 	if !isPasswordValid(newPass) {
 		return ErrInvalidPassword
 	}
@@ -308,13 +308,13 @@ func (service AuthImpl) ChangePassword(ctx context.Context, user *types.User, se
 
 	sessions, err := service.db.GetSessions(ctx, user.Id)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 	for _, s := range sessions {
 		if s.Id != sessionId {
 			err = service.db.DeleteSession(ctx, s.Id)
 			if err != nil {
-				return types.ErrInternal
+				return core.ErrInternal
 			}
 		}
 	}
@@ -322,7 +322,7 @@ func (service AuthImpl) ChangePassword(ctx context.Context, user *types.User, se
 	return nil
 }
 
-func (service AuthImpl) SendForgotPasswordMail(ctx context.Context, email string) error {
+func (service ServiceImpl) SendForgotPasswordMail(ctx context.Context, email string) error {
 	tokenStr, err := service.random.String(ctx, 32)
 	if err != nil {
 		return err
@@ -330,38 +330,38 @@ func (service AuthImpl) SendForgotPasswordMail(ctx context.Context, email string
 
 	user, err := service.db.GetUserByEmail(ctx, email)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
+		if errors.Is(err, core.ErrNotFound) {
 			return nil
 		} else {
-			return types.ErrInternal
+			return core.ErrInternal
 		}
 	}
 
-	token := types.NewToken(
+	token := auth_types.NewToken(
 		user.Id,
 		"",
 		tokenStr,
-		types.TokenTypePasswordReset,
+		auth_types.TokenTypePasswordReset,
 		service.clock.Now(),
 		service.clock.Now().Add(15*time.Minute))
 
 	err = service.db.InsertToken(ctx, token)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	var mail strings.Builder
 	err = mailTemplate.ResetPassword(service.serverSettings.BaseUrl, token.Token).Render(context.Background(), &mail)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not render reset password email", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 	service.mail.SendMail(ctx, email, "Reset Password", mail.String())
 
 	return nil
 }
 
-func (service AuthImpl) ForgotPassword(ctx context.Context, tokenStr string, newPass string) error {
+func (service ServiceImpl) ForgotPassword(ctx context.Context, tokenStr string, newPass string) error {
 	if !isPasswordValid(newPass) {
 		return ErrInvalidPassword
 	}
@@ -376,7 +376,7 @@ func (service AuthImpl) ForgotPassword(ctx context.Context, tokenStr string, new
 		return err
 	}
 
-	if token.Type != types.TokenTypePasswordReset ||
+	if token.Type != auth_types.TokenTypePasswordReset ||
 		token.ExpiresAt.Before(service.clock.Now()) {
 		return ErrTokenInvalid
 	}
@@ -384,7 +384,7 @@ func (service AuthImpl) ForgotPassword(ctx context.Context, tokenStr string, new
 	user, err := service.db.GetUser(ctx, token.UserId)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not get user from token", "err", err)
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	passHash := GetHashPassword(newPass, user.Salt)
@@ -397,26 +397,26 @@ func (service AuthImpl) ForgotPassword(ctx context.Context, tokenStr string, new
 
 	sessions, err := service.db.GetSessions(ctx, user.Id)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	for _, session := range sessions {
 		err = service.db.DeleteSession(ctx, session.Id)
 		if err != nil {
-			return types.ErrInternal
+			return core.ErrInternal
 		}
 	}
 
 	return nil
 }
 
-func (service AuthImpl) IsCsrfTokenValid(ctx context.Context, tokenStr string, sessionId string) bool {
+func (service ServiceImpl) IsCsrfTokenValid(ctx context.Context, tokenStr string, sessionId string) bool {
 	token, err := service.db.GetToken(ctx, tokenStr)
 	if err != nil {
 		return false
 	}
 
-	if token.Type != types.TokenTypeCsrf ||
+	if token.Type != auth_types.TokenTypeCsrf ||
 		token.SessionId != sessionId ||
 		token.ExpiresAt.Before(service.clock.Now()) {
 		return false
@@ -425,12 +425,12 @@ func (service AuthImpl) IsCsrfTokenValid(ctx context.Context, tokenStr string, s
 	return true
 }
 
-func (service AuthImpl) GetCsrfToken(ctx context.Context, session *types.Session) (string, error) {
+func (service ServiceImpl) GetCsrfToken(ctx context.Context, session *auth_types.Session) (string, error) {
 	if session == nil {
-		return "", types.ErrInternal
+		return "", core.ErrInternal
 	}
 
-	tokens, _ := service.db.GetTokensBySessionIdAndType(ctx, session.Id, types.TokenTypeCsrf)
+	tokens, _ := service.db.GetTokensBySessionIdAndType(ctx, session.Id, auth_types.TokenTypeCsrf)
 
 	if len(tokens) > 0 {
 		return tokens[0].Token, nil
@@ -438,19 +438,19 @@ func (service AuthImpl) GetCsrfToken(ctx context.Context, session *types.Session
 
 	tokenStr, err := service.random.String(ctx, 32)
 	if err != nil {
-		return "", types.ErrInternal
+		return "", core.ErrInternal
 	}
 
-	token := types.NewToken(
+	token := auth_types.NewToken(
 		session.UserId,
 		session.Id,
 		tokenStr,
-		types.TokenTypeCsrf,
+		auth_types.TokenTypeCsrf,
 		service.clock.Now(),
 		service.clock.Now().Add(8*time.Hour))
 	err = service.db.InsertToken(ctx, token)
 	if err != nil {
-		return "", types.ErrInternal
+		return "", core.ErrInternal
 	}
 
 	slog.InfoContext(ctx, "CSRF-Token created", "token", tokenStr)
@@ -458,34 +458,34 @@ func (service AuthImpl) GetCsrfToken(ctx context.Context, session *types.Session
 	return tokenStr, nil
 }
 
-func (service AuthImpl) CleanupSessionsAndTokens(ctx context.Context) error {
+func (service ServiceImpl) CleanupSessionsAndTokens(ctx context.Context) error {
 	err := service.db.DeleteOldSessions(ctx)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	err = service.db.DeleteOldTokens(ctx)
 	if err != nil {
-		return types.ErrInternal
+		return core.ErrInternal
 	}
 
 	return nil
 }
 
-func (service AuthImpl) createSession(ctx context.Context, userId uuid.UUID) (*types.Session, error) {
+func (service ServiceImpl) createSession(ctx context.Context, userId uuid.UUID) (*auth_types.Session, error) {
 	sessionId, err := service.random.String(ctx, 32)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	createAt := service.clock.Now()
 	expiresAt := createAt.Add(24 * time.Hour)
 
-	session := types.NewSession(sessionId, userId, createAt, expiresAt)
+	session := auth_types.NewSession(sessionId, userId, createAt, expiresAt)
 
 	err = service.db.InsertSession(ctx, session)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return session, nil

internal/authentication/template/change_password.templ

@@ -1,4 +1,4 @@
-package auth
+package template
 
 templ ChangePasswordComp(isPasswordReset bool) {
 	<form

internal/authentication/template/default.go

@@ -0,0 +1 @@
+package template

internal/authentication/template/delete_account.templ

@@ -1,4 +1,4 @@
-package auth
+package template
 
 templ DeleteAccountComp() {
 	<form

internal/authentication/template/reset_password.templ

@@ -1,4 +1,4 @@
-package auth
+package template
 
 templ ResetPasswordComp() {
 	<form

internal/authentication/template/sign_in_or_up.templ

@@ -1,13 +1,13 @@
-package auth
+package template
 
 templ SignInOrUpComp(isSignIn bool) {
 	{{
-var postUrl string
-if isSignIn {
-	postUrl = "/api/auth/signin"
-} else {
-	postUrl = "/api/auth/signup"
-}
+		var postUrl string
+		if isSignIn {
+			postUrl = "/api/auth/signin"
+		} else {
+			postUrl = "/api/auth/signup"
+		}
 	}}
 	<form
 		class="max-w-xl px-2 mx-auto flex flex-col gap-4 h-full justify-center"

internal/authentication/template/verify.templ

@@ -1,4 +1,4 @@
-package auth
+package template
 
 templ VerifyComp() {
 	<main class="h-full">

internal/authentication/template/verify_response.templ

@@ -1,4 +1,4 @@
-package auth
+package template
 
 templ VerifyResponseComp(isVerified bool) {
 	<main>

internal/budget/db.go

@@ -0,0 +1,97 @@
+package budget
+
+import (
+	"context"
+	"log/slog"
+	"spend-sparrow/internal/core"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+)
+
+type Db interface {
+	Insert(ctx context.Context, budget Budget) (*Budget, error)
+	Update(ctx context.Context, budget Budget) (*Budget, error)
+	Delete(ctx context.Context, userId uuid.UUID, budgetId uuid.UUID) error
+	Get(ctx context.Context, userId uuid.UUID, budgetId uuid.UUID) (*Budget, error)
+	GetAll(ctx context.Context, userId uuid.UUID) ([]Budget, error)
+}
+
+type DbSqlite struct {
+	db *sqlx.DB
+}
+
+func NewDbSqlite(db *sqlx.DB) *DbSqlite {
+	return &DbSqlite{db: db}
+}
+
+func (db DbSqlite) Insert(ctx context.Context, budget Budget) (*Budget, error) {
+	r, err := db.db.ExecContext(ctx, `
+		INSERT INTO budget (id, user_id, name, value, created_at, created_by, updated_at, updated_by) 
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+		budget.Id, budget.UserId, budget.Name, budget.Value, budget.CreatedAt, budget.CreatedBy, budget.UpdatedAt, budget.UpdatedBy,
+	)
+	err = core.TransformAndLogDbError(ctx, "budget", r, err)
+	if err != nil {
+		return nil, core.ErrInternal
+	}
+
+	return db.Get(ctx, budget.UserId, budget.Id)
+}
+
+func (db DbSqlite) Update(ctx context.Context, budget Budget) (*Budget, error) {
+	_, err := db.db.ExecContext(ctx, `
+		UPDATE budget 
+		SET name = ?, 
+			value = ?,
+			updated_at = ?,
+			updated_by = ?
+		WHERE user_id = ?
+		  AND id = ?`,
+		budget.Name, budget.Value, budget.UpdatedAt, budget.UpdatedBy, budget.UserId, budget.Id)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "SQL error UpdateUser", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return db.Get(ctx, budget.UserId, budget.Id)
+}
+
+func (db DbSqlite) Delete(ctx context.Context, userId uuid.UUID, budgetId uuid.UUID) error {
+	r, err := db.db.ExecContext(
+		ctx,
+		"DELETE FROM budget WHERE user_id = ? AND id = ?",
+		userId,
+		budgetId)
+	err = core.TransformAndLogDbError(ctx, "budget", r, err)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (db DbSqlite) Get(ctx context.Context, userId uuid.UUID, budgetId uuid.UUID) (*Budget, error) {
+	var budget Budget
+	err := db.db.Get(&budget, "SELECT * FROM budget WHERE id = ? AND user_id = ?", budgetId, userId)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "Could not get budget", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return &budget, nil
+}
+
+func (db DbSqlite) GetAll(ctx context.Context, userId uuid.UUID) ([]Budget, error) {
+	var budgets []Budget
+	err := db.db.Select(&budgets, "SELECT * FROM budget WHERE user_id = ?", userId)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "Could not GetAll budget", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return budgets, nil
+}

internal/budget/handler.go

@@ -0,0 +1,184 @@
+package budget
+
+import (
+	"fmt"
+	"math"
+	"net/http"
+	"spend-sparrow/internal/core"
+	"strconv"
+
+	"github.com/google/uuid"
+)
+
+const (
+	DECIMALS_MULTIPLIER = 100
+)
+
+type Handler interface {
+	Handle(router *http.ServeMux)
+}
+
+type HandlerImpl struct {
+	s Service
+	r *core.Render
+}
+
+func NewHandler(s Service, r *core.Render) Handler {
+	return HandlerImpl{
+		s: s,
+		r: r,
+	}
+}
+
+func (h HandlerImpl) Handle(r *http.ServeMux) {
+	r.Handle("GET /budget", h.handlePage())
+	r.Handle("GET /budget/new", h.handleNew())
+	r.Handle("GET /budget/{id}", h.handleEdit())
+	r.Handle("POST /budget/{id}", h.handlePost())
+	r.Handle("DELETE /budget/{id}", h.handleDelete())
+}
+
+func (h HandlerImpl) handlePage() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		budgets, err := h.s.GetAll(r.Context(), user)
+		if err != nil {
+			h.r.RenderLayout(r, w, core.ErrorComp(err), user)
+			return
+		}
+
+		comp := page(budgets)
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h HandlerImpl) handleNew() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		comp := editNew()
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h HandlerImpl) handleEdit() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		id, err := uuid.Parse(r.PathValue("id"))
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		budget, err := h.s.Get(r.Context(), user, id)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		comp := edit(*budget)
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h HandlerImpl) handlePost() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		var (
+			id  uuid.UUID
+			err error
+		)
+
+		idStr := r.PathValue("id")
+		if idStr != "new" {
+			id, err = uuid.Parse(idStr)
+			if err != nil {
+				core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+				return
+			}
+		}
+
+		valueF, err := strconv.ParseFloat(r.FormValue("value"), 64)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse value: %w", core.ErrBadRequest))
+			return
+		}
+		value := int64(math.Round(valueF * DECIMALS_MULTIPLIER))
+
+		input := Budget{
+			Id:    id,
+			Name:  r.FormValue("name"),
+			Value: value,
+		}
+
+		if idStr == "new" {
+			_, err = h.s.Add(r.Context(), user, input)
+			if err != nil {
+				core.HandleError(w, r, err)
+				return
+			}
+		} else {
+			_, err = h.s.Update(r.Context(), user, input)
+			if err != nil {
+				core.HandleError(w, r, err)
+				return
+			}
+		}
+
+		core.DoRedirect(w, r, "/budget")
+	}
+}
+
+func (h HandlerImpl) handleDelete() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		idStr := r.PathValue("id")
+		id, err := uuid.Parse(idStr)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		err = h.s.Delete(r.Context(), user, id)
+		if err != nil {
+			core.HandleError(w, r, err)
+			return
+		}
+
+		core.DoRedirect(w, r, "/budget")
+	}
+}

internal/budget/service.go

@@ -0,0 +1,119 @@
+package budget
+
+import (
+	"context"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+
+	"github.com/google/uuid"
+)
+
+type Service interface {
+	Add(ctx context.Context, user *auth_types.User, budget Budget) (*Budget, error)
+	Update(ctx context.Context, user *auth_types.User, budget Budget) (*Budget, error)
+	Delete(ctx context.Context, user *auth_types.User, budgetId uuid.UUID) error
+	Get(ctx context.Context, user *auth_types.User, budgetId uuid.UUID) (*Budget, error)
+	GetAll(ctx context.Context, user *auth_types.User) ([]Budget, error)
+}
+
+type ServiceImpl struct {
+	db     Db
+	clock  core.Clock
+	random core.Random
+}
+
+func NewService(db Db, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
+		db:     db,
+		clock:  clock,
+		random: random,
+	}
+}
+
+func (s ServiceImpl) Add(ctx context.Context, user *auth_types.User, budget Budget) (*Budget, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	isValid := s.isBudgetValid(budget)
+	if !isValid {
+		return nil, core.ErrBadRequest
+	}
+
+	newId, err := s.random.UUID(ctx)
+	if err != nil {
+		return nil, core.ErrInternal
+	}
+
+	budget.Id = newId
+	budget.UserId = user.Id
+	budget.CreatedBy = user.Id
+	budget.CreatedAt = s.clock.Now()
+
+	return s.db.Insert(ctx, budget)
+}
+
+func (s ServiceImpl) Update(ctx context.Context, user *auth_types.User, input Budget) (*Budget, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	budget, err := s.Get(ctx, user, input.Id)
+	if err != nil {
+		return nil, err
+	}
+
+	budget.Name = input.Name
+	budget.Value = input.Value
+
+	if user.Id != budget.UserId {
+		return nil, core.ErrBadRequest
+	}
+
+	isValid := s.isBudgetValid(*budget)
+	if !isValid {
+		return nil, core.ErrBadRequest
+	}
+
+	budget.UpdatedBy = &user.Id
+	now := s.clock.Now()
+	budget.UpdatedAt = &now
+
+	return s.db.Update(ctx, *budget)
+}
+
+func (s ServiceImpl) Delete(ctx context.Context, user *auth_types.User, budgetId uuid.UUID) error {
+	if user == nil {
+		return core.ErrUnauthorized
+	}
+
+	return s.db.Delete(ctx, user.Id, budgetId)
+}
+
+func (s ServiceImpl) Get(ctx context.Context, user *auth_types.User, budgetId uuid.UUID) (*Budget, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	return s.db.Get(ctx, user.Id, budgetId)
+}
+
+func (s ServiceImpl) GetAll(ctx context.Context, user *auth_types.User) ([]Budget, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	return s.db.GetAll(ctx, user.Id)
+}
+
+func (s ServiceImpl) isBudgetValid(budget Budget) bool {
+	err := core.ValidateString(budget.Name, "name")
+	if err != nil {
+		return false
+	}
+	if budget.Value < 0 {
+		return false
+	}
+
+	return true
+}

internal/budget/template.templ

@@ -0,0 +1,138 @@
+package budget
+
+import (
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/tag"
+	"spend-sparrow/internal/template/svg"
+)
+
+templ page(budgets []Budget) {
+	@core.Breadcrumb([]string{"Home", "Budget"}, []string{"/", "/budget"})
+	<div class="flex flex-wrap gap-20 text-xl mt-10 justify-center">
+		@newItem()
+		for _,budget:=range(budgets ) {
+			@item(budget)
+		}
+	</div>
+}
+
+templ editNew() {
+	<div class="flex flex-col h-full">
+		@core.Breadcrumb([]string{"Home", "Budget", "New"}, []string{"/", "/budget", "/budget/new"})
+		<div class="flex justify-center items-center flex-1">
+			<form
+				hx-post={ "/budget/new" }
+				class="grid grid-cols-4 items-center gap-4 max-w-2xl"
+			>
+				<label for="timestamp" class="text-sm text-gray-500">Name</label>
+				<input
+					autofocus
+					name="name"
+					type="text"
+					class="bg-white input datetime col-span-3"
+				/>
+				<label for="value" class="text-sm text-gray-500">Value</label>
+				<input
+					name="value"
+					type="number"
+					class="bg-white input col-span-3"
+				/>
+				<div class="flex gap-6 justify-end col-span-4">
+					<a href="/budget" class="col-start-3 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						<span class="h-4 w-4">
+							@svg.Cancel()
+						</span>
+						<span>
+							Cancel
+						</span>
+					</a>
+					<button type="submit" class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						@svg.Save()
+						<span>
+							Save
+						</span>
+					</button>
+				</div>
+			</form>
+		</div>
+	</div>
+}
+
+templ edit(budget Budget) {
+	<div class="flex flex-col h-full">
+		@core.Breadcrumb([]string{"Home", "Budget", budget.Name}, []string{"/", "/budget", "/budget/" + budget.Id.String()})
+		<div class="flex justify-center items-center flex-1">
+			<form
+				hx-post={ "/budget/" + budget.Id.String() }
+				class="grid grid-cols-4 items-center gap-4 max-w-2xl"
+			>
+				<label for="timestamp" class="text-sm text-gray-500">Name</label>
+				<input
+					autofocus
+					name="name"
+					type="text"
+					value={ budget.Name }
+					class="bg-white input datetime col-span-3"
+				/>
+				<label for="value" class="text-sm text-gray-500">Value</label>
+				<input
+					name="value"
+					type="number"
+					value={ budget.Value / 100 }
+					class="bg-white input col-span-3"
+				/>
+				<label for="tag" class="text-sm text-gray-500">Tags</label>
+				@tag.InlineEditInput("col-span-3")
+				<div class="flex flex-row-reverse gap-6 justify-end col-span-4">
+					<button type="submit" class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						@svg.Save()
+						<span>
+							Save
+						</span>
+					</button>
+					<a href="/budget" class="col-start-3 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						<span class="h-4 w-4">
+							@svg.Cancel()
+						</span>
+						<span>
+							Cancel
+						</span>
+					</a>
+					<button
+						hx-delete={ "/budget/" + budget.Id.String() }
+						hx-confirm={ "Do you really want to delete '" + budget.Name + "'" }
+						class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-red-50 rounded-lg hover:underline flex items-center gap-2 justify-center"
+					>
+						@svg.Delete()
+						<span>
+							Delete
+						</span>
+					</button>
+				</div>
+			</form>
+		</div>
+	</div>
+}
+
+templ newItem() {
+	<a
+		href="/budget/new"
+		class="p-5 w-64 h-64 flex gap-10 active:bg-gray-200 flex-col justify-center items-center hover:bg-gray-100 transition-all cursor-pointer rounded-lg bg-gray-50 border-1 border-gray-300"
+	>
+		New Budget
+		<div class="w-10">
+			@svg.Plus()
+		</div>
+	</a>
+}
+
+templ item(budget Budget) {
+	<a href={ "/budget/" + budget.Id.String() } class="p-5 w-64 h-64 flex gap-10 active:bg-gray-200 flex-col justify-center items-center hover:bg-gray-100 transition-all cursor-pointer rounded-lg bg-gray-50 border-1 border-gray-300">
+		<span>
+			{ budget.Name }
+		</span>
+		<span>
+			{ core.FormatEuros(budget.Value) }
+		</span>
+	</a>
+}

internal/budget/types.go

@@ -0,0 +1,20 @@
+package budget
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Budget struct {
+	Id     uuid.UUID `db:"id"`
+	UserId uuid.UUID `db:"user_id"`
+
+	Name  string `db:"name"`
+	Value int64  `db:"value"`
+
+	CreatedAt time.Time  `db:"created_at"`
+	CreatedBy uuid.UUID  `db:"created_by"`
+	UpdatedAt *time.Time `db:"updated_at"`
+	UpdatedBy *uuid.UUID `db:"updated_by"`
+}

internal/core/auth.go

@@ -0,0 +1,51 @@
+package core
+
+import (
+	"net/http"
+	"spend-sparrow/internal/auth_types"
+)
+
+type ContextKey string
+
+var SessionKey ContextKey = "session"
+var UserKey ContextKey = "user"
+
+func GetUser(r *http.Request) *auth_types.User {
+	obj := r.Context().Value(UserKey)
+	if obj == nil {
+		return nil
+	}
+
+	user, ok := obj.(*auth_types.User)
+	if !ok {
+		return nil
+	}
+
+	return user
+}
+
+func GetSession(r *http.Request) *auth_types.Session {
+	obj := r.Context().Value(SessionKey)
+	if obj == nil {
+		return nil
+	}
+
+	session, ok := obj.(*auth_types.Session)
+	if !ok {
+		return nil
+	}
+
+	return session
+}
+
+func CreateSessionCookie(sessionId string) http.Cookie {
+	return http.Cookie{
+		Name:     "id",
+		Value:    sessionId,
+		MaxAge:   60 * 60 * 8, // 8 hours
+		Secure:   true,
+		HttpOnly: true,
+		SameSite: http.SameSiteStrictMode,
+		Path:     "/",
+	}
+}

internal/core/breadcrumb.templ

@@ -0,0 +1,13 @@
+package core
+
+templ Breadcrumb(elements []string, links []string) {
+	<div class="flex gap-5 mb-10 text-lg items-center">
+		for i, element := range(elements) {
+			if (i>0) {
+				<span class="text-gray-500">&gt;</span><a class="p-2 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline" href={ links[i] }>{ element }</a>
+			} else {
+				<a class="p-2 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline" href={ links[i] }>{ element }</a>
+			}
+		}
+	</div>
+}

internal/core/clock.go

@@ -1,4 +1,4 @@
-package service
+package core
 
 import "time"
 

internal/core/error.go

@@ -0,0 +1,70 @@
+package core
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"log/slog"
+	"net/http"
+	"strings"
+)
+
+var (
+	ErrNotFound      = errors.New("the value does not exist")
+	ErrAlreadyExists = errors.New("row already exists")
+
+	ErrInternal     = errors.New("internal server error")
+	ErrUnauthorized = errors.New("you are not authorized to perform this action")
+
+	ErrBadRequest = errors.New("bad request")
+)
+
+func TransformAndLogDbError(ctx context.Context, module string, r sql.Result, err error) error {
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return ErrNotFound
+		}
+		slog.ErrorContext(ctx, "database sql", "module", module, "err", err)
+		return ErrInternal
+	}
+
+	if r != nil {
+		rows, err := r.RowsAffected()
+		if err != nil {
+			slog.ErrorContext(ctx, "database rows affected", "module", module, "err", err)
+			return ErrInternal
+		}
+
+		if rows == 0 {
+			slog.InfoContext(ctx, "row not found", "module", module)
+			return ErrNotFound
+		}
+	}
+
+	return nil
+}
+
+func HandleError(w http.ResponseWriter, r *http.Request, err error) {
+	switch {
+	case errors.Is(err, ErrUnauthorized):
+		TriggerToastWithStatus(r.Context(), w, r, "error", "You are not autorized to perform this operation.", http.StatusUnauthorized)
+		return
+	case errors.Is(err, ErrBadRequest):
+		TriggerToastWithStatus(r.Context(), w, r, "error", extractErrorMessage(err), http.StatusBadRequest)
+		return
+	case errors.Is(err, ErrNotFound):
+		TriggerToastWithStatus(r.Context(), w, r, "error", extractErrorMessage(err), http.StatusNotFound)
+		return
+	}
+
+	TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
+}
+
+func extractErrorMessage(err error) string {
+	errMsg := err.Error()
+	if errMsg == "" {
+		return ""
+	}
+
+	return strings.SplitN(errMsg, ":", 2)[0]
+}

internal/core/format.go

@@ -1,4 +1,4 @@
-package types
+package core
 
 import (
 	"fmt"

internal/core/http.go

@@ -1,4 +1,4 @@
-package utils
+package core
 
 import (
 	"context"

internal/core/layout.templ

@@ -1,6 +1,9 @@
-package template
+package core
 
-import "spend-sparrow/internal/template/svg"
+import (
+	"spend-sparrow/internal/template/svg"
+	"strings"
+)
 
 func layoutLinkClass(isActive bool) string {
 	common := "text-2xl p-2 text-gray-900 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg"
@@ -87,9 +90,17 @@ templ Layout(slot templ.Component, user templ.Component, loggedIn bool, path str
 
 templ navigation(path string) {
 	<nav class="w-64 text-nowrap flex gap-2 flex-col text-lg mt-5 px-5 pt-2">
-		<a class={ layoutLinkClass(path == "/dashboard") } href="/dashboard">Dashboard</a>
-		<a class={ layoutLinkClass(path == "/transaction") } href="/transaction">Transaction</a>
-		<a class={ layoutLinkClass(path == "/treasurechest") } href="/treasurechest">Treasure Chest</a>
-		<a class={ layoutLinkClass(path == "/account") } href="/account">Account</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/dashboard")) } href="/dashboard">Dashboard</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/transaction")) } href="/transaction">Transaction</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/treasurechest")) } href="/treasurechest">Treasure Chest</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/account")) } href="/account">Account</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/budget")) } href="/budget">Budget</a>
+		<a class={ layoutLinkClass(strings.HasPrefix(path, "/tag")) } href="/tag">Tag</a>
 	</nav>
 }
+
+templ ErrorComp(err error) {
+	<div>
+		The following error occured: { err.Error() }
+	</div>
+}

internal/core/log.go

@@ -1,4 +1,4 @@
-package log
+package core
 
 import (
 	"context"

internal/core/mail.go

@@ -1,11 +1,10 @@
-package service
+package core
 
 import (
 	"context"
 	"fmt"
 	"log/slog"
 	"net/smtp"
-	"spend-sparrow/internal/types"
 )
 
 type Mail interface {
@@ -14,10 +13,10 @@ type Mail interface {
 }
 
 type MailImpl struct {
-	server *types.Settings
+	server *Settings
 }
 
-func NewMail(server *types.Settings) MailImpl {
+func NewMail(server *Settings) MailImpl {
 	return MailImpl{server: server}
 }
 

internal/core/migration.go

@@ -1,10 +1,9 @@
-package db
+package core
 
 import (
 	"context"
 	"errors"
 	"log/slog"
-	"spend-sparrow/internal/types"
 
 	"github.com/golang-migrate/migrate/v4"
 	"github.com/golang-migrate/migrate/v4/database/sqlite3"
@@ -25,7 +24,7 @@ func RunMigrations(ctx context.Context, db *sqlx.DB, pathPrefix string) error {
 	driver, err := sqlite3.WithInstance(db.DB, &sqlite3.Config{})
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not create Migration instance", "err", err)
-		return types.ErrInternal
+		return ErrInternal
 	}
 
 	m, err := migrate.NewWithDatabaseInstance(
@@ -34,14 +33,14 @@ func RunMigrations(ctx context.Context, db *sqlx.DB, pathPrefix string) error {
 		driver)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not create migrations instance", "err", err)
-		return types.ErrInternal
+		return ErrInternal
 	}
 
 	m.Log = migrationLogger{}
 
 	if err = m.Up(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
 		slog.ErrorContext(ctx, "Could not run migrations", "err", err)
-		return types.ErrInternal
+		return ErrInternal
 	}
 
 	return nil

internal/core/observabillity.go

@@ -0,0 +1,16 @@
+package core
+
+import (
+	"net/http"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+func UpdateSpan(r *http.Request) {
+	currentSpan := trace.SpanFromContext(r.Context())
+	if currentSpan != nil {
+		currentSpan.SetAttributes(attribute.String("http.pattern", r.Pattern))
+		currentSpan.SetAttributes(attribute.String("http.pattern.id", r.PathValue("id")))
+	}
+}

internal/core/random_generator.go

@@ -1,11 +1,10 @@
-package service
+package core
 
 import (
 	"context"
 	"crypto/rand"
 	"encoding/base64"
 	"log/slog"
-	"spend-sparrow/internal/types"
 
 	"github.com/google/uuid"
 )
@@ -28,7 +27,7 @@ func (r *RandomImpl) Bytes(ctx context.Context, tsize int) ([]byte, error) {
 	_, err := rand.Read(b)
 	if err != nil {
 		slog.ErrorContext(ctx, "Error generating random bytes", "err", err)
-		return []byte{}, types.ErrInternal
+		return []byte{}, ErrInternal
 	}
 
 	return b, nil
@@ -38,7 +37,7 @@ func (r *RandomImpl) String(ctx context.Context, size int) (string, error) {
 	bytes, err := r.Bytes(ctx, size)
 	if err != nil {
 		slog.ErrorContext(ctx, "Error generating random string", "err", err)
-		return "", types.ErrInternal
+		return "", ErrInternal
 	}
 
 	return base64.StdEncoding.EncodeToString(bytes), nil
@@ -48,7 +47,7 @@ func (r *RandomImpl) UUID(ctx context.Context) (uuid.UUID, error) {
 	id, err := uuid.NewRandom()
 	if err != nil {
 		slog.ErrorContext(ctx, "Error generating random UUID", "err", err)
-		return uuid.Nil, types.ErrInternal
+		return uuid.Nil, ErrInternal
 	}
 
 	return id, nil

internal/core/render.go

@@ -1,11 +1,9 @@
-package handler
+package core
 
 import (
 	"log/slog"
 	"net/http"
-	"spend-sparrow/internal/template"
-	"spend-sparrow/internal/template/auth"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
 
 	"github.com/a-h/templ"
 )
@@ -31,21 +29,21 @@ func (render *Render) Render(r *http.Request, w http.ResponseWriter, comp templ.
 	render.RenderWithStatus(r, w, comp, http.StatusOK)
 }
 
-func (render *Render) RenderLayout(r *http.Request, w http.ResponseWriter, slot templ.Component, user *types.User) {
+func (render *Render) RenderLayout(r *http.Request, w http.ResponseWriter, slot templ.Component, user *auth_types.User) {
 	render.RenderLayoutWithStatus(r, w, slot, user, http.StatusOK)
 }
 
-func (render *Render) RenderLayoutWithStatus(r *http.Request, w http.ResponseWriter, slot templ.Component, user *types.User, status int) {
+func (render *Render) RenderLayoutWithStatus(r *http.Request, w http.ResponseWriter, slot templ.Component, user *auth_types.User, status int) {
 	userComp := render.getUserComp(user)
-	layout := template.Layout(slot, userComp, user != nil, r.URL.Path)
+	layout := Layout(slot, userComp, user != nil, r.URL.Path)
 
 	render.RenderWithStatus(r, w, layout, status)
 }
 
-func (render *Render) getUserComp(user *types.User) templ.Component {
+func (render *Render) getUserComp(user *auth_types.User) templ.Component {
 	if user != nil {
-		return auth.UserComp(user.Email)
+		return UserComp(user.Email)
 	} else {
-		return auth.UserComp("")
+		return UserComp("")
 	}
 }

internal/core/settings.go

@@ -1,4 +1,4 @@
-package types
+package core
 
 import (
 	"context"

internal/core/user.templ

@@ -1,4 +1,4 @@
-package auth
+package core
 
 templ UserComp(user string) {
 	<div id="user-info" class="flex items-center gap-2 text-nowrap">

internal/core/validate_string.go

@@ -1,19 +1,15 @@
-package service
+package core
 
 import (
 	"fmt"
 	"regexp"
 )
 
-const (
-	DECIMALS_MULTIPLIER = 100
-)
-
 var (
-	safeInputRegex = regexp.MustCompile(`^[a-zA-Z0-9ÄÖÜäöüß,&'". \-\?]+$`)
+	safeInputRegex = regexp.MustCompile(`^[a-zA-Z0-9ÄÖÜäöüß,&'". \-\?\(\)]+$`)
 )
 
-func validateString(value string, fieldName string) error {
+func ValidateString(value string, fieldName string) error {
 	switch {
 	case value == "":
 		return fmt.Errorf("field \"%s\" needs to be set: %w", fieldName, ErrBadRequest)

internal/dashboard/handler.go

@@ -1,87 +1,89 @@
-package handler
+package dashboard
 
 import (
 	"fmt"
 	"log/slog"
 	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/template/dashboard"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/treasure_chest"
+	"strings"
 	"time"
 
 	"github.com/google/uuid"
 )
 
-type Dashboard interface {
+type Handler interface {
 	Handle(router *http.ServeMux)
 }
 
-type DashboardImpl struct {
-	r             *Render
-	d             *service.Dashboard
-	treasureChest service.TreasureChest
+type HandlerImpl struct {
+	r             *core.Render
+	s             *Service
+	treasureChest treasure_chest.Service
 }
 
-func NewDashboard(r *Render, d *service.Dashboard, treasureChest service.TreasureChest) Dashboard {
-	return DashboardImpl{
+func NewHandler(r *core.Render, s *Service, treasureChest treasure_chest.Service) Handler {
+	return HandlerImpl{
 		r:             r,
-		d:             d,
+		s:             s,
 		treasureChest: treasureChest,
 	}
 }
 
-func (handler DashboardImpl) Handle(router *http.ServeMux) {
+func (handler HandlerImpl) Handle(router *http.ServeMux) {
 	router.Handle("GET /dashboard", handler.handleDashboard())
-	router.Handle("GET /dashboard/main-chart", handler.handleDashboardMainChart())
-	router.Handle("GET /dashboard/treasure-chests", handler.handleDashboardTreasureChests())
-	router.Handle("GET /dashboard/treasure-chest", handler.handleDashboardTreasureChest())
+	router.Handle("GET /dashboard/main-chart", handler.handleMainChart())
+	router.Handle("GET /dashboard/treasure-chests", handler.handleTreasureChests())
+	router.Handle("GET /dashboard/treasure-chest", handler.handleTreasureChest())
 }
 
-func (handler DashboardImpl) handleDashboard() http.HandlerFunc {
+func (handler HandlerImpl) handleDashboard() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		treasureChests, err := handler.treasureChest.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
-		comp := dashboard.Dashboard(treasureChests)
+		comp := DashboardComp(treasureChests)
 		handler.r.RenderLayoutWithStatus(r, w, comp, user, http.StatusOK)
 	}
 }
 
-func (handler DashboardImpl) handleDashboardMainChart() http.HandlerFunc {
+func (handler HandlerImpl) handleMainChart() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
-		series, err := handler.d.MainChart(r.Context(), user)
+		series, err := handler.s.MainChart(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 
-		account := ""
-		savings := ""
+		accountBuilder := strings.Builder{}
+		savingsBuilder := strings.Builder{}
 
 		for _, entry := range series {
-			account += fmt.Sprintf(`["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Value)/100)
-			savings += fmt.Sprintf(`["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Savings)/100)
+			fmt.Fprintf(&accountBuilder, `["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Value)/100)
+			fmt.Fprintf(&savingsBuilder, `["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Savings)/100)
 		}
 
+		account := accountBuilder.String()
+		savings := savingsBuilder.String()
+
 		account = account[:len(account)-1]
 		savings = savings[:len(savings)-1]
 
@@ -122,38 +124,39 @@ func (handler DashboardImpl) handleDashboardMainChart() http.HandlerFunc {
 	}
 }
 
-func (handler DashboardImpl) handleDashboardTreasureChests() http.HandlerFunc {
+func (handler HandlerImpl) handleTreasureChests() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
-		treeList, err := handler.d.TreasureChests(r.Context(), user)
+		treeList, err := handler.s.TreasureChests(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 
-		data := ""
+		dataBuilder := strings.Builder{}
 
 		for _, item := range treeList {
-			children := ""
+			childrenBuilder := strings.Builder{}
 
 			for _, child := range item.Children {
 				if child.Value < 0 {
-					children += fmt.Sprintf(`{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, -child.Value)
+					fmt.Fprintf(&childrenBuilder, `{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, -child.Value)
 				} else {
-					children += fmt.Sprintf(`{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, child.Value)
+					fmt.Fprintf(&childrenBuilder, `{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, child.Value)
 				}
 			}
 
+			children := childrenBuilder.String()
 			children = children[:len(children)-1]
-			data += fmt.Sprintf(`{"name":"%s","children":[%s]},`, item.Name, children)
+			fmt.Fprintf(&dataBuilder, `{"name":"%s","children":[%s]},`, item.Name, children)
 		}
-
+		data := dataBuilder.String()
 		data = data[:len(data)-1]
 
 		_, err = fmt.Fprintf(w, `
@@ -176,11 +179,11 @@ func (handler DashboardImpl) handleDashboardTreasureChests() http.HandlerFunc {
 	}
 }
 
-func (handler DashboardImpl) handleDashboardTreasureChest() http.HandlerFunc {
+func (handler HandlerImpl) handleTreasureChest() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
 		var treasureChestId *uuid.UUID
 
@@ -188,28 +191,30 @@ func (handler DashboardImpl) handleDashboardTreasureChest() http.HandlerFunc {
 		if treasureChestStr != "" {
 			id, err := uuid.Parse(treasureChestStr)
 			if err != nil {
-				handleError(w, r, fmt.Errorf("could not parse treasure chest: %w", service.ErrBadRequest))
+				core.HandleError(w, r, fmt.Errorf("could not parse treasure chest: %w", core.ErrBadRequest))
 				return
 			}
 
 			treasureChestId = &id
 		}
 
-		series, err := handler.d.TreasureChest(r.Context(), user, treasureChestId)
+		series, err := handler.s.TreasureChest(r.Context(), user, treasureChestId)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 
-		value := ""
+		valueBuilder := strings.Builder{}
 
 		for _, entry := range series {
-			value += fmt.Sprintf(`["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Value)/100)
+			fmt.Fprintf(&valueBuilder, `["%s",%.2f],`, entry.Day.Format(time.RFC3339), float64(entry.Value)/100)
 		}
 
+		value := valueBuilder.String()
+
 		if len(value) > 0 {
 			value = value[:len(value)-1]
 		}

internal/dashboard/service.go

@@ -1,47 +1,50 @@
-package service
+package dashboard
 
 import (
 	"context"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/transaction"
+	"spend-sparrow/internal/treasure_chest"
+	"spend-sparrow/internal/treasure_chest_types"
 	"time"
 
 	"github.com/google/uuid"
 	"github.com/jmoiron/sqlx"
 )
 
-type Dashboard struct {
+type Service struct {
 	db *sqlx.DB
 }
 
-func NewDashboard(db *sqlx.DB) *Dashboard {
-	return &Dashboard{
+func NewService(db *sqlx.DB) *Service {
+	return &Service{
 		db: db,
 	}
 }
 
-func (s Dashboard) MainChart(
+func (s Service) MainChart(
 	ctx context.Context,
-	user *types.User,
-) ([]types.DashboardMainChartEntry, error) {
+	user *auth_types.User,
+) ([]DashboardMainChartEntry, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	transactions := make([]types.Transaction, 0)
+	transactions := make([]transaction.Transaction, 0)
 	err := s.db.SelectContext(ctx, &transactions, `
 		SELECT *
 		FROM "transaction" 
 		WHERE user_id = ?
 		ORDER BY timestamp`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "dashboard Chart", nil, err)
+	err = core.TransformAndLogDbError(ctx, "dashboard Chart", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
-	timeEntries := make([]types.DashboardMainChartEntry, 0)
+	timeEntries := make([]DashboardMainChartEntry, 0)
 
-	var lastEntry *types.DashboardMainChartEntry
+	var lastEntry *DashboardMainChartEntry
 
 	for _, t := range transactions {
 		if t.Error != nil {
@@ -50,14 +53,14 @@ func (s Dashboard) MainChart(
 
 		newDay := t.Timestamp.Truncate(24 * time.Hour)
 		if lastEntry == nil {
-			lastEntry = &types.DashboardMainChartEntry{
+			lastEntry = &DashboardMainChartEntry{
 				Day:     newDay,
 				Value:   0,
 				Savings: 0,
 			}
 		} else if lastEntry.Day != newDay {
 			timeEntries = append(timeEntries, *lastEntry)
-			lastEntry = &types.DashboardMainChartEntry{
+			lastEntry = &DashboardMainChartEntry{
 				Day:     newDay,
 				Value:   lastEntry.Value,
 				Savings: lastEntry.Savings,
@@ -80,37 +83,37 @@ func (s Dashboard) MainChart(
 	return timeEntries, nil
 }
 
-func (s Dashboard) TreasureChests(
+func (s Service) TreasureChests(
 	ctx context.Context,
-	user *types.User,
-) ([]*types.DashboardTreasureChest, error) {
+	user *auth_types.User,
+) ([]*DashboardTreasureChest, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	treasureChests := make([]*types.TreasureChest, 0)
+	treasureChests := make([]*treasure_chest_types.TreasureChest, 0)
 	err := s.db.SelectContext(ctx, &treasureChests, `SELECT * FROM treasure_chest WHERE user_id = ?`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "dashboard TreasureChests", nil, err)
+	err = core.TransformAndLogDbError(ctx, "dashboard TreasureChests", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
-	treasureChests = sortTreasureChests(treasureChests)
+	treasureChests = treasure_chest.SortTreasureChests(treasureChests)
 
-	result := make([]*types.DashboardTreasureChest, 0)
+	result := make([]*DashboardTreasureChest, 0)
 
 	for _, t := range treasureChests {
 		if t.ParentId == nil {
-			result = append(result, &types.DashboardTreasureChest{
+			result = append(result, &DashboardTreasureChest{
 				Name:     t.Name,
 				Value:    t.CurrentBalance,
-				Children: make([]types.DashboardTreasureChest, 0),
+				Children: make([]DashboardTreasureChest, 0),
 			})
 		} else {
-			result[len(result)-1].Children = append(result[len(result)-1].Children, types.DashboardTreasureChest{
+			result[len(result)-1].Children = append(result[len(result)-1].Children, DashboardTreasureChest{
 				Name:     t.Name,
 				Value:    t.CurrentBalance,
-				Children: make([]types.DashboardTreasureChest, 0),
+				Children: make([]DashboardTreasureChest, 0),
 			})
 		}
 	}
@@ -118,30 +121,30 @@ func (s Dashboard) TreasureChests(
 	return result, nil
 }
 
-func (s Dashboard) TreasureChest(
+func (s Service) TreasureChest(
 	ctx context.Context,
-	user *types.User,
+	user *auth_types.User,
 	treausureChestId *uuid.UUID,
-) ([]types.DashboardMainChartEntry, error) {
+) ([]DashboardMainChartEntry, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	transactions := make([]types.Transaction, 0)
+	transactions := make([]transaction.Transaction, 0)
 	err := s.db.SelectContext(ctx, &transactions, `
 		SELECT *
 		FROM "transaction" 
 		WHERE user_id = ?
 		  AND treasure_chest_id = ?
 		ORDER BY timestamp`, user.Id, treausureChestId)
-	err = db.TransformAndLogDbError(ctx, "dashboard Chart", nil, err)
+	err = core.TransformAndLogDbError(ctx, "dashboard Chart", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
-	timeEntries := make([]types.DashboardMainChartEntry, 0)
+	timeEntries := make([]DashboardMainChartEntry, 0)
 
-	var lastEntry *types.DashboardMainChartEntry
+	var lastEntry *DashboardMainChartEntry
 
 	for _, t := range transactions {
 		if t.Error != nil {
@@ -150,13 +153,13 @@ func (s Dashboard) TreasureChest(
 
 		newDay := t.Timestamp.Truncate(24 * time.Hour)
 		if lastEntry == nil {
-			lastEntry = &types.DashboardMainChartEntry{
+			lastEntry = &DashboardMainChartEntry{
 				Day:   newDay,
 				Value: 0,
 			}
 		} else if lastEntry.Day != newDay {
 			timeEntries = append(timeEntries, *lastEntry)
-			lastEntry = &types.DashboardMainChartEntry{
+			lastEntry = &DashboardMainChartEntry{
 				Day:   newDay,
 				Value: lastEntry.Value,
 			}

internal/dashboard/template.templ

@@ -1,8 +1,8 @@
 package dashboard
 
-import "spend-sparrow/internal/types"
+import "spend-sparrow/internal/treasure_chest_types"
 
-templ Dashboard(treasureChests []*types.TreasureChest) {
+templ DashboardComp(treasureChests []*treasure_chest_types.TreasureChest) {
 	<div class="mt-10 h-full">
 		<div id="main-chart" class="h-96 mt-10"></div>
 		<div id="treasure-chests" class="h-96 mt-10"></div>

internal/dashboard/types.go

@@ -1,4 +1,4 @@
-package types
+package dashboard
 
 import "time"
 

internal/db/error.go

@@ -1,39 +0,0 @@
-package db
-
-import (
-	"context"
-	"database/sql"
-	"errors"
-	"log/slog"
-	"spend-sparrow/internal/types"
-)
-
-var (
-	ErrNotFound      = errors.New("the value does not exist")
-	ErrAlreadyExists = errors.New("row already exists")
-)
-
-func TransformAndLogDbError(ctx context.Context, module string, r sql.Result, err error) error {
-	if err != nil {
-		if errors.Is(err, sql.ErrNoRows) {
-			return ErrNotFound
-		}
-		slog.ErrorContext(ctx, "database sql", "module", module, "err", err)
-		return types.ErrInternal
-	}
-
-	if r != nil {
-		rows, err := r.RowsAffected()
-		if err != nil {
-			slog.ErrorContext(ctx, "database rows affected", "module", module, "err", err)
-			return types.ErrInternal
-		}
-
-		if rows == 0 {
-			slog.InfoContext(ctx, "row not found", "module", module)
-			return ErrNotFound
-		}
-	}
-
-	return nil
-}

internal/default.go

@@ -1,19 +1,23 @@
 package internal
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"log/slog"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/handler"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/log"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/types"
-
-	"context"
 	"net/http"
 	"os/signal"
+	"spend-sparrow/internal/account"
+	"spend-sparrow/internal/authentication"
+	"spend-sparrow/internal/budget"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/dashboard"
+	"spend-sparrow/internal/handler"
+	"spend-sparrow/internal/handler/middleware"
+	"spend-sparrow/internal/tag"
+	"spend-sparrow/internal/transaction"
+	"spend-sparrow/internal/transaction_recurring"
+	"spend-sparrow/internal/treasure_chest"
 	"sync"
 	"syscall"
 	"time"
@@ -27,8 +31,8 @@ func Run(ctx context.Context, database *sqlx.DB, migrationsPrefix string, env fu
 	ctx, cancel := signal.NotifyContext(ctx, syscall.SIGINT, syscall.SIGTERM)
 	defer cancel()
 
-	otelEnabled := types.IsOtelEnabled(env)
-	if otelEnabled {
+	isOtelEnabled := core.IsOtelEnabled(env)
+	if isOtelEnabled {
 		// use context.Background(), otherwise the shutdown can't be called, as the context is already cancelled
 		otelShutdown, err := setupOTelSDK(context.Background())
 		if err != nil {
@@ -44,19 +48,19 @@ func Run(ctx context.Context, database *sqlx.DB, migrationsPrefix string, env fu
 			cancel()
 		}()
 
-		slog.SetDefault(log.NewLogPropagator())
+		slog.SetDefault(core.NewLogPropagator())
 	}
 
 	slog.InfoContext(ctx, "Starting server...")
 
 	// init server settings
-	serverSettings, err := types.NewSettingsFromEnv(ctx, env)
+	serverSettings, err := core.NewSettingsFromEnv(ctx, env)
 	if err != nil {
 		return err
 	}
 
 	// init db
-	err = db.RunMigrations(ctx, database, migrationsPrefix)
+	err = core.RunMigrations(ctx, database, migrationsPrefix)
 	if err != nil {
 		return fmt.Errorf("could not run migrations: %w", err)
 	}
@@ -64,7 +68,7 @@ func Run(ctx context.Context, database *sqlx.DB, migrationsPrefix string, env fu
 	// init server
 	httpServer := &http.Server{
 		Addr:              ":" + serverSettings.Port,
-		Handler:           createHandlerWithServices(ctx, database, serverSettings),
+		Handler:           createHandlerWithServices(ctx, database, serverSettings, isOtelEnabled),
 		ReadHeaderTimeout: 2 * time.Second,
 	}
 	go startServer(ctx, httpServer)
@@ -103,32 +107,38 @@ func shutdownServer(ctx context.Context, s *http.Server, wg *sync.WaitGroup) {
 	}
 }
 
-func createHandlerWithServices(ctx context.Context, d *sqlx.DB, serverSettings *types.Settings) http.Handler {
+func createHandlerWithServices(ctx context.Context, d *sqlx.DB, serverSettings *core.Settings, isOtelEnabled bool) http.Handler {
 	var router = http.NewServeMux()
 
-	authDb := db.NewAuthSqlite(d)
+	authDb := authentication.NewDbSqlite(d)
+	budgetDb := budget.NewDbSqlite(d)
+	tagDb := tag.NewDbSqlite(d)
 
-	randomService := service.NewRandom()
-	clockService := service.NewClock()
-	mailService := service.NewMail(serverSettings)
+	randomService := core.NewRandom()
+	clockService := core.NewClock()
+	mailService := core.NewMail(serverSettings)
 
-	authService := service.NewAuth(authDb, randomService, clockService, mailService, serverSettings)
-	accountService := service.NewAccount(d, randomService, clockService)
-	treasureChestService := service.NewTreasureChest(d, randomService, clockService)
-	transactionService := service.NewTransaction(d, randomService, clockService)
-	transactionRecurringService := service.NewTransactionRecurring(d, randomService, clockService, transactionService)
-	dashboardService := service.NewDashboard(d)
+	authService := authentication.NewService(authDb, randomService, clockService, mailService, serverSettings)
+	accountService := account.NewServiceImpl(d, randomService, clockService)
+	treasureChestService := treasure_chest.NewService(d, randomService, clockService)
+	transactionService := transaction.NewService(d, randomService, clockService)
+	transactionRecurringService := transaction_recurring.NewService(d, randomService, clockService)
+	dashboardService := dashboard.NewService(d)
+	budgetService := budget.NewService(budgetDb, randomService, clockService)
+	tagService := tag.NewService(tagDb, randomService, clockService)
 
-	render := handler.NewRender()
+	render := core.NewRender()
 	indexHandler := handler.NewIndex(render, clockService)
-	dashboardHandler := handler.NewDashboard(render, dashboardService, treasureChestService)
-	authHandler := handler.NewAuth(authService, render)
-	accountHandler := handler.NewAccount(accountService, render)
-	treasureChestHandler := handler.NewTreasureChest(treasureChestService, transactionRecurringService, render)
-	transactionHandler := handler.NewTransaction(transactionService, accountService, treasureChestService, render)
-	transactionRecurringHandler := handler.NewTransactionRecurring(transactionRecurringService, render)
+	dashboardHandler := dashboard.NewHandler(render, dashboardService, treasureChestService)
+	authHandler := authentication.NewHandler(authService, render)
+	accountHandler := account.NewHandler(accountService, render)
+	treasureChestHandler := treasure_chest.NewHandler(treasureChestService, transactionRecurringService, render)
+	transactionHandler := transaction.NewHandler(transactionService, accountService, treasureChestService, render)
+	transactionRecurringHandler := transaction_recurring.NewHandler(transactionRecurringService, render)
+	budgetHandler := budget.NewHandler(budgetService, render)
+	tagHandler := tag.NewHandler(tagService, render)
 
-	go dailyTaskTimer(ctx, transactionRecurringService, authService)
+	go dailyTaskTimer(ctx, transactionService, authService)
 
 	indexHandler.Handle(router)
 	dashboardHandler.Handle(router)
@@ -137,6 +147,8 @@ func createHandlerWithServices(ctx context.Context, d *sqlx.DB, serverSettings *
 	authHandler.Handle(router)
 	transactionHandler.Handle(router)
 	transactionRecurringHandler.Handle(router)
+	budgetHandler.Handle(router)
+	tagHandler.Handle(router)
 
 	// Serve static files (CSS, JS and images)
 	router.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./static/"))))
@@ -148,7 +160,7 @@ func createHandlerWithServices(ctx context.Context, d *sqlx.DB, serverSettings *
 		middleware.CrossSiteRequestForgery(authService),
 		middleware.Authenticate(authService),
 		middleware.Gzip,
-		middleware.Log,
+		middleware.Log(isOtelEnabled),
 	)
 
 	wrapper = otelhttp.NewHandler(wrapper, "http.request")
@@ -156,8 +168,8 @@ func createHandlerWithServices(ctx context.Context, d *sqlx.DB, serverSettings *
 	return wrapper
 }
 
-func dailyTaskTimer(ctx context.Context, transactionRecurring service.TransactionRecurring, auth service.Auth) {
-	runDailyTasks(ctx, transactionRecurring, auth)
+func dailyTaskTimer(ctx context.Context, transaction transaction.Service, auth authentication.Service) {
+	runDailyTasks(ctx, transaction, auth)
 	ticker := time.NewTicker(24 * time.Hour)
 	defer ticker.Stop()
 
@@ -166,13 +178,13 @@ func dailyTaskTimer(ctx context.Context, transactionRecurring service.Transactio
 		case <-ctx.Done():
 			return
 		case <-ticker.C:
-			runDailyTasks(ctx, transactionRecurring, auth)
+			runDailyTasks(ctx, transaction, auth)
 		}
 	}
 }
 
-func runDailyTasks(ctx context.Context, transactionRecurring service.TransactionRecurring, auth service.Auth) {
+func runDailyTasks(ctx context.Context, transaction transaction.Service, auth authentication.Service) {
 	slog.InfoContext(ctx, "Running daily tasks")
-	_ = transactionRecurring.GenerateTransactions(ctx)
+	_ = transaction.GenerateRecurringTransactions(ctx)
 	_ = auth.CleanupSessionsAndTokens(ctx)
 }

internal/handler/default.go

@@ -1,46 +0,0 @@
-package handler
-
-import (
-	"errors"
-	"net/http"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/utils"
-	"strings"
-
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/trace"
-)
-
-func handleError(w http.ResponseWriter, r *http.Request, err error) {
-	switch {
-	case errors.Is(err, service.ErrUnauthorized):
-		utils.TriggerToastWithStatus(r.Context(), w, r, "error", "You are not autorized to perform this operation.", http.StatusUnauthorized)
-		return
-	case errors.Is(err, service.ErrBadRequest):
-		utils.TriggerToastWithStatus(r.Context(), w, r, "error", extractErrorMessage(err), http.StatusBadRequest)
-		return
-	case errors.Is(err, db.ErrNotFound):
-		utils.TriggerToastWithStatus(r.Context(), w, r, "error", extractErrorMessage(err), http.StatusNotFound)
-		return
-	}
-
-	utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Internal Server Error", http.StatusInternalServerError)
-}
-
-func extractErrorMessage(err error) string {
-	errMsg := err.Error()
-	if errMsg == "" {
-		return ""
-	}
-
-	return strings.SplitN(errMsg, ":", 2)[0]
-}
-
-func updateSpan(r *http.Request) {
-	currentSpan := trace.SpanFromContext(r.Context())
-	if currentSpan != nil {
-		currentSpan.SetAttributes(attribute.String("http.pattern", r.Pattern))
-		currentSpan.SetAttributes(attribute.String("http.pattern.id", r.PathValue("id")))
-	}
-}

internal/handler/middleware/authenticate.go

@@ -3,18 +3,12 @@ package middleware
 import (
 	"context"
 	"net/http"
+	"spend-sparrow/internal/authentication"
+	"spend-sparrow/internal/core"
 	"strings"
-
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/types"
 )
 
-type ContextKey string
-
-var SessionKey ContextKey = "session"
-var UserKey ContextKey = "user"
-
-func Authenticate(service service.Auth) func(http.Handler) http.Handler {
+func Authenticate(service authentication.Service) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			ctx := r.Context()
@@ -37,46 +31,18 @@ func Authenticate(service service.Auth) func(http.Handler) http.Handler {
 					return
 				}
 
-				cookie := CreateSessionCookie(session.Id)
+				cookie := core.CreateSessionCookie(session.Id)
 				http.SetCookie(w, &cookie)
 			}
 
-			ctx = context.WithValue(ctx, UserKey, user)
-			ctx = context.WithValue(ctx, SessionKey, session)
+			ctx = context.WithValue(ctx, core.UserKey, user)
+			ctx = context.WithValue(ctx, core.SessionKey, session)
 
 			next.ServeHTTP(w, r.WithContext(ctx))
 		})
 	}
 }
 
-func GetUser(r *http.Request) *types.User {
-	obj := r.Context().Value(UserKey)
-	if obj == nil {
-		return nil
-	}
-
-	user, ok := obj.(*types.User)
-	if !ok {
-		return nil
-	}
-
-	return user
-}
-
-func GetSession(r *http.Request) *types.Session {
-	obj := r.Context().Value(SessionKey)
-	if obj == nil {
-		return nil
-	}
-
-	session, ok := obj.(*types.Session)
-	if !ok {
-		return nil
-	}
-
-	return session
-}
-
 func getSessionID(r *http.Request) string {
 	cookie, err := r.Cookie("id")
 	if err != nil {

internal/handler/middleware/cross_site_request_forgery.go

@@ -3,8 +3,8 @@ package middleware
 import (
 	"log/slog"
 	"net/http"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/authentication"
+	"spend-sparrow/internal/core"
 	"strings"
 )
 
@@ -30,7 +30,7 @@ func (rr *csrfResponseWriter) Write(data []byte) (int, error) {
 	return rr.ResponseWriter.Write([]byte(dataStr))
 }
 
-func CrossSiteRequestForgery(auth service.Auth) func(http.Handler) http.Handler {
+func CrossSiteRequestForgery(auth authentication.Service) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			ctx := r.Context()
@@ -40,7 +40,7 @@ func CrossSiteRequestForgery(auth service.Auth) func(http.Handler) http.Handler
 				return
 			}
 
-			session := GetSession(r)
+			session := core.GetSession(r)
 
 			if r.Method == http.MethodPost ||
 				r.Method == http.MethodPut ||
@@ -51,7 +51,7 @@ func CrossSiteRequestForgery(auth service.Auth) func(http.Handler) http.Handler
 				if session == nil || csrfToken == "" || !auth.IsCsrfTokenValid(ctx, csrfToken, session.Id) {
 					slog.InfoContext(ctx, "CSRF-Token not correct", "token", csrfToken)
 					if r.Header.Get("Hx-Request") == "true" {
-						utils.TriggerToastWithStatus(ctx, w, r, "error", "CSRF-Token not correct", http.StatusBadRequest)
+						core.TriggerToastWithStatus(ctx, w, r, "error", "CSRF-Token not correct", http.StatusBadRequest)
 					} else {
 						http.Error(w, "CSRF-Token not correct", http.StatusBadRequest)
 					}
@@ -62,7 +62,7 @@ func CrossSiteRequestForgery(auth service.Auth) func(http.Handler) http.Handler
 			token, err := auth.GetCsrfToken(ctx, session)
 			if err != nil {
 				if r.Header.Get("Hx-Request") == "true" {
-					utils.TriggerToastWithStatus(ctx, w, r, "error", "Could not generate CSRF Token", http.StatusBadRequest)
+					core.TriggerToastWithStatus(ctx, w, r, "error", "Could not generate CSRF Token", http.StatusBadRequest)
 				} else {
 					http.Error(w, "Could not generate CSRF Token", http.StatusBadRequest)
 				}

internal/handler/middleware/default.go

@@ -1,15 +1 @@
 package middleware
-
-import "net/http"
-
-func CreateSessionCookie(sessionId string) http.Cookie {
-	return http.Cookie{
-		Name:     "id",
-		Value:    sessionId,
-		MaxAge:   60 * 60 * 8, // 8 hours
-		Secure:   true,
-		HttpOnly: true,
-		SameSite: http.SameSiteStrictMode,
-		Path:     "/",
-	}
-}

internal/handler/middleware/logger.go

@@ -17,21 +17,28 @@ func (w *WrappedWriter) WriteHeader(code int) {
 	w.ResponseWriter.WriteHeader(code)
 }
 
-func Log(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		start := time.Now()
+func Log(enabled bool) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			if !enabled {
+				next.ServeHTTP(w, r)
+				return
+			}
 
-		wrapped := &WrappedWriter{
-			ResponseWriter: w,
-			StatusCode:     http.StatusOK,
-		}
-		next.ServeHTTP(wrapped, r)
+			start := time.Now()
 
-		slog.InfoContext(r.Context(), "request",
-			"remoteAddr", r.RemoteAddr,
-			"status", wrapped.StatusCode,
-			"method", r.Method,
-			"path", r.URL.Path,
-			"duration", time.Since(start).String())
-	})
+			wrapped := &WrappedWriter{
+				ResponseWriter: w,
+				StatusCode:     http.StatusOK,
+			}
+			next.ServeHTTP(wrapped, r)
+
+			slog.InfoContext(r.Context(), "request",
+				"remoteAddr", r.RemoteAddr,
+				"status", wrapped.StatusCode,
+				"method", r.Method,
+				"path", r.URL.Path,
+				"duration", time.Since(start).String())
+		})
+	}
 }

internal/handler/middleware/security_headers.go

@@ -2,10 +2,10 @@ package middleware
 
 import (
 	"net/http"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/core"
 )
 
-func SecurityHeaders(serverSettings *types.Settings) func(http.Handler) http.Handler {
+func SecurityHeaders(serverSettings *core.Settings) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			w.Header().Set("X-Content-Type-Options", "nosniff")

internal/handler/middleware/wrapper.go

@@ -2,7 +2,7 @@ package middleware
 
 import "net/http"
 
-// Chain list of handlers together.
+// Wrapper wraps a list of handlers together.
 func Wrapper(next http.Handler, handlers ...func(http.Handler) http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		lastHandler := next

internal/handler/root_and_404.go

@@ -2,10 +2,8 @@ package handler
 
 import (
 	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
+	"spend-sparrow/internal/core"
 	"spend-sparrow/internal/template"
-	"spend-sparrow/internal/utils"
 
 	"github.com/a-h/templ"
 )
@@ -15,11 +13,11 @@ type Index interface {
 }
 
 type IndexImpl struct {
-	r *Render
-	c service.Clock
+	r *core.Render
+	c core.Clock
 }
 
-func NewIndex(r *Render, c service.Clock) Index {
+func NewIndex(r *core.Render, c core.Clock) Index {
 	return IndexImpl{
 		r: r,
 		c: c,
@@ -33,11 +31,11 @@ func (handler IndexImpl) Handle(router *http.ServeMux) {
 
 func (handler IndexImpl) handleRootAnd404() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 
-		htmx := utils.IsHtmx(r)
+		htmx := core.IsHtmx(r)
 
 		var comp templ.Component
 
@@ -47,7 +45,7 @@ func (handler IndexImpl) handleRootAnd404() http.HandlerFunc {
 			status = http.StatusNotFound
 		} else {
 			if user != nil {
-				utils.DoRedirect(w, r, "/dashboard")
+				core.DoRedirect(w, r, "/dashboard")
 				return
 			} else {
 				comp = template.Index()
@@ -65,7 +63,7 @@ func (handler IndexImpl) handleRootAnd404() http.HandlerFunc {
 
 func (handler IndexImpl) handleEmpty() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
 		// Return nothing
 	}

internal/otel.go

@@ -16,11 +16,6 @@ import (
 	"go.opentelemetry.io/otel/sdk/metric"
 	"go.opentelemetry.io/otel/sdk/resource"
 	"go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
-)
-
-var (
-	otelEndpoint = "otel-collector:4317"
 )
 
 // setupOTelSDK bootstraps the OpenTelemetry pipeline.
@@ -50,10 +45,7 @@ func setupOTelSDK(ctx context.Context) (func(context.Context) error, error) {
 	prop := newPropagator()
 	otel.SetTextMapPropagator(prop)
 
-	resources, err := resource.New(
-		ctx,
-		resource.WithAttributes(semconv.ServiceName("spend-sparrow")),
-	)
+	resources, err := resource.New(ctx)
 	if err != nil {
 		slog.ErrorContext(ctx, "failed to create resource", "error", err)
 	}
@@ -96,11 +88,7 @@ func newPropagator() propagation.TextMapPropagator {
 }
 
 func newTracerProvider(ctx context.Context, resource *resource.Resource) (*trace.TracerProvider, error) {
-	exp, err := otlptracegrpc.New(
-		ctx,
-		otlptracegrpc.WithEndpoint(otelEndpoint),
-		otlptracegrpc.WithInsecure(),
-	)
+	exp, err := otlptracegrpc.New(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -112,10 +100,7 @@ func newTracerProvider(ctx context.Context, resource *resource.Resource) (*trace
 }
 
 func newMeterProvider(ctx context.Context, resource *resource.Resource) (*metric.MeterProvider, error) {
-	exp, err := otlpmetricgrpc.New(
-		ctx,
-		otlpmetricgrpc.WithInsecure(),
-		otlpmetricgrpc.WithEndpoint(otelEndpoint))
+	exp, err := otlpmetricgrpc.New(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -127,10 +112,7 @@ func newMeterProvider(ctx context.Context, resource *resource.Resource) (*metric
 }
 
 func newLoggerProvider(ctx context.Context, resource *resource.Resource) (*log.LoggerProvider, error) {
-	logExporter, err := otlploggrpc.New(
-		ctx,
-		otlploggrpc.WithInsecure(),
-		otlploggrpc.WithEndpoint(otelEndpoint))
+	logExporter, err := otlploggrpc.New(ctx)
 	if err != nil {
 		return nil, err
 	}

internal/service/error.go

@@ -1,8 +0,0 @@
-package service
-
-import "errors"
-
-var (
-	ErrBadRequest   = errors.New("bad request")
-	ErrUnauthorized = errors.New("unauthorized")
-)

internal/tag/db.go

@@ -0,0 +1,111 @@
+package tag
+
+import (
+	"context"
+	"log/slog"
+	"spend-sparrow/internal/core"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+)
+
+type Db interface {
+	insert(ctx context.Context, tag Tag) (*Tag, error)
+	update(ctx context.Context, tag Tag) (*Tag, error)
+	delete(ctx context.Context, userId uuid.UUID, id uuid.UUID) error
+	get(ctx context.Context, userId uuid.UUID, id uuid.UUID) (*Tag, error)
+	getAll(ctx context.Context, userId uuid.UUID) ([]Tag, error)
+	find(ctx context.Context, userId uuid.UUID, search string) ([]Tag, error)
+}
+
+type DbSqlite struct {
+	db *sqlx.DB
+}
+
+func NewDbSqlite(db *sqlx.DB) *DbSqlite {
+	return &DbSqlite{db: db}
+}
+
+func (db DbSqlite) insert(ctx context.Context, tag Tag) (*Tag, error) {
+	r, err := db.db.ExecContext(ctx, `
+		INSERT INTO tag (id, user_id, name, created_at, created_by, updated_at, updated_by) 
+		VALUES (?, ?, ?, ?, ?, ?, ?)`,
+		tag.Id, tag.UserId, tag.Name, tag.CreatedAt, tag.CreatedBy, tag.UpdatedAt, tag.UpdatedBy,
+	)
+	err = core.TransformAndLogDbError(ctx, "tag", r, err)
+	if err != nil {
+		return nil, core.ErrInternal
+	}
+
+	return db.get(ctx, tag.UserId, tag.Id)
+}
+
+func (db DbSqlite) update(ctx context.Context, tag Tag) (*Tag, error) {
+	_, err := db.db.ExecContext(ctx, `
+		UPDATE tag 
+		SET name = ?, 
+			updated_at = ?,
+			updated_by = ?
+		WHERE user_id = ?
+		  AND id = ?`,
+		tag.Name, tag.UpdatedAt, tag.UpdatedBy, tag.UserId, tag.Id)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "SQL error UpdateUser", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return db.get(ctx, tag.UserId, tag.Id)
+}
+
+func (db DbSqlite) delete(ctx context.Context, userId uuid.UUID, id uuid.UUID) error {
+	r, err := db.db.ExecContext(
+		ctx,
+		"DELETE FROM tag WHERE user_id = ? AND id = ?",
+		userId,
+		id)
+	err = core.TransformAndLogDbError(ctx, "tag", r, err)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (db DbSqlite) get(ctx context.Context, userId uuid.UUID, id uuid.UUID) (*Tag, error) {
+	var tag Tag
+	err := db.db.GetContext(ctx, &tag, "SELECT * FROM tag WHERE id = ? AND user_id = ?", id, userId)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "Could not get tag", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return &tag, nil
+}
+
+func (db DbSqlite) getAll(ctx context.Context, userId uuid.UUID) ([]Tag, error) {
+	var tags []Tag
+	err := db.db.SelectContext(ctx, &tags, "SELECT * FROM tag WHERE user_id = ?", userId)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "Could not GetAll tag", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return tags, nil
+}
+
+func (db DbSqlite) find(ctx context.Context, userId uuid.UUID, search string) ([]Tag, error) {
+	var tags []Tag
+	err := db.db.SelectContext(ctx, &tags, "SELECT * FROM tag WHERE user_id = ? AND name LIKE ?", userId, "%"+search+"%")
+
+	slog.InfoContext(ctx, "find", "len", len(tags), "search", search)
+
+	if err != nil {
+		slog.ErrorContext(ctx, "Could not find tag", "err", err)
+		return nil, core.ErrInternal
+	}
+
+	return tags, nil
+}

internal/tag/handler.go

@@ -0,0 +1,200 @@
+package tag
+
+import (
+	"fmt"
+	"net/http"
+	"spend-sparrow/internal/core"
+
+	"github.com/google/uuid"
+)
+
+const (
+	DECIMALS_MULTIPLIER = 100
+)
+
+type Handler interface {
+	Handle(router *http.ServeMux)
+}
+
+type HandlerImpl struct {
+	s Service
+	r *core.Render
+}
+
+func NewHandler(s Service, r *core.Render) Handler {
+	return HandlerImpl{
+		s: s,
+		r: r,
+	}
+}
+
+func (h HandlerImpl) Handle(r *http.ServeMux) {
+	r.Handle("GET /tag", h.handlePage())
+	r.Handle("POST /tag/search", h.handleInlineEditSearch())
+	r.Handle("GET /tag/new", h.handleNew())
+	r.Handle("GET /tag/{id}", h.handleEdit())
+	r.Handle("POST /tag/{id}", h.handlePost())
+	r.Handle("DELETE /tag/{id}", h.handleDelete())
+}
+
+func (h HandlerImpl) handlePage() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		tags, err := h.s.getAll(r.Context(), user)
+		if err != nil {
+			h.r.RenderLayout(r, w, core.ErrorComp(err), user)
+			return
+		}
+
+		comp := page(tags)
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+func (h HandlerImpl) handleInlineEditSearch() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		search := r.FormValue("search")
+		tags, err := h.s.find(r.Context(), user, search)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not find tags: %w", core.ErrInternal))
+		}
+
+		comp := inlineEditSearch(tags)
+		h.r.Render(r, w, comp)
+	}
+}
+
+func (h HandlerImpl) handleNew() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		comp := editNew()
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h HandlerImpl) handleEdit() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		id, err := uuid.Parse(r.PathValue("id"))
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		tag, err := h.s.get(r.Context(), user, id)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		comp := edit(*tag)
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h HandlerImpl) handlePost() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		var (
+			id  uuid.UUID
+			err error
+		)
+
+		idStr := r.PathValue("id")
+		if idStr != "new" {
+			id, err = uuid.Parse(idStr)
+			if err != nil {
+				core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+				return
+			}
+		}
+
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse value: %w", core.ErrBadRequest))
+			return
+		}
+
+		input := Tag{
+			Id:   id,
+			Name: r.FormValue("name"),
+		}
+
+		if idStr == "new" {
+			_, err = h.s.add(r.Context(), user, input)
+			if err != nil {
+				core.HandleError(w, r, err)
+				return
+			}
+		} else {
+			_, err = h.s.update(r.Context(), user, input)
+			if err != nil {
+				core.HandleError(w, r, err)
+				return
+			}
+		}
+
+		core.DoRedirect(w, r, "/tag")
+	}
+}
+
+func (h HandlerImpl) handleDelete() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		core.UpdateSpan(r)
+
+		user := core.GetUser(r)
+		if user == nil {
+			core.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		idStr := r.PathValue("id")
+		id, err := uuid.Parse(idStr)
+		if err != nil {
+			core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
+			return
+		}
+
+		err = h.s.delete(r.Context(), user, id)
+		if err != nil {
+			core.HandleError(w, r, err)
+			return
+		}
+
+		core.DoRedirect(w, r, "/tag")
+	}
+}

internal/tag/service.go

@@ -0,0 +1,119 @@
+package tag
+
+import (
+	"context"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+
+	"github.com/google/uuid"
+)
+
+type Service interface {
+	add(ctx context.Context, user *auth_types.User, tag Tag) (*Tag, error)
+	update(ctx context.Context, user *auth_types.User, tag Tag) (*Tag, error)
+	delete(ctx context.Context, user *auth_types.User, tagId uuid.UUID) error
+	get(ctx context.Context, user *auth_types.User, tagId uuid.UUID) (*Tag, error)
+	getAll(ctx context.Context, user *auth_types.User) ([]Tag, error)
+	find(ctx context.Context, user *auth_types.User, search string) ([]Tag, error)
+}
+
+type ServiceImpl struct {
+	db     Db
+	clock  core.Clock
+	random core.Random
+}
+
+func NewService(db Db, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
+		db:     db,
+		clock:  clock,
+		random: random,
+	}
+}
+
+func (s ServiceImpl) add(ctx context.Context, user *auth_types.User, tag Tag) (*Tag, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	isValid := s.isTagValid(tag)
+	if !isValid {
+		return nil, core.ErrBadRequest
+	}
+
+	newId, err := s.random.UUID(ctx)
+	if err != nil {
+		return nil, core.ErrInternal
+	}
+
+	tag.Id = newId
+	tag.UserId = user.Id
+	tag.CreatedBy = user.Id
+	tag.CreatedAt = s.clock.Now()
+
+	return s.db.insert(ctx, tag)
+}
+
+func (s ServiceImpl) update(ctx context.Context, user *auth_types.User, input Tag) (*Tag, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	tag, err := s.get(ctx, user, input.Id)
+	if err != nil {
+		return nil, err
+	}
+
+	tag.Name = input.Name
+
+	if user.Id != tag.UserId {
+		return nil, core.ErrBadRequest
+	}
+
+	isValid := s.isTagValid(*tag)
+	if !isValid {
+		return nil, core.ErrBadRequest
+	}
+
+	tag.UpdatedBy = &user.Id
+	now := s.clock.Now()
+	tag.UpdatedAt = &now
+
+	return s.db.update(ctx, *tag)
+}
+
+func (s ServiceImpl) delete(ctx context.Context, user *auth_types.User, tagId uuid.UUID) error {
+	if user == nil {
+		return core.ErrUnauthorized
+	}
+
+	return s.db.delete(ctx, user.Id, tagId)
+}
+
+func (s ServiceImpl) get(ctx context.Context, user *auth_types.User, tagId uuid.UUID) (*Tag, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	return s.db.get(ctx, user.Id, tagId)
+}
+
+func (s ServiceImpl) getAll(ctx context.Context, user *auth_types.User) ([]Tag, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	return s.db.getAll(ctx, user.Id)
+}
+
+func (s ServiceImpl) find(ctx context.Context, user *auth_types.User, search string) ([]Tag, error) {
+	if user == nil {
+		return nil, core.ErrUnauthorized
+	}
+
+	return s.db.find(ctx, user.Id, search)
+}
+func (s ServiceImpl) isTagValid(tag Tag) bool {
+	err := core.ValidateString(tag.Name, "name")
+	return err == nil
+}

internal/tag/template.templ

@@ -0,0 +1,159 @@
+package tag
+
+import (
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/template/svg"
+)
+
+templ InlineEditInput(classes string) {
+	<div class={ "flex flex-wrap gap-2 input max-w-full " + classes }>
+		<span class="flex items-center gap-1 p-1 bg-green-100 rounded-sm">
+			Lebensmittel 
+			<button class="hover:bg-red-900 rounded p-1 w-5 transition-all">
+				@svg.Cancel()
+			</button>
+		</span>
+		<span class="flex items-center gap-1 p-1 bg-yellow-100 rounded-sm">
+			Sparen
+			<button class="hover:bg-red-900 rounded p-1 w-5 transition-all">
+				@svg.Cancel()
+			</button>
+		</span>
+		<span class="flex items-center gap-1 p-1 bg-red-100 rounded-sm">
+			Tanken
+			<button class="hover:bg-red-900 rounded p-1 w-5 transition-all">
+				@svg.Cancel()
+			</button>
+		</span>
+		<div>
+			<input
+				class="inline"
+				name="search"
+				placeholder="Begin Typing To Search ..."
+				hx-post="/tag/search"
+				hx-trigger="input changed delay:250ms, keyup[key=='Enter'], load"
+				hx-target="#tag-search-results"
+			/>
+			<div id="tag-search-results" class="absolute bg-white border-gray-200 border-1 rounded-lg p-4"></div>
+		</div>
+	</div>
+}
+
+templ inlineEditSearch(tags []Tag) {
+	for _,tag:=range(tags) {
+		<p x-data={ tag.Id.String() }>{ tag.Name }</p>
+	}
+}
+
+templ page(tags []Tag) {
+	@core.Breadcrumb([]string{"Home", "Tag"}, []string{"/", "/tag"})
+	<div class="flex flex-wrap gap-20 text-xl mt-10 justify-center">
+		@newItem()
+		for _,tag:=range(tags ) {
+			@item(tag)
+		}
+	</div>
+}
+
+templ editNew() {
+	<div class="flex flex-col h-full">
+		@core.Breadcrumb([]string{"Home", "Tag", "New"}, []string{"/", "/tag", "/tag/new"})
+		<div class="flex justify-center items-center flex-1">
+			<form
+				hx-post={ "/tag/new" }
+				class="grid grid-cols-4 items-center gap-4 max-w-2xl"
+			>
+				<label for="timestamp" class="text-sm text-gray-500">Name</label>
+				<input
+					autofocus
+					name="name"
+					type="text"
+					class="bg-white input datetime col-span-3"
+				/>
+				<div class="flex gap-6 justify-end col-span-4">
+					<a href="/tag" class="col-start-3 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						<span class="h-4 w-4">
+							@svg.Cancel()
+						</span>
+						<span>
+							Cancel
+						</span>
+					</a>
+					<button type="submit" class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						@svg.Save()
+						<span>
+							Save
+						</span>
+					</button>
+				</div>
+			</form>
+		</div>
+	</div>
+}
+
+templ edit(tag Tag) {
+	<div class="flex flex-col h-full">
+		@core.Breadcrumb([]string{"Home", "Tag", tag.Name}, []string{"/", "/tag", "/tag/" + tag.Id.String()})
+		<div class="flex justify-center items-center flex-1">
+			<form
+				hx-post={ "/tag/" + tag.Id.String() }
+				class="grid grid-cols-4 items-center gap-4 max-w-2xl"
+			>
+				<label for="timestamp" class="text-sm text-gray-500">Name</label>
+				<input
+					autofocus
+					name="name"
+					type="text"
+					value={ tag.Name }
+					class="bg-white input datetime col-span-3"
+				/>
+				<div class="flex flex-row-reverse gap-6 justify-end col-span-4">
+					<button type="submit" class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						@svg.Save()
+						<span>
+							Save
+						</span>
+					</button>
+					<a href="/tag" class="col-start-3 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-gray-200 rounded-lg hover:underline flex items-center gap-2 justify-center">
+						<span class="h-4 w-4">
+							@svg.Cancel()
+						</span>
+						<span>
+							Cancel
+						</span>
+					</a>
+					<button
+						hx-delete={ "/tag/" + tag.Id.String() }
+						hx-confirm={ "Do you really want to delete '" + tag.Name + "'" }
+						class="col-start-4 p-2 px-4 decoration-yellow-400 decoration-[0.25rem] hover:bg-red-50 rounded-lg hover:underline flex items-center gap-2 justify-center"
+					>
+						@svg.Delete()
+						<span>
+							Delete
+						</span>
+					</button>
+				</div>
+			</form>
+		</div>
+	</div>
+}
+
+templ newItem() {
+	<a
+		href="/tag/new"
+		class="p-5 w-64 h-64 flex gap-10 active:bg-gray-200 flex-col justify-center items-center hover:bg-gray-100 transition-all cursor-pointer rounded-lg bg-gray-50 border-1 border-gray-300"
+	>
+		New Tag
+		<div class="w-10">
+			@svg.Plus()
+		</div>
+	</a>
+}
+
+templ item(tag Tag) {
+	<a href={ "/tag/" + tag.Id.String() } class="p-5 w-64 h-64 flex gap-10 active:bg-gray-200 flex-col justify-center items-center hover:bg-gray-100 transition-all cursor-pointer rounded-lg bg-gray-50 border-1 border-gray-300">
+		<span>
+			{ tag.Name }
+		</span>
+	</a>
+}

internal/tag/types.go

@@ -0,0 +1,19 @@
+package tag
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Tag struct {
+	Id     uuid.UUID `db:"id"`
+	UserId uuid.UUID `db:"user_id"`
+
+	Name string `db:"name"`
+
+	CreatedAt time.Time  `db:"created_at"`
+	CreatedBy uuid.UUID  `db:"created_by"`
+	UpdatedAt *time.Time `db:"updated_at"`
+	UpdatedBy *uuid.UUID `db:"updated_by"`
+}

internal/template/account/default.go

@@ -1 +0,0 @@
-package account

internal/template/auth/default.go

@@ -1 +0,0 @@
-package auth

internal/template/dashboard/default.go

@@ -1,2 +0,0 @@
-package dashboard
-

internal/template/svg/default.templ

@@ -19,7 +19,7 @@ templ Eye() {
 }
 
 templ Plus() {
-	<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 304 384" class="h-4 w-4 text-gray-500">
+	<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 304 384" class="text-gray-500">
 		<path fill="currentColor" d="M299 213H171v128h-43V213H0v-42h128V43h43v128h128v42z"></path>
 	</svg>
 }

internal/template/transaction/default.go

@@ -1 +0,0 @@
-package transaction

internal/template/transaction_recurring/default.go

@@ -1 +0,0 @@
-package transaction_recurring

internal/template/treasurechest/default.go

@@ -1 +0,0 @@
-package treasurechest

internal/transaction/handler.go

@@ -1,14 +1,13 @@
-package handler
+package transaction
 
 import (
 	"fmt"
 	"math"
 	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	t "spend-sparrow/internal/template/transaction"
-	"spend-sparrow/internal/types"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/account"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/treasure_chest"
+	"spend-sparrow/internal/treasure_chest_types"
 	"strconv"
 	"time"
 
@@ -16,19 +15,23 @@ import (
 	"github.com/google/uuid"
 )
 
-type Transaction interface {
+const (
+	DECIMALS_MULTIPLIER = 100
+)
+
+type Handler interface {
 	Handle(router *http.ServeMux)
 }
 
-type TransactionImpl struct {
-	s             service.Transaction
-	account       service.Account
-	treasureChest service.TreasureChest
-	r             *Render
+type HandlerImpl struct {
+	s             Service
+	account       account.Service
+	treasureChest treasure_chest.Service
+	r             *core.Render
 }
 
-func NewTransaction(s service.Transaction, account service.Account, treasureChest service.TreasureChest, r *Render) Transaction {
-	return TransactionImpl{
+func NewHandler(s Service, account account.Service, treasureChest treasure_chest.Service, r *core.Render) Handler {
+	return HandlerImpl{
 		s:             s,
 		account:       account,
 		treasureChest: treasureChest,
@@ -36,7 +39,7 @@ func NewTransaction(s service.Transaction, account service.Account, treasureChes
 	}
 }
 
-func (h TransactionImpl) Handle(r *http.ServeMux) {
+func (h HandlerImpl) Handle(r *http.ServeMux) {
 	r.Handle("GET /transaction", h.handleTransactionPage())
 	r.Handle("GET /transaction/{id}", h.handleTransactionItemComp())
 	r.Handle("POST /transaction/{id}", h.handleUpdateTransaction())
@@ -44,17 +47,17 @@ func (h TransactionImpl) Handle(r *http.ServeMux) {
 	r.Handle("DELETE /transaction/{id}", h.handleDeleteTransaction())
 }
 
-func (h TransactionImpl) handleTransactionPage() http.HandlerFunc {
+func (h HandlerImpl) handleTransactionPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
-		filter := types.TransactionItemsFilter{
+		filter := TransactionItemsFilter{
 			AccountId:       r.URL.Query().Get("account-id"),
 			TreasureChestId: r.URL.Query().Get("treasure-chest-id"),
 			Error:           r.URL.Query().Get("error"),
@@ -63,87 +66,87 @@ func (h TransactionImpl) handleTransactionPage() http.HandlerFunc {
 
 		transactions, err := h.s.GetAll(r.Context(), user, filter)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		accounts, err := h.account.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		treasureChests, err := h.treasureChest.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		accountMap, treasureChestMap := h.getTransactionData(accounts, treasureChests)
 
-		items := t.TransactionItems(transactions, accountMap, treasureChestMap)
-		if utils.IsHtmx(r) {
+		items := TransactionItems(transactions, accountMap, treasureChestMap)
+		if core.IsHtmx(r) {
 			h.r.Render(r, w, items)
 		} else {
-			comp := t.Transaction(items, filter, accounts, treasureChests)
+			comp := TransactionComp(items, filter, accounts, treasureChests)
 			h.r.RenderLayout(r, w, comp, user)
 		}
 	}
 }
 
-func (h TransactionImpl) handleTransactionItemComp() http.HandlerFunc {
+func (h HandlerImpl) handleTransactionItemComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		accounts, err := h.account.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		treasureChests, err := h.treasureChest.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		id := r.PathValue("id")
 		if id == "new" {
-			comp := t.EditTransaction(nil, accounts, treasureChests)
+			comp := EditTransaction(nil, accounts, treasureChests)
 			h.r.Render(r, w, comp)
 			return
 		}
 
 		transaction, err := h.s.Get(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		var comp templ.Component
 		if r.URL.Query().Get("edit") == "true" {
-			comp = t.EditTransaction(transaction, accounts, treasureChests)
+			comp = EditTransaction(transaction, accounts, treasureChests)
 		} else {
 			accountMap, treasureChestMap := h.getTransactionData(accounts, treasureChests)
-			comp = t.TransactionItem(transaction, accountMap, treasureChestMap)
+			comp = TransactionItem(transaction, accountMap, treasureChestMap)
 		}
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
+func (h HandlerImpl) handleUpdateTransaction() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -156,7 +159,7 @@ func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
 		if idStr != "new" {
 			id, err = uuid.Parse(idStr)
 			if err != nil {
-				handleError(w, r, fmt.Errorf("could not parse Id: %w", service.ErrBadRequest))
+				core.HandleError(w, r, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest))
 				return
 			}
 		}
@@ -166,7 +169,7 @@ func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
 		if accountIdStr != "" {
 			i, err := uuid.Parse(accountIdStr)
 			if err != nil {
-				handleError(w, r, fmt.Errorf("could not parse account id: %w", service.ErrBadRequest))
+				core.HandleError(w, r, fmt.Errorf("could not parse account id: %w", core.ErrBadRequest))
 				return
 			}
 			accountId = &i
@@ -177,7 +180,7 @@ func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
 		if treasureChestIdStr != "" {
 			i, err := uuid.Parse(treasureChestIdStr)
 			if err != nil {
-				handleError(w, r, fmt.Errorf("could not parse treasure chest id: %w", service.ErrBadRequest))
+				core.HandleError(w, r, fmt.Errorf("could not parse treasure chest id: %w", core.ErrBadRequest))
 				return
 			}
 			treasureChestId = &i
@@ -185,18 +188,18 @@ func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
 
 		valueF, err := strconv.ParseFloat(r.FormValue("value"), 64)
 		if err != nil {
-			handleError(w, r, fmt.Errorf("could not parse value: %w", service.ErrBadRequest))
+			core.HandleError(w, r, fmt.Errorf("could not parse value: %w", core.ErrBadRequest))
 			return
 		}
-		value := int64(math.Round(valueF * service.DECIMALS_MULTIPLIER))
+		value := int64(math.Round(valueF * DECIMALS_MULTIPLIER))
 
 		timestamp, err := time.Parse("2006-01-02", r.FormValue("timestamp"))
 		if err != nil {
-			handleError(w, r, fmt.Errorf("could not parse timestamp: %w", service.ErrBadRequest))
+			core.HandleError(w, r, fmt.Errorf("could not parse timestamp: %w", core.ErrBadRequest))
 			return
 		}
 
-		input := types.Transaction{
+		input := Transaction{
 			Id:              id,
 			AccountId:       accountId,
 			TreasureChestId: treasureChestId,
@@ -206,66 +209,66 @@ func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
 			Description:     r.FormValue("description"),
 		}
 
-		var transaction *types.Transaction
+		var transaction *Transaction
 		if idStr == "new" {
 			transaction, err = h.s.Add(r.Context(), nil, user, input)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		} else {
 			transaction, err = h.s.Update(r.Context(), user, input)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		}
 
 		accounts, err := h.account.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		treasureChests, err := h.treasureChest.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		accountMap, treasureChestMap := h.getTransactionData(accounts, treasureChests)
-		comp := t.TransactionItem(transaction, accountMap, treasureChestMap)
+		comp := TransactionItem(transaction, accountMap, treasureChestMap)
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h TransactionImpl) handleRecalculate() http.HandlerFunc {
+func (h HandlerImpl) handleRecalculate() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		err := h.s.RecalculateBalances(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
-		utils.TriggerToastWithStatus(r.Context(), w, r, "success", "Balances recalculated, please refresh", http.StatusOK)
+		core.TriggerToastWithStatus(r.Context(), w, r, "success", "Balances recalculated, please refresh", http.StatusOK)
 	}
 }
 
-func (h TransactionImpl) handleDeleteTransaction() http.HandlerFunc {
+func (h HandlerImpl) handleDeleteTransaction() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -273,13 +276,13 @@ func (h TransactionImpl) handleDeleteTransaction() http.HandlerFunc {
 
 		err := h.s.Delete(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 	}
 }
 
-func (h TransactionImpl) getTransactionData(accounts []*types.Account, treasureChests []*types.TreasureChest) (map[uuid.UUID]string, map[uuid.UUID]string) {
+func (h HandlerImpl) getTransactionData(accounts []*account.Account, treasureChests []*treasure_chest_types.TreasureChest) (map[uuid.UUID]string, map[uuid.UUID]string) {
 	accountMap := make(map[uuid.UUID]string, 0)
 	for _, account := range accounts {
 		accountMap[account.Id] = account.Name

internal/transaction/service.go

@@ -1,12 +1,14 @@
-package service
+package transaction
 
 import (
 	"context"
 	"errors"
 	"fmt"
 	"log/slog"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/transaction_recurring"
+	"spend-sparrow/internal/treasure_chest_types"
 	"strconv"
 	"time"
 
@@ -16,33 +18,34 @@ import (
 
 const page_size = 25
 
-type Transaction interface {
-	Add(ctx context.Context, tx *sqlx.Tx, user *types.User, transaction types.Transaction) (*types.Transaction, error)
-	Update(ctx context.Context, user *types.User, transaction types.Transaction) (*types.Transaction, error)
-	Get(ctx context.Context, user *types.User, id string) (*types.Transaction, error)
-	GetAll(ctx context.Context, user *types.User, filter types.TransactionItemsFilter) ([]*types.Transaction, error)
-	Delete(ctx context.Context, user *types.User, id string) error
+type Service interface {
+	Add(ctx context.Context, tx *sqlx.Tx, user *auth_types.User, transaction Transaction) (*Transaction, error)
+	Update(ctx context.Context, user *auth_types.User, transaction Transaction) (*Transaction, error)
+	Get(ctx context.Context, user *auth_types.User, id string) (*Transaction, error)
+	GetAll(ctx context.Context, user *auth_types.User, filter TransactionItemsFilter) ([]*Transaction, error)
+	Delete(ctx context.Context, user *auth_types.User, id string) error
 
-	RecalculateBalances(ctx context.Context, user *types.User) error
+	RecalculateBalances(ctx context.Context, user *auth_types.User) error
+	GenerateRecurringTransactions(ctx context.Context) error
 }
 
-type TransactionImpl struct {
+type ServiceImpl struct {
 	db     *sqlx.DB
-	clock  Clock
-	random Random
+	clock  core.Clock
+	random core.Random
 }
 
-func NewTransaction(db *sqlx.DB, random Random, clock Clock) Transaction {
-	return TransactionImpl{
+func NewService(db *sqlx.DB, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
 		db:     db,
 		clock:  clock,
 		random: random,
 	}
 }
 
-func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User, transactionInput types.Transaction) (*types.Transaction, error) {
+func (s ServiceImpl) Add(ctx context.Context, tx *sqlx.Tx, user *auth_types.User, transactionInput Transaction) (*Transaction, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	var err error
@@ -50,7 +53,7 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 	if tx == nil {
 		ownsTransaction = true
 		tx, err = s.db.BeginTxx(ctx, nil)
-		err = db.TransformAndLogDbError(ctx, "transaction Add", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Add", nil, err)
 		if err != nil {
 			return nil, err
 		}
@@ -69,7 +72,7 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 			party, description, error, created_at, created_by)
 		VALUES (:id, :user_id, :account_id, :treasure_chest_id, :value, :timestamp, 
 			:party, :description, :error, :created_at, :created_by)`, transaction)
-	err = db.TransformAndLogDbError(ctx, "transaction Insert", r, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Insert", r, err)
 	if err != nil {
 		return nil, err
 	}
@@ -79,7 +82,7 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 			UPDATE account
 			SET current_balance = current_balance + ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.AccountId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Add", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Add", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -90,7 +93,7 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 			UPDATE treasure_chest
 			SET current_balance = current_balance + ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.TreasureChestId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Add", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Add", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -98,7 +101,7 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 
 	if ownsTransaction {
 		err = tx.Commit()
-		err = db.TransformAndLogDbError(ctx, "transaction Add", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Add", nil, err)
 		if err != nil {
 			return nil, err
 		}
@@ -107,13 +110,13 @@ func (s TransactionImpl) Add(ctx context.Context, tx *sqlx.Tx, user *types.User,
 	return transaction, nil
 }
 
-func (s TransactionImpl) Update(ctx context.Context, user *types.User, input types.Transaction) (*types.Transaction, error) {
+func (s ServiceImpl) Update(ctx context.Context, user *auth_types.User, input Transaction) (*Transaction, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transaction Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -121,14 +124,14 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 		_ = tx.Rollback()
 	}()
 
-	transaction := &types.Transaction{}
+	transaction := &Transaction{}
 	err = tx.GetContext(ctx, transaction, `SELECT * FROM "transaction" WHERE user_id = ? AND id = ?`, user.Id, input.Id)
-	err = db.TransformAndLogDbError(ctx, "transaction Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Update", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("transaction %v not found: %w", input.Id, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("transaction %v not found: %w", input.Id, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	if transaction.Error == nil && transaction.AccountId != nil {
@@ -136,7 +139,7 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 			UPDATE account
 			SET current_balance = current_balance - ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.AccountId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Update", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Update", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -146,7 +149,7 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 			UPDATE treasure_chest
 			SET current_balance = current_balance - ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.TreasureChestId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Update", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Update", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -162,7 +165,7 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 			UPDATE account
 			SET current_balance = current_balance + ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.AccountId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Update", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Update", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -172,7 +175,7 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 			UPDATE treasure_chest
 			SET current_balance = current_balance + ?
 			WHERE id = ? AND user_id = ?`, transaction.Value, transaction.TreasureChestId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Update", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction Update", r, err)
 		if err != nil {
 			return nil, err
 		}
@@ -192,13 +195,13 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 			updated_by = :updated_by
 		WHERE id = :id
 			AND user_id = :user_id`, transaction)
-	err = db.TransformAndLogDbError(ctx, "transaction Update", r, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Update", r, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transaction Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -206,32 +209,32 @@ func (s TransactionImpl) Update(ctx context.Context, user *types.User, input typ
 	return transaction, nil
 }
 
-func (s TransactionImpl) Get(ctx context.Context, user *types.User, id string) (*types.Transaction, error) {
+func (s ServiceImpl) Get(ctx context.Context, user *auth_types.User, id string) (*Transaction, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "transaction get", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
-	var transaction types.Transaction
+	var transaction Transaction
 	err = s.db.GetContext(ctx, &transaction, `SELECT * FROM "transaction" WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "transaction Get", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Get", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("transaction %v not found: %w", id, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("transaction %v not found: %w", id, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return &transaction, nil
 }
 
-func (s TransactionImpl) GetAll(ctx context.Context, user *types.User, filter types.TransactionItemsFilter) ([]*types.Transaction, error) {
+func (s ServiceImpl) GetAll(ctx context.Context, user *auth_types.User, filter TransactionItemsFilter) ([]*Transaction, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	var (
@@ -249,7 +252,7 @@ func (s TransactionImpl) GetAll(ctx context.Context, user *types.User, filter ty
 		}
 	}
 
-	transactions := make([]*types.Transaction, 0)
+	transactions := make([]*Transaction, 0)
 	err = s.db.SelectContext(ctx, &transactions, `
 		SELECT * 
 		FROM "transaction" 
@@ -269,7 +272,7 @@ func (s TransactionImpl) GetAll(ctx context.Context, user *types.User, filter ty
 		filter.Error,
 		page_size,
 		offset)
-	err = db.TransformAndLogDbError(ctx, "transaction GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -277,18 +280,18 @@ func (s TransactionImpl) GetAll(ctx context.Context, user *types.User, filter ty
 	return transactions, nil
 }
 
-func (s TransactionImpl) Delete(ctx context.Context, user *types.User, id string) error {
+func (s ServiceImpl) Delete(ctx context.Context, user *auth_types.User, id string) error {
 	if user == nil {
-		return ErrUnauthorized
+		return core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "transaction delete", "err", err)
-		return fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
 	if err != nil {
 		return nil
 	}
@@ -296,9 +299,9 @@ func (s TransactionImpl) Delete(ctx context.Context, user *types.User, id string
 		_ = tx.Rollback()
 	}()
 
-	var transaction types.Transaction
+	var transaction Transaction
 	err = tx.GetContext(ctx, &transaction, `SELECT * FROM "transaction" WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
 	if err != nil {
 		return err
 	}
@@ -309,8 +312,8 @@ func (s TransactionImpl) Delete(ctx context.Context, user *types.User, id string
 			SET current_balance = current_balance - ?
 			WHERE id = ?
 				AND user_id = ?`, transaction.Value, transaction.AccountId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Delete", r, err)
-		if err != nil && !errors.Is(err, db.ErrNotFound) {
+		err = core.TransformAndLogDbError(ctx, "transaction Delete", r, err)
+		if err != nil && !errors.Is(err, core.ErrNotFound) {
 			return err
 		}
 	}
@@ -321,20 +324,20 @@ func (s TransactionImpl) Delete(ctx context.Context, user *types.User, id string
 			SET current_balance = current_balance - ?
 			WHERE id = ?
 				AND user_id = ?`, transaction.Value, transaction.TreasureChestId, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction Delete", r, err)
-		if err != nil && !errors.Is(err, db.ErrNotFound) {
+		err = core.TransformAndLogDbError(ctx, "transaction Delete", r, err)
+		if err != nil && !errors.Is(err, core.ErrNotFound) {
 			return err
 		}
 	}
 
 	r, err := tx.ExecContext(ctx, "DELETE FROM \"transaction\" WHERE id = ? AND user_id = ?", uuid, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transaction Delete", r, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Delete", r, err)
 	if err != nil {
 		return err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction Delete", nil, err)
 	if err != nil {
 		return err
 	}
@@ -342,13 +345,13 @@ func (s TransactionImpl) Delete(ctx context.Context, user *types.User, id string
 	return nil
 }
 
-func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.User) error {
+func (s ServiceImpl) RecalculateBalances(ctx context.Context, user *auth_types.User) error {
 	if user == nil {
-		return ErrUnauthorized
+		return core.ErrUnauthorized
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
 	if err != nil {
 		return err
 	}
@@ -360,8 +363,8 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 		UPDATE account
 		SET current_balance = 0
 		WHERE user_id = ?`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
-	if err != nil && !errors.Is(err, db.ErrNotFound) {
+	err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
+	if err != nil && !errors.Is(err, core.ErrNotFound) {
 		return err
 	}
 
@@ -369,8 +372,8 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 		UPDATE treasure_chest
 		SET current_balance = 0
 		WHERE user_id = ?`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
-	if err != nil && !errors.Is(err, db.ErrNotFound) {
+	err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
+	if err != nil && !errors.Is(err, core.ErrNotFound) {
 		return err
 	}
 
@@ -378,8 +381,8 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 		SELECT *
 		FROM "transaction" 
 		WHERE user_id = ?`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
-	if err != nil && !errors.Is(err, db.ErrNotFound) {
+	err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
+	if err != nil && !errors.Is(err, core.ErrNotFound) {
 		return err
 	}
 	defer func() {
@@ -389,10 +392,10 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 		}
 	}()
 
-	var transaction types.Transaction
+	var transaction Transaction
 	for rows.Next() {
 		err = rows.StructScan(&transaction)
-		err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
 		if err != nil {
 			return err
 		}
@@ -403,7 +406,7 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 			SET error = ? 
 			WHERE user_id = ? 
 				AND id = ?`, transaction.Error, user.Id, transaction.Id)
-		err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
+		err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
 		if err != nil {
 			return err
 		}
@@ -417,7 +420,7 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 				UPDATE account
 				SET current_balance = current_balance + ?
 				WHERE id = ? AND user_id = ?`, transaction.Value, transaction.AccountId, user.Id)
-			err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
+			err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
 			if err != nil {
 				return err
 			}
@@ -427,7 +430,7 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 				UPDATE treasure_chest
 				SET current_balance = current_balance + ?
 				WHERE id = ? AND user_id = ?`, transaction.Value, transaction.TreasureChestId, user.Id)
-			err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
+			err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", r, err)
 			if err != nil {
 				return err
 			}
@@ -435,7 +438,7 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transaction RecalculateBalances", nil, err)
 	if err != nil {
 		return err
 	}
@@ -443,7 +446,63 @@ func (s TransactionImpl) RecalculateBalances(ctx context.Context, user *types.Us
 	return nil
 }
 
-func (s TransactionImpl) validateAndEnrichTransaction(ctx context.Context, tx *sqlx.Tx, oldTransaction *types.Transaction, userId uuid.UUID, input types.Transaction) (*types.Transaction, error) {
+func (s ServiceImpl) GenerateRecurringTransactions(ctx context.Context) error {
+	now := s.clock.Now()
+
+	tx, err := s.db.BeginTxx(ctx, nil)
+	err = core.TransformAndLogDbError(ctx, "transaction GenerateRecurringTransactions", nil, err)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	recurringTransactions := make([]*transaction_recurring.TransactionRecurring, 0)
+	err = tx.SelectContext(ctx, &recurringTransactions, `
+		SELECT * FROM transaction_recurring WHERE next_execution <= ?`,
+		now)
+	err = core.TransformAndLogDbError(ctx, "transaction GenerateRecurringTransactions", nil, err)
+	if err != nil {
+		return err
+	}
+
+	for _, transactionRecurring := range recurringTransactions {
+		user := &auth_types.User{
+			Id: transactionRecurring.UserId,
+		}
+		transaction := Transaction{
+			Timestamp:   *transactionRecurring.NextExecution,
+			Party:       transactionRecurring.Party,
+			Description: transactionRecurring.Description,
+
+			TreasureChestId: transactionRecurring.TreasureChestId,
+			Value:           transactionRecurring.Value,
+		}
+
+		_, err = s.Add(ctx, tx, user, transaction)
+		if err != nil {
+			return err
+		}
+
+		nextExecution := transactionRecurring.NextExecution.AddDate(0, int(transactionRecurring.IntervalMonths), 0)
+		r, err := tx.ExecContext(ctx, `UPDATE transaction_recurring SET next_execution = ? WHERE id = ? AND user_id = ?`,
+			nextExecution, transactionRecurring.Id, user.Id)
+		err = core.TransformAndLogDbError(ctx, "transaction GenerateRecurringTransactions", r, err)
+		if err != nil {
+			return err
+		}
+	}
+
+	err = tx.Commit()
+	err = core.TransformAndLogDbError(ctx, "transaction GenerateRecurringTransactions", nil, err)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (s ServiceImpl) validateAndEnrichTransaction(ctx context.Context, tx *sqlx.Tx, oldTransaction *Transaction, userId uuid.UUID, input Transaction) (*Transaction, error) {
 	var (
 		id        uuid.UUID
 		createdAt time.Time
@@ -458,7 +517,7 @@ func (s TransactionImpl) validateAndEnrichTransaction(ctx context.Context, tx *s
 	if oldTransaction == nil {
 		id, err = s.random.UUID(ctx)
 		if err != nil {
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 		createdAt = s.clock.Now()
 		createdBy = userId
@@ -473,45 +532,45 @@ func (s TransactionImpl) validateAndEnrichTransaction(ctx context.Context, tx *s
 
 	if input.AccountId != nil {
 		err = tx.GetContext(ctx, &rowCount, `SELECT COUNT(*) FROM account WHERE id = ? AND user_id = ?`, input.AccountId, userId)
-		err = db.TransformAndLogDbError(ctx, "transaction validate", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transaction validate", nil, err)
 		if err != nil {
 			return nil, err
 		}
 		if rowCount == 0 {
 			slog.ErrorContext(ctx, "transaction validate", "err", err)
-			return nil, fmt.Errorf("account not found: %w", ErrBadRequest)
+			return nil, fmt.Errorf("account not found: %w", core.ErrBadRequest)
 		}
 	}
 
 	if input.TreasureChestId != nil {
-		var treasureChest types.TreasureChest
+		var treasureChest treasure_chest_types.TreasureChest
 		err = tx.GetContext(ctx, &treasureChest, `SELECT * FROM treasure_chest WHERE id = ? AND user_id = ?`, input.TreasureChestId, userId)
-		err = db.TransformAndLogDbError(ctx, "transaction validate", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transaction validate", nil, err)
 		if err != nil {
-			if errors.Is(err, db.ErrNotFound) {
-				return nil, fmt.Errorf("treasure chest not found: %w", ErrBadRequest)
+			if errors.Is(err, core.ErrNotFound) {
+				return nil, fmt.Errorf("treasure chest not found: %w", core.ErrBadRequest)
 			}
 			return nil, err
 		}
 		if treasureChest.ParentId == nil {
-			return nil, fmt.Errorf("treasure chest is a group: %w", ErrBadRequest)
+			return nil, fmt.Errorf("treasure chest is a group: %w", core.ErrBadRequest)
 		}
 	}
 
 	if input.Party != "" {
-		err = validateString(input.Party, "party")
+		err = core.ValidateString(input.Party, "party")
 		if err != nil {
 			return nil, err
 		}
 	}
 	if input.Description != "" {
-		err = validateString(input.Description, "description")
+		err = core.ValidateString(input.Description, "description")
 		if err != nil {
 			return nil, err
 		}
 	}
 
-	transaction := types.Transaction{
+	transaction := Transaction{
 		Id:     id,
 		UserId: userId,
 
@@ -534,7 +593,7 @@ func (s TransactionImpl) validateAndEnrichTransaction(ctx context.Context, tx *s
 	return &transaction, nil
 }
 
-func (s TransactionImpl) updateErrors(t *types.Transaction) {
+func (s ServiceImpl) updateErrors(t *Transaction) {
 	errorStr := ""
 
 	switch {

internal/transaction/template.templ

@@ -1,12 +1,16 @@
 package transaction
 
-import "fmt"
-import "time"
-import "spend-sparrow/internal/template/svg"
-import "spend-sparrow/internal/types"
-import "github.com/google/uuid"
+import (
+	"fmt"
+	"github.com/google/uuid"
+	"spend-sparrow/internal/account"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/template/svg"
+	"spend-sparrow/internal/treasure_chest_types"
+	"time"
+)
 
-templ Transaction(items templ.Component, filter types.TransactionItemsFilter, accounts []*types.Account, treasureChests []*types.TreasureChest) {
+templ TransactionComp(items templ.Component, filter TransactionItemsFilter, accounts []*account.Account, treasureChests []*treasure_chest_types.TreasureChest) {
 	<div class="max-w-6xl mt-10 mx-auto">
 		<div class="flex items-center gap-4">
 			<form
@@ -61,7 +65,9 @@ templ Transaction(items templ.Component, filter types.TransactionItemsFilter, ac
 				hx-swap="afterbegin"
 				class="button button-primary ml-auto px-2 flex items-center gap-2 justify-center"
 			>
-				@svg.Plus()
+				<div class="w-3">
+					@svg.Plus()
+				</div>
 				<p>New Transaction</p>
 			</button>
 		</div>
@@ -87,7 +93,7 @@ templ Transaction(items templ.Component, filter types.TransactionItemsFilter, ac
 	</div>
 }
 
-templ TransactionItems(transactions []*types.Transaction, accounts, treasureChests map[uuid.UUID]string) {
+templ TransactionItems(transactions []*Transaction, accounts, treasureChests map[uuid.UUID]string) {
 	<div id="transaction-items" class="my-6">
 		for _, transaction := range transactions {
 			@TransactionItem(transaction, accounts, treasureChests)
@@ -95,7 +101,7 @@ templ TransactionItems(transactions []*types.Transaction, accounts, treasureChes
 	</div>
 }
 
-templ EditTransaction(transaction *types.Transaction, accounts []*types.Account, treasureChests []*types.TreasureChest) {
+templ EditTransaction(transaction *Transaction, accounts []*account.Account, treasureChests []*treasure_chest_types.TreasureChest) {
 	{{
 		var (
 			timestamp time.Time
@@ -219,7 +225,7 @@ templ EditTransaction(transaction *types.Transaction, accounts []*types.Account,
 	</div>
 }
 
-templ TransactionItem(transaction *types.Transaction, accounts, treasureChests map[uuid.UUID]string) {
+templ TransactionItem(transaction *Transaction, accounts, treasureChests map[uuid.UUID]string) {
 	{{
 		background := "bg-gray-50"
 		if transaction.Error != nil {
@@ -272,9 +278,9 @@ templ TransactionItem(transaction *types.Transaction, accounts, treasureChests m
 			</p>
 		</div>
 		if transaction.Value < 0 {
-			<p class="mr-8 min-w-22 text-right text-red-700">{ types.FormatEuros(transaction.Value) }</p>
+			<p class="mr-8 min-w-22 text-right text-red-700">{ core.FormatEuros(transaction.Value) }</p>
 		} else {
-			<p class="mr-8 w-22 text-right text-green-700">{ types.FormatEuros(transaction.Value) }</p>
+			<p class="mr-8 w-22 text-right text-green-700">{ core.FormatEuros(transaction.Value) }</p>
 		}
 		<button
 			hx-get={ "/transaction/" + transaction.Id.String() + "?edit=true" }

internal/transaction/types.go

@@ -1,4 +1,4 @@
-package types
+package transaction
 
 import (
 	"time"
@@ -6,7 +6,7 @@ import (
 	"github.com/google/uuid"
 )
 
-// At the center of the application is the transaction.
+// Transaction is at the center of the application.
 //
 // Every piece of data should be calculated based on transactions.
 // This means potential calculation errors can be fixed later in time.

internal/transaction_recurring/handler.go

@@ -1,43 +1,40 @@
-package handler
+package transaction_recurring
 
 import (
 	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	t "spend-sparrow/internal/template/transaction_recurring"
-	"spend-sparrow/internal/types"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
 )
 
-type TransactionRecurring interface {
+type Handler interface {
 	Handle(router *http.ServeMux)
 }
 
-type TransactionRecurringImpl struct {
-	s service.TransactionRecurring
-	r *Render
+type HandlerImpl struct {
+	s Service
+	r *core.Render
 }
 
-func NewTransactionRecurring(s service.TransactionRecurring, r *Render) TransactionRecurring {
-	return TransactionRecurringImpl{
+func NewHandler(s Service, r *core.Render) Handler {
+	return HandlerImpl{
 		s: s,
 		r: r,
 	}
 }
 
-func (h TransactionRecurringImpl) Handle(r *http.ServeMux) {
+func (h HandlerImpl) Handle(r *http.ServeMux) {
 	r.Handle("GET /transaction-recurring", h.handleTransactionRecurringItemComp())
 	r.Handle("POST /transaction-recurring/{id}", h.handleUpdateTransactionRecurring())
 	r.Handle("DELETE /transaction-recurring/{id}", h.handleDeleteTransactionRecurring())
 }
 
-func (h TransactionRecurringImpl) handleTransactionRecurringItemComp() http.HandlerFunc {
+func (h HandlerImpl) handleTransactionRecurringItemComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -48,17 +45,17 @@ func (h TransactionRecurringImpl) handleTransactionRecurringItemComp() http.Hand
 	}
 }
 
-func (h TransactionRecurringImpl) handleUpdateTransactionRecurring() http.HandlerFunc {
+func (h HandlerImpl) handleUpdateTransactionRecurring() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
-		input := types.TransactionRecurringInput{
+		input := TransactionRecurringInput{
 			Id:              r.PathValue("id"),
 			IntervalMonths:  r.FormValue("interval-months"),
 			NextExecution:   r.FormValue("next-execution"),
@@ -72,13 +69,13 @@ func (h TransactionRecurringImpl) handleUpdateTransactionRecurring() http.Handle
 		if input.Id == "new" {
 			_, err := h.s.Add(r.Context(), user, input)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		} else {
 			_, err := h.s.Update(r.Context(), user, input)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		}
@@ -87,13 +84,13 @@ func (h TransactionRecurringImpl) handleUpdateTransactionRecurring() http.Handle
 	}
 }
 
-func (h TransactionRecurringImpl) handleDeleteTransactionRecurring() http.HandlerFunc {
+func (h HandlerImpl) handleDeleteTransactionRecurring() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -103,7 +100,7 @@ func (h TransactionRecurringImpl) handleDeleteTransactionRecurring() http.Handle
 
 		err := h.s.Delete(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
@@ -111,26 +108,26 @@ func (h TransactionRecurringImpl) handleDeleteTransactionRecurring() http.Handle
 	}
 }
 
-func (h TransactionRecurringImpl) renderItems(w http.ResponseWriter, r *http.Request, user *types.User, id, accountId, treasureChestId string) {
-	var transactionsRecurring []*types.TransactionRecurring
+func (h HandlerImpl) renderItems(w http.ResponseWriter, r *http.Request, user *auth_types.User, id, accountId, treasureChestId string) {
+	var transactionsRecurring []*TransactionRecurring
 	var err error
 	if accountId == "" && treasureChestId == "" {
-		utils.TriggerToastWithStatus(r.Context(), w, r, "error", "Please select an account or treasure chest", http.StatusBadRequest)
+		core.TriggerToastWithStatus(r.Context(), w, r, "error", "Please select an account or treasure chest", http.StatusBadRequest)
 	}
 	if accountId != "" {
 		transactionsRecurring, err = h.s.GetAllByAccount(r.Context(), user, accountId)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 	} else {
 		transactionsRecurring, err = h.s.GetAllByTreasureChest(r.Context(), user, treasureChestId)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 	}
 
-	comp := t.TransactionRecurringItems(transactionsRecurring, id, accountId, treasureChestId)
+	comp := TransactionRecurringItems(transactionsRecurring, id, accountId, treasureChestId)
 	h.r.Render(r, w, comp)
 }

internal/transaction_recurring/service.go

@@ -1,4 +1,4 @@
-package service
+package transaction_recurring
 
 import (
 	"context"
@@ -6,8 +6,9 @@ import (
 	"fmt"
 	"log/slog"
 	"math"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/treasure_chest_types"
 	"strconv"
 	"time"
 
@@ -15,43 +16,43 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-type TransactionRecurring interface {
-	Add(ctx context.Context, user *types.User, transactionRecurring types.TransactionRecurringInput) (*types.TransactionRecurring, error)
-	Update(ctx context.Context, user *types.User, transactionRecurring types.TransactionRecurringInput) (*types.TransactionRecurring, error)
-	GetAll(ctx context.Context, user *types.User) ([]*types.TransactionRecurring, error)
-	GetAllByAccount(ctx context.Context, user *types.User, accountId string) ([]*types.TransactionRecurring, error)
-	GetAllByTreasureChest(ctx context.Context, user *types.User, treasureChestId string) ([]*types.TransactionRecurring, error)
-	Delete(ctx context.Context, user *types.User, id string) error
+const (
+	DECIMALS_MULTIPLIER = 100
+)
 
-	GenerateTransactions(ctx context.Context) error
+type Service interface {
+	Add(ctx context.Context, user *auth_types.User, transactionRecurring TransactionRecurringInput) (*TransactionRecurring, error)
+	Update(ctx context.Context, user *auth_types.User, transactionRecurring TransactionRecurringInput) (*TransactionRecurring, error)
+	GetAll(ctx context.Context, user *auth_types.User) ([]*TransactionRecurring, error)
+	GetAllByAccount(ctx context.Context, user *auth_types.User, accountId string) ([]*TransactionRecurring, error)
+	GetAllByTreasureChest(ctx context.Context, user *auth_types.User, treasureChestId string) ([]*TransactionRecurring, error)
+	Delete(ctx context.Context, user *auth_types.User, id string) error
 }
 
-type TransactionRecurringImpl struct {
-	db          *sqlx.DB
-	clock       Clock
-	random      Random
-	transaction Transaction
+type ServiceImpl struct {
+	db     *sqlx.DB
+	clock  core.Clock
+	random core.Random
 }
 
-func NewTransactionRecurring(db *sqlx.DB, random Random, clock Clock, transaction Transaction) TransactionRecurring {
-	return TransactionRecurringImpl{
-		db:          db,
-		clock:       clock,
-		random:      random,
-		transaction: transaction,
+func NewService(db *sqlx.DB, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
+		db:     db,
+		clock:  clock,
+		random: random,
 	}
 }
 
-func (s TransactionRecurringImpl) Add(ctx context.Context,
-	user *types.User,
-	transactionRecurringInput types.TransactionRecurringInput,
-) (*types.TransactionRecurring, error) {
+func (s ServiceImpl) Add(ctx context.Context,
+	user *auth_types.User,
+	transactionRecurringInput TransactionRecurringInput,
+) (*TransactionRecurring, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Add", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Add", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -70,13 +71,13 @@ func (s TransactionRecurringImpl) Add(ctx context.Context,
 		VALUES (:id, :user_id, :interval_months, 
 			:next_execution, :party, :description, :account_id, :treasure_chest_id, :value, :created_at, :created_by)`,
 		transactionRecurring)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Insert", r, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Insert", r, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Add", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Add", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -84,21 +85,21 @@ func (s TransactionRecurringImpl) Add(ctx context.Context,
 	return transactionRecurring, nil
 }
 
-func (s TransactionRecurringImpl) Update(ctx context.Context,
-	user *types.User,
-	input types.TransactionRecurringInput,
-) (*types.TransactionRecurring, error) {
+func (s ServiceImpl) Update(ctx context.Context,
+	user *auth_types.User,
+	input TransactionRecurringInput,
+) (*TransactionRecurring, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(input.Id)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring update", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -106,14 +107,14 @@ func (s TransactionRecurringImpl) Update(ctx context.Context,
 		_ = tx.Rollback()
 	}()
 
-	transactionRecurring := &types.TransactionRecurring{}
+	transactionRecurring := &TransactionRecurring{}
 	err = tx.GetContext(ctx, transactionRecurring, `SELECT * FROM transaction_recurring WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("transactionRecurring %v not found: %w", input.Id, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("transactionRecurring %v not found: %w", input.Id, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	transactionRecurring, err = s.validateAndEnrichTransactionRecurring(ctx, tx, transactionRecurring, user.Id, input)
@@ -135,13 +136,13 @@ func (s TransactionRecurringImpl) Update(ctx context.Context,
 			updated_by = :updated_by
 		WHERE id = :id
 			AND user_id = :user_id`, transactionRecurring)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Update", r, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Update", r, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -149,19 +150,19 @@ func (s TransactionRecurringImpl) Update(ctx context.Context,
 	return transactionRecurring, nil
 }
 
-func (s TransactionRecurringImpl) GetAll(ctx context.Context, user *types.User) ([]*types.TransactionRecurring, error) {
+func (s ServiceImpl) GetAll(ctx context.Context, user *auth_types.User) ([]*TransactionRecurring, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	transactionRecurrings := make([]*types.TransactionRecurring, 0)
+	transactionRecurrings := make([]*TransactionRecurring, 0)
 	err := s.db.SelectContext(ctx, &transactionRecurrings, `
 		SELECT * 
 		FROM transaction_recurring 
 		WHERE user_id = ? 
 		ORDER BY created_at DESC`,
 		user.Id)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -169,19 +170,19 @@ func (s TransactionRecurringImpl) GetAll(ctx context.Context, user *types.User)
 	return transactionRecurrings, nil
 }
 
-func (s TransactionRecurringImpl) GetAllByAccount(ctx context.Context, user *types.User, accountId string) ([]*types.TransactionRecurring, error) {
+func (s ServiceImpl) GetAllByAccount(ctx context.Context, user *auth_types.User, accountId string) ([]*TransactionRecurring, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	accountUuid, err := uuid.Parse(accountId)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring GetAllByAccount", "err", err)
-		return nil, fmt.Errorf("could not parse accountId: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse accountId: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -191,15 +192,15 @@ func (s TransactionRecurringImpl) GetAllByAccount(ctx context.Context, user *typ
 
 	var rowCount int
 	err = tx.GetContext(ctx, &rowCount, `SELECT COUNT(*) FROM account WHERE id = ? AND user_id = ?`, accountUuid, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("account %v not found: %w", accountId, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("account %v not found: %w", accountId, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
-	transactionRecurrings := make([]*types.TransactionRecurring, 0)
+	transactionRecurrings := make([]*TransactionRecurring, 0)
 	err = tx.SelectContext(ctx, &transactionRecurrings, `
 		SELECT * 
 		FROM transaction_recurring 
@@ -207,13 +208,13 @@ func (s TransactionRecurringImpl) GetAllByAccount(ctx context.Context, user *typ
 			AND account_id = ?
 		ORDER BY created_at DESC`,
 		user.Id, accountUuid)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByAccount", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -221,22 +222,22 @@ func (s TransactionRecurringImpl) GetAllByAccount(ctx context.Context, user *typ
 	return transactionRecurrings, nil
 }
 
-func (s TransactionRecurringImpl) GetAllByTreasureChest(ctx context.Context,
-	user *types.User,
+func (s ServiceImpl) GetAllByTreasureChest(ctx context.Context,
+	user *auth_types.User,
 	treasureChestId string,
-) ([]*types.TransactionRecurring, error) {
+) ([]*TransactionRecurring, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	treasureChestUuid, err := uuid.Parse(treasureChestId)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring GetAllByTreasureChest", "err", err)
-		return nil, fmt.Errorf("could not parse treasureChestId: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse treasureChestId: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -246,15 +247,15 @@ func (s TransactionRecurringImpl) GetAllByTreasureChest(ctx context.Context,
 
 	var rowCount int
 	err = tx.GetContext(ctx, &rowCount, `SELECT COUNT(*) FROM treasure_chest WHERE id = ? AND user_id = ?`, treasureChestId, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
-			return nil, fmt.Errorf("treasurechest %v not found: %w", treasureChestId, ErrBadRequest)
+		if errors.Is(err, core.ErrNotFound) {
+			return nil, fmt.Errorf("treasurechest %v not found: %w", treasureChestId, core.ErrBadRequest)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
-	transactionRecurrings := make([]*types.TransactionRecurring, 0)
+	transactionRecurrings := make([]*TransactionRecurring, 0)
 	err = tx.SelectContext(ctx, &transactionRecurrings, `
 		SELECT * 
 		FROM transaction_recurring 
@@ -262,13 +263,13 @@ func (s TransactionRecurringImpl) GetAllByTreasureChest(ctx context.Context,
 			AND treasure_chest_id = ?
 		ORDER BY created_at DESC`,
 		user.Id, treasureChestUuid)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring GetAllByTreasureChest", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -276,18 +277,18 @@ func (s TransactionRecurringImpl) GetAllByTreasureChest(ctx context.Context,
 	return transactionRecurrings, nil
 }
 
-func (s TransactionRecurringImpl) Delete(ctx context.Context, user *types.User, id string) error {
+func (s ServiceImpl) Delete(ctx context.Context, user *auth_types.User, id string) error {
 	if user == nil {
-		return ErrUnauthorized
+		return core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring delete", "err", err)
-		return fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
 	if err != nil {
 		return nil
 	}
@@ -295,21 +296,21 @@ func (s TransactionRecurringImpl) Delete(ctx context.Context, user *types.User,
 		_ = tx.Rollback()
 	}()
 
-	var transactionRecurring types.TransactionRecurring
+	var transactionRecurring TransactionRecurring
 	err = tx.GetContext(ctx, &transactionRecurring, `SELECT * FROM transaction_recurring WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
 	if err != nil {
 		return err
 	}
 
 	r, err := tx.ExecContext(ctx, "DELETE FROM transaction_recurring WHERE id = ? AND user_id = ?", uuid, user.Id)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Delete", r, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Delete", r, err)
 	if err != nil {
 		return err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "transactionRecurring Delete", nil, err)
 	if err != nil {
 		return err
 	}
@@ -317,69 +318,13 @@ func (s TransactionRecurringImpl) Delete(ctx context.Context, user *types.User,
 	return nil
 }
 
-func (s TransactionRecurringImpl) GenerateTransactions(ctx context.Context) error {
-	now := s.clock.Now()
-
-	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GenerateTransactions", nil, err)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		_ = tx.Rollback()
-	}()
-
-	recurringTransactions := make([]*types.TransactionRecurring, 0)
-	err = tx.SelectContext(ctx, &recurringTransactions, `
-		SELECT * FROM transaction_recurring WHERE next_execution <= ?`,
-		now)
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GenerateTransactions", nil, err)
-	if err != nil {
-		return err
-	}
-
-	for _, transactionRecurring := range recurringTransactions {
-		user := &types.User{
-			Id: transactionRecurring.UserId,
-		}
-		transaction := types.Transaction{
-			Timestamp:   *transactionRecurring.NextExecution,
-			Party:       transactionRecurring.Party,
-			Description: transactionRecurring.Description,
-
-			TreasureChestId: transactionRecurring.TreasureChestId,
-			Value:           transactionRecurring.Value,
-		}
-
-		_, err = s.transaction.Add(ctx, tx, user, transaction)
-		if err != nil {
-			return err
-		}
-
-		nextExecution := transactionRecurring.NextExecution.AddDate(0, int(transactionRecurring.IntervalMonths), 0)
-		r, err := tx.ExecContext(ctx, `UPDATE transaction_recurring SET next_execution = ? WHERE id = ? AND user_id = ?`,
-			nextExecution, transactionRecurring.Id, user.Id)
-		err = db.TransformAndLogDbError(ctx, "transactionRecurring GenerateTransactions", r, err)
-		if err != nil {
-			return err
-		}
-	}
-
-	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "transactionRecurring GenerateTransactions", nil, err)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func (s TransactionRecurringImpl) validateAndEnrichTransactionRecurring(
+func (s ServiceImpl) validateAndEnrichTransactionRecurring(
 	ctx context.Context,
 	tx *sqlx.Tx,
-	oldTransactionRecurring *types.TransactionRecurring,
+	oldTransactionRecurring *TransactionRecurring,
 	userId uuid.UUID,
-	input types.TransactionRecurringInput,
-) (*types.TransactionRecurring, error) {
+	input TransactionRecurringInput,
+) (*TransactionRecurring, error) {
 	var (
 		id                uuid.UUID
 		accountUuid       *uuid.UUID
@@ -397,7 +342,7 @@ func (s TransactionRecurringImpl) validateAndEnrichTransactionRecurring(
 	if oldTransactionRecurring == nil {
 		id, err = s.random.UUID(ctx)
 		if err != nil {
-			return nil, types.ErrInternal
+			return nil, core.ErrInternal
 		}
 		createdAt = s.clock.Now()
 		createdBy = userId
@@ -416,17 +361,17 @@ func (s TransactionRecurringImpl) validateAndEnrichTransactionRecurring(
 		temp, err := uuid.Parse(input.AccountId)
 		if err != nil {
 			slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-			return nil, fmt.Errorf("could not parse accountId: %w", ErrBadRequest)
+			return nil, fmt.Errorf("could not parse accountId: %w", core.ErrBadRequest)
 		}
 		accountUuid = &temp
 		err = tx.GetContext(ctx, &rowCount, `SELECT COUNT(*) FROM account WHERE id = ? AND user_id = ?`, accountUuid, userId)
-		err = db.TransformAndLogDbError(ctx, "transactionRecurring validate", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transactionRecurring validate", nil, err)
 		if err != nil {
 			return nil, err
 		}
 		if rowCount == 0 {
 			slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-			return nil, fmt.Errorf("account not found: %w", ErrBadRequest)
+			return nil, fmt.Errorf("account not found: %w", core.ErrBadRequest)
 		}
 
 		hasAccount = true
@@ -436,48 +381,48 @@ func (s TransactionRecurringImpl) validateAndEnrichTransactionRecurring(
 		temp, err := uuid.Parse(input.TreasureChestId)
 		if err != nil {
 			slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-			return nil, fmt.Errorf("could not parse treasureChestId: %w", ErrBadRequest)
+			return nil, fmt.Errorf("could not parse treasureChestId: %w", core.ErrBadRequest)
 		}
 		treasureChestUuid = &temp
-		var treasureChest types.TreasureChest
+		var treasureChest treasure_chest_types.TreasureChest
 		err = tx.GetContext(ctx, &treasureChest, `SELECT * FROM treasure_chest WHERE id = ? AND user_id = ?`, treasureChestUuid, userId)
-		err = db.TransformAndLogDbError(ctx, "transactionRecurring validate", nil, err)
+		err = core.TransformAndLogDbError(ctx, "transactionRecurring validate", nil, err)
 		if err != nil {
-			if errors.Is(err, db.ErrNotFound) {
-				return nil, fmt.Errorf("treasure chest not found: %w", ErrBadRequest)
+			if errors.Is(err, core.ErrNotFound) {
+				return nil, fmt.Errorf("treasure chest not found: %w", core.ErrBadRequest)
 			}
 			return nil, err
 		}
 		if treasureChest.ParentId == nil {
-			return nil, fmt.Errorf("treasure chest is a group: %w", ErrBadRequest)
+			return nil, fmt.Errorf("treasure chest is a group: %w", core.ErrBadRequest)
 		}
 		hasTreasureChest = true
 	}
 
 	if !hasAccount && !hasTreasureChest {
 		slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-		return nil, fmt.Errorf("either account or treasure chest is required: %w", ErrBadRequest)
+		return nil, fmt.Errorf("either account or treasure chest is required: %w", core.ErrBadRequest)
 	}
 	if hasAccount && hasTreasureChest {
 		slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-		return nil, fmt.Errorf("either account or treasure chest is required, not both: %w", ErrBadRequest)
+		return nil, fmt.Errorf("either account or treasure chest is required, not both: %w", core.ErrBadRequest)
 	}
 
 	valueFloat, err := strconv.ParseFloat(input.Value, 64)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-		return nil, fmt.Errorf("could not parse value: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse value: %w", core.ErrBadRequest)
 	}
 	value := int64(math.Round(valueFloat * DECIMALS_MULTIPLIER))
 
 	if input.Party != "" {
-		err = validateString(input.Party, "party")
+		err = core.ValidateString(input.Party, "party")
 		if err != nil {
 			return nil, err
 		}
 	}
 	if input.Description != "" {
-		err = validateString(input.Description, "description")
+		err = core.ValidateString(input.Description, "description")
 		if err != nil {
 			return nil, err
 		}
@@ -485,25 +430,25 @@ func (s TransactionRecurringImpl) validateAndEnrichTransactionRecurring(
 	intervalMonths, err = strconv.ParseInt(input.IntervalMonths, 10, 0)
 	if err != nil {
 		slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-		return nil, fmt.Errorf("could not parse intervalMonths: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse intervalMonths: %w", core.ErrBadRequest)
 	}
 	if intervalMonths < 1 {
 		slog.ErrorContext(ctx, "transactionRecurring validate", "err", err)
-		return nil, fmt.Errorf("intervalMonths needs to be greater than 0: %w", ErrBadRequest)
+		return nil, fmt.Errorf("intervalMonths needs to be greater than 0: %w", core.ErrBadRequest)
 	}
 	var nextExecution *time.Time = nil
 	if input.NextExecution != "" {
 		t, err := time.Parse("2006-01-02", input.NextExecution)
 		if err != nil {
 			slog.ErrorContext(ctx, "transaction validate", "err", err)
-			return nil, fmt.Errorf("could not parse timestamp: %w", ErrBadRequest)
+			return nil, fmt.Errorf("could not parse timestamp: %w", core.ErrBadRequest)
 		}
 
 		t = time.Date(t.Year(), t.Month(), 1, 0, 0, 0, 0, t.Location())
 		nextExecution = &t
 	}
 
-	transactionRecurring := types.TransactionRecurring{
+	transactionRecurring := TransactionRecurring{
 		Id:     id,
 		UserId: userId,
 

internal/transaction_recurring/template.templ

@@ -1,11 +1,13 @@
 package transaction_recurring
 
-import "fmt"
-import "time"
-import "spend-sparrow/internal/template/svg"
-import "spend-sparrow/internal/types"
+import (
+	"fmt"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/template/svg"
+	"time"
+)
 
-templ TransactionRecurringItems(transactionsRecurring []*types.TransactionRecurring, editId, accountId, treasureChestId string) {
+templ TransactionRecurringItems(transactionsRecurring []*TransactionRecurring, editId, accountId, treasureChestId string) {
 	<!-- Don't use table, because embedded forms are only valid for cells -->
 	<div id="transaction-recurring" class="max-w-full grid gap-4 mt-10 grid-cols-[max-content_auto_auto_auto_auto_max-content] items-center text-xl">
 		<span class="text-sm text-gray-500">Next Execution</span>
@@ -27,7 +29,7 @@ templ TransactionRecurringItems(transactionsRecurring []*types.TransactionRecurr
 	</div>
 }
 
-templ TransactionRecurringItem(transactionRecurring *types.TransactionRecurring, accountId, treasureChestId string) {
+templ TransactionRecurringItem(transactionRecurring *TransactionRecurring, accountId, treasureChestId string) {
 	<p class="text-gray-600">
 		if transactionRecurring.NextExecution != nil {
 			{ transactionRecurring.NextExecution.Format("2006/01") }
@@ -53,9 +55,9 @@ templ TransactionRecurringItem(transactionRecurring *types.TransactionRecurring,
 		Every  <span class="text-xl">{ transactionRecurring.IntervalMonths }</span> month(s)
 	</p>
 	if transactionRecurring.Value < 0 {
-		<p class="text-right text-red-700">{ types.FormatEuros(transactionRecurring.Value) }</p>
+		<p class="text-right text-red-700">{ core.FormatEuros(transactionRecurring.Value) }</p>
 	} else {
-		<p class="text-right text-green-700">{ types.FormatEuros(transactionRecurring.Value) }</p>
+		<p class="text-right text-green-700">{ core.FormatEuros(transactionRecurring.Value) }</p>
 	}
 	<div class="flex gap-2">
 		<button
@@ -84,7 +86,7 @@ templ TransactionRecurringItem(transactionRecurring *types.TransactionRecurring,
 	</div>
 }
 
-templ EditTransactionRecurring(transactionRecurring *types.TransactionRecurring, accountId, treasureChestId string) {
+templ EditTransactionRecurring(transactionRecurring *TransactionRecurring, accountId, treasureChestId string) {
 	{{
 		var (
 			id string

internal/transaction_recurring/types.go

@@ -1,4 +1,4 @@
-package types
+package transaction_recurring
 
 import (
 	"time"

internal/treasure_chest/handler.go

@@ -1,131 +1,128 @@
-package handler
+package treasure_chest
 
 import (
 	"net/http"
-	"spend-sparrow/internal/handler/middleware"
-	"spend-sparrow/internal/service"
-	tr "spend-sparrow/internal/template/transaction_recurring"
-	t "spend-sparrow/internal/template/treasurechest"
-	"spend-sparrow/internal/types"
-	"spend-sparrow/internal/utils"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/transaction_recurring"
+	"spend-sparrow/internal/treasure_chest_types"
 
 	"github.com/a-h/templ"
 	"github.com/google/uuid"
 )
 
-type TreasureChest interface {
+type Handler interface {
 	Handle(router *http.ServeMux)
 }
 
-type TreasureChestImpl struct {
-	s                    service.TreasureChest
-	transactionRecurring service.TransactionRecurring
-	r                    *Render
+type HandlerImpl struct {
+	s                    Service
+	transactionRecurring transaction_recurring.Service
+	r                    *core.Render
 }
 
-func NewTreasureChest(s service.TreasureChest, transactionRecurring service.TransactionRecurring, r *Render) TreasureChest {
-	return TreasureChestImpl{
+func NewHandler(s Service, transactionRecurring transaction_recurring.Service, r *core.Render) Handler {
+	return HandlerImpl{
 		s:                    s,
 		transactionRecurring: transactionRecurring,
 		r:                    r,
 	}
 }
 
-func (h TreasureChestImpl) Handle(r *http.ServeMux) {
-	r.Handle("GET /treasurechest", h.handleTreasureChestPage())
-	r.Handle("GET /treasurechest/{id}", h.handleTreasureChestItemComp())
-	r.Handle("POST /treasurechest/{id}", h.handleUpdateTreasureChest())
-	r.Handle("DELETE /treasurechest/{id}", h.handleDeleteTreasureChest())
+func (h HandlerImpl) Handle(r *http.ServeMux) {
+	r.Handle("GET /treasurechest", h.handleHandlerPage())
+	r.Handle("GET /treasurechest/{id}", h.handleHandlerItemComp())
+	r.Handle("POST /treasurechest/{id}", h.handleUpdateHandler())
+	r.Handle("DELETE /treasurechest/{id}", h.handleDeleteHandler())
 }
 
-func (h TreasureChestImpl) handleTreasureChestPage() http.HandlerFunc {
+func (h HandlerImpl) handleHandlerPage() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		treasureChests, err := h.s.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		transactionsRecurring, err := h.transactionRecurring.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		monthlySums := h.calculateMonthlySums(treasureChests, transactionsRecurring)
 
-		comp := t.TreasureChest(treasureChests, monthlySums)
+		comp := TreasureChestComp(treasureChests, monthlySums)
 		h.r.RenderLayout(r, w, comp, user)
 	}
 }
 
-func (h TreasureChestImpl) handleTreasureChestItemComp() http.HandlerFunc {
+func (h HandlerImpl) handleHandlerItemComp() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		treasureChests, err := h.s.GetAll(r.Context(), user)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		id := r.PathValue("id")
 		if id == "new" {
-			comp := t.EditTreasureChest(nil, treasureChests, nil)
+			comp := EditTreasureChest(nil, treasureChests, nil)
 			h.r.Render(r, w, comp)
 			return
 		}
 
 		treasureChest, err := h.s.Get(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
 		transactionsRecurring, err := h.transactionRecurring.GetAllByTreasureChest(r.Context(), user, treasureChest.Id.String())
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
-		transactionsRec := tr.TransactionRecurringItems(transactionsRecurring, "", "", treasureChest.Id.String())
+		transactionsRec := transaction_recurring.TransactionRecurringItems(transactionsRecurring, "", "", treasureChest.Id.String())
 
 		var comp templ.Component
 		if r.URL.Query().Get("edit") == "true" {
-			comp = t.EditTreasureChest(treasureChest, treasureChests, transactionsRec)
+			comp = EditTreasureChest(treasureChest, treasureChests, transactionsRec)
 		} else {
 			monthlySums := h.calculateMonthlySums(treasureChests, transactionsRecurring)
-			comp = t.TreasureChestItem(treasureChest, monthlySums)
+			comp = TreasureChestItem(treasureChest, monthlySums)
 		}
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h TreasureChestImpl) handleUpdateTreasureChest() http.HandlerFunc {
+func (h HandlerImpl) handleUpdateHandler() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
 		var (
-			treasureChest *types.TreasureChest
+			treasureChest *treasure_chest_types.TreasureChest
 			err           error
 		)
 		id := r.PathValue("id")
@@ -134,38 +131,38 @@ func (h TreasureChestImpl) handleUpdateTreasureChest() http.HandlerFunc {
 		if id == "new" {
 			treasureChest, err = h.s.Add(r.Context(), user, parentId, name)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		} else {
 			treasureChest, err = h.s.Update(r.Context(), user, id, parentId, name)
 			if err != nil {
-				handleError(w, r, err)
+				core.HandleError(w, r, err)
 				return
 			}
 		}
 
 		transactionsRecurring, err := h.transactionRecurring.GetAllByTreasureChest(r.Context(), user, treasureChest.Id.String())
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 
-		treasureChests := make([]*types.TreasureChest, 1)
+		treasureChests := make([]*treasure_chest_types.TreasureChest, 1)
 		treasureChests[0] = treasureChest
 		monthlySums := h.calculateMonthlySums(treasureChests, transactionsRecurring)
-		comp := t.TreasureChestItem(treasureChest, monthlySums)
+		comp := TreasureChestItem(treasureChest, monthlySums)
 		h.r.Render(r, w, comp)
 	}
 }
 
-func (h TreasureChestImpl) handleDeleteTreasureChest() http.HandlerFunc {
+func (h HandlerImpl) handleDeleteHandler() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		updateSpan(r)
+		core.UpdateSpan(r)
 
-		user := middleware.GetUser(r)
+		user := core.GetUser(r)
 		if user == nil {
-			utils.DoRedirect(w, r, "/auth/signin")
+			core.DoRedirect(w, r, "/auth/signin")
 			return
 		}
 
@@ -173,15 +170,15 @@ func (h TreasureChestImpl) handleDeleteTreasureChest() http.HandlerFunc {
 
 		err := h.s.Delete(r.Context(), user, id)
 		if err != nil {
-			handleError(w, r, err)
+			core.HandleError(w, r, err)
 			return
 		}
 	}
 }
 
-func (h TreasureChestImpl) calculateMonthlySums(
-	treasureChests []*types.TreasureChest,
-	transactionsRecurring []*types.TransactionRecurring,
+func (h HandlerImpl) calculateMonthlySums(
+	treasureChests []*treasure_chest_types.TreasureChest,
+	transactionsRecurring []*transaction_recurring.TransactionRecurring,
 ) map[uuid.UUID]int64 {
 	monthlySums := make(map[uuid.UUID]int64)
 	for _, tc := range treasureChests {

internal/treasure_chest/service.go

@@ -1,4 +1,4 @@
-package service
+package treasure_chest
 
 import (
 	"context"
@@ -6,46 +6,47 @@ import (
 	"fmt"
 	"log/slog"
 	"slices"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/treasure_chest_types"
 
 	"github.com/google/uuid"
 	"github.com/jmoiron/sqlx"
 )
 
-type TreasureChest interface {
-	Add(ctx context.Context, user *types.User, parentId, name string) (*types.TreasureChest, error)
-	Update(ctx context.Context, user *types.User, id, parentId, name string) (*types.TreasureChest, error)
-	Get(ctx context.Context, user *types.User, id string) (*types.TreasureChest, error)
-	GetAll(ctx context.Context, user *types.User) ([]*types.TreasureChest, error)
-	Delete(ctx context.Context, user *types.User, id string) error
+type Service interface {
+	Add(ctx context.Context, user *auth_types.User, parentId, name string) (*treasure_chest_types.TreasureChest, error)
+	Update(ctx context.Context, user *auth_types.User, id, parentId, name string) (*treasure_chest_types.TreasureChest, error)
+	Get(ctx context.Context, user *auth_types.User, id string) (*treasure_chest_types.TreasureChest, error)
+	GetAll(ctx context.Context, user *auth_types.User) ([]*treasure_chest_types.TreasureChest, error)
+	Delete(ctx context.Context, user *auth_types.User, id string) error
 }
 
-type TreasureChestImpl struct {
+type ServiceImpl struct {
 	db     *sqlx.DB
-	clock  Clock
-	random Random
+	clock  core.Clock
+	random core.Random
 }
 
-func NewTreasureChest(db *sqlx.DB, random Random, clock Clock) TreasureChest {
-	return TreasureChestImpl{
+func NewService(db *sqlx.DB, random core.Random, clock core.Clock) Service {
+	return ServiceImpl{
 		db:     db,
 		clock:  clock,
 		random: random,
 	}
 }
 
-func (s TreasureChestImpl) Add(ctx context.Context, user *types.User, parentId, name string) (*types.TreasureChest, error) {
+func (s ServiceImpl) Add(ctx context.Context, user *auth_types.User, parentId, name string) (*treasure_chest_types.TreasureChest, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
 	newId, err := s.random.UUID(ctx)
 	if err != nil {
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
-	err = validateString(name, "name")
+	err = core.ValidateString(name, "name")
 	if err != nil {
 		return nil, err
 	}
@@ -57,12 +58,12 @@ func (s TreasureChestImpl) Add(ctx context.Context, user *types.User, parentId,
 			return nil, err
 		}
 		if parent.ParentId != nil {
-			return nil, fmt.Errorf("only a depth of 1 allowed: %w", ErrBadRequest)
+			return nil, fmt.Errorf("only a depth of 1 allowed: %w", core.ErrBadRequest)
 		}
 		parentUuid = &parent.Id
 	}
 
-	treasureChest := &types.TreasureChest{
+	treasureChest := &treasure_chest_types.TreasureChest{
 		Id:       newId,
 		ParentId: parentUuid,
 		UserId:   user.Id,
@@ -80,7 +81,7 @@ func (s TreasureChestImpl) Add(ctx context.Context, user *types.User, parentId,
 	r, err := s.db.NamedExecContext(ctx, `
 		INSERT INTO treasure_chest (id, parent_id, user_id, name, current_balance, created_at, created_by) 
 		VALUES (:id, :parent_id, :user_id, :name, :current_balance, :created_at, :created_by)`, treasureChest)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Insert", r, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Insert", r, err)
 	if err != nil {
 		return nil, err
 	}
@@ -88,22 +89,22 @@ func (s TreasureChestImpl) Add(ctx context.Context, user *types.User, parentId,
 	return treasureChest, nil
 }
 
-func (s TreasureChestImpl) Update(ctx context.Context, user *types.User, idStr, parentId, name string) (*types.TreasureChest, error) {
+func (s ServiceImpl) Update(ctx context.Context, user *auth_types.User, idStr, parentId, name string) (*treasure_chest_types.TreasureChest, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
-	err := validateString(name, "name")
+	err := core.ValidateString(name, "name")
 	if err != nil {
 		return nil, err
 	}
 	id, err := uuid.Parse(idStr)
 	if err != nil {
 		slog.ErrorContext(ctx, "treasureChest update", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -111,14 +112,14 @@ func (s TreasureChestImpl) Update(ctx context.Context, user *types.User, idStr,
 		_ = tx.Rollback()
 	}()
 
-	treasureChest := &types.TreasureChest{}
+	treasureChest := &treasure_chest_types.TreasureChest{}
 	err = tx.GetContext(ctx, treasureChest, `SELECT * FROM treasure_chest WHERE user_id = ? AND id = ?`, user.Id, id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
+		if errors.Is(err, core.ErrNotFound) {
 			return nil, fmt.Errorf("treasureChest %v not found: %w", idStr, err)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	var parentUuid *uuid.UUID
@@ -129,12 +130,12 @@ func (s TreasureChestImpl) Update(ctx context.Context, user *types.User, idStr,
 		}
 		var childCount int
 		err = tx.GetContext(ctx, &childCount, `SELECT COUNT(*) FROM treasure_chest WHERE user_id = ? AND parent_id = ?`, user.Id, id)
-		err = db.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
+		err = core.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
 		if err != nil {
 			return nil, err
 		}
 		if parent.ParentId != nil || childCount > 0 {
-			return nil, fmt.Errorf("only one level allowed: %w", ErrBadRequest)
+			return nil, fmt.Errorf("only one level allowed: %w", core.ErrBadRequest)
 		}
 
 		parentUuid = &parent.Id
@@ -156,13 +157,13 @@ func (s TreasureChestImpl) Update(ctx context.Context, user *types.User, idStr,
 			updated_by = :updated_by
 		WHERE id = :id
 			AND user_id = :user_id`, treasureChest)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Update", r, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Update", r, err)
 	if err != nil {
 		return nil, err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Update", nil, err)
 	if err != nil {
 		return nil, err
 	}
@@ -170,56 +171,56 @@ func (s TreasureChestImpl) Update(ctx context.Context, user *types.User, idStr,
 	return treasureChest, nil
 }
 
-func (s TreasureChestImpl) Get(ctx context.Context, user *types.User, id string) (*types.TreasureChest, error) {
+func (s ServiceImpl) Get(ctx context.Context, user *auth_types.User, id string) (*treasure_chest_types.TreasureChest, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 	uuid, err := uuid.Parse(id)
 	if err != nil {
 		slog.ErrorContext(ctx, "treasureChest get", "err", err)
-		return nil, fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return nil, fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
-	var treasureChest types.TreasureChest
+	var treasureChest treasure_chest_types.TreasureChest
 	err = s.db.GetContext(ctx, &treasureChest, `SELECT * FROM treasure_chest WHERE user_id = ? AND id = ?`, user.Id, uuid)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Get", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Get", nil, err)
 	if err != nil {
-		if errors.Is(err, db.ErrNotFound) {
+		if errors.Is(err, core.ErrNotFound) {
 			return nil, fmt.Errorf("treasureChest %v not found: %w", id, err)
 		}
-		return nil, types.ErrInternal
+		return nil, core.ErrInternal
 	}
 
 	return &treasureChest, nil
 }
 
-func (s TreasureChestImpl) GetAll(ctx context.Context, user *types.User) ([]*types.TreasureChest, error) {
+func (s ServiceImpl) GetAll(ctx context.Context, user *auth_types.User) ([]*treasure_chest_types.TreasureChest, error) {
 	if user == nil {
-		return nil, ErrUnauthorized
+		return nil, core.ErrUnauthorized
 	}
 
-	treasureChests := make([]*types.TreasureChest, 0)
+	treasureChests := make([]*treasure_chest_types.TreasureChest, 0)
 	err := s.db.SelectContext(ctx, &treasureChests, `SELECT * FROM treasure_chest WHERE user_id = ?`, user.Id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest GetAll", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest GetAll", nil, err)
 	if err != nil {
 		return nil, err
 	}
 
-	return sortTreasureChests(treasureChests), nil
+	return SortTreasureChests(treasureChests), nil
 }
 
-func (s TreasureChestImpl) Delete(ctx context.Context, user *types.User, idStr string) error {
+func (s ServiceImpl) Delete(ctx context.Context, user *auth_types.User, idStr string) error {
 	if user == nil {
-		return ErrUnauthorized
+		return core.ErrUnauthorized
 	}
 	id, err := uuid.Parse(idStr)
 	if err != nil {
 		slog.ErrorContext(ctx, "treasureChest delete", "err", err)
-		return fmt.Errorf("could not parse Id: %w", ErrBadRequest)
+		return fmt.Errorf("could not parse Id: %w", core.ErrBadRequest)
 	}
 
 	tx, err := s.db.BeginTxx(ctx, nil)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
 	if err != nil {
 		return nil
 	}
@@ -229,47 +230,47 @@ func (s TreasureChestImpl) Delete(ctx context.Context, user *types.User, idStr s
 
 	childCount := 0
 	err = tx.GetContext(ctx, &childCount, `SELECT COUNT(*) FROM treasure_chest WHERE user_id = ? AND parent_id = ?`, user.Id, id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
 	if err != nil {
 		return err
 	}
 
 	if childCount > 0 {
-		return fmt.Errorf("treasure chest has children: %w", ErrBadRequest)
+		return fmt.Errorf("treasure chest has children: %w", core.ErrBadRequest)
 	}
 
 	transactionsCount := 0
 	err = tx.GetContext(ctx, &transactionsCount,
 		`SELECT COUNT(*) FROM "transaction" WHERE user_id = ? AND treasure_chest_id = ?`,
 		user.Id, id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
 	if err != nil {
 		return err
 	}
 	if transactionsCount > 0 {
-		return fmt.Errorf("treasure chest has transactions: %w", ErrBadRequest)
+		return fmt.Errorf("treasure chest has transactions: %w", core.ErrBadRequest)
 	}
 
 	recurringCount := 0
 	err = tx.GetContext(ctx, &recurringCount, `
 		SELECT COUNT(*) FROM transaction_recurring WHERE user_id = ? AND treasure_chest_id = ?`,
 		user.Id, id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
 	if err != nil {
 		return err
 	}
 	if recurringCount > 0 {
-		return fmt.Errorf("cannot delete treasure chest with existing recurring transactions: %w", ErrBadRequest)
+		return fmt.Errorf("cannot delete treasure chest with existing recurring transactions: %w", core.ErrBadRequest)
 	}
 
 	r, err := tx.ExecContext(ctx, `DELETE FROM treasure_chest WHERE id = ? AND user_id = ?`, id, user.Id)
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", r, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", r, err)
 	if err != nil {
 		return err
 	}
 
 	err = tx.Commit()
-	err = db.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
+	err = core.TransformAndLogDbError(ctx, "treasureChest Delete", nil, err)
 	if err != nil {
 		return err
 	}
@@ -277,12 +278,12 @@ func (s TreasureChestImpl) Delete(ctx context.Context, user *types.User, idStr s
 	return nil
 }
 
-func sortTreasureChests(nodes []*types.TreasureChest) []*types.TreasureChest {
+func SortTreasureChests(nodes []*treasure_chest_types.TreasureChest) []*treasure_chest_types.TreasureChest {
 	var (
-		roots []*types.TreasureChest
+		roots []*treasure_chest_types.TreasureChest
 	)
-	children := make(map[uuid.UUID][]*types.TreasureChest)
-	result := make([]*types.TreasureChest, 0)
+	children := make(map[uuid.UUID][]*treasure_chest_types.TreasureChest)
+	result := make([]*treasure_chest_types.TreasureChest, 0)
 
 	for _, node := range nodes {
 		if node.ParentId == nil {
@@ -292,7 +293,7 @@ func sortTreasureChests(nodes []*types.TreasureChest) []*types.TreasureChest {
 		}
 	}
 
-	slices.SortFunc(roots, func(a, b *types.TreasureChest) int {
+	slices.SortFunc(roots, func(a, b *treasure_chest_types.TreasureChest) int {
 		return compareStrings(a.Name, b.Name)
 	})
 
@@ -301,7 +302,7 @@ func sortTreasureChests(nodes []*types.TreasureChest) []*types.TreasureChest {
 
 		childList := children[root.Id]
 
-		slices.SortFunc(childList, func(a, b *types.TreasureChest) int {
+		slices.SortFunc(childList, func(a, b *treasure_chest_types.TreasureChest) int {
 			return compareStrings(a.Name, b.Name)
 		})
 		result = append(result, childList...)

internal/treasure_chest/template.templ

@@ -1,10 +1,13 @@
-package treasurechest
+package treasure_chest
 
-import "spend-sparrow/internal/template/svg"
-import "spend-sparrow/internal/types"
-import "github.com/google/uuid"
+import (
+	"github.com/google/uuid"
+	"spend-sparrow/internal/core"
+	"spend-sparrow/internal/template/svg"
+	"spend-sparrow/internal/treasure_chest_types"
+)
 
-templ TreasureChest(treasureChests []*types.TreasureChest, monthlySums map[uuid.UUID]int64) {
+templ TreasureChestComp(treasureChests []*treasure_chest_types.TreasureChest, monthlySums map[uuid.UUID]int64) {
 	<div class="max-w-6xl mt-10 mx-auto">
 		<button
 			hx-get="/treasurechest/new"
@@ -12,7 +15,9 @@ templ TreasureChest(treasureChests []*types.TreasureChest, monthlySums map[uuid.
 			hx-swap="afterbegin"
 			class="ml-auto text-center button button-primary px-2 flex items-center gap-2"
 		>
-			@svg.Plus()
+			<div class="w-3">
+				@svg.Plus()
+			</div>
 			New Treasure Chest
 		</button>
 		<div id="treasurechest-items" class="my-6 flex flex-col">
@@ -23,30 +28,30 @@ templ TreasureChest(treasureChests []*types.TreasureChest, monthlySums map[uuid.
 	</div>
 }
 
-templ EditTreasureChest(treasureChest *types.TreasureChest, parents []*types.TreasureChest, transactionsRecurring templ.Component) {
+templ EditTreasureChest(treasureChest *treasure_chest_types.TreasureChest, parents []*treasure_chest_types.TreasureChest, transactionsRecurring templ.Component) {
 	{{
-	var (
-		id        string
-		name      string
-		parentId  uuid.UUID
-		cancelUrl string
-	)
+		var (
+			id        string
+			name      string
+			parentId  uuid.UUID
+			cancelUrl string
+		)
 
-	indentation := " mt-10"
-	if treasureChest == nil {
-		id = "new"
-		name = ""
-		parentId = uuid.Nil
-		cancelUrl = "/empty"
-	} else {
-		id = treasureChest.Id.String()
-		name = treasureChest.Name
-		if treasureChest.ParentId != nil {
-			parentId = *treasureChest.ParentId
-			indentation = " mt-2 ml-14"
+		indentation := " mt-10"
+		if treasureChest == nil {
+			id = "new"
+			name = ""
+			parentId = uuid.Nil
+			cancelUrl = "/empty"
+		} else {
+			id = treasureChest.Id.String()
+			name = treasureChest.Name
+			if treasureChest.ParentId != nil {
+				parentId = *treasureChest.ParentId
+				indentation = " mt-2 ml-14"
+			}
+			cancelUrl = "/treasurechest/" + id
 		}
-		cancelUrl = "/treasurechest/" + id
-	}
 	}}
 	<div id={ "treasurechest-" + id } class={ "border-1 border-gray-300 p-4 bg-gray-50 rounded-lg" + indentation }>
 		<form
@@ -106,7 +111,9 @@ templ EditTreasureChest(treasureChest *types.TreasureChest, parents []*types.Tre
 					hx-swap="outerHTML"
 					class="button button-primary ml-auto px-2 flex items-center gap-2"
 				>
-					@svg.Plus()
+					<div class="w-3">
+						@svg.Plus()
+					</div>
 					<p>New Monthly Transaction</p>
 				</button>
 			</div>
@@ -115,30 +122,30 @@ templ EditTreasureChest(treasureChest *types.TreasureChest, parents []*types.Tre
 	</div>
 }
 
-templ TreasureChestItem(treasureChest *types.TreasureChest, monthlySums map[uuid.UUID]int64) {
+templ TreasureChestItem(treasureChest *treasure_chest_types.TreasureChest, monthlySums map[uuid.UUID]int64) {
 	{{
-	var indentation string
-	viewTransactions := ""
-	if treasureChest.ParentId != nil {
-		indentation = " mt-2 ml-14"
-	} else {
-		indentation = " mt-10"
-		viewTransactions = "hidden"
-	}
+		var indentation string
+		viewTransactions := ""
+		if treasureChest.ParentId != nil {
+			indentation = " mt-2 ml-14"
+		} else {
+			indentation = " mt-10"
+			viewTransactions = "hidden"
+		}
 	}}
 	<div id={ "treasurechest-" + treasureChest.Id.String() } class={ "border-1 border-gray-300 p-4 bg-gray-50 rounded-lg" + indentation }>
 		<div class="text-xl flex justify-end items-center gap-4">
 			<p class="mr-auto">{ treasureChest.Name }</p>
 			<p class="mr-20 text-gray-600">
 				if treasureChest.ParentId != nil {
-					+ { types.FormatEuros(monthlySums[treasureChest.Id]) } <span class="text-gray-500 text-sm">&nbsp;per month</span>
+					+ { core.FormatEuros(monthlySums[treasureChest.Id]) } <span class="text-gray-500 text-sm">&nbsp;per month</span>
 				}
 			</p>
 			if treasureChest.ParentId != nil {
 				if treasureChest.CurrentBalance < 0 {
-					<p class="mr-20 min-w-20 text-right text-red-700">{ types.FormatEuros(treasureChest.CurrentBalance) }</p>
+					<p class="mr-20 min-w-20 text-right text-red-700">{ core.FormatEuros(treasureChest.CurrentBalance) }</p>
 				} else {
-					<p class="mr-20 min-w-20 text-right text-green-700">{ types.FormatEuros(treasureChest.CurrentBalance) }</p>
+					<p class="mr-20 min-w-20 text-right text-green-700">{ core.FormatEuros(treasureChest.CurrentBalance) }</p>
 				}
 			}
 			<a
@@ -177,8 +184,8 @@ templ TreasureChestItem(treasureChest *types.TreasureChest, monthlySums map[uuid
 	</div>
 }
 
-func filterNoChildNoSelf(nodes []*types.TreasureChest, selfId string) []*types.TreasureChest {
-	var result []*types.TreasureChest
+func filterNoChildNoSelf(nodes []*treasure_chest_types.TreasureChest, selfId string) []*treasure_chest_types.TreasureChest {
+	var result []*treasure_chest_types.TreasureChest
 
 	for _, node := range nodes {
 		if node.ParentId == nil && node.Id.String() != selfId {

internal/treasure_chest_types/types.go

@@ -1,4 +1,4 @@
-package types
+package treasure_chest_types
 
 import (
 	"time"

internal/types/types.go

@@ -1,10 +0,0 @@
-package types
-
-import (
-	"errors"
-)
-
-var (
-	ErrInternal     = errors.New("internal server error")
-	ErrUnauthorized = errors.New("you are not authorized to perform this action")
-)

main.go

@@ -22,8 +22,11 @@ func main() {
 		return
 	}
 
-	db, err := otelsqlx.Open("sqlite3", "./data/spend-sparrow.db?_journal_mode=WAL",
-		otelsql.WithAttributes(semconv.DBSystemSqlite))
+	db, err := otelsqlx.Open(
+		"sqlite3",
+		"./data/spend-sparrow.db?_journal_mode=WAL",
+		otelsql.WithAttributes(semconv.DBSystemSqlite),
+	)
 	if err != nil {
 		slog.ErrorContext(ctx, "Could not open Database data.db", "err", err)
 		return

migration/010_budget.up.sql

@@ -0,0 +1,14 @@
+
+CREATE TABLE "budget" (
+	id TEXT NOT NULL UNIQUE PRIMARY KEY,
+	user_id TEXT NOT NULL,
+
+	description TEXT NOT NULL,
+	value INTEGER NOT NULL,
+
+	created_at DATETIME NOT NULL,
+	created_by TEXT NOT NULL,
+	updated_at DATETIME,
+	updated_by TEXT
+) WITHOUT ROWID;
+

migration/011_budget_rename_description.up.sql

@@ -0,0 +1 @@
+ALTER TABLE "budget" RENAME COLUMN description TO name;

migration/012_tag.up.sql

@@ -0,0 +1,13 @@
+
+CREATE TABLE "tag" (
+	id TEXT NOT NULL UNIQUE PRIMARY KEY,
+	user_id TEXT NOT NULL,
+
+	name TEXT NOT NULL,
+
+	created_at DATETIME NOT NULL,
+	created_by TEXT NOT NULL,
+	updated_at DATETIME,
+	updated_by TEXT
+) WITHOUT ROWID;
+

mocks/default.go

@@ -1 +0,0 @@
-package mocks

package-lock.json

@@ -9,23 +9,10 @@
       "version": "1.0.0",
       "license": "ISC",
       "devDependencies": {
-        "@tailwindcss/cli": "4.1.12",
+        "@tailwindcss/cli": "4.1.18",
         "echarts": "6.0.0",
-        "htmx.org": "2.0.6",
-        "tailwindcss": "4.1.12"
-      }
-    },
-    "node_modules/@isaacs/fs-minipass": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz",
-      "integrity": "sha512-wgm9Ehl2jpeqP3zw/7mo3kRHFp5MEDhqAdwy1fTGkHAwnkGOVsgpvQhL8B5n1qlb01jV3n/bI0ZfZp5lWA1k4w==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "minipass": "^7.0.4"
-      },
-      "engines": {
-        "node": ">=18.0.0"
+        "htmx.org": "2.0.8",
+        "tailwindcss": "4.1.18"
       }
     },
     "node_modules/@jridgewell/gen-mapping": {
@@ -61,9 +48,9 @@
       }
     },
     "node_modules/@jridgewell/sourcemap-codec": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.0.tgz",
-      "integrity": "sha512-gv3ZRaISU3fjPAgNsriBRqGWQL6quFx04YMPW/zD8XMLsU32mhCCbfbO6KZFLjvYpCZ8zyDEgqsgf+PwPaM7GQ==",
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz",
+      "integrity": "sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og==",
       "dev": true,
       "license": "MIT"
     },
@@ -388,73 +375,68 @@
       }
     },
     "node_modules/@tailwindcss/cli": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/cli/-/cli-4.1.12.tgz",
-      "integrity": "sha512-2PyJ5MGh/6JPS+cEaAq6MGDx3UemkX/mJt+/phm7/VOpycpecwNnHuFZbbgx6TNK/aIjvFOhhTVlappM7tmqvQ==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/cli/-/cli-4.1.18.tgz",
+      "integrity": "sha512-sMZ+lZbDyxwjD2E0L7oRUjJ01Ffjtme5OtjvvnC+cV4CEDcbqzbp25TCpxHj6kWLU9+DlqJOiNgSOgctC2aZmg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@parcel/watcher": "^2.5.1",
-        "@tailwindcss/node": "4.1.12",
-        "@tailwindcss/oxide": "4.1.12",
+        "@tailwindcss/node": "4.1.18",
+        "@tailwindcss/oxide": "4.1.18",
         "enhanced-resolve": "^5.18.3",
         "mri": "^1.2.0",
         "picocolors": "^1.1.1",
-        "tailwindcss": "4.1.12"
+        "tailwindcss": "4.1.18"
       },
       "bin": {
         "tailwindcss": "dist/index.mjs"
       }
     },
     "node_modules/@tailwindcss/node": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.1.12.tgz",
-      "integrity": "sha512-3hm9brwvQkZFe++SBt+oLjo4OLDtkvlE8q2WalaD/7QWaeM7KEJbAiY/LJZUaCs7Xa8aUu4xy3uoyX4q54UVdQ==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.1.18.tgz",
+      "integrity": "sha512-DoR7U1P7iYhw16qJ49fgXUlry1t4CpXeErJHnQ44JgTSKMaZUdf17cfn5mHchfJ4KRBZRFA/Coo+MUF5+gOaCQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@jridgewell/remapping": "^2.3.4",
         "enhanced-resolve": "^5.18.3",
-        "jiti": "^2.5.1",
-        "lightningcss": "1.30.1",
-        "magic-string": "^0.30.17",
+        "jiti": "^2.6.1",
+        "lightningcss": "1.30.2",
+        "magic-string": "^0.30.21",
         "source-map-js": "^1.2.1",
-        "tailwindcss": "4.1.12"
+        "tailwindcss": "4.1.18"
       }
     },
     "node_modules/@tailwindcss/oxide": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide/-/oxide-4.1.12.tgz",
-      "integrity": "sha512-gM5EoKHW/ukmlEtphNwaGx45fGoEmP10v51t9unv55voWh6WrOL19hfuIdo2FjxIaZzw776/BUQg7Pck++cIVw==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide/-/oxide-4.1.18.tgz",
+      "integrity": "sha512-EgCR5tTS5bUSKQgzeMClT6iCY3ToqE1y+ZB0AKldj809QXk1Y+3jB0upOYZrn9aGIzPtUsP7sX4QQ4XtjBB95A==",
       "dev": true,
-      "hasInstallScript": true,
       "license": "MIT",
-      "dependencies": {
-        "detect-libc": "^2.0.4",
-        "tar": "^7.4.3"
-      },
       "engines": {
         "node": ">= 10"
       },
       "optionalDependencies": {
-        "@tailwindcss/oxide-android-arm64": "4.1.12",
-        "@tailwindcss/oxide-darwin-arm64": "4.1.12",
-        "@tailwindcss/oxide-darwin-x64": "4.1.12",
-        "@tailwindcss/oxide-freebsd-x64": "4.1.12",
-        "@tailwindcss/oxide-linux-arm-gnueabihf": "4.1.12",
-        "@tailwindcss/oxide-linux-arm64-gnu": "4.1.12",
-        "@tailwindcss/oxide-linux-arm64-musl": "4.1.12",
-        "@tailwindcss/oxide-linux-x64-gnu": "4.1.12",
-        "@tailwindcss/oxide-linux-x64-musl": "4.1.12",
-        "@tailwindcss/oxide-wasm32-wasi": "4.1.12",
-        "@tailwindcss/oxide-win32-arm64-msvc": "4.1.12",
-        "@tailwindcss/oxide-win32-x64-msvc": "4.1.12"
+        "@tailwindcss/oxide-android-arm64": "4.1.18",
+        "@tailwindcss/oxide-darwin-arm64": "4.1.18",
+        "@tailwindcss/oxide-darwin-x64": "4.1.18",
+        "@tailwindcss/oxide-freebsd-x64": "4.1.18",
+        "@tailwindcss/oxide-linux-arm-gnueabihf": "4.1.18",
+        "@tailwindcss/oxide-linux-arm64-gnu": "4.1.18",
+        "@tailwindcss/oxide-linux-arm64-musl": "4.1.18",
+        "@tailwindcss/oxide-linux-x64-gnu": "4.1.18",
+        "@tailwindcss/oxide-linux-x64-musl": "4.1.18",
+        "@tailwindcss/oxide-wasm32-wasi": "4.1.18",
+        "@tailwindcss/oxide-win32-arm64-msvc": "4.1.18",
+        "@tailwindcss/oxide-win32-x64-msvc": "4.1.18"
       }
     },
     "node_modules/@tailwindcss/oxide-android-arm64": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-android-arm64/-/oxide-android-arm64-4.1.12.tgz",
-      "integrity": "sha512-oNY5pq+1gc4T6QVTsZKwZaGpBb2N1H1fsc1GD4o7yinFySqIuRZ2E4NvGasWc6PhYJwGK2+5YT1f9Tp80zUQZQ==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-android-arm64/-/oxide-android-arm64-4.1.18.tgz",
+      "integrity": "sha512-dJHz7+Ugr9U/diKJA0W6N/6/cjI+ZTAoxPf9Iz9BFRF2GzEX8IvXxFIi/dZBloVJX/MZGvRuFA9rqwdiIEZQ0Q==",
       "cpu": [
         "arm64"
       ],
@@ -469,9 +451,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-darwin-arm64": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-darwin-arm64/-/oxide-darwin-arm64-4.1.12.tgz",
-      "integrity": "sha512-cq1qmq2HEtDV9HvZlTtrj671mCdGB93bVY6J29mwCyaMYCP/JaUBXxrQQQm7Qn33AXXASPUb2HFZlWiiHWFytw==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-darwin-arm64/-/oxide-darwin-arm64-4.1.18.tgz",
+      "integrity": "sha512-Gc2q4Qhs660bhjyBSKgq6BYvwDz4G+BuyJ5H1xfhmDR3D8HnHCmT/BSkvSL0vQLy/nkMLY20PQ2OoYMO15Jd0A==",
       "cpu": [
         "arm64"
       ],
@@ -486,9 +468,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-darwin-x64": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-darwin-x64/-/oxide-darwin-x64-4.1.12.tgz",
-      "integrity": "sha512-6UCsIeFUcBfpangqlXay9Ffty9XhFH1QuUFn0WV83W8lGdX8cD5/+2ONLluALJD5+yJ7k8mVtwy3zMZmzEfbLg==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-darwin-x64/-/oxide-darwin-x64-4.1.18.tgz",
+      "integrity": "sha512-FL5oxr2xQsFrc3X9o1fjHKBYBMD1QZNyc1Xzw/h5Qu4XnEBi3dZn96HcHm41c/euGV+GRiXFfh2hUCyKi/e+yw==",
       "cpu": [
         "x64"
       ],
@@ -503,9 +485,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-freebsd-x64": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-freebsd-x64/-/oxide-freebsd-x64-4.1.12.tgz",
-      "integrity": "sha512-JOH/f7j6+nYXIrHobRYCtoArJdMJh5zy5lr0FV0Qu47MID/vqJAY3r/OElPzx1C/wdT1uS7cPq+xdYYelny1ww==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-freebsd-x64/-/oxide-freebsd-x64-4.1.18.tgz",
+      "integrity": "sha512-Fj+RHgu5bDodmV1dM9yAxlfJwkkWvLiRjbhuO2LEtwtlYlBgiAT4x/j5wQr1tC3SANAgD+0YcmWVrj8R9trVMA==",
       "cpu": [
         "x64"
       ],
@@ -520,9 +502,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-linux-arm-gnueabihf": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm-gnueabihf/-/oxide-linux-arm-gnueabihf-4.1.12.tgz",
-      "integrity": "sha512-v4Ghvi9AU1SYgGr3/j38PD8PEe6bRfTnNSUE3YCMIRrrNigCFtHZ2TCm8142X8fcSqHBZBceDx+JlFJEfNg5zQ==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm-gnueabihf/-/oxide-linux-arm-gnueabihf-4.1.18.tgz",
+      "integrity": "sha512-Fp+Wzk/Ws4dZn+LV2Nqx3IilnhH51YZoRaYHQsVq3RQvEl+71VGKFpkfHrLM/Li+kt5c0DJe/bHXK1eHgDmdiA==",
       "cpu": [
         "arm"
       ],
@@ -537,9 +519,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-linux-arm64-gnu": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm64-gnu/-/oxide-linux-arm64-gnu-4.1.12.tgz",
-      "integrity": "sha512-YP5s1LmetL9UsvVAKusHSyPlzSRqYyRB0f+Kl/xcYQSPLEw/BvGfxzbH+ihUciePDjiXwHh+p+qbSP3SlJw+6g==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm64-gnu/-/oxide-linux-arm64-gnu-4.1.18.tgz",
+      "integrity": "sha512-S0n3jboLysNbh55Vrt7pk9wgpyTTPD0fdQeh7wQfMqLPM/Hrxi+dVsLsPrycQjGKEQk85Kgbx+6+QnYNiHalnw==",
       "cpu": [
         "arm64"
       ],
@@ -554,9 +536,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-linux-arm64-musl": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm64-musl/-/oxide-linux-arm64-musl-4.1.12.tgz",
-      "integrity": "sha512-V8pAM3s8gsrXcCv6kCHSuwyb/gPsd863iT+v1PGXC4fSL/OJqsKhfK//v8P+w9ThKIoqNbEnsZqNy+WDnwQqCA==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-arm64-musl/-/oxide-linux-arm64-musl-4.1.18.tgz",
+      "integrity": "sha512-1px92582HkPQlaaCkdRcio71p8bc8i/ap5807tPRDK/uw953cauQBT8c5tVGkOwrHMfc2Yh6UuxaH4vtTjGvHg==",
       "cpu": [
         "arm64"
       ],
@@ -571,9 +553,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-linux-x64-gnu": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-x64-gnu/-/oxide-linux-x64-gnu-4.1.12.tgz",
-      "integrity": "sha512-xYfqYLjvm2UQ3TZggTGrwxjYaLB62b1Wiysw/YE3Yqbh86sOMoTn0feF98PonP7LtjsWOWcXEbGqDL7zv0uW8Q==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-x64-gnu/-/oxide-linux-x64-gnu-4.1.18.tgz",
+      "integrity": "sha512-v3gyT0ivkfBLoZGF9LyHmts0Isc8jHZyVcbzio6Wpzifg/+5ZJpDiRiUhDLkcr7f/r38SWNe7ucxmGW3j3Kb/g==",
       "cpu": [
         "x64"
       ],
@@ -588,9 +570,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-linux-x64-musl": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-x64-musl/-/oxide-linux-x64-musl-4.1.12.tgz",
-      "integrity": "sha512-ha0pHPamN+fWZY7GCzz5rKunlv9L5R8kdh+YNvP5awe3LtuXb5nRi/H27GeL2U+TdhDOptU7T6Is7mdwh5Ar3A==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-linux-x64-musl/-/oxide-linux-x64-musl-4.1.18.tgz",
+      "integrity": "sha512-bhJ2y2OQNlcRwwgOAGMY0xTFStt4/wyU6pvI6LSuZpRgKQwxTec0/3Scu91O8ir7qCR3AuepQKLU/kX99FouqQ==",
       "cpu": [
         "x64"
       ],
@@ -605,9 +587,9 @@
       }
     },
     "node_modules/@tailwindcss/oxide-wasm32-wasi": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/@tailwindcss/oxide-wasm32-wasi/-/oxide-wasm32-wasi-4.1.12.tgz",
-      "integrity": "sha512-4tSyu3dW+ktzdEpuk6g49KdEangu3eCYoqPhWNsZgUhyegEda3M9rG0/j1GV/JjVVsj+lG7jWAyrTlLzd/WEBg==",
+      "version": "4.1.18",
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-      "version": "0.30.17",
-      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.17.tgz",
-      "integrity": "sha512-sNPKHvyjVf7gyjwS4xGTaW/mCnF8wnjtifKBEhxfZ7E/S8tQ0rssrwGNn6q8JH/ohItJfSQp9mBtQYuTlH5QnA==",
+      "version": "0.30.21",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
+      "integrity": "sha512-vd2F4YUyEXKGcLHoq+TEyCjxueSeHnFxyyjNp80yg0XV4vUhnDer/lvvlqM/arB5bXQN5K2/3oinyCRyx8T2CQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@jridgewell/sourcemap-codec": "^1.5.0"
+        "@jridgewell/sourcemap-codec": "^1.5.5"
       }
     },
     "node_modules/micromatch": {
@@ -1142,45 +1126,6 @@
         "node": ">=8.6"
       }
     },
-    "node_modules/minipass": {
-      "version": "7.1.2",
-      "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.2.tgz",
-      "integrity": "sha512-qOOzS1cBTWYF4BH8fVePDBOO9iptMnGUEZwNc/cMWnTV2nVLZ7VoNWEPHkYczZA0pdoA7dl6e7FL659nX9S2aw==",
-      "dev": true,
-      "license": "ISC",
-      "engines": {
-        "node": ">=16 || 14 >=14.17"
-      }
-    },
-    "node_modules/minizlib": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-3.0.2.tgz",
-      "integrity": "sha512-oG62iEk+CYt5Xj2YqI5Xi9xWUeZhDI8jjQmC5oThVH5JGCTgIjr7ciJDzC7MBzYd//WvR1OTmP5Q38Q8ShQtVA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "minipass": "^7.1.2"
-      },
-      "engines": {
-        "node": ">= 18"
-      }
-    },
-    "node_modules/mkdirp": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-3.0.1.tgz",
-      "integrity": "sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==",
-      "dev": true,
-      "license": "MIT",
-      "bin": {
-        "mkdirp": "dist/cjs/src/bin.js"
-      },
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/isaacs"
-      }
-    },
     "node_modules/mri": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/mri/-/mri-1.2.0.tgz",
@@ -1229,9 +1174,9 @@
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.1.12",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.12.tgz",
-      "integrity": "sha512-DzFtxOi+7NsFf7DBtI3BJsynR+0Yp6etH+nRPTbpWnS2pZBaSksv/JGctNwSWzbFjp0vxSqknaUylseZqMDGrA==",
+      "version": "4.1.18",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.18.tgz",
+      "integrity": "sha512-4+Z+0yiYyEtUVCScyfHCxOYP06L5Ne+JiHhY2IjR2KWMIWhJOYZKLSGZaP5HkZ8+bY0cxfzwDE5uOmzFXyIwxw==",
       "dev": true,
       "license": "MIT"
     },
@@ -1245,24 +1190,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/tar": {
-      "version": "7.4.3",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-7.4.3.tgz",
-      "integrity": "sha512-5S7Va8hKfV7W5U6g3aYxXmlPoZVAwUMy9AOKyF2fVuZa2UD3qZjg578OrLRt8PcNN1PleVaL/5/yYATNL0ICUw==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "@isaacs/fs-minipass": "^4.0.0",
-        "chownr": "^3.0.0",
-        "minipass": "^7.1.2",
-        "minizlib": "^3.0.1",
-        "mkdirp": "^3.0.1",
-        "yallist": "^5.0.0"
-      },
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/to-regex-range": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -1283,16 +1210,6 @@
       "dev": true,
       "license": "0BSD"
     },
-    "node_modules/yallist": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz",
-      "integrity": "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw==",
-      "dev": true,
-      "license": "BlueOak-1.0.0",
-      "engines": {
-        "node": ">=18"
-      }
-    },
     "node_modules/zrender": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/zrender/-/zrender-6.0.0.tgz",

package.json

@@ -11,9 +11,9 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "@tailwindcss/cli": "4.1.12",
-    "htmx.org": "2.0.6",
-    "tailwindcss": "4.1.12",
+    "@tailwindcss/cli": "4.1.18",
+    "htmx.org": "2.0.8",
+    "tailwindcss": "4.1.18",
     "echarts": "6.0.0"
   }
 }

static/js/layout.js

@@ -1,11 +1,10 @@
 
 document.addEventListener("DOMContentLoaded", () => {
-	menuButton.addEventListener("click", function (e) {
+	menuButton.addEventListener("click", function() {
 		menu.showModal();
 	});
-	menuButtonClose.addEventListener("click", function (e) {
+	menuButtonClose.addEventListener("click", function() {
 		menu.close();
 	});
-
 })
 

static/js/time.js

@@ -11,7 +11,7 @@ function updateTime() {
 	document.querySelectorAll(".datetime").forEach((el) => {
 		if (el.textContent !== "") {
 			el.textContent = el.textContent.includes("UTC") ? new Date(el.textContent).toLocaleString([], { day: 'numeric', month: 'short', year: 'numeric' }) : el.textContent;
-		} else if (el.attributes['value'] !== "") {
+		} else if (el.attributes['value'] && el.attributes['value'] !== "") {
 			const value = el.attributes['value'].value;
 			const newDate = value.includes("UTC") ? new Date(value) : value;
 			el.valueAsDate = newDate;

static/js/transaction.js

@@ -1,10 +1,16 @@
 
 document.addEventListener("DOMContentLoaded", () => {
-	if (!page || !page1 || !pagePrev1 || !pageNext1 || !page2 || !pagePrev2 || !pageNext2 || !transactionFilterForm) {
+	if (typeof page === "undefined" ||
+		typeof page1 === "undefined" ||
+		typeof pagePrev1 === "undefined" ||
+		typeof pageNext1 === "undefined" ||
+		typeof page2 === "undefined" ||
+		typeof pagePrev2 === "undefined" ||
+		typeof pageNext2 === "undefined" ||
+		typeof transactionFilterForm === "undefined") {
 		return;
 	}
 
-
 	const scrollToTop = function() {
 		window.scrollTo(0, 0);
 	};

test/auth_it_test.go

@@ -2,8 +2,9 @@ package test_test
 
 import (
 	"context"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/authentication"
+	"spend-sparrow/internal/core"
 	"testing"
 	"time"
 
@@ -27,7 +28,7 @@ func setupDb(t *testing.T) *sqlx.DB {
 		}
 	})
 
-	err = db.RunMigrations(context.Background(), d, "../")
+	err = core.RunMigrations(context.Background(), d, "../")
 	if err != nil {
 		t.Fatalf("Error running migrations: %v", err)
 	}
@@ -42,11 +43,11 @@ func TestUser(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		verifiedAt := time.Date(2020, 1, 5, 13, 0, 0, 0, time.UTC)
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
-		expected := types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
+		expected := auth_types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
 
 		err := underTest.InsertUser(context.Background(), expected)
 		require.NoError(t, err)
@@ -63,38 +64,38 @@ func TestUser(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		_, err := underTest.GetUserByEmail(context.Background(), "nonExistentEmail")
-		assert.Equal(t, db.ErrNotFound, err)
+		assert.Equal(t, core.ErrNotFound, err)
 	})
 	t.Run("should return ErrUserExist", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		verifiedAt := time.Date(2020, 1, 5, 13, 0, 0, 0, time.UTC)
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
-		user := types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
+		user := auth_types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
 
 		err := underTest.InsertUser(context.Background(), user)
 		require.NoError(t, err)
 
 		err = underTest.InsertUser(context.Background(), user)
-		assert.Equal(t, db.ErrAlreadyExists, err)
+		assert.Equal(t, core.ErrAlreadyExists, err)
 	})
 	t.Run("should return ErrInternal on missing NOT NULL fields", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
-		user := types.NewUser(uuid.New(), "some@email.de", false, nil, false, []byte("somePass"), nil, createAt)
+		user := auth_types.NewUser(uuid.New(), "some@email.de", false, nil, false, []byte("somePass"), nil, createAt)
 
 		err := underTest.InsertUser(context.Background(), user)
-		assert.Equal(t, types.ErrInternal, err)
+		assert.Equal(t, core.ErrInternal, err)
 	})
 }
 
@@ -105,11 +106,11 @@ func TestToken(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
 		expiresAt := createAt.Add(24 * time.Hour)
-		expected := types.NewToken(uuid.New(), "sessionId", "token", types.TokenTypeCsrf, createAt, expiresAt)
+		expected := auth_types.NewToken(uuid.New(), "sessionId", "token", auth_types.TokenTypeCsrf, createAt, expiresAt)
 
 		err := underTest.InsertToken(context.Background(), expected)
 		require.NoError(t, err)
@@ -121,25 +122,25 @@ func TestToken(t *testing.T) {
 		expected.SessionId = ""
 		actuals, err := underTest.GetTokensByUserIdAndType(context.Background(), expected.UserId, expected.Type)
 		require.NoError(t, err)
-		assert.Equal(t, []*types.Token{expected}, actuals)
+		assert.Equal(t, []*auth_types.Token{expected}, actuals)
 
 		expected.SessionId = "sessionId"
 		expected.UserId = uuid.Nil
 		actuals, err = underTest.GetTokensBySessionIdAndType(context.Background(), expected.SessionId, expected.Type)
 		require.NoError(t, err)
-		assert.Equal(t, []*types.Token{expected}, actuals)
+		assert.Equal(t, []*auth_types.Token{expected}, actuals)
 	})
 	t.Run("should insert and return multiple tokens", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
 		expiresAt := createAt.Add(24 * time.Hour)
 		userId := uuid.New()
-		expected1 := types.NewToken(userId, "sessionId", "token1", types.TokenTypeCsrf, createAt, expiresAt)
-		expected2 := types.NewToken(userId, "sessionId", "token2", types.TokenTypeCsrf, createAt, expiresAt)
+		expected1 := auth_types.NewToken(userId, "sessionId", "token1", auth_types.TokenTypeCsrf, createAt, expiresAt)
+		expected2 := auth_types.NewToken(userId, "sessionId", "token2", auth_types.TokenTypeCsrf, createAt, expiresAt)
 
 		err := underTest.InsertToken(context.Background(), expected1)
 		require.NoError(t, err)
@@ -150,7 +151,7 @@ func TestToken(t *testing.T) {
 		expected2.UserId = uuid.Nil
 		actuals, err := underTest.GetTokensBySessionIdAndType(context.Background(), expected1.SessionId, expected1.Type)
 		require.NoError(t, err)
-		assert.Equal(t, []*types.Token{expected1, expected2}, actuals)
+		assert.Equal(t, []*auth_types.Token{expected1, expected2}, actuals)
 
 		expected1.SessionId = ""
 		expected2.SessionId = ""
@@ -158,49 +159,49 @@ func TestToken(t *testing.T) {
 		expected2.UserId = userId
 		actuals, err = underTest.GetTokensByUserIdAndType(context.Background(), userId, expected1.Type)
 		require.NoError(t, err)
-		assert.Equal(t, []*types.Token{expected1, expected2}, actuals)
+		assert.Equal(t, []*auth_types.Token{expected1, expected2}, actuals)
 	})
 	t.Run("should return ErrNotFound", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		_, err := underTest.GetToken(context.Background(), "nonExistent")
-		assert.Equal(t, db.ErrNotFound, err)
+		assert.Equal(t, core.ErrNotFound, err)
 
-		_, err = underTest.GetTokensByUserIdAndType(context.Background(), uuid.New(), types.TokenTypeEmailVerify)
-		assert.Equal(t, db.ErrNotFound, err)
+		_, err = underTest.GetTokensByUserIdAndType(context.Background(), uuid.New(), auth_types.TokenTypeEmailVerify)
+		assert.Equal(t, core.ErrNotFound, err)
 
-		_, err = underTest.GetTokensBySessionIdAndType(context.Background(), "sessionId", types.TokenTypeEmailVerify)
-		assert.Equal(t, db.ErrNotFound, err)
+		_, err = underTest.GetTokensBySessionIdAndType(context.Background(), "sessionId", auth_types.TokenTypeEmailVerify)
+		assert.Equal(t, core.ErrNotFound, err)
 	})
 	t.Run("should return ErrAlreadyExists", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		verifiedAt := time.Date(2020, 1, 5, 13, 0, 0, 0, time.UTC)
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
-		user := types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
+		user := auth_types.NewUser(uuid.New(), "some@email.de", true, &verifiedAt, false, []byte("somePass"), []byte("someSalt"), createAt)
 
 		err := underTest.InsertUser(context.Background(), user)
 		require.NoError(t, err)
 
 		err = underTest.InsertUser(context.Background(), user)
-		assert.Equal(t, db.ErrAlreadyExists, err)
+		assert.Equal(t, core.ErrAlreadyExists, err)
 	})
 	t.Run("should return ErrInternal on missing NOT NULL fields", func(t *testing.T) {
 		t.Parallel()
 		d := setupDb(t)
 
-		underTest := db.NewAuthSqlite(d)
+		underTest := authentication.NewDbSqlite(d)
 
 		createAt := time.Date(2020, 1, 5, 12, 0, 0, 0, time.UTC)
-		user := types.NewUser(uuid.New(), "some@email.de", false, nil, false, []byte("somePass"), nil, createAt)
+		user := auth_types.NewUser(uuid.New(), "some@email.de", false, nil, false, []byte("somePass"), nil, createAt)
 
 		err := underTest.InsertUser(context.Background(), user)
-		assert.Equal(t, types.ErrInternal, err)
+		assert.Equal(t, core.ErrInternal, err)
 	})
 }

test/auth_test.go

@@ -2,9 +2,9 @@ package test_test
 
 import (
 	"context"
-	"spend-sparrow/internal/db"
-	"spend-sparrow/internal/service"
-	"spend-sparrow/internal/types"
+	"spend-sparrow/internal/auth_types"
+	"spend-sparrow/internal/authentication"
+	"spend-sparrow/internal/core"
 	"spend-sparrow/mocks"
 	"strings"
 	"testing"
@@ -17,7 +17,7 @@ import (
 )
 
 var (
-	settings = types.Settings{
+	settings = core.Settings{
 		Port:        "",
 		BaseUrl:     "",
 		Environment: "test",
@@ -30,26 +30,26 @@ func TestSignUp(t *testing.T) {
 	t.Run("should check for correct email address", func(t *testing.T) {
 		t.Parallel()
 
-		mockAuthDb := mocks.NewMockAuth(t)
+		mockAuthDb := mocks.NewMockDb(t)
 		mockRandom := mocks.NewMockRandom(t)
 		mockClock := mocks.NewMockClock(t)
 		mockMail := mocks.NewMockMail(t)
 
-		underTest := service.NewAuth(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
+		underTest := authentication.NewService(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
 
 		_, err := underTest.SignUp(context.Background(), "invalid email address", "SomeStrongPassword123!")
 
-		assert.Equal(t, service.ErrInvalidEmail, err)
+		assert.Equal(t, authentication.ErrInvalidEmail, err)
 	})
 	t.Run("should check for password complexity", func(t *testing.T) {
 		t.Parallel()
 
-		mockAuthDb := mocks.NewMockAuth(t)
+		mockAuthDb := mocks.NewMockDb(t)
 		mockRandom := mocks.NewMockRandom(t)
 		mockClock := mocks.NewMockClock(t)
 		mockMail := mocks.NewMockMail(t)
 
-		underTest := service.NewAuth(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
+		underTest := authentication.NewService(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
 
 		weakPasswords := []string{
 			"123!ab", // too short
@@ -60,13 +60,13 @@ func TestSignUp(t *testing.T) {
 
 		for _, password := range weakPasswords {
 			_, err := underTest.SignUp(context.Background(), "some@valid.email", password)
-			assert.Equal(t, service.ErrInvalidPassword, err)
+			assert.Equal(t, authentication.ErrInvalidPassword, err)
 		}
 	})
 	t.Run("should signup correctly", func(t *testing.T) {
 		t.Parallel()
 
-		mockAuthDb := mocks.NewMockAuth(t)
+		mockAuthDb := mocks.NewMockDb(t)
 		mockRandom := mocks.NewMockRandom(t)
 		mockClock := mocks.NewMockClock(t)
 		mockMail := mocks.NewMockMail(t)
@@ -77,7 +77,7 @@ func TestSignUp(t *testing.T) {
 		salt := []byte("salt")
 		createTime := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
 
-		expected := types.NewUser(userId, email, false, nil, false, service.GetHashPassword(password, salt), salt, createTime)
+		expected := auth_types.NewUser(userId, email, false, nil, false, authentication.GetHashPassword(password, salt), salt, createTime)
 
 		ctx := context.Background()
 
@@ -86,7 +86,7 @@ func TestSignUp(t *testing.T) {
 		mockClock.EXPECT().Now().Return(createTime)
 		mockAuthDb.EXPECT().InsertUser(context.Background(), expected).Return(nil)
 
-		underTest := service.NewAuth(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
+		underTest := authentication.NewService(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
 		actual, err := underTest.SignUp(context.Background(), email, password)
 
 		require.NoError(t, err)
@@ -96,7 +96,7 @@ func TestSignUp(t *testing.T) {
 	t.Run("should return ErrAccountExists", func(t *testing.T) {
 		t.Parallel()
 
-		mockAuthDb := mocks.NewMockAuth(t)
+		mockAuthDb := mocks.NewMockDb(t)
 		mockRandom := mocks.NewMockRandom(t)
 		mockClock := mocks.NewMockClock(t)
 		mockMail := mocks.NewMockMail(t)
@@ -106,19 +106,19 @@ func TestSignUp(t *testing.T) {
 		createTime := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
 		password := "SomeStrongPassword123!"
 		salt := []byte("salt")
-		user := types.NewUser(userId, email, false, nil, false, service.GetHashPassword(password, salt), salt, createTime)
+		user := auth_types.NewUser(userId, email, false, nil, false, authentication.GetHashPassword(password, salt), salt, createTime)
 
 		ctx := context.Background()
 		mockRandom.EXPECT().UUID(ctx).Return(user.Id, nil)
 		mockRandom.EXPECT().Bytes(ctx, 16).Return(salt, nil)
 		mockClock.EXPECT().Now().Return(createTime)
 
-		mockAuthDb.EXPECT().InsertUser(context.Background(), user).Return(db.ErrAlreadyExists)
+		mockAuthDb.EXPECT().InsertUser(context.Background(), user).Return(core.ErrAlreadyExists)
 
-		underTest := service.NewAuth(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
+		underTest := authentication.NewService(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
 
 		_, err := underTest.SignUp(context.Background(), user.Email, password)
-		assert.Equal(t, service.ErrAccountExists, err)
+		assert.Equal(t, authentication.ErrAccountExists, err)
 	})
 }
 
@@ -127,30 +127,30 @@ func TestSendVerificationMail(t *testing.T) {
 	t.Run("should use stored token and send mail", func(t *testing.T) {
 		t.Parallel()
 
-		token := types.NewToken(
+		token := auth_types.NewToken(
 			uuid.New(),
 			"sessionId",
 			"someRandomTokenToUse",
-			types.TokenTypeEmailVerify,
+			auth_types.TokenTypeEmailVerify,
 			time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC),
 			time.Date(2020, 1, 2, 0, 0, 0, 0, time.UTC))
-		tokens := []*types.Token{token}
+		tokens := []*auth_types.Token{token}
 
 		email := "some@email.de"
 		userId := uuid.New()
 
-		mockAuthDb := mocks.NewMockAuth(t)
+		mockAuthDb := mocks.NewMockDb(t)
 		mockRandom := mocks.NewMockRandom(t)
 		mockClock := mocks.NewMockClock(t)
 		mockMail := mocks.NewMockMail(t)
 
 		ctx := context.Background()
-		mockAuthDb.EXPECT().GetTokensByUserIdAndType(context.Background(), userId, types.TokenTypeEmailVerify).Return(tokens, nil)
+		mockAuthDb.EXPECT().GetTokensByUserIdAndType(context.Background(), userId, auth_types.TokenTypeEmailVerify).Return(tokens, nil)
 		mockMail.EXPECT().SendMail(ctx, email, "Welcome to spend-sparrow", mock.MatchedBy(func(message string) bool {
 			return strings.Contains(message, token.Token)
 		})).Return()
 
-		underTest := service.NewAuth(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
+		underTest := authentication.NewService(mockAuthDb, mockRandom, mockClock, mockMail, &settings)
 
 		underTest.SendVerificationMail(context.Background(), userId, email)
 	})