#1 add authorization with firebase

Co-authored-by: Tim <timwundenberg@outlook.de>
Reviewed-on: tim/me-fit#2

api/.gitignore

@@ -25,3 +25,4 @@ go.work.sum
 .env
 
 *.db
+secrets/

api/go.mod

@@ -3,13 +3,51 @@ module api
 go 1.22.5
 
 require (
+	firebase.google.com/go v3.13.0+incompatible
 	github.com/golang-migrate/migrate/v4 v4.17.1
 	github.com/lib/pq v1.10.9
 	github.com/mattn/go-sqlite3 v1.14.22
+	google.golang.org/api v0.189.0
 )
 
 require (
+	cloud.google.com/go v0.115.0 // indirect
+	cloud.google.com/go/auth v0.7.2 // indirect
+	cloud.google.com/go/auth/oauth2adapt v0.2.3 // indirect
+	cloud.google.com/go/compute/metadata v0.5.0 // indirect
+	cloud.google.com/go/firestore v1.15.0 // indirect
+	cloud.google.com/go/iam v1.1.10 // indirect
+	cloud.google.com/go/longrunning v0.5.9 // indirect
+	cloud.google.com/go/storage v1.41.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect
+	github.com/googleapis/gax-go/v2 v2.12.5 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.49.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.49.0 // indirect
+	go.opentelemetry.io/otel v1.24.0 // indirect
+	go.opentelemetry.io/otel/metric v1.24.0 // indirect
+	go.opentelemetry.io/otel/trace v1.24.0 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
+	golang.org/x/crypto v0.25.0 // indirect
+	golang.org/x/net v0.27.0 // indirect
+	golang.org/x/oauth2 v0.21.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	google.golang.org/appengine v1.6.8 // indirect
+	google.golang.org/genproto v0.0.0-20240722135656-d784300faade // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240722135656-d784300faade // indirect
+	google.golang.org/grpc v1.64.1 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 )

api/go.sum

@@ -1,7 +1,75 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.115.0 h1:CnFSK6Xo3lDYRoBKEcAtia6VSC837/ZkJuRduSFnr14=
+cloud.google.com/go v0.115.0/go.mod h1:8jIM5vVgoAEoiVxQ/O4BFTfHqulPZgs/ufEzMcFMdWU=
+cloud.google.com/go/auth v0.7.2 h1:uiha352VrCDMXg+yoBtaD0tUF4Kv9vrtrWPYXwutnDE=
+cloud.google.com/go/auth v0.7.2/go.mod h1:VEc4p5NNxycWQTMQEDQF0bd6aTMb6VgYDXEwiJJQAbs=
+cloud.google.com/go/auth/oauth2adapt v0.2.3 h1:MlxF+Pd3OmSudg/b1yZ5lJwoXCEaeedAguodky1PcKI=
+cloud.google.com/go/auth/oauth2adapt v0.2.3/go.mod h1:tMQXOfZzFuNuUxOypHlQEXgdfX5cuhwU+ffUuXRJE8I=
+cloud.google.com/go/compute/metadata v0.5.0 h1:Zr0eK8JbFv6+Wi4ilXAR8FJ3wyNdpxHKJNPos6LTZOY=
+cloud.google.com/go/compute/metadata v0.5.0/go.mod h1:aHnloV2TPI38yx4s9+wAZhHykWvVCfu7hQbF+9CWoiY=
+cloud.google.com/go/firestore v1.15.0 h1:/k8ppuWOtNuDHt2tsRV42yI21uaGnKDEQnRFeBpbFF8=
+cloud.google.com/go/firestore v1.15.0/go.mod h1:GWOxFXcv8GZUtYpWHw/w6IuYNux/BtmeVTMmjrm4yhk=
+cloud.google.com/go/iam v1.1.10 h1:ZSAr64oEhQSClwBL670MsJAW5/RLiC6kfw3Bqmd5ZDI=
+cloud.google.com/go/iam v1.1.10/go.mod h1:iEgMq62sg8zx446GCaijmA2Miwg5o3UbO+nI47WHJps=
+cloud.google.com/go/longrunning v0.5.9 h1:haH9pAuXdPAMqHvzX0zlWQigXT7B0+CL4/2nXXdBo5k=
+cloud.google.com/go/longrunning v0.5.9/go.mod h1:HD+0l9/OOW0za6UWdKJtXoFAX/BGg/3Wj8p10NeWF7c=
+cloud.google.com/go/storage v1.41.0 h1:RusiwatSu6lHeEXe3kglxakAmAbfV+rhtPqA6i8RBx0=
+cloud.google.com/go/storage v1.41.0/go.mod h1:J1WCa/Z2FcgdEDuPUY8DxT5I+d9mFKsCepp5vR6Sq80=
+firebase.google.com/go v3.13.0+incompatible h1:3TdYC3DDi6aHn20qoRkxwGqNgdjtblwVAyRLQwGn/+4=
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 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
+github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
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+github.com/googleapis/enterprise-certificate-proxy v0.3.2/go.mod h1:VLSiSSBs/ksPL8kq3OBOQ6WRI2QnaFynd1DCjZ62+V0=
+github.com/googleapis/gax-go/v2 v2.12.5 h1:8gw9KZK8TiVKB6q3zHY3SBzLnrGp6HQjyfYBYGmXdxA=
+github.com/googleapis/gax-go/v2 v2.12.5/go.mod h1:BUDKcWo+RaKq5SC9vVYL0wLADa3VcfswbOMMRmB9H3E=
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@@ -12,7 +80,125 @@ github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
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api/main.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"net/http"
 
+	"firebase.google.com/go/auth"
 	_ "github.com/mattn/go-sqlite3"
 )
 
@@ -37,7 +38,7 @@ func main() {
 
 	var server = http.Server{
 		Addr:    ":8080",
-		Handler: middleware.Logging(router),
+		Handler: middleware.Logging(middleware.EnsureAuth(router)),
 	}
 	log.Println("Starting server at", server.Addr)
 
@@ -48,6 +49,9 @@ func main() {
 }
 
 func (ctx *Context) HelloWorld(w http.ResponseWriter, r *http.Request) {
+	token := r.Context().Value(middleware.TOKEN_KEY).(*auth.Token)
+	log.Println(token.UID)
+
 	sqlStmt := `select COUNT(*) from person;`
 
 	result, err := ctx.DB.Query(sqlStmt)

api/middleware/auth.go

@@ -0,0 +1,28 @@
+package middleware
+
+import (
+	"api/utils"
+	"context"
+	"net/http"
+)
+
+type ContextKey string
+
+const TOKEN_KEY ContextKey = "token"
+
+func EnsureAuth(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		tokenStr := r.Header.Get("Authorization")
+		tokenStr = tokenStr[len("Bearer "):]
+
+		token, err := utils.VerifyToken(tokenStr)
+		if err != nil {
+			http.Error(w, "Unauthorized", http.StatusUnauthorized)
+			return
+		}
+
+		var newContext = context.WithValue(r.Context(), TOKEN_KEY, token)
+
+		next.ServeHTTP(w, r.WithContext(newContext))
+	})
+}

api/utils/auth.go

@@ -0,0 +1,36 @@
+package utils
+
+import (
+	"context"
+	"log"
+
+	firebase "firebase.google.com/go"
+	"firebase.google.com/go/auth"
+	"google.golang.org/api/option"
+)
+
+var app *firebase.App
+
+func VerifyToken(token string) (*auth.Token, error) {
+	if app == nil {
+		setup()
+	}
+
+	client, err := app.Auth(context.Background())
+	if err != nil {
+		log.Fatalf("error getting Auth client: %v\n", err)
+	}
+	return client.VerifyIDToken(context.Background(), token)
+}
+
+func setup() {
+	opt := option.WithCredentialsFile("./secrets/me-fit-a9365-firebase-adminsdk-8065w-7cf8443902.json")
+
+	firebaseApp, err := firebase.NewApp(context.Background(), nil, opt)
+
+	if err != nil {
+		log.Fatalf("error initializing app: %v", err)
+	}
+
+	app = firebaseApp
+}

view/package.json

@@ -22,6 +22,7 @@
 		"eslint": "^9.0.0",
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.36.0",
+		"firebaseui": "^6.1.0",
 		"globals": "^15.0.0",
 		"postcss": "^8.4.40",
 		"prettier": "^3.1.1",

view/src/lib/firebase.ts

@@ -0,0 +1,16 @@
+
+import { getAuth } from 'firebase/auth';
+import { initializeApp } from 'firebase/app';
+
+const app = initializeApp({
+	apiKey: 'AIzaSyCrJBW3c3Wut8DqjyVJoFAEyJ9Had__q-Q',
+	authDomain: 'me-fit-a9365.firebaseapp.com',
+	projectId: 'me-fit-a9365',
+	storageBucket: 'me-fit-a9365.appspot.com',
+	messagingSenderId: '631045688520',
+	appId: '1:631045688520:web:c7e0534927b52b0db629fd'
+});
+
+const auth = getAuth(app);
+
+export { auth };

view/src/routes/+layout.svelte

@@ -1,6 +1,44 @@
 <script lang="ts">
 	import '../app.css';
+	import { onDestroy, onMount } from 'svelte';
+	import type { Auth, User } from 'firebase/auth';
+
+	var auth: Auth | null = null;
+	var user: User | null = null;
+	var unsub: (() => void) | null = null;
+
+	onMount(async () => {
+		const { auth: _auth } = await import('../lib/firebase');
+		auth = _auth;
+		user = auth.currentUser;
+		unsub = auth.onAuthStateChanged((newUser) => {
+			user = newUser;
+		});
+	});
+
+	onDestroy(() => {
+		if (unsub) {
+			unsub();
+		}
+	});
+
+	const signOut = async () => {
+		try {
+			await (auth as Auth).signOut();
+		} catch (error) {
+			console.error(error);
+		}
+	};
 </script>
 
-<p class="text-9xl text-red-950">Tailwind working</p>
+<div class="flex justify-end items-center min-h-10 gap-10 py-1 px-10 border-b border-accent">
+	<a href="/" class="flex-1">ME-FIT</a>
+	{#if user}
+		<p>{user?.email}</p>
+		<button class="btn" on:click={async () => signOut()}>Logout</button>
+	{:else}
+		<a href="/login" class="btn">Login</a>
+	{/if}
+</div>
+
 <slot></slot>

view/src/routes/+page.svelte

@@ -1,2 +1,3 @@
-<h1>Welcome to SvelteKit</h1>
+<div class="flex h-svh justify-center items-center">
-<p>Visit <a href="https://kit.svelte.dev">kit.svelte.dev</a> to read the documentation</p>
+	<h1 class="text-9xl text-primary-content">Welcome to ME-FIT</h1>
+</div>

view/src/routes/login/+page.svelte

@@ -0,0 +1,65 @@
+<script lang="ts">
+	import { goto } from '$app/navigation';
+	import { signInWithEmailAndPassword } from 'firebase/auth';
+
+	var errorStr: string | null = null;
+
+	const signIn = async (event: SubmitEvent) => {
+		errorStr = null;
+		const { auth } = await import('$lib/firebase');
+
+		try {
+			const data = new FormData(event.target as HTMLFormElement);
+			await signInWithEmailAndPassword(
+				auth,
+				data.get('email') as string,
+				data.get('password') as string
+			);
+
+			goto('/');
+		} catch (error: any) {
+			errorStr = error.code ? error.code : error.message;
+		}
+	};
+</script>
+
+<form class="max-w-xl mx-auto flex flex-col gap-4" on:submit|preventDefault={signIn}>
+	<h2 class="text-6xl mb-10">Login</h2>
+	<label class="input input-bordered flex items-center gap-2">
+		<svg
+			xmlns="http://www.w3.org/2000/svg"
+			viewBox="0 0 16 16"
+			fill="currentColor"
+			class="h-4 w-4 opacity-70"
+		>
+			<path
+				d="M2.5 3A1.5 1.5 0 0 0 1 4.5v.793c.026.009.051.02.076.032L7.674 8.51c.206.1.446.1.652 0l6.598-3.185A.755.755 0 0 1 15 5.293V4.5A1.5 1.5 0 0 0 13.5 3h-11Z"
+			/>
+			<path
+				d="M15 6.954 8.978 9.86a2.25 2.25 0 0 1-1.956 0L1 6.954V11.5A1.5 1.5 0 0 0 2.5 13h11a1.5 1.5 0 0 0 1.5-1.5V6.954Z"
+			/>
+		</svg>
+		<input type="text" class="grow" placeholder="Email" name="email" />
+	</label>
+	<label class="input input-bordered flex items-center gap-2">
+		<svg
+			xmlns="http://www.w3.org/2000/svg"
+			viewBox="0 0 16 16"
+			fill="currentColor"
+			class="h-4 w-4 opacity-70"
+		>
+			<path
+				fill-rule="evenodd"
+				d="M14 6a4 4 0 0 1-4.899 3.899l-1.955 1.955a.5.5 0 0 1-.353.146H5v1.5a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1-.5-.5v-2.293a.5.5 0 0 1 .146-.353l3.955-3.955A4 4 0 1 1 14 6Zm-4-2a.75.75 0 0 0 0 1.5.5.5 0 0 1 .5.5.75.75 0 0 0 1.5 0 2 2 0 0 0-2-2Z"
+				clip-rule="evenodd"
+			/>
+		</svg>
+		<input type="password" class="grow" placeholder="Password" name="password" />
+	</label>
+
+	<button class="btn btn-primary self-end">Login</button>
+
+	{#if errorStr}
+		<p class="text-red-500">{errorStr}</p>
+	{/if}
+</form>