feat(transaction): #66 implement transactions

handler/transaction.go

@@ -0,0 +1,138 @@
+package handler
+
+import (
+	"net/http"
+	"spend-sparrow/handler/middleware"
+	"spend-sparrow/service"
+	t "spend-sparrow/template/transaction"
+	"spend-sparrow/types"
+	"spend-sparrow/utils"
+
+	"github.com/a-h/templ"
+)
+
+type Transaction interface {
+	Handle(router *http.ServeMux)
+}
+
+type TransactionImpl struct {
+	s service.Transaction
+	a service.Auth
+	r *Render
+}
+
+func NewTransaction(s service.Transaction, a service.Auth, r *Render) Transaction {
+	return TransactionImpl{
+		s: s,
+		a: a,
+		r: r,
+	}
+}
+
+func (h TransactionImpl) Handle(r *http.ServeMux) {
+	r.Handle("GET /transaction", h.handleTransactionPage())
+	r.Handle("GET /transaction/{id}", h.handleTransactionItemComp())
+	r.Handle("POST /transaction/{id}", h.handleUpdateTransaction())
+	r.Handle("DELETE /transaction/{id}", h.handleDeleteTransaction())
+}
+
+func (h TransactionImpl) handleTransactionPage() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := middleware.GetUser(r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		transactions, err := h.s.GetAll(user)
+		if err != nil {
+			handleError(w, r, err)
+			return
+		}
+
+		comp := t.Transaction(transactions)
+		h.r.RenderLayout(r, w, comp, user)
+	}
+}
+
+func (h TransactionImpl) handleTransactionItemComp() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := middleware.GetUser(r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		id := r.PathValue("id")
+		if id == "new" {
+			comp := t.EditTransaction(nil)
+			h.r.Render(r, w, comp)
+			return
+		}
+
+		transaction, err := h.s.Get(user, id)
+		if err != nil {
+			handleError(w, r, err)
+			return
+		}
+
+		var comp templ.Component
+		if r.URL.Query().Get("edit") == "true" {
+			comp = t.EditTransaction(transaction)
+		} else {
+			comp = t.TransactionItem(transaction)
+		}
+		h.r.Render(r, w, comp)
+	}
+}
+
+func (h TransactionImpl) handleUpdateTransaction() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := middleware.GetUser(r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		var (
+			transaction *types.Transaction
+			err         error
+		)
+		id := r.PathValue("id")
+		name := r.FormValue("name")
+		if id == "new" {
+			transaction, err = h.s.Add(user, name)
+			if err != nil {
+				handleError(w, r, err)
+				return
+			}
+		} else {
+			transaction, err = h.s.Update(user, id, name)
+			if err != nil {
+				handleError(w, r, err)
+				return
+			}
+		}
+
+		comp := t.TransactionItem(transaction)
+		h.r.Render(r, w, comp)
+	}
+}
+
+func (h TransactionImpl) handleDeleteTransaction() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := middleware.GetUser(r)
+		if user == nil {
+			utils.DoRedirect(w, r, "/auth/signin")
+			return
+		}
+
+		id := r.PathValue("id")
+
+		err := h.s.Delete(user, id)
+		if err != nil {
+			handleError(w, r, err)
+			return
+		}
+	}
+}