more refactoring into seperate handlers

backend/stacks/handler.go

@@ -2,8 +2,6 @@ package stacks
 
 import (
 	"database/sql"
-	"encoding/json"
-	"io"
 	"net/http"
 	"os"
 	"screenmark/screenmark/middleware"
@@ -13,45 +11,11 @@ import (
 	"github.com/go-chi/chi/v5"
 )
 
-func writeJsonOrError[K any](logger *log.Logger, object K, w http.ResponseWriter) {
-	jsonObject, err := json.Marshal(object)
-	if err != nil {
-		logger.Warn("could not marshal json object", "err", err)
-		w.WriteHeader(http.StatusBadRequest)
-		return
-	}
-
-	w.Write(jsonObject)
-	w.WriteHeader(http.StatusOK)
-}
-
 type StackHandler struct {
 	logger     *log.Logger
 	stackModel models.ListModel
 }
 
-func withValidatedPost[K any](
-	fn func(request K, w http.ResponseWriter, r *http.Request),
-) func(w http.ResponseWriter, r *http.Request) {
-	return func(w http.ResponseWriter, r *http.Request) {
-		request := new(K)
-
-		body, err := io.ReadAll(r.Body)
-		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-			return
-		}
-
-		err = json.Unmarshal(body, request)
-		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-			return
-		}
-
-		fn(*request, w, r)
-	}
-}
-
 func (h *StackHandler) getAllStacks(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 
@@ -67,7 +31,7 @@ func (h *StackHandler) getAllStacks(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	writeJsonOrError(h.logger, lists, w)
+	middleware.WriteJsonOrError(h.logger, lists, w)
 }
 
 func (h *StackHandler) getStackItems(w http.ResponseWriter, r *http.Request) {
@@ -91,7 +55,7 @@ func (h *StackHandler) getStackItems(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	writeJsonOrError(h.logger, lists, w)
+	middleware.WriteJsonOrError(h.logger, lists, w)
 }
 
 type EditStack struct {
@@ -136,9 +100,8 @@ func (h *StackHandler) CreateRoutes(r chi.Router) {
 		r.Get("/", h.getAllStacks)
 		r.Get("/{listID}", h.getStackItems)
 
-		r.Post("/", withValidatedPost(h.createStack))
-
-		r.Patch("/{listID}", withValidatedPost(h.editStack))
+		r.Post("/", middleware.WithValidatedPost(h.createStack))
+		r.Patch("/{listID}", middleware.WithValidatedPost(h.editStack))
 	})
 }