kleinTodo/server/handler/errorHandlers.go

package handler

import (
	"log/slog"
	"net/http"
)

func InternalServerErrorHandler(w http.ResponseWriter, err error) {
	setError(w, http.StatusInternalServerError, err.Error())
}

func NotFoundHandler(w http.ResponseWriter) {
	setError(w, http.StatusNotFound, "404 Not Found")
}

func BadRequestHandler(w http.ResponseWriter) {
	setError(w, http.StatusBadRequest, "404 Not Found")
}

func UnprocessableEntityHandler(w http.ResponseWriter, err error) {
	setError(w, http.StatusUnprocessableEntity, err.Error())
}

func UnauthorizedHandler(w http.ResponseWriter) {
	setError(w, http.StatusUnauthorized, "Unauthorized")
}

func NotImplementedHandler(w http.ResponseWriter) {
	setError(w, http.StatusNotImplemented, "WORK IN PROGRESS")
}

func setError(w http.ResponseWriter, httpStatus int, errorMessage string) {
	w.WriteHeader(httpStatus)
	if _, err := w.Write([]byte(errorMessage)); err != nil {
		slog.Error(err.Error())
	}
	return
}

func handleError(w http.ResponseWriter, status int, err error) bool {
	if err != nil {
		switch status {
		case http.StatusInternalServerError:
			InternalServerErrorHandler(w, err)
		case http.StatusNotFound:
			NotFoundHandler(w)
		case http.StatusBadRequest:
			BadRequestHandler(w)
		case http.StatusUnauthorized:
			UnauthorizedHandler(w)
		case http.StatusNotImplemented:
			NotImplementedHandler(w)
		case http.StatusUnprocessableEntity:
			UnprocessableEntityHandler(w, err)
		default:
			InternalServerErrorHandler(w, err)
		}
		slog.Error(err.Error())
		return true
	}
	return false
}