kleinTodo/server/handler/registerHandler.go

package handler

import (
	"encoding/json"
	"log"
	"net/http"

	"gitea.kleinsense.nl/DariusKlein/kleinTodo/common"
)

func RegisterHandler(w http.ResponseWriter, r *http.Request) {
	var user common.Credentials
	// Decode input
	err := json.NewDecoder(r.Body).Decode(&user)
	if handleError(w, http.StatusInternalServerError, err) {
		return
	}
	// Get data store
	db, err := common.GetTodoDataStore()
	if handleError(w, http.StatusInternalServerError, err) {
		return
	}
	// Check if user exists
	if exists, err := db.ExistsByKey(common.UserBucket, user.Username); exists || err != nil {
		log.Println(err.Error())
		w.WriteHeader(http.StatusUnprocessableEntity)
		w.Write([]byte(`{"error":"user already exists"}`))
		return
	}
	// Hash password
	password, err := user.HashedPassword()
	if handleError(w, http.StatusBadRequest, err) {
		return
	}
	// Store user
	err = db.SaveValueToBucket(common.UserBucket, user.Username, password)
	if handleError(w, http.StatusInternalServerError, err) {
		return
	}
}