package handler

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

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

func LoginHandler(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
	}
	password := db.GetFromBucketByKey(common.UserBucket, user.Username)
	if user.ComparePasswords(password) {
		w.Header().Set(common.AuthHeader, jwt.CreateUserJWT(user.Username))
		w.WriteHeader(http.StatusOK)
		if handleError(w, http.StatusInternalServerError, err) {
			return
		}
	} else {
		handleError(w, http.StatusUnauthorized, errors.New("username or password is incorrect"))
		return
	}
}