fix: fix reset of entries when switching between weeks

backend/database.go

@@ -59,7 +59,6 @@ func createTables(db *sql.DB) {
 		}
 	}
 
-	// Create default admin user (password: admin123)
 	hash, _ := bcrypt.GenerateFromPassword([]byte("admin123"), bcrypt.DefaultCost)
 	_, err := db.Exec(`
     INSERT OR IGNORE INTO users (id, username, password, is_admin)
@@ -140,15 +139,14 @@ func CreateTimeEntry(db *sql.DB, entry *TimeEntry) error {
 	return err
 }
 
-// func CreateTimeEntry(db *sql.DB, entry *TimeEntry) error {
-// 	_, err := db.Exec("INSERT INTO time_entries (user_id, schedule_id, date, type) VALUES (?, ?, ?, ?)",
-// 		entry.UserID, entry.ScheduleID, entry.Date, entry.Type)
-// 	return err
-// }
-
 func GetTimeEntriesByUser(db *sql.DB, userID int) ([]TimeEntry, error) {
-	rows, err := db.Query("SELECT id, user_id, schedule_id, date, type, created_at FROM time_entries WHERE user_id = ? ORDER BY date DESC, created_at DESC",
-		userID)
+	rows, err := db.Query(`
+        SELECT te.id, te.user_id, te.schedule_id, te.date, te.type, te.start_time, te.end_time, te.created_at, u.username 
+        FROM time_entries te
+        JOIN users u ON te.user_id = u.id
+        WHERE te.user_id = ? 
+        ORDER BY te.date DESC, te.created_at DESC
+    `, userID)
 	if err != nil {
 		return nil, err
 	}
@@ -157,7 +155,7 @@ func GetTimeEntriesByUser(db *sql.DB, userID int) ([]TimeEntry, error) {
 	var entries []TimeEntry
 	for rows.Next() {
 		var e TimeEntry
-		if err := rows.Scan(&e.ID, &e.UserID, &e.ScheduleID, &e.Date, &e.Type, &e.CreatedAt); err != nil {
+		if err := rows.Scan(&e.ID, &e.UserID, &e.ScheduleID, &e.Date, &e.Type, &e.StartTime, &e.EndTime, &e.CreatedAt, &e.Username); err != nil {
 			continue
 		}
 		entries = append(entries, e)
@@ -188,30 +186,22 @@ func GetAllTimeEntries(db *sql.DB) ([]TimeEntry, error) {
 	return entries, nil
 }
 
-// func GetAllTimeEntries(db *sql.DB) ([]TimeEntry, error) {
-// 	rows, err := db.Query("SELECT id, user_id, schedule_id, date, type, created_at FROM time_entries ORDER BY date DESC, created_at DESC")
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	defer rows.Close()
-
-//		var entries []TimeEntry
-//		for rows.Next() {
-//			var e TimeEntry
-//			if err := rows.Scan(&e.ID, &e.UserID, &e.ScheduleID, &e.Date, &e.Type, &e.CreatedAt); err != nil {
-//				continue
-//			}
-//			entries = append(entries, e)
-//		}
-//		return entries, nil
-//	}
 func GetWeeklyHours(db *sql.DB) ([]WeeklyHours, error) {
 	rows, err := db.Query(`
         SELECT 
             te.user_id,
             u.username,
-            CAST(strftime('%W', te.date) AS INTEGER) as week,
-            CAST(strftime('%Y', te.date) AS INTEGER) as year,
+            -- ISO 8601 Wochennummer berechnen
+            CASE 
+                WHEN strftime('%j', date(te.date, '-' || ((strftime('%w', te.date) + 6) % 7) || ' days')) <= '3' 
+                THEN CAST(strftime('%Y', date(te.date, '-' || ((strftime('%w', te.date) + 6) % 7) || ' days', '-4 days')) AS INTEGER)
+                ELSE CAST(strftime('%Y', te.date) AS INTEGER)
+            END as year,
+            CASE 
+                WHEN strftime('%j', date(te.date, '-' || ((strftime('%w', te.date) + 6) % 7) || ' days')) <= '3'
+                THEN CAST((strftime('%j', date(te.date, '-' || ((strftime('%w', te.date) + 6) % 7) || ' days', '-4 days')) - 1) / 7 AS INTEGER) + 53
+                ELSE CAST((strftime('%j', date(te.date, '-' || ((strftime('%w', te.date) + 6) % 7) || ' days')) - 1) / 7 AS INTEGER) + 1
+            END as week,
             SUM(
                 (CAST(substr(te.end_time, 1, 2) AS REAL) + CAST(substr(te.end_time, 4, 2) AS REAL) / 60.0) -
                 (CAST(substr(te.start_time, 1, 2) AS REAL) + CAST(substr(te.start_time, 4, 2) AS REAL) / 60.0)
@@ -229,7 +219,7 @@ func GetWeeklyHours(db *sql.DB) ([]WeeklyHours, error) {
 	var hours []WeeklyHours
 	for rows.Next() {
 		var h WeeklyHours
-		if err := rows.Scan(&h.UserID, &h.Username, &h.Week, &h.Year, &h.TotalHours); err != nil {
+		if err := rows.Scan(&h.UserID, &h.Username, &h.Year, &h.Week, &h.TotalHours); err != nil {
 			continue
 		}
 		hours = append(hours, h)
@@ -246,27 +236,30 @@ func DeleteUser(db *sql.DB, id int) error {
 }
 
 func DeleteTimeEntriesByUserAndWeek(db *sql.DB, userID int, year int, week int) error {
+	dates := calculateWeekDates(year, week)
+
+	var dateList []string
+	for day := 0; day <= 4; day++ {
+		dateList = append(dateList, dates.Dates[fmt.Sprintf("%d", day)])
+	}
+
 	query := `
         DELETE FROM time_entries 
         WHERE user_id = ? 
-		AND CAST(strftime('%W', date) AS INTEGER) = ? 
-		AND CAST(strftime('%Y', date) AS INTEGER) = ?
+        AND date IN (?, ?, ?, ?, ?)
     `
-	_, err := db.Exec(query, userID, week, year)
+	_, err := db.Exec(query, userID, dateList[0], dateList[1], dateList[2], dateList[3], dateList[4])
 	return err
 }
 
 func CheckUserHasEntriesForWeek(db *sql.DB, userID int, year int, week int) (bool, error) {
-	// Berechne die Daten der Woche
 	dates := calculateWeekDates(year, week)
 
-	// Hole alle Daten als Liste
 	var dateList []string
-	for _, date := range dates.Dates {
-		dateList = append(dateList, date)
+	for day := 0; day <= 4; day++ {
+		dateList = append(dateList, dates.Dates[fmt.Sprintf("%d", day)])
 	}
 
-	// Prüfe ob Einträge existieren
 	query := `
         SELECT COUNT(*) 
         FROM time_entries 
@@ -279,6 +272,7 @@ func CheckUserHasEntriesForWeek(db *sql.DB, userID int, year int, week int) (boo
 		dateList[0], dateList[1], dateList[2], dateList[3], dateList[4]).Scan(&count)
 
 	if err != nil {
+		log.Printf("Error checking entries: %v", err)
 		return false, err
 	}
 

backend/handlers.go

@@ -148,7 +148,6 @@ func (app *App) GetMyTimeEntriesHandler(c echo.Context) error {
 	return c.JSON(http.StatusOK, entries)
 }
 
-// GetWeekDates - Gibt die Daten einer Woche zurück (Montag-Freitag)
 func (app *App) GetWeekDates(c echo.Context) error {
 	year, err := strconv.Atoi(c.QueryParam("year"))
 	if err != nil {
@@ -164,7 +163,6 @@ func (app *App) GetWeekDates(c echo.Context) error {
 	return c.JSON(http.StatusOK, dates)
 }
 
-// CheckWeekHasEntries - Prüft ob User Einträge für eine Woche hat
 func (app *App) CheckWeekHasEntries(c echo.Context) error {
 	userID := c.Get("user_id").(int)
 
@@ -225,28 +223,24 @@ func (app *App) DeleteWeekEntries(c echo.Context) error {
 type WeekDates struct {
 	Year  int               `json:"year"`
 	Week  int               `json:"week"`
-	Dates map[string]string `json:"dates"` // dayOfWeek -> date
-	Range string            `json:"range"` // "2025-11-03 bis 2025-11-07"
+	Dates map[string]string `json:"dates"`
+	Range string            `json:"range"`
 }
 
 func calculateWeekDates(year, week int) WeekDates {
-	// ISO 8601: Woche 1 ist die Woche mit dem ersten Donnerstag
-	// Finde den ersten Donnerstag des Jahres
 	jan4 := time.Date(year, time.January, 4, 0, 0, 0, 0, time.UTC)
 
-	// Finde Montag der Woche 1
 	weekday := int(jan4.Weekday())
 	if weekday == 0 {
-		weekday = 7 // Sonntag -> 7
+		weekday = 7
 	}
 	daysToMonday := weekday - 1
 	mondayWeek1 := jan4.AddDate(0, 0, -daysToMonday)
 
-	// Berechne Montag der gewünschten Woche
 	targetMonday := mondayWeek1.AddDate(0, 0, (week-1)*7)
 
 	dates := make(map[string]string)
-	weekDays := []string{"0", "1", "2", "3", "4"} // Montag bis Freitag
+	weekDays := []string{"0", "1", "2", "3", "4"}
 
 	var firstDate, lastDate time.Time
 	for i, day := range weekDays {
@@ -270,3 +264,47 @@ func calculateWeekDates(year, week int) WeekDates {
 		Range: rangeStr,
 	}
 }
+
+type BatchTimeEntryRequest struct {
+	Entries []struct {
+		ScheduleID int    `json:"schedule_id"`
+		Date       string `json:"date"`
+		Type       string `json:"type"`
+		StartTime  string `json:"start_time"`
+		EndTime    string `json:"end_time"`
+	} `json:"entries"`
+}
+
+func (app *App) CreateBatchTimeEntriesHandler(c echo.Context) error {
+	userID := c.Get("user_id").(int)
+
+	var req BatchTimeEntryRequest
+	if err := c.Bind(&req); err != nil {
+		return echo.NewHTTPError(http.StatusBadRequest, "invalid request")
+	}
+
+	tx, err := app.DB.Begin()
+	if err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "transaction error")
+	}
+	defer tx.Rollback()
+
+	stmt, err := tx.Prepare("INSERT INTO time_entries (user_id, schedule_id, date, type, start_time, end_time) VALUES (?, ?, ?, ?, ?, ?)")
+	if err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "prepare error")
+	}
+	defer stmt.Close()
+
+	for _, entry := range req.Entries {
+		_, err := stmt.Exec(userID, entry.ScheduleID, entry.Date, entry.Type, entry.StartTime, entry.EndTime)
+		if err != nil {
+			return echo.NewHTTPError(http.StatusInternalServerError, "insert error")
+		}
+	}
+
+	if err := tx.Commit(); err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, "commit error")
+	}
+
+	return c.JSON(http.StatusCreated, map[string]string{"message": "entries created"})
+}

backend/main.go

@@ -10,7 +10,6 @@ import (
 )
 
 func main() {
-	// Database Setup
 	dbPath := os.Getenv("DB_PATH")
 	if dbPath == "" {
 		dbPath = "./timetracking.db"
@@ -21,10 +20,8 @@ func main() {
 
 	app := &App{DB: db}
 
-	// Echo instance
 	e := echo.New()
 
-	// Middleware
 	e.Use(middleware.Logger())
 	e.Use(middleware.Recover())
 	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
@@ -33,25 +30,22 @@ func main() {
 		AllowHeaders: []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAccept, echo.HeaderAuthorization},
 	}))
 
-	// Custom error handler
 	e.HTTPErrorHandler = customHTTPErrorHandler
 
-	// Public routes
 	e.POST("/api/login", app.LoginHandler)
 
-	// Protected routes group
 	protected := e.Group("/api")
 	protected.Use(JWTMiddleware())
 	{
 		protected.GET("/schedules", app.GetSchedulesHandler)
 		protected.POST("/time-entries", app.CreateTimeEntryHandler)
 		protected.GET("/my-time-entries", app.GetMyTimeEntriesHandler)
+		protected.POST("/time-entries/batch", app.CreateBatchTimeEntriesHandler)
 		protected.DELETE("/my-time-entries/week", app.DeleteWeekEntries)
-		protected.GET("/week-dates", app.GetWeekDates)              // NEU
-		protected.GET("/week-has-entries", app.CheckWeekHasEntries) // NEU
+		protected.GET("/week-dates", app.GetWeekDates)
+		protected.GET("/week-has-entries", app.CheckWeekHasEntries)
 	}
 
-	// Admin routes group
 	admin := e.Group("/api/admin")
 	admin.Use(JWTMiddleware())
 	admin.Use(AdminMiddleware())
@@ -65,10 +59,8 @@ func main() {
 		admin.GET("/weekly-hours", app.GetWeeklyHoursHandler)
 	}
 
-	// Static files
 	e.Static("/", "./static")
 
-	// Start server
 	port := os.Getenv("PORT")
 	if port == "" {
 		port = "8080"
@@ -78,7 +70,6 @@ func main() {
 	e.Logger.Fatal(e.Start(":" + port))
 }
 
-// Custom error handler for better error responses
 func customHTTPErrorHandler(err error, c echo.Context) {
 	code := http.StatusInternalServerError
 	message := "Internal Server Error"
@@ -88,7 +79,6 @@ func customHTTPErrorHandler(err error, c echo.Context) {
 		message = he.Message.(string)
 	}
 
-	// Don't override response if already written
 	if !c.Response().Committed {
 		if c.Request().Method == http.MethodHead {
 			c.NoContent(code)

backend/middleware.go

@@ -16,7 +16,6 @@ import (
 
 var jwtSecret = []byte("your-secret-key-change-in-production")
 
-// JWT Token Funktionen (bleiben gleich)
 func createToken(userID int, username string, isAdmin bool) (string, error) {
 	claims := Claims{
 		UserID:   userID,
@@ -26,8 +25,7 @@ func createToken(userID int, username string, isAdmin bool) (string, error) {
 
 	header := base64.RawURLEncoding.EncodeToString([]byte(`{"alg":"HS256","typ":"JWT"}`))
 
-	// Füge Expiration hinzu
-	claimsWithExp := map[string]interface{}{
+	claimsWithExp := map[string]any{
 		"user_id":  claims.UserID,
 		"username": claims.Username,
 		"is_admin": claims.IsAdmin,
@@ -66,12 +64,11 @@ func verifyToken(tokenString string) (*Claims, error) {
 		return nil, err
 	}
 
-	var claimsMap map[string]interface{}
+	var claimsMap map[string]any
 	if err := json.Unmarshal(payload, &claimsMap); err != nil {
 		return nil, err
 	}
 
-	// Check expiration
 	if exp, ok := claimsMap["exp"].(float64); ok {
 		if time.Now().Unix() > int64(exp) {
 			return nil, fmt.Errorf("token expired")
@@ -87,7 +84,6 @@ func verifyToken(tokenString string) (*Claims, error) {
 	return claims, nil
 }
 
-// Echo JWT Middleware
 func JWTMiddleware() echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -102,17 +98,17 @@ func JWTMiddleware() echo.MiddlewareFunc {
 				return echo.NewHTTPError(http.StatusUnauthorized, "invalid token")
 			}
 
-			// Store claims in context
 			c.Set("user_id", claims.UserID)
 			c.Set("username", claims.Username)
 			c.Set("is_admin", claims.IsAdmin)
 
+			c.Logger().Infof("Authenticated user: ID=%d, Username=%s", claims.UserID, claims.Username)
+
 			return next(c)
 		}
 	}
 }
 
-// Admin Middleware
 func AdminMiddleware() echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -125,7 +121,6 @@ func AdminMiddleware() echo.MiddlewareFunc {
 	}
 }
 
-// Custom Logger Middleware (optional - Echo hat bereits einen)
 func CustomLogger() echo.MiddlewareFunc {
 	return middleware.LoggerWithConfig(middleware.LoggerConfig{
 		Format: "${time_rfc3339} | ${status} | ${latency_human} | ${method} ${uri}\n",

frontend/src/Main.elm

@@ -55,28 +55,6 @@ type alias Model =
     , weekEditMode : Bool
     , hasEntriesForCurrentWeek : Bool
     }
--- type alias Model =
---     { page : Page
---     , activeTab : AdminTab
---     , username : String
---     , password : String
---     , token : Maybe String
---     , isAdmin : Bool
---     , schedules : List Schedule
---     , users : List User
---     , timeEntries : List TimeEntry
---     , weeklyHours : List WeeklyHours
---     , selectedEntries : List SelectedEntry
---     , currentWeek : Int
---     , currentYear : Int
---     , currentTime : Time.Posix
---     , zone : Time.Zone
---     , newSchedule : NewSchedule
---     , newUser : NewUser
---     , error : Maybe String
---     , weekEditMode : Bool  -- NEU: Edit-Modus für die Woche
---     , hasEntriesForCurrentWeek : Bool  -- NEU: Hat die aktuelle Woche bereits Einträge?
---     }
 
 type Page
     = LoginPage
@@ -144,7 +122,7 @@ type alias NewUser =
 type alias WeekDates =
     { year : Int
     , week : Int
-    , dates : List (String, String)  -- [(dayOfWeek, date)]
+    , dates : List (String, String)
     , range : String
     }
 
@@ -172,33 +150,20 @@ init storedToken =
             , error = Nothing
             , weekEditMode = False
             , hasEntriesForCurrentWeek = False
-            , weekDates = Nothing  -- NEU
+            , weekDates = Nothing
             }
         
         cmd = 
             case storedToken of
                 Just token ->
                     Cmd.batch 
-                        [ Task.perform SetTime Time.now  -- Dies lädt dann automatisch Daten
+                        [ Task.perform SetTime Time.now
                         , fetchSchedules (Just token)
                         ]
                 Nothing ->
                     Task.perform SetTime Time.now
     in
     (model, cmd)
-    --     cmd = 
-    --         case storedToken of
-    --             Just token ->
-    --                 Cmd.batch 
-    --                     [ Task.perform SetTime Time.now
-    --                     , fetchSchedules (Just token)
-    --                     , fetchMyTimeEntries token
-    --                     ]
-    --             Nothing ->
-    --                 Task.perform SetTime Time.now
-    -- in
-    -- (model, cmd)
-
 
 -- UPDATE
 
@@ -216,10 +181,10 @@ type Msg
     | TimeEntriesSaved (Result Http.Error ())
     | PreviousWeek
     | NextWeek
-    | EnableEditMode  -- NEU
-    | DisableEditMode  -- NEU
-    | DeleteWeekEntries  -- NEU
-    | WeekEntriesDeleted (Result Http.Error ())  -- NEU
+    | EnableEditMode
+    | DisableEditMode
+    | DeleteWeekEntries
+    | WeekEntriesDeleted (Result Http.Error ())
     | SwitchTab AdminTab
     | UpdateNewScheduleDay String
     | UpdateNewScheduleStart String
@@ -239,8 +204,8 @@ type Msg
     | UserDeleted (Result Http.Error ())
     | FetchUsers
     | UsersReceived (Result Http.Error (List User))
-    | FetchMyTimeEntries  -- NEU
-    | MyTimeEntriesReceived (Result Http.Error (List TimeEntry))  -- NEU
+    | FetchMyTimeEntries
+    | MyTimeEntriesReceived (Result Http.Error (List TimeEntry))
     | FetchAllTimeEntries
     | AllTimeEntriesReceived (Result Http.Error (List TimeEntry))
     | FetchWeeklyHours
@@ -265,6 +230,8 @@ update msg model =
         LoginResponse (Ok result) ->
             let
                 newPage = if result.isAdmin then AdminDashboard else UserDashboard
+        
+                (year, week) = getISOWeekFromPosix model.currentTime
             in
             ({ model 
                 | token = Just result.token
@@ -275,7 +242,14 @@ update msg model =
              }, Cmd.batch 
                 [ saveToken result.token
                 , fetchSchedules (Just result.token)
-                , if not result.isAdmin then fetchMyTimeEntries result.token else Cmd.none
+                , if not result.isAdmin then 
+                    Cmd.batch 
+                        [ fetchMyTimeEntries result.token
+                        , fetchWeekDates result.token year week
+                        , checkWeekHasEntries result.token year week
+                        ]
+                  else 
+                    Cmd.none
                 ])
 
         LoginResponse (Err _) ->
@@ -290,16 +264,6 @@ update msg model =
                 , password = ""
              }, removeToken ())
 
-        -- SetTime time ->
-        --     let
-        --         (year, week) = getISOWeekFromPosix time
-        --     in
-        --     ({ model 
-        --         | currentTime = time
-        --         , currentWeek = week
-        --         , currentYear = year
-        --      }, Cmd.none)
-
         FetchSchedules ->
             (model, fetchSchedules model.token)
 
@@ -310,7 +274,6 @@ update msg model =
             ({ model | error = Just "Fehler beim Laden des Stundenplans" }, Cmd.none)
 
         ToggleScheduleSelection scheduleId dayOfWeek ->
-            if model.weekEditMode then
             let
                 entry = { scheduleId = scheduleId, dayOfWeek = dayOfWeek }
                 newSelected =
@@ -320,13 +283,12 @@ update msg model =
                         entry :: model.selectedEntries
             in
             ({ model | selectedEntries = newSelected }, Cmd.none)
-            else
-                (model, Cmd.none)
 
         SaveTimeEntries ->
             case model.token of
                 Just token ->
-                    ({ model | error = Nothing }, saveTimeEntriesForWeek token model.selectedEntries model.currentYear model.currentWeek model.schedules)
+                    ({ model | error = Nothing }, 
+                     saveTimeEntriesForWeek token model.selectedEntries model.currentYear model.currentWeek model.schedules model.weekDates)
                 Nothing ->
                     (model, Cmd.none)
 
@@ -412,81 +374,28 @@ update msg model =
         SetTime time ->
             let
                 (year, week) = getISOWeekFromPosix time
+        
+                cmds = case model.token of
+                    Just token ->
+                        if model.page == UserDashboard then
+                            Cmd.batch
+                                [ checkWeekHasEntries token year week
+                                , fetchWeekDates token year week
+                                , fetchMyTimeEntries token
+                                ]
+                        else
+                            Cmd.none
+                    Nothing ->
+                        Cmd.none
             in
             ({ model 
                 | currentTime = time
                 , currentWeek = week
                 , currentYear = year
-             }, case model.token of
-                    Just token ->
-                        Cmd.batch
-                            [ fetchWeekDates token year week
-                            , checkWeekHasEntries token year week
-                            ]
-                    Nothing ->
-                        Cmd.none
-             )
-
-        -- PreviousWeek ->
-        --     let
-        --         (newYear, newWeek) = previousWeek model.currentYear model.currentWeek
-        --     in
-        --     ({ model 
-        --         | currentWeek = newWeek
-        --         , currentYear = newYear
-        --         , selectedEntries = []
-        --         , weekEditMode = False
-        --         , hasEntriesForCurrentWeek = False  -- WICHTIG: Zurücksetzen!
-        --      }, case model.token of
-        --             Just token -> fetchMyTimeEntries token
-        --             Nothing -> Cmd.none
-        --      )
-
-        -- NextWeek ->
-        --     let
-        --         (newYear, newWeek) = nextWeek model.currentYear model.currentWeek
-        --     in
-        --     ({ model 
-        --         | currentWeek = newWeek
-        --         , currentYear = newYear
-        --         , selectedEntries = []
-        --         , weekEditMode = False
-        --         , hasEntriesForCurrentWeek = False  -- WICHTIG: Zurücksetzen!
-        --      }, case model.token of
-        --             Just token -> fetchMyTimeEntries token
-        --             Nothing -> Cmd.none
-        --      )
-        -- PreviousWeek ->
-        --     let
-        --         (newYear, newWeek) = previousWeek model.currentYear model.currentWeek
-        --     in
-        --     ({ model 
-        --         | currentWeek = newWeek
-        --         , currentYear = newYear
-        --         , selectedEntries = []
-        --         , weekEditMode = False
-        --      }, case model.token of
-        --             Just token -> fetchMyTimeEntries token
-        --             Nothing -> Cmd.none
-        --      )
-
-        -- NextWeek ->
-        --     let
-        --         (newYear, newWeek) = nextWeek model.currentYear model.currentWeek
-        --     in
-        --     ({ model 
-        --         | currentWeek = newWeek
-        --         , currentYear = newYear
-        --         , selectedEntries = []
-        --         , weekEditMode = False
-        --      }, case model.token of
-        --             Just token -> fetchMyTimeEntries token
-        --             Nothing -> Cmd.none
-        --      )
+             }, cmds)
 
         EnableEditMode ->
             let
-                -- Lade bestehende Einträge in selectedEntries
                 currentWeekEntries = List.filter 
                     (\e -> 
                         let
@@ -498,7 +407,6 @@ update msg model =
                 
                 preSelectedEntries = List.map
                     (\entry -> 
-                        -- Finde den dayOfWeek aus dem Datum
                         let
                             parts = String.split "-" entry.date
                             year = parts |> List.head |> Maybe.andThen String.toInt |> Maybe.withDefault 2025
@@ -793,55 +701,25 @@ getISOWeek year month day =
     let
         dayOfYear = getDayOfYear year month day
         
-        -- Wochentag des 4. Januar (definiert ISO Woche 1)
         jan4DayOfWeek = getDayOfWeek year 1 4
         
-        -- Tag des Jahres für den Montag von Woche 1
-        -- Der 4. Januar ist immer in Woche 1
         mondayOfWeek1DayOfYear = 4 - jan4DayOfWeek
         
-        -- Berechne die Wochennummer
         weekNum = ((dayOfYear - mondayOfWeek1DayOfYear) // 7) + 1
     in
     if weekNum < 1 then
-        -- Gehört zur letzten Woche des Vorjahres
-        52  -- Vereinfachung: könnte auch 53 sein
+        52
     else if weekNum > 52 then
         let
-            -- Prüfe ob Jahr 53 Wochen hat
             dec31DayOfWeek = getDayOfWeek year 12 31
             jan1DayOfWeek = getDayOfWeek year 1 1
         in
-        -- Jahr hat 53 Wochen wenn 1. Januar ein Donnerstag ist
-        -- oder 31. Dezember ein Donnerstag ist (bei Schaltjahren)
         if jan1DayOfWeek == 3 || (isLeapYear year && jan1DayOfWeek == 2) then
             weekNum
         else
             1
     else
         weekNum
--- -- Korrigierte ISO-8601 Wochenberechnung
--- getISOWeek : Int -> Int -> Int -> Int
--- getISOWeek year month day =
---     let
---         dayOfYear = getDayOfYear year month day
---         jan1DayOfWeek = getDayOfWeek year 1 1
-        
---         -- ISO 8601: Woche beginnt Montag (0), Jahr beginnt mit der Woche die den 4. Januar enthält
---         correction = (jan1DayOfWeek + 6) |> modBy 7  -- Montag = 0
---         weekNumber = (dayOfYear + correction - 1) // 7
---     in
---     if weekNumber == 0 then
---         -- Gehört zur letzten Woche des Vorjahres
---         getISOWeek (year - 1) 12 31
---     else if weekNumber > 52 then
---         let
---             dec31DayOfWeek = getDayOfWeek year 12 31
---         in
---         -- Prüfe ob es Woche 53 ist oder schon Woche 1 des nächsten Jahres
---         if dec31DayOfWeek < 3 then 1 else weekNumber
---     else
---         weekNumber
 
 getDayOfYear : Int -> Int -> Int -> Int
 getDayOfYear year month day =
@@ -855,7 +733,6 @@ isLeapYear : Int -> Bool
 isLeapYear year =
     (modBy 4 year == 0) && ((modBy 100 year /= 0) || (modBy 400 year == 0))
 
--- Korrigierter getDayOfWeek: Montag = 0, Sonntag = 6 (ISO 8601)
 getDayOfWeek : Int -> Int -> Int -> Int
 getDayOfWeek year month day =
     let
@@ -867,28 +744,19 @@ getDayOfWeek year month day =
         j = adjustedYear // 100
         h = (q + ((13 * (m + 1)) // 5) + k + (k // 4) + (j // 4) - (2 * j)) |> modBy 7
     in
-    -- Konvertiere: Zeller gibt Samstag=0, Sonntag=1, ... Freitag=6
-    -- ISO 8601 will: Montag=0, ..., Sonntag=6
     (h + 5) |> modBy 7
 
--- Korrigiertes getDateForWeekDay
 getDateForWeekDay : Int -> Int -> Int -> String
 getDateForWeekDay year week dayOfWeek =
     let
-        -- Finde den 4. Januar (immer in Woche 1 nach ISO 8601)
         jan4DayOfWeek = getDayOfWeek year 1 4
         
-        -- Montag von Woche 1
-        -- Wenn der 4. Januar z.B. ein Mittwoch ist (dayOfWeek=2),
-        -- dann ist Montag 2 Tage früher, also der 2. Januar
         mondayOfWeek1Date = 4 - jan4DayOfWeek
         
-        -- Berechne den Tag: Montag Woche 1 + (Woche - 1) * 7 Tage + Wochentag
         targetDayOfYear = mondayOfWeek1Date + ((week - 1) * 7) + dayOfWeek
         
         (finalYear, finalMonth, finalDay) = 
             if targetDayOfYear < 1 then
-                -- Datum liegt im Vorjahr
                 addDaysToDate (year - 1) 12 31 (targetDayOfYear)
             else
                 addDaysToDate year 1 targetDayOfYear 0
@@ -896,24 +764,6 @@ getDateForWeekDay year week dayOfWeek =
     String.fromInt finalYear ++ "-" ++ 
     String.padLeft 2 '0' (String.fromInt finalMonth) ++ "-" ++ 
     String.padLeft 2 '0' (String.fromInt finalDay)
--- getDateForWeekDay : Int -> Int -> Int -> String
--- getDateForWeekDay year week dayOfWeek =
---     let
---         -- Finde den ersten Montag der ersten ISO-Woche
---         jan4 = { year = year, month = 1, day = 4 }
---         jan4DayOfWeek = getDayOfWeek year 1 4
-        
---         -- Montag der Woche 1 (die Woche mit dem 4. Januar)
---         mondayOfWeek1 = 4 - jan4DayOfWeek
-        
---         -- Berechne Tage vom Jahresbeginn
---         daysFromJan1 = mondayOfWeek1 + (week - 1) * 7 + dayOfWeek
-        
---         (finalYear, finalMonth, finalDay) = addDaysToDate year 1 1 daysFromJan1
---     in
---     String.fromInt finalYear ++ "-" ++ 
---     String.padLeft 2 '0' (String.fromInt finalMonth) ++ "-" ++ 
---     String.padLeft 2 '0' (String.fromInt finalDay)
 
 addDaysToDate : Int -> Int -> Int -> Int -> (Int, Int, Int)
 addDaysToDate startYear startMonth startDay daysToAdd =
@@ -938,7 +788,6 @@ addDaysToDate startYear startMonth startDay daysToAdd =
             if remaining == 0 then
                 (y, m, d)
             else if remaining > 0 then
-                -- Vorwärts zählen
                 let
                     daysInCurrentMonth = daysInMonth m y
                     daysLeftInMonth = daysInCurrentMonth - d
@@ -950,7 +799,6 @@ addDaysToDate startYear startMonth startDay daysToAdd =
                 else
                     helper y (m + 1) 1 (remaining - daysLeftInMonth - 1)
             else
-                -- Rückwärts zählen
                 if d + remaining >= 1 then
                     (y, m, d + remaining)
                 else if m == 1 then
@@ -965,41 +813,6 @@ addDaysToDate startYear startMonth startDay daysToAdd =
                     helper y (m - 1) prevMonthDays (remaining + d)
     in
     helper startYear startMonth startDay daysToAdd
--- addDaysToDate : Int -> Int -> Int -> Int -> (Int, Int, Int)
--- addDaysToDate year month day daysToAdd =
---     let
---         daysInMonth m y = 
---             case m of
---                 1 -> 31
---                 2 -> if isLeapYear y then 29 else 28
---                 3 -> 31
---                 4 -> 30
---                 5 -> 31
---                 6 -> 30
---                 7 -> 31
---                 8 -> 31
---                 9 -> 30
---                 10 -> 31
---                 11 -> 30
---                 12 -> 31
---                 _ -> 0
-        
---         helper y m d remaining =
---             if remaining <= 0 then
---                 (y, m, d)
---             else
---                 let
---                     daysInCurrentMonth = daysInMonth m y
---                     daysLeftInMonth = daysInCurrentMonth - d + 1
---                 in
---                 if remaining < daysLeftInMonth then
---                     (y, m, d + remaining)
---                 else if m == 12 then
---                     helper (y + 1) 1 1 (remaining - daysLeftInMonth)
---                 else
---                     helper y (m + 1) 1 (remaining - daysLeftInMonth)
---     in
---     helper year month day daysToAdd
 
 previousWeek : Int -> Int -> (Int, Int)
 previousWeek year week =
@@ -1143,7 +956,6 @@ viewUserDashboard model =
                 [ viewWeekNavigation model
                 , h2 [ class "title" ] [ text "Stundenplan" ]
                 
-                -- Status-Anzeige und Bearbeiten-Button
                 , if model.hasEntriesForCurrentWeek && not model.weekEditMode then
                     div [ class "notification is-success" ]
                         [ div [ class "level" ]
@@ -1193,8 +1005,7 @@ viewUserDashboard model =
                         [ text "Wählen Sie die Zeiten aus, die Sie in dieser Woche gearbeitet haben." ]
 
                 , viewScheduleGridWithWeek model
-                
-                , if model.weekEditMode || not model.hasEntriesForCurrentWeek then
+                , if not model.hasEntriesForCurrentWeek || model.weekEditMode then
                     div [ class "field mt-4" ]
                         [ div [ class "control" ]
                             [ button 
@@ -1322,39 +1133,6 @@ viewWeekNavigation model =
                 ]
             ]
         ]
--- viewWeekNavigation : Model -> Html Msg
--- viewWeekNavigation model =
---     div [ class "box" ]
---         [ nav [ class "level" ]
---             [ div [ class "level-left" ]
---                 [ div [ class "level-item" ]
---                     [ button 
---                         [ class "button is-primary"
---                         , onClick PreviousWeek
---                         ]
---                         [ text "← Vorherige Woche" ]
---                     ]
---                 ]
---             , div [ class "level-item has-text-centered" ]
---                 [ div []
---                     [ p [ class "heading" ] [ text "Kalenderwoche" ]
---                     , p [ class "title" ] 
---                         [ text ("KW " ++ String.fromInt model.currentWeek ++ " / " ++ String.fromInt model.currentYear) ]
---                     , p [ class "subtitle is-6" ] 
---                         [ text (getWeekDateRange model.currentYear model.currentWeek) ]
---                     ]
---                 ]
---             , div [ class "level-right" ]
---                 [ div [ class "level-item" ]
---                     [ button 
---                         [ class "button is-primary"
---                         , onClick NextWeek
---                         ]
---                         [ text "Nächste Woche →" ]
---                     ]
---                 ]
---             ]
---         ]
 
 viewScheduleGridWithWeek : Model -> Html Msg
 viewScheduleGridWithWeek model =
@@ -1397,41 +1175,28 @@ viewDayColumnWithWeek model (dayOfWeek, schedules) =
             [ text dateForDay ]
         , div [] (List.map (viewScheduleItemWithDay model dayOfWeek) schedules)
         ]
--- viewDayColumnWithWeek : Model -> (Int, List Schedule) -> Html Msg
--- viewDayColumnWithWeek model (dayOfWeek, schedules) =
---     let
---         dateForDay = getDateForWeekDay model.currentYear model.currentWeek dayOfWeek
---     in
---     td [ class "has-background-light", style "vertical-align" "top", style "min-width" "150px" ]
---         [ p [ class "has-text-centered has-text-weight-bold is-size-7 mb-2" ] 
---             [ text dateForDay ]
---         , div [] (List.map (viewScheduleItemWithDay model dayOfWeek) schedules)
---         ]
 
 viewScheduleItemWithDay : Model -> Int -> Schedule -> Html Msg
 viewScheduleItemWithDay model dayOfWeek schedule =
     let
         isSelected = List.any (\e -> e.scheduleId == schedule.id && e.dayOfWeek == dayOfWeek) model.selectedEntries
         
-        -- Prüfe ob dieser Eintrag bereits in der DB ist (nur relevant wenn Edit-Mode aktiv)
-        isLocked = model.hasEntriesForCurrentWeek && not model.weekEditMode
+        isClickable = not model.hasEntriesForCurrentWeek || model.weekEditMode
         
         boxClass = 
-            if isLocked then
-                if isSelected then "box has-background-success-light" else "box has-background-white"
-            else if isSelected then
+            if isSelected then
                 "box has-background-success-light"
             else
                 "box has-background-white"
         
         typeText = if schedule.scheduleType == "break" then " (Pause)" else ""
         
-        cursorStyle = if isLocked then "not-allowed" else "pointer"
-        opacity = if isLocked && not isSelected then "0.6" else "1"
+        cursorStyle = if isClickable then "pointer" else "not-allowed"
+        opacity = if isClickable || isSelected then "1" else "0.6"
     in
     div 
         [ class boxClass
-        , onClick (if isLocked then Logout else ToggleScheduleSelection schedule.id dayOfWeek)  -- Dummy onClick wenn locked
+        , onClick (if isClickable then ToggleScheduleSelection schedule.id dayOfWeek else CheckWeekHasEntries)  -- Dummy-Event wenn nicht klickbar
         , style "cursor" cursorStyle
         , style "margin-bottom" "0.5rem"
         , style "padding" "0.75rem"
@@ -1443,9 +1208,6 @@ viewScheduleItemWithDay model dayOfWeek schedule =
             [ text (schedule.title ++ typeText) ]
         ]
 
--- (Rest der View-Funktionen bleiben gleich wie in deiner Version)
--- viewScheduleForm, viewScheduleList, viewUserForm, viewUserList, viewWeeklyHoursSummary, viewTimeEntriesList
-
 viewScheduleForm : Model -> Html Msg
 viewScheduleForm model =
     div [ class "box" ]
@@ -1812,42 +1574,50 @@ fetchMyTimeEntries token =
         , tracker = Nothing
         }
 
-saveTimeEntriesForWeek : String -> List SelectedEntry -> Int -> Int -> List Schedule -> Cmd Msg
-saveTimeEntriesForWeek token selectedEntries year week schedules =
+saveTimeEntriesForWeek : String -> List SelectedEntry -> Int -> Int -> List Schedule -> Maybe WeekDates -> Cmd Msg
+saveTimeEntriesForWeek token selectedEntries year week schedules maybeWeekDates =
+    case maybeWeekDates of
+        Nothing ->
+            Cmd.none
+        
+        Just weekDates ->
             let
                 getScheduleById id =
                     List.filter (\s -> s.id == id) schedules |> List.head
                 
-        createRequest entry =
-            case getScheduleById entry.scheduleId of
-                Just schedule ->
-                    let
-                        dateStr = getDateForWeekDay year week entry.dayOfWeek
-                    in
-                    Just <| Http.request
-                        { method = "POST"
-                        , headers = [ Http.header "Authorization" ("Bearer " ++ token) ]
-                        , url = "/api/time-entries"
-                        , body = Http.jsonBody <|
-                            Encode.object
+                getDateForDay dayOfWeek =
+                    weekDates.dates
+                        |> List.filter (\(day, _) -> day == String.fromInt dayOfWeek)
+                        |> List.head
+                        |> Maybe.map Tuple.second
+                
+                createEntryData entry =
+                    case (getScheduleById entry.scheduleId, getDateForDay entry.dayOfWeek) of
+                        (Just schedule, Just dateStr) ->
+                            Just <| Encode.object
                                 [ ("schedule_id", Encode.int entry.scheduleId)
                                 , ("date", Encode.string dateStr)
                                 , ("type", Encode.string schedule.scheduleType)
                                 , ("start_time", Encode.string schedule.startTime)
                                 , ("end_time", Encode.string schedule.endTime)
                                 ]
+                        _ ->
+                            Nothing
+                
+                entriesData = List.filterMap createEntryData selectedEntries
+            in
+            if List.isEmpty entriesData then
+                Cmd.none
+            else
+                Http.request
+                    { method = "POST"
+                    , headers = [ Http.header "Authorization" ("Bearer " ++ token) ]
+                    , url = "/api/time-entries/batch"
+                    , body = Http.jsonBody <| Encode.object [ ("entries", Encode.list identity entriesData) ]
                     , expect = Http.expectWhatever TimeEntriesSaved
                     , timeout = Nothing
                     , tracker = Nothing
                     }
-                Nothing ->
-                    Nothing
-        
-        requests = List.filterMap createRequest selectedEntries
-    in
-    case List.head requests of
-        Just cmd -> cmd
-        Nothing -> Cmd.none
 
 deleteWeekEntries : String -> Int -> Int -> Cmd Msg
 deleteWeekEntries token year week =