set template shift struc

backend/src/controllers/shiftPlanController.ts

@@ -308,7 +308,7 @@ async function generateShiftsFromTemplate(shiftPlanId: string, templateId: strin
   const start = new Date(startDate);
   const end = new Date(endDate);
 
-  // Generate shifts for each day in the date range
+  // Generate shifts ONLY for days that have template shifts defined
   for (let date = new Date(start); date <= end; date.setDate(date.getDate() + 1)) {
     // Convert JS day (0=Sunday) to our format (1=Monday, 7=Sunday)
     const dayOfWeek = date.getDay() === 0 ? 7 : date.getDay();
@@ -316,6 +316,8 @@ async function generateShiftsFromTemplate(shiftPlanId: string, templateId: strin
     // Find template shifts for this day of week
     const shiftsForDay = templateShifts.filter(shift => shift.day_of_week === dayOfWeek);
 
+    // Only create shifts if there are template shifts defined for this weekday
+    if (shiftsForDay.length > 0) {
       for (const templateShift of shiftsForDay) {
         const shiftId = uuidv4();
         
@@ -335,4 +337,5 @@ async function generateShiftsFromTemplate(shiftPlanId: string, templateId: strin
         );
       }
     }
+  }
 }

backend/src/controllers/shiftTemplateController.ts

@@ -2,37 +2,63 @@
 import { Request, Response } from 'express';
 import { v4 as uuidv4 } from 'uuid';
 import { db } from '../services/databaseService.js';
-import { ShiftTemplate, CreateShiftTemplateRequest, UpdateShiftTemplateRequest } from '../models/ShiftTemplate.js';
+import { 
+  ShiftTemplate, 
+  TemplateShiftSlot, 
+  TemplateShiftTimeRange, 
+  CreateShiftTemplateRequest, 
+  UpdateShiftTemplateRequest 
+} from '../models/ShiftTemplate.js';
 import { AuthRequest } from '../middleware/auth.js';
 
 export const getTemplates = async (req: Request, res: Response): Promise<void> => {
   try {
-    const templates = await db.all<ShiftTemplate>(`
+    const templates = await db.all<any>(`
       SELECT st.*, u.name as created_by_name 
       FROM shift_templates st
       LEFT JOIN users u ON st.created_by = u.id
       ORDER BY st.created_at DESC
     `);
 
-    // Für jede Vorlage die Schichten laden
+    // Für jede Vorlage die Schichten und Zeit-Slots laden
     const templatesWithShifts = await Promise.all(
       templates.map(async (template) => {
-        const shifts = await db.all<any>(`
-          SELECT * FROM template_shifts 
+        // Lade Schicht-Slots
+        const shiftSlots = await db.all<any>(`
+          SELECT ts.*, tts.name as time_range_name, tts.start_time as time_range_start, tts.end_time as time_range_end
+          FROM template_shifts ts
+          LEFT JOIN template_time_slots tts ON ts.time_slot_id = tts.id
+          WHERE ts.template_id = ? 
+          ORDER BY ts.day_of_week, tts.start_time
+        `, [template.id]);
+
+        // Lade Zeit-Slots
+        const timeSlots = await db.all<any>(`
+          SELECT * FROM template_time_slots 
           WHERE template_id = ? 
-          ORDER BY day_of_week, start_time
+          ORDER BY start_time
         `, [template.id]);
 
         return {
           ...template,
-          shifts: shifts.map(shift => ({
-            id: shift.id,
-            dayOfWeek: shift.day_of_week,
-            name: shift.name,
-            startTime: shift.start_time,
-            endTime: shift.end_time,
-            requiredEmployees: shift.required_employees,
-            color: shift.color
+          shifts: shiftSlots.map(slot => ({
+            id: slot.id,
+            dayOfWeek: slot.day_of_week,
+            timeRange: {
+              id: slot.time_slot_id,
+              name: slot.time_range_name,
+              startTime: slot.time_range_start,
+              endTime: slot.time_range_end
+            },
+            requiredEmployees: slot.required_employees,
+            color: slot.color
+          })),
+          timeSlots: timeSlots.map(slot => ({
+            id: slot.id,
+            name: slot.name,
+            startTime: slot.start_time,
+            endTime: slot.end_time,
+            description: slot.description
           }))
         };
       })
@@ -49,7 +75,7 @@ export const getTemplate = async (req: Request, res: Response): Promise<void> =>
   try {
     const { id } = req.params;
 
-    const template = await db.get<ShiftTemplate>(`
+    const template = await db.get<any>(`
       SELECT st.*, u.name as created_by_name 
       FROM shift_templates st
       LEFT JOIN users u ON st.created_by = u.id
@@ -61,26 +87,46 @@ export const getTemplate = async (req: Request, res: Response): Promise<void> =>
       return;
     }
 
-    const shifts = await db.all<any>(`
-      SELECT * FROM template_shifts 
-      WHERE template_id = ? 
-      ORDER BY day_of_week, start_time
+    // Lade Schicht-Slots
+    const shiftSlots = await db.all<any>(`
+      SELECT ts.*, tts.name as time_range_name, tts.start_time as time_range_start, tts.end_time as time_range_end
+      FROM template_shifts ts
+      LEFT JOIN template_time_slots tts ON ts.time_slot_id = tts.id
+      WHERE ts.template_id = ? 
+      ORDER BY ts.day_of_week, tts.start_time
     `, [id]);
 
-    const templateWithShifts = {
+    // Lade Zeit-Slots
+    const timeSlots = await db.all<any>(`
+      SELECT * FROM template_time_slots 
+      WHERE template_id = ? 
+      ORDER BY start_time
+    `, [id]);
+
+    const templateWithData = {
       ...template,
-      shifts: shifts.map(shift => ({
-        id: shift.id,
-        dayOfWeek: shift.day_of_week,
-        name: shift.name,
-        startTime: shift.start_time,
-        endTime: shift.end_time,
-        requiredEmployees: shift.required_employees,
-        color: shift.color
+      shifts: shiftSlots.map(slot => ({
+        id: slot.id,
+        dayOfWeek: slot.day_of_week,
+        timeRange: {
+          id: slot.time_slot_id,
+          name: slot.time_range_name,
+          startTime: slot.time_range_start,
+          endTime: slot.time_range_end
+        },
+        requiredEmployees: slot.required_employees,
+        color: slot.color
+      })),
+      timeSlots: timeSlots.map(slot => ({
+        id: slot.id,
+        name: slot.name,
+        startTime: slot.start_time,
+        endTime: slot.end_time,
+        description: slot.description
       }))
     };
 
-    res.json(templateWithShifts);
+    res.json(templateWithData);
   } catch (error) {
     console.error('Error fetching template:', error);
     res.status(500).json({ error: 'Internal server error' });
@@ -98,32 +144,46 @@ export const createDefaultTemplate = async (userId: string): Promise<string> =>
       await db.run(
         `INSERT INTO shift_templates (id, name, description, is_default, created_by) 
          VALUES (?, ?, ?, ?, ?)`,
-        [templateId, 'Standardwoche', 'Mo-Do: 2 Schichten, Fr: 1 Schicht', true, userId]
+        [templateId, 'Standardwoche', 'Standard Vorlage mit konfigurierten Zeit-Slots', true, userId]
       );
 
-      // Vormittagsschicht Mo-Do
-      for (let day = 1; day <= 4; day++) {
+      // Füge Zeit-Slots hinzu
+      const timeSlots = [
+        { id: uuidv4(), name: 'Vormittag', startTime: '08:00', endTime: '12:00', description: 'Vormittagsschicht' },
+        { id: uuidv4(), name: 'Nachmittag', startTime: '12:00', endTime: '16:00', description: 'Nachmittagsschicht' },
+        { id: uuidv4(), name: 'Abend', startTime: '16:00', endTime: '20:00', description: 'Abendschicht' }
+      ];
+
+      for (const slot of timeSlots) {
         await db.run(
-          `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
-           VALUES (?, ?, ?, ?, ?, ?, ?)`,
-          [uuidv4(), templateId, day, 'Vormittagsschicht', '08:00', '12:00', 1]
+          `INSERT INTO template_time_slots (id, template_id, name, start_time, end_time, description) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [slot.id, templateId, slot.name, slot.startTime, slot.endTime, slot.description]
         );
       }
 
-      // Nachmittagsschicht Mo-Do
+      // Erstelle Schichten für Mo-Do mit Zeit-Slot Referenzen
       for (let day = 1; day <= 4; day++) {
+        // Vormittagsschicht
         await db.run(
-          `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
-           VALUES (?, ?, ?, ?, ?, ?, ?)`,
-          [uuidv4(), templateId, day, 'Nachmittagsschicht', '11:30', '15:30', 1]
+          `INSERT INTO template_shifts (id, template_id, day_of_week, time_slot_id, required_employees, color) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [uuidv4(), templateId, day, timeSlots[0].id, 1, '#3498db']
+        );
+
+        // Nachmittagsschicht
+        await db.run(
+          `INSERT INTO template_shifts (id, template_id, day_of_week, time_slot_id, required_employees, color) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [uuidv4(), templateId, day, timeSlots[1].id, 1, '#e74c3c']
         );
       }
 
       // Freitag nur Vormittagsschicht
       await db.run(
-        `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
-         VALUES (?, ?, ?, ?, ?, ?, ?)`,
-        [uuidv4(), templateId, 5, 'Vormittagsschicht', '08:00', '12:00', 1]
+        `INSERT INTO template_shifts (id, template_id, day_of_week, time_slot_id, required_employees, color) 
+         VALUES (?, ?, ?, ?, ?, ?)`,
+        [uuidv4(), templateId, 5, timeSlots[0].id, 1, '#3498db']
       );
 
       await db.run('COMMIT');
@@ -140,7 +200,7 @@ export const createDefaultTemplate = async (userId: string): Promise<string> =>
 
 export const createTemplate = async (req: Request, res: Response): Promise<void> => {
   try {
-    const { name, description, isDefault, shifts }: CreateShiftTemplateRequest = req.body;
+    const { name, description, isDefault, shifts, timeSlots }: CreateShiftTemplateRequest = req.body;
     const userId = (req as AuthRequest).user?.userId;
 
     if (!userId) {
@@ -167,13 +227,23 @@ export const createTemplate = async (req: Request, res: Response): Promise<void>
         [templateId, name, description, isDefault ? 1 : 0, userId]
       );
 
+      // Insert time slots
+      for (const timeSlot of timeSlots) {
+        const timeSlotId = timeSlot.id || uuidv4();
+        await db.run(
+          `INSERT INTO template_time_slots (id, template_id, name, start_time, end_time, description) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [timeSlotId, templateId, timeSlot.name, timeSlot.startTime, timeSlot.endTime, timeSlot.description]
+        );
+      }
+
       // Insert shifts
       for (const shift of shifts) {
         const shiftId = uuidv4();
         await db.run(
-          `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees, color) 
-           VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
-          [shiftId, templateId, shift.dayOfWeek, shift.name, shift.startTime, shift.endTime, shift.requiredEmployees, shift.color || '#3498db']
+          `INSERT INTO template_shifts (id, template_id, day_of_week, time_slot_id, required_employees, color) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [shiftId, templateId, shift.dayOfWeek, shift.timeRange.id, shift.requiredEmployees, shift.color || '#3498db']
         );
       }
 
@@ -188,31 +258,8 @@ export const createTemplate = async (req: Request, res: Response): Promise<void>
       await db.run('COMMIT');
 
       // Return created template
-      const createdTemplate = await db.get<ShiftTemplate>(`
-        SELECT st.*, u.name as created_by_name 
-        FROM shift_templates st
-        LEFT JOIN users u ON st.created_by = u.id
-        WHERE st.id = ?
-      `, [templateId]);
-
-      const templateShifts = await db.all<any>(`
-        SELECT * FROM template_shifts 
-        WHERE template_id = ? 
-        ORDER BY day_of_week, start_time
-      `, [templateId]);
-
-      res.status(201).json({
-        ...createdTemplate,
-        shifts: templateShifts.map(shift => ({
-          id: shift.id,
-          dayOfWeek: shift.day_of_week,
-          name: shift.name,
-          startTime: shift.start_time,
-          endTime: shift.end_time,
-          requiredEmployees: shift.required_employees,
-          color: shift.color
-        }))
-      });
+      const createdTemplate = await getTemplateById(templateId);
+      res.status(201).json(createdTemplate);
 
     } catch (error) {
       await db.run('ROLLBACK');
@@ -228,7 +275,7 @@ export const createTemplate = async (req: Request, res: Response): Promise<void>
 export const updateTemplate = async (req: Request, res: Response): Promise<void> => {
   try {
     const { id } = req.params;
-    const { name, description, isDefault, shifts }: UpdateShiftTemplateRequest = req.body;
+    const { name, description, isDefault, shifts, timeSlots }: UpdateShiftTemplateRequest = req.body;
 
     // Check if template exists
     const existingTemplate = await db.get('SELECT * FROM shift_templates WHERE id = ?', [id]);
@@ -258,6 +305,22 @@ export const updateTemplate = async (req: Request, res: Response): Promise<void>
         );
       }
 
+      // If updating time slots, replace all time slots
+      if (timeSlots) {
+        // Delete existing time slots
+        await db.run('DELETE FROM template_time_slots WHERE template_id = ?', [id]);
+
+        // Insert new time slots
+        for (const timeSlot of timeSlots) {
+          const timeSlotId = timeSlot.id || uuidv4();
+          await db.run(
+            `INSERT INTO template_time_slots (id, template_id, name, start_time, end_time, description) 
+             VALUES (?, ?, ?, ?, ?, ?)`,
+            [timeSlotId, id, timeSlot.name, timeSlot.startTime, timeSlot.endTime, timeSlot.description]
+          );
+        }
+      }
+
       // If updating shifts, replace all shifts
       if (shifts) {
         // Delete existing shifts
@@ -267,9 +330,9 @@ export const updateTemplate = async (req: Request, res: Response): Promise<void>
         for (const shift of shifts) {
           const shiftId = uuidv4();
           await db.run(
-            `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees, color) 
-             VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
-            [shiftId, id, shift.dayOfWeek, shift.name, shift.startTime, shift.endTime, shift.requiredEmployees, shift.color || '#3498db']
+            `INSERT INTO template_shifts (id, template_id, day_of_week, time_slot_id, required_employees, color) 
+             VALUES (?, ?, ?, ?, ?, ?)`,
+            [shiftId, id, shift.dayOfWeek, shift.timeRange.id, shift.requiredEmployees, shift.color || '#3498db']
           );
         }
       }
@@ -285,31 +348,8 @@ export const updateTemplate = async (req: Request, res: Response): Promise<void>
       await db.run('COMMIT');
 
       // Return updated template
-      const updatedTemplate = await db.get<ShiftTemplate>(`
-        SELECT st.*, u.name as created_by_name 
-        FROM shift_templates st
-        LEFT JOIN users u ON st.created_by = u.id
-        WHERE st.id = ?
-      `, [id]);
-
-      const templateShifts = await db.all<any>(`
-        SELECT * FROM template_shifts 
-        WHERE template_id = ? 
-        ORDER BY day_of_week, start_time
-      `, [id]);
-
-      res.json({
-        ...updatedTemplate,
-        shifts: templateShifts.map(shift => ({
-          id: shift.id,
-          dayOfWeek: shift.day_of_week,
-          name: shift.name,
-          startTime: shift.start_time,
-          endTime: shift.end_time,
-          requiredEmployees: shift.required_employees,
-          color: shift.color
-        }))
-      });
+      const updatedTemplate = await getTemplateById(id);
+      res.json(updatedTemplate);
 
     } catch (error) {
       await db.run('ROLLBACK');
@@ -334,7 +374,7 @@ export const deleteTemplate = async (req: Request, res: Response): Promise<void>
     }
 
     await db.run('DELETE FROM shift_templates WHERE id = ?', [id]);
-    // Template shifts will be automatically deleted due to CASCADE
+    // Template shifts and time slots will be automatically deleted due to CASCADE
 
     res.status(204).send();
   } catch (error) {
@@ -342,3 +382,56 @@ export const deleteTemplate = async (req: Request, res: Response): Promise<void>
     res.status(500).json({ error: 'Internal server error' });
   }
 };
+
+// Helper function to get template by ID
+async function getTemplateById(templateId: string): Promise<any> {
+  const template = await db.get<any>(`
+    SELECT st.*, u.name as created_by_name 
+    FROM shift_templates st
+    LEFT JOIN users u ON st.created_by = u.id
+    WHERE st.id = ?
+  `, [templateId]);
+
+  if (!template) {
+    return null;
+  }
+
+  // Lade Schicht-Slots
+  const shiftSlots = await db.all<any>(`
+    SELECT ts.*, tts.name as time_range_name, tts.start_time as time_range_start, tts.end_time as time_range_end
+    FROM template_shifts ts
+    LEFT JOIN template_time_slots tts ON ts.time_slot_id = tts.id
+    WHERE ts.template_id = ? 
+    ORDER BY ts.day_of_week, tts.start_time
+  `, [templateId]);
+
+  // Lade Zeit-Slots
+  const timeSlots = await db.all<any>(`
+    SELECT * FROM template_time_slots 
+    WHERE template_id = ? 
+    ORDER BY start_time
+  `, [templateId]);
+
+  return {
+    ...template,
+    shifts: shiftSlots.map(slot => ({
+      id: slot.id,
+      dayOfWeek: slot.day_of_week,
+      timeRange: {
+        id: slot.time_slot_id,
+        name: slot.time_range_name,
+        startTime: slot.time_range_start,
+        endTime: slot.time_range_end
+      },
+      requiredEmployees: slot.required_employees,
+      color: slot.color
+    })),
+    timeSlots: timeSlots.map(slot => ({
+      id: slot.id,
+      name: slot.name,
+      startTime: slot.start_time,
+      endTime: slot.end_time,
+      description: slot.description
+    }))
+  };
+}

backend/src/database/schema.sql

@@ -27,7 +27,7 @@ CREATE TABLE IF NOT EXISTS shift_templates (
 CREATE TABLE IF NOT EXISTS template_shifts (
   id TEXT PRIMARY KEY,
   template_id TEXT NOT NULL,
-  day_of_week INTEGER NOT NULL CHECK (day_of_week >= 1 AND day_of_week <= 5),
+  day_of_week INTEGER NOT NULL CHECK (day_of_week >= 1 AND day_of_week <= 7),
   name TEXT NOT NULL,
   start_time TEXT NOT NULL,
   end_time TEXT NOT NULL,
@@ -51,6 +51,7 @@ CREATE TABLE IF NOT EXISTS shift_plans (
 
 CREATE TABLE IF NOT EXISTS assigned_shifts (
   id TEXT PRIMARY KEY,
+  name TEXT NOT NULL,
   shift_plan_id TEXT NOT NULL,
   date TEXT NOT NULL,
   start_time TEXT NOT NULL,
@@ -64,7 +65,7 @@ CREATE TABLE IF NOT EXISTS assigned_shifts (
 CREATE TABLE IF NOT EXISTS employee_availabilities (
   id TEXT PRIMARY KEY,
   employee_id TEXT NOT NULL,
-  day_of_week INTEGER NOT NULL CHECK (day_of_week >= 1 AND day_of_week <= 5),
+  day_of_week INTEGER NOT NULL CHECK (day_of_week >= 0 AND day_of_week <= 6),
   start_time TEXT NOT NULL,
   end_time TEXT NOT NULL,
   is_available BOOLEAN DEFAULT FALSE,

backend/src/models/Shift.ts

@@ -1,17 +1,37 @@
 // backend/src/models/Shift.ts
-export interface ShiftTemplate {
+export interface Shift {
   id: string;
   name: string;
-  shifts: TemplateShift[];
+  description?: string;
+  isDefault: boolean;
   createdBy: string;
+  createdAt: string;
+  shifts: ShiftSlot[];
 }
 
-export interface TemplateShift {
-  dayOfWeek: number; // 0-6
+export interface ShiftSlot {
+  id: string;
+  shiftId: string;
+  dayOfWeek: number;
   name: string;
-  startTime: string; // "08:00"
-  endTime: string;   // "12:00"
+  startTime: string;
+  endTime: string;
   requiredEmployees: number;
+  color?: string;
+}
+
+export interface CreateShiftRequest {
+  name: string;
+  description?: string;
+  isDefault: boolean;
+  shifts: Omit<ShiftSlot, 'id' | 'shiftId'>[];
+}
+
+export interface UpdateShiftSlotRequest {
+  name?: string;
+  description?: string;
+  isDefault?: boolean;
+  shifts?: Omit<ShiftSlot, 'id' | 'shiftId'>[];
 }
 
 export interface ShiftPlan {

backend/src/models/ShiftTemplate.ts

@@ -1,30 +1,35 @@
 // backend/src/models/ShiftTemplate.ts
-export interface ShiftTemplate {
+export interface TemplateShift {
   id: string;
   name: string;
   description?: string;
   isDefault: boolean;
   createdBy: string;
   createdAt: string;
-  shifts: TemplateShift[];
+  shifts: TemplateShiftSlot[];
 }
 
-export interface TemplateShift {
+export interface TemplateShiftSlot {
   id: string;
-  templateId: string;
   dayOfWeek: number;
-  name: string;
-  startTime: string;
-  endTime: string;
+  timeRange: TemplateShiftTimeRange;
   requiredEmployees: number;
   color?: string;
 }
 
+export interface TemplateShiftTimeRange {
+  id: string;
+  name: string;     // e.g., "Frühschicht", "Spätschicht"
+  startTime: string;
+  endTime: string;
+}
+
 export interface CreateShiftTemplateRequest {
   name: string;
   description?: string;
   isDefault: boolean;
   shifts: Omit<TemplateShift, 'id' | 'templateId'>[];
+  timeSlots: Omit<TemplateShiftTimeRange, 'id'>[];
 }
 
 export interface UpdateShiftTemplateRequest {
@@ -32,4 +37,5 @@ export interface UpdateShiftTemplateRequest {
   description?: string;
   isDefault?: boolean;
   shifts?: Omit<TemplateShift, 'id' | 'templateId'>[];
+  timeSlots?: Omit<TemplateShiftTimeRange, 'id'>[];
 }

backend/src/scripts/applyMigration.ts

@@ -1,17 +1,64 @@
 import { db } from '../services/databaseService.js';
-import { readFile } from 'fs/promises';
+import { readFile, readdir } from 'fs/promises';
 import { fileURLToPath } from 'url';
 import { dirname, join } from 'path';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 
+// Helper function to ensure migrations are tracked
+async function ensureMigrationTable() {
+  await db.exec(`
+    CREATE TABLE IF NOT EXISTS applied_migrations (
+      id TEXT PRIMARY KEY,
+      name TEXT NOT NULL,
+      applied_at DATETIME DEFAULT CURRENT_TIMESTAMP
+    )
+  `);
+}
+
+// Helper function to check if a migration has been applied
+async function isMigrationApplied(migrationName: string): Promise<boolean> {
+  const result = await db.get<{ count: number }>(
+    'SELECT COUNT(*) as count FROM applied_migrations WHERE name = ?',
+    [migrationName]
+  );
+  return (result?.count ?? 0) > 0;
+}
+
+// Helper function to mark a migration as applied
+async function markMigrationAsApplied(migrationName: string) {
+  await db.run(
+    'INSERT INTO applied_migrations (id, name) VALUES (?, ?)',
+    [crypto.randomUUID(), migrationName]
+  );
+}
+
 export async function applyMigration() {
   try {
     console.log('📦 Starting database migration...');
     
-    // Read the migration file
-    const migrationPath = join(__dirname, '../database/migrations/002_add_employee_fields.sql');
+    // Ensure migration tracking table exists
+    await ensureMigrationTable();
+    
+    // Get all migration files
+    const migrationsDir = join(__dirname, '../database/migrations');
+    const files = await readdir(migrationsDir);
+    
+    // Sort files to ensure consistent order
+    const migrationFiles = files
+      .filter(f => f.endsWith('.sql'))
+      .sort();
+    
+    // Process each migration file
+    for (const migrationFile of migrationFiles) {
+      if (await isMigrationApplied(migrationFile)) {
+        console.log(`ℹ️ Migration ${migrationFile} already applied, skipping...`);
+        continue;
+      }
+      
+      console.log(`📄 Applying migration: ${migrationFile}`);
+      const migrationPath = join(migrationsDir, migrationFile);
       const migrationSQL = await readFile(migrationPath, 'utf-8');
       
       // Split into individual statements
@@ -20,6 +67,10 @@ export async function applyMigration() {
         .map(s => s.trim())
         .filter(s => s.length > 0);
       
+      // Start transaction for this migration
+      await db.run('BEGIN TRANSACTION');
+      
+      try {
         // Execute each statement
         for (const statement of statements) {
           try {
@@ -35,7 +86,18 @@ export async function applyMigration() {
           }
         }
         
-    console.log('✅ Migration completed successfully');
+        // Mark migration as applied
+        await markMigrationAsApplied(migrationFile);
+        await db.run('COMMIT');
+        console.log(`✅ Migration ${migrationFile} applied successfully`);
+        
+      } catch (error) {
+        await db.run('ROLLBACK');
+        throw error;
+      }
+    }
+    
+    console.log('✅ All migrations completed successfully');
   } catch (error) {
     console.error('❌ Migration failed:', error);
     throw error;

backend/src/scripts/checkTemplates.ts

@@ -1,9 +1,9 @@
 import { db } from '../services/databaseService.js';
-import { ShiftTemplate } from '../models/ShiftTemplate.js';
+import { TemplateShift } from '../models/ShiftTemplate.js';
 
 async function checkTemplates() {
   try {
-    const templates = await db.all<ShiftTemplate>(
+    const templates = await db.all<TemplateShift>(
       `SELECT st.*, u.name as created_by_name 
        FROM shift_templates st
        LEFT JOIN users u ON st.created_by = u.id`

backend/src/scripts/setupDefaultTemplate.ts

@@ -55,7 +55,7 @@ export async function setupDefaultTemplate(): Promise<void> {
       console.log('Standard-Vorlage erstellt:', templateId);
 
       // Vormittagsschicht Mo-Do
-      for (let day = 1; day <= 4; day++) {
+      for (let day = 1; day <= 5; day++) {
         await db.run(
           `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
            VALUES (?, ?, ?, ?, ?, ?, ?)`,
@@ -63,7 +63,7 @@ export async function setupDefaultTemplate(): Promise<void> {
         );
       }
 
-      console.log('Vormittagsschichten Mo-Do erstellt');
+      console.log('Vormittagsschichten Mo-Fr erstellt');
 
       // Nachmittagsschicht Mo-Do
       for (let day = 1; day <= 4; day++) {
@@ -76,15 +76,6 @@ export async function setupDefaultTemplate(): Promise<void> {
 
       console.log('Nachmittagsschichten Mo-Do erstellt');
 
-      // Freitag nur Vormittagsschicht
-      await db.run(
-        `INSERT INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
-         VALUES (?, ?, ?, ?, ?, ?, ?)`,
-        [uuidv4(), templateId, 5, 'Vormittagsschicht', '08:00', '12:00', 1]
-      );
-
-      console.log('Freitag Vormittagsschicht erstellt');
-
       await db.run('COMMIT');
       console.log('Standard-Vorlage erfolgreich initialisiert');
     } catch (error) {

frontend/src/App.tsx

@@ -9,6 +9,8 @@ import Login from './pages/Auth/Login';
 import Dashboard from './pages/Dashboard/Dashboard';
 import ShiftPlanList from './pages/ShiftPlans/ShiftPlanList';
 import ShiftPlanCreate from './pages/ShiftPlans/ShiftPlanCreate';
+import ShiftPlanEdit from './pages/ShiftPlans/ShiftPlanEdit';
+import ShiftPlanView from './pages/ShiftPlans/ShiftPlanView';
 import EmployeeManagement from './pages/Employees/EmployeeManagement';
 import Settings from './pages/Settings/Settings';
 import Help from './pages/Help/Help';
@@ -93,6 +95,16 @@ const AppContent: React.FC = () => {
           <ShiftPlanCreate />
         </ProtectedRoute>
       } />
+      <Route path="/shift-plans/:id/edit" element={
+        <ProtectedRoute roles={['admin', 'instandhalter']}>
+          <ShiftPlanEdit />
+        </ProtectedRoute>
+      } />
+      <Route path="/shift-plans/:id" element={
+        <ProtectedRoute>
+          <ShiftPlanView />
+        </ProtectedRoute>
+      } />
       <Route path="/employees" element={
         <ProtectedRoute roles={['admin', 'instandhalter']}>
           <EmployeeManagement />

frontend/src/pages/Employees/components/AvailabilityManager.tsx

@@ -2,6 +2,7 @@
 import React, { useState, useEffect } from 'react';
 import { Employee, Availability } from '../../../types/employee';
 import { employeeService } from '../../../services/employeeService';
+import { shiftPlanService, ShiftPlan, ShiftPlanShift } from '../../../services/shiftPlanService';
 
 interface AvailabilityManagerProps {
   employee: Employee;
@@ -9,12 +10,18 @@ interface AvailabilityManagerProps {
   onCancel: () => void;
 }
 
+// Verfügbarkeits-Level
+export type AvailabilityLevel = 1 | 2 | 3; // 1: bevorzugt, 2: möglich, 3: nicht möglich
+
 const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
   employee,
   onSave,
   onCancel
 }) => {
   const [availabilities, setAvailabilities] = useState<Availability[]>([]);
+  const [shiftPlans, setShiftPlans] = useState<ShiftPlan[]>([]);
+  const [selectedPlanId, setSelectedPlanId] = useState<string>('');
+  const [selectedPlan, setSelectedPlan] = useState<ShiftPlan | null>(null);
   const [loading, setLoading] = useState(true);
   const [saving, setSaving] = useState(false);
   const [error, setError] = useState('');
@@ -29,53 +36,112 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
     { id: 0, name: 'Sonntag' }
   ];
 
-  const defaultTimeSlots = [
-    { name: 'Vormittag', start: '08:00', end: '12:00' },
-    { name: 'Nachmittag', start: '12:00', end: '16:00' },
-    { name: 'Abend', start: '16:00', end: '20:00' }
+  // Verfügbarkeits-Level mit Farben und Beschreibungen
+  const availabilityLevels = [
+    { level: 1 as AvailabilityLevel, label: 'Bevorzugt', color: '#27ae60', bgColor: '#d5f4e6', description: 'Ideale Zeit' },
+    { level: 2 as AvailabilityLevel, label: 'Möglich', color: '#f39c12', bgColor: '#fef5e7', description: 'Akzeptable Zeit' },
+    { level: 3 as AvailabilityLevel, label: 'Nicht möglich', color: '#e74c3c', bgColor: '#fadbd8', description: 'Nicht verfügbar' }
   ];
 
   useEffect(() => {
-    loadAvailabilities();
+    loadData();
   }, [employee.id]);
 
-  const loadAvailabilities = async () => {
+  useEffect(() => {
+    if (selectedPlanId) {
+      loadSelectedPlan();
+    }
+  }, [selectedPlanId]);
+
+  const loadData = async () => {
     try {
       setLoading(true);
-      const data = await employeeService.getAvailabilities(employee.id);
-      setAvailabilities(data);
-    } catch (err: any) {
-      // Falls keine Verfügbarkeiten existieren, erstelle Standard-Einträge
-      const defaultAvailabilities = daysOfWeek.flatMap(day =>
-        defaultTimeSlots.map(slot => ({
-          id: `temp-${day.id}-${slot.name}`,
+      
+      // Load availabilities
+      try {
+        const availData = await employeeService.getAvailabilities(employee.id);
+        setAvailabilities(availData);
+      } catch (err) {
+        // Falls keine Verfügbarkeiten existieren, erstelle Standard-Einträge (Level 3: nicht möglich)
+        const defaultAvailabilities: Availability[] = daysOfWeek.flatMap(day => [
+          {
+            id: `temp-${day.id}-morning`,
             employeeId: employee.id,
             dayOfWeek: day.id,
-          startTime: slot.start,
-          endTime: slot.end,
-          isAvailable: false
-        }))
-      );
+            startTime: '08:00',
+            endTime: '12:00',
+            isAvailable: false,
+            availabilityLevel: 3 as AvailabilityLevel
+          },
+          {
+            id: `temp-${day.id}-afternoon`,
+            employeeId: employee.id,
+            dayOfWeek: day.id,
+            startTime: '12:00',
+            endTime: '16:00',
+            isAvailable: false,
+            availabilityLevel: 3 as AvailabilityLevel
+          },
+          {
+            id: `temp-${day.id}-evening`,
+            employeeId: employee.id,
+            dayOfWeek: day.id,
+            startTime: '16:00',
+            endTime: '20:00',
+            isAvailable: false,
+            availabilityLevel: 3 as AvailabilityLevel
+          }
+        ]);
         setAvailabilities(defaultAvailabilities);
+      }
+
+      // Load shift plans
+      const plans = await shiftPlanService.getShiftPlans();
+      setShiftPlans(plans);
+
+      // Auto-select the first published plan or the first draft
+      if (plans.length > 0) {
+        const publishedPlan = plans.find(plan => plan.status === 'published');
+        const firstPlan = publishedPlan || plans[0];
+        setSelectedPlanId(firstPlan.id);
+      }
+    } catch (err: any) {
+      console.error('Error loading data:', err);
+      setError('Daten konnten nicht geladen werden');
     } finally {
       setLoading(false);
     }
   };
 
-  const handleAvailabilityChange = (id: string, isAvailable: boolean) => {
+  const loadSelectedPlan = async () => {
+    try {
+      const plan = await shiftPlanService.getShiftPlan(selectedPlanId);
+      setSelectedPlan(plan);
+    } catch (err: any) {
+      console.error('Error loading shift plan:', err);
+      setError('Schichtplan konnte nicht geladen werden');
+    }
+  };
+
+  const handleAvailabilityLevelChange = (dayId: number, timeSlot: string, level: AvailabilityLevel) => {
     setAvailabilities(prev =>
       prev.map(avail =>
-        avail.id === id ? { ...avail, isAvailable } : avail
+        avail.dayOfWeek === dayId && getTimeSlotName(avail.startTime, avail.endTime) === timeSlot
+          ? { 
+              ...avail, 
+              availabilityLevel: level,
+              isAvailable: level !== 3
+            }
+          : avail
       )
     );
   };
 
-  const handleTimeChange = (id: string, field: 'startTime' | 'endTime', value: string) => {
-    setAvailabilities(prev =>
-      prev.map(avail =>
-        avail.id === id ? { ...avail, [field]: value } : avail
-      )
-    );
+  const getTimeSlotName = (startTime: string, endTime: string): string => {
+    if (startTime === '08:00' && endTime === '12:00') return 'Vormittag';
+    if (startTime === '12:00' && endTime === '16:00') return 'Nachmittag';
+    if (startTime === '16:00' && endTime === '20:00') return 'Abend';
+    return `${startTime}-${endTime}`;
   };
 
   const handleSave = async () => {
@@ -92,8 +158,91 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
     }
   };
 
-  const getAvailabilitiesForDay = (dayId: number) => {
-    return availabilities.filter(avail => avail.dayOfWeek === dayId);
+  // Get availability level for a specific shift
+  const getAvailabilityForShift = (shift: ShiftPlanShift): AvailabilityLevel => {
+    const shiftDate = new Date(shift.date);
+    const dayOfWeek = shiftDate.getDay(); // 0 = Sunday, 1 = Monday, etc.
+    
+    // Find matching availability for this day and time
+    const matchingAvailabilities = availabilities.filter(avail => 
+      avail.dayOfWeek === dayOfWeek &&
+      avail.availabilityLevel !== 3 && // Nur Level 1 und 2 berücksichtigen
+      isTimeOverlap(avail.startTime, avail.endTime, shift.startTime, shift.endTime)
+    );
+    
+    if (matchingAvailabilities.length === 0) {
+      return 3; // Nicht möglich, wenn keine Übereinstimmung
+    }
+    
+    // Nehme das beste (niedrigste) Verfügbarkeits-Level
+    const minLevel = Math.min(...matchingAvailabilities.map(avail => avail.availabilityLevel));
+    return minLevel as AvailabilityLevel;
+  };
+
+  // Helper function to check time overlap
+  const isTimeOverlap = (availStart: string, availEnd: string, shiftStart: string, shiftEnd: string): boolean => {
+    const availStartMinutes = timeToMinutes(availStart);
+    const availEndMinutes = timeToMinutes(availEnd);
+    const shiftStartMinutes = timeToMinutes(shiftStart);
+    const shiftEndMinutes = timeToMinutes(shiftEnd);
+    
+    return shiftStartMinutes < availEndMinutes && shiftEndMinutes > availStartMinutes;
+  };
+
+  const timeToMinutes = (time: string): number => {
+    const [hours, minutes] = time.split(':').map(Number);
+    return hours * 60 + minutes;
+  };
+
+  // Group shifts by weekday for timetable display
+  const getTimetableData = () => {
+    if (!selectedPlan) return { shiftsByDay: {}, weekdays: [] };
+
+    const shiftsByDay: Record<number, ShiftPlanShift[]> = {};
+    
+    // Initialize empty arrays for each day
+    daysOfWeek.forEach(day => {
+      shiftsByDay[day.id] = [];
+    });
+
+    // Group shifts by weekday
+    selectedPlan.shifts.forEach(shift => {
+      const shiftDate = new Date(shift.date);
+      const dayOfWeek = shiftDate.getDay(); // 0 = Sunday, 1 = Monday, etc.
+      shiftsByDay[dayOfWeek].push(shift);
+    });
+
+    // Remove duplicate shifts (same name and time on same day)
+    Object.keys(shiftsByDay).forEach(day => {
+      const dayNum = parseInt(day);
+      const uniqueShifts: ShiftPlanShift[] = [];
+      const seen = new Set();
+      
+      shiftsByDay[dayNum].forEach(shift => {
+        const key = `${shift.name}|${shift.startTime}|${shift.endTime}`;
+        if (!seen.has(key)) {
+          seen.add(key);
+          uniqueShifts.push(shift);
+        }
+      });
+      
+      shiftsByDay[dayNum] = uniqueShifts;
+    });
+
+    return {
+      shiftsByDay,
+      weekdays: daysOfWeek
+    };
+  };
+
+  const timetableData = getTimetableData();
+
+  // Get availability for a specific day and time slot
+  const getAvailabilityForDayAndSlot = (dayId: number, timeSlot: string): AvailabilityLevel => {
+    const availability = availabilities.find(avail => 
+      avail.dayOfWeek === dayId && getTimeSlotName(avail.startTime, avail.endTime) === timeSlot
+    );
+    return availability?.availabilityLevel || 3;
   };
 
   if (loading) {
@@ -106,7 +255,7 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
 
   return (
     <div style={{
-      maxWidth: '800px',
+      maxWidth: '1200px',
       margin: '0 auto',
       backgroundColor: 'white',
       padding: '30px',
@@ -128,7 +277,7 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
           {employee.name}
         </h3>
         <p style={{ margin: 0, color: '#7f8c8d' }}>
-          Legen Sie fest, an welchen Tagen und Zeiten {employee.name} verfügbar ist.
+          Legen Sie die Verfügbarkeit für {employee.name} fest (1: bevorzugt, 2: möglich, 3: nicht möglich).
         </p>
       </div>
 
@@ -145,132 +294,234 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
         </div>
       )}
 
-      {/* Verfügbarkeiten Tabelle */}
+      {/* Verfügbarkeits-Legende */}
       <div style={{
+        marginBottom: '30px',
+        padding: '20px',
+        backgroundColor: '#f8f9fa',
+        borderRadius: '8px',
+        border: '1px solid #e9ecef'
+      }}>
+        <h4 style={{ margin: '0 0 15px 0', color: '#495057' }}>
+          Verfügbarkeits-Level
+        </h4>
+        
+        <div style={{ display: 'flex', gap: '20px', flexWrap: 'wrap' }}>
+          {availabilityLevels.map(level => (
+            <div key={level.level} style={{ display: 'flex', alignItems: 'center', gap: '10px' }}>
+              <div
+                style={{
+                  width: '20px',
+                  height: '20px',
+                  backgroundColor: level.bgColor,
+                  border: `2px solid ${level.color}`,
+                  borderRadius: '4px'
+                }}
+              />
+              <div>
+                <div style={{ fontWeight: 'bold', color: level.color }}>
+                  {level.level}: {level.label}
+                </div>
+                <div style={{ fontSize: '12px', color: '#666' }}>
+                  {level.description}
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+      </div>
+
+      {/* Schichtplan Auswahl */}
+      <div style={{
+        marginBottom: '30px',
+        padding: '20px',
+        backgroundColor: '#f8f9fa',
+        borderRadius: '8px',
+        border: '1px solid #e9ecef'
+      }}>
+        <h4 style={{ margin: '0 0 15px 0', color: '#495057' }}>
+          Verfügbarkeit für Schichtplan prüfen
+        </h4>
+        
+        <div style={{ display: 'flex', gap: '15px', alignItems: 'center', flexWrap: 'wrap' }}>
+          <div>
+            <label style={{ display: 'block', marginBottom: '8px', fontWeight: 'bold', color: '#2c3e50' }}>
+              Schichtplan auswählen:
+            </label>
+            <select
+              value={selectedPlanId}
+              onChange={(e) => setSelectedPlanId(e.target.value)}
+              style={{
+                padding: '8px 12px',
+                border: '1px solid #ddd',
+                borderRadius: '4px',
+                minWidth: '250px'
+              }}
+            >
+              <option value="">Bitte auswählen...</option>
+              {shiftPlans.map(plan => (
+                <option key={plan.id} value={plan.id}>
+                  {plan.name} ({plan.status === 'published' ? 'Veröffentlicht' : 'Entwurf'})
+                </option>
+              ))}
+            </select>
+          </div>
+          
+          {selectedPlan && (
+            <div style={{ fontSize: '14px', color: '#666' }}>
+              Zeitraum: {new Date(selectedPlan.startDate).toLocaleDateString('de-DE')} - {new Date(selectedPlan.endDate).toLocaleDateString('de-DE')}
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Verfügbarkeits-Timetable mit Dropdown-Menüs */}
+      {selectedPlan && (
+        <div style={{
+          marginBottom: '30px',
           border: '1px solid #e0e0e0',
           borderRadius: '8px',
-        overflow: 'hidden',
-        marginBottom: '30px'
+          overflow: 'hidden'
         }}>
-        {daysOfWeek.map((day, dayIndex) => {
-          const dayAvailabilities = getAvailabilitiesForDay(day.id);
-          const isLastDay = dayIndex === daysOfWeek.length - 1;
-          
-          return (
-            <div key={day.id} style={{
-              borderBottom: isLastDay ? 'none' : '1px solid #f0f0f0'
-            }}>
-              {/* Tag Header */}
           <div style={{
-                backgroundColor: '#f8f9fa',
+            backgroundColor: '#2c3e50',
+            color: 'white',
             padding: '15px 20px',
-                fontWeight: 'bold',
-                color: '#2c3e50',
-                borderBottom: '1px solid #e0e0e0'
+            fontWeight: 'bold'
           }}>
-                {day.name}
+            Verfügbarkeit für: {selectedPlan.name}
           </div>
 
-              {/* Zeit-Slots */}
-              <div style={{ padding: '15px 20px' }}>
-                {dayAvailabilities.map((availability, availabilityIndex) => {
-                  const isLastAvailability = availabilityIndex === dayAvailabilities.length - 1;
+          <div style={{ overflowX: 'auto' }}>
+            <table style={{
+              width: '100%',
+              borderCollapse: 'collapse',
+              backgroundColor: 'white'
+            }}>
+              <thead>
+                <tr style={{ backgroundColor: '#f8f9fa' }}>
+                  <th style={{
+                    padding: '12px 16px',
+                    textAlign: 'left',
+                    border: '1px solid #dee2e6',
+                    fontWeight: 'bold',
+                    minWidth: '150px'
+                  }}>
+                    Zeit
+                  </th>
+                  {timetableData.weekdays.map(weekday => (
+                    <th key={weekday.id} style={{
+                      padding: '12px 16px',
+                      textAlign: 'center',
+                      border: '1px solid #dee2e6',
+                      fontWeight: 'bold',
+                      minWidth: '150px'
+                    }}>
+                      {weekday.name}
+                    </th>
+                  ))}
+                </tr>
+              </thead>
+              <tbody>
+                {['Vormittag', 'Nachmittag', 'Abend'].map((timeSlot, timeIndex) => (
+                  <tr key={timeSlot} style={{
+                    backgroundColor: timeIndex % 2 === 0 ? 'white' : '#f8f9fa'
+                  }}>
+                    <td style={{
+                      padding: '12px 16px',
+                      border: '1px solid #dee2e6',
+                      fontWeight: '500',
+                      backgroundColor: '#f8f9fa'
+                    }}>
+                      {timeSlot}
+                      <div style={{ fontSize: '12px', color: '#666', marginTop: '4px' }}>
+                        {timeSlot === 'Vormittag' ? '08:00-12:00' : 
+                         timeSlot === 'Nachmittag' ? '12:00-16:00' : '16:00-20:00'}
+                      </div>
+                    </td>
+                    {timetableData.weekdays.map(weekday => {
+                      const currentLevel = getAvailabilityForDayAndSlot(weekday.id, timeSlot);
+                      const levelConfig = availabilityLevels.find(l => l.level === currentLevel);
                       
                       return (
-                    <div
-                      key={availability.id}
-                      style={{
-                        display: 'grid',
-                        gridTemplateColumns: '1fr auto auto auto',
-                        gap: '15px',
-                        alignItems: 'center',
-                        padding: '10px 0',
-                        borderBottom: isLastAvailability ? 'none' : '1px solid #f8f9fa'
-                      }}
-                    >
-                      {/* Verfügbarkeit Toggle */}
-                      <div style={{ display: 'flex', alignItems: 'center', gap: '10px' }}>
-                        <input
-                          type="checkbox"
-                          id={`avail-${availability.id}`}
-                          checked={availability.isAvailable}
-                          onChange={(e) => handleAvailabilityChange(availability.id, e.target.checked)}
-                          style={{ width: '18px', height: '18px' }}
-                        />
-                        <label 
-                          htmlFor={`avail-${availability.id}`}
+                        <td key={weekday.id} style={{
+                          padding: '12px 16px',
+                          border: '1px solid #dee2e6',
+                          textAlign: 'center',
+                          backgroundColor: levelConfig?.bgColor
+                        }}>
+                          <select
+                            value={currentLevel}
+                            onChange={(e) => handleAvailabilityLevelChange(weekday.id, timeSlot, parseInt(e.target.value) as AvailabilityLevel)}
                             style={{
+                              padding: '8px 12px',
+                              border: `2px solid ${levelConfig?.color || '#ddd'}`,
+                              borderRadius: '6px',
+                              backgroundColor: levelConfig?.bgColor || 'white',
+                              color: levelConfig?.color || '#333',
                               fontWeight: 'bold',
-                            color: availability.isAvailable ? '#27ae60' : '#95a5a6'
+                              minWidth: '120px',
+                              cursor: 'pointer',
+                              textAlign: 'center'
                             }}
                           >
-                          {availability.isAvailable ? 'Verfügbar' : 'Nicht verfügbar'}
-                        </label>
-                      </div>
-
-                      {/* Startzeit */}
-                      <div>
-                        <label style={{ fontSize: '12px', color: '#7f8c8d', display: 'block', marginBottom: '4px' }}>
-                          Von
-                        </label>
-                        <input
-                          type="time"
-                          value={availability.startTime}
-                          onChange={(e) => handleTimeChange(availability.id, 'startTime', e.target.value)}
-                          disabled={!availability.isAvailable}
+                            {availabilityLevels.map(level => (
+                              <option 
+                                key={level.level} 
+                                value={level.level}
                                 style={{
-                            padding: '6px 8px',
-                            border: `1px solid ${availability.isAvailable ? '#ddd' : '#f0f0f0'}`,
-                            borderRadius: '4px',
-                            backgroundColor: availability.isAvailable ? 'white' : '#f8f9fa',
-                            color: availability.isAvailable ? '#333' : '#999'
-                          }}
-                        />
-                      </div>
-
-                      {/* Endzeit */}
-                      <div>
-                        <label style={{ fontSize: '12px', color: '#7f8c8d', display: 'block', marginBottom: '4px' }}>
-                          Bis
-                        </label>
-                        <input
-                          type="time"
-                          value={availability.endTime}
-                          onChange={(e) => handleTimeChange(availability.id, 'endTime', e.target.value)}
-                          disabled={!availability.isAvailable}
-                          style={{
-                            padding: '6px 8px',
-                            border: `1px solid ${availability.isAvailable ? '#ddd' : '#f0f0f0'}`,
-                            borderRadius: '4px',
-                            backgroundColor: availability.isAvailable ? 'white' : '#f8f9fa',
-                            color: availability.isAvailable ? '#333' : '#999'
-                          }}
-                        />
-                      </div>
-
-                      {/* Status Badge */}
-                      <div>
-                        <span
-                          style={{
-                            backgroundColor: availability.isAvailable ? '#d5f4e6' : '#fadbd8',
-                            color: availability.isAvailable ? '#27ae60' : '#e74c3c',
-                            padding: '4px 8px',
-                            borderRadius: '12px',
-                            fontSize: '12px',
+                                  backgroundColor: level.bgColor,
+                                  color: level.color,
                                   fontWeight: 'bold'
                                 }}
                               >
-                          {availability.isAvailable ? 'Aktiv' : 'Inaktiv'}
+                                {level.level}: {level.label}
+                              </option>
+                            ))}
+                          </select>
+                          <div style={{ 
+                            fontSize: '11px', 
+                            color: levelConfig?.color,
+                            marginTop: '4px',
+                            fontWeight: 'bold'
+                          }}>
+                            {levelConfig?.description}
+                          </div>
+                        </td>
+                      );
+                    })}
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+
+          {/* Legende */}
+          <div style={{
+            padding: '12px 16px',
+            backgroundColor: '#e8f4fd',
+            borderTop: '1px solid #b8d4f0',
+            fontSize: '14px',
+            color: '#2c3e50'
+          }}>
+            <strong>Legende:</strong> 
+            {availabilityLevels.map(level => (
+              <span key={level.level} style={{ marginLeft: '15px', display: 'inline-flex', alignItems: 'center', gap: '5px' }}>
+                <div
+                  style={{
+                    width: '12px',
+                    height: '12px',
+                    backgroundColor: level.bgColor,
+                    border: `1px solid ${level.color}`,
+                    borderRadius: '2px'
+                  }}
+                />
+                <strong style={{ color: level.color }}>{level.level}</strong>: {level.label}
               </span>
+            ))}
           </div>
         </div>
-                  );
-                })}
-              </div>
-            </div>
-          );
-        })}
-      </div>
+      )}
 
       {/* Info Text */}
       <div style={{
@@ -282,8 +533,10 @@ const AvailabilityManager: React.FC<AvailabilityManagerProps> = ({
       }}>
         <h4 style={{ margin: '0 0 8px 0', color: '#2c3e50' }}>💡 Information</h4>
         <p style={{ margin: 0, color: '#546e7a', fontSize: '14px' }}>
-          Verfügbarkeiten bestimmen, wann dieser Mitarbeiter für Schichten eingeplant werden kann.
-          Nur als "verfügbar" markierte Zeitfenster werden bei der automatischen Schichtplanung berücksichtigt.
+          <strong>1: Bevorzugt</strong> - Ideale Zeit für diesen Mitarbeiter<br/>
+          <strong>2: Möglich</strong> - Akzeptable Zeit, falls benötigt<br/>
+          <strong>3: Nicht möglich</strong> - Mitarbeiter ist nicht verfügbar<br/>
+          Das System priorisiert Mitarbeiter mit Level 1 für Schichtzuweisungen.
         </p>
       </div>
 

frontend/src/pages/ShiftPlans/ShiftPlanCreate.tsx

@@ -3,7 +3,7 @@ import React, { useState, useEffect } from 'react';
 import { useNavigate, useSearchParams } from 'react-router-dom';
 import { shiftTemplateService } from '../../services/shiftTemplateService';
 import { shiftPlanService } from '../../services/shiftPlanService';
-import { ShiftTemplate } from '../../types/shiftTemplate';
+import { TemplateShift } from '../../types/shiftTemplate';
 import styles from './ShiftPlanCreate.module.css';
 
 const ShiftPlanCreate: React.FC = () => {
@@ -14,7 +14,7 @@ const ShiftPlanCreate: React.FC = () => {
   const [startDate, setStartDate] = useState('');
   const [endDate, setEndDate] = useState('');
   const [selectedTemplate, setSelectedTemplate] = useState('');
-  const [templates, setTemplates] = useState<ShiftTemplate[]>([]);
+  const [templates, setTemplates] = useState<TemplateShift[]>([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
 

frontend/src/pages/ShiftPlans/ShiftPlanEdit.tsx

@@ -0,0 +1,430 @@
+// frontend/src/pages/ShiftPlans/ShiftPlanEdit.tsx
+import React, { useState, useEffect } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import { shiftPlanService, ShiftPlan, ShiftPlanShift } from '../../services/shiftPlanService';
+import { useNotification } from '../../contexts/NotificationContext';
+
+const ShiftPlanEdit: React.FC = () => {
+  const { id } = useParams<{ id: string }>();
+  const navigate = useNavigate();
+  const { showNotification } = useNotification();
+  const [shiftPlan, setShiftPlan] = useState<ShiftPlan | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [editingShift, setEditingShift] = useState<ShiftPlanShift | null>(null);
+  const [newShift, setNewShift] = useState<Partial<ShiftPlanShift>>({
+    date: '',
+    name: '',
+    startTime: '',
+    endTime: '',
+    requiredEmployees: 1
+  });
+
+  useEffect(() => {
+    loadShiftPlan();
+  }, [id]);
+
+  const loadShiftPlan = async () => {
+    if (!id) return;
+    try {
+      const plan = await shiftPlanService.getShiftPlan(id);
+      setShiftPlan(plan);
+    } catch (error) {
+      console.error('Error loading shift plan:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Der Schichtplan konnte nicht geladen werden.'
+      });
+      navigate('/shift-plans');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleUpdateShift = async (shift: ShiftPlanShift) => {
+    if (!shiftPlan || !id) return;
+    
+    try {
+      await shiftPlanService.updateShiftPlanShift(id, shift);
+      showNotification({
+        type: 'success',
+        title: 'Erfolg',
+        message: 'Schicht wurde aktualisiert.'
+      });
+      loadShiftPlan();
+      setEditingShift(null);
+    } catch (error) {
+      console.error('Error updating shift:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Die Schicht konnte nicht aktualisiert werden.'
+      });
+    }
+  };
+
+  const handleAddShift = async () => {
+    if (!shiftPlan || !id) return;
+    
+    if (!newShift.date || !newShift.name || !newShift.startTime || !newShift.endTime || !newShift.requiredEmployees) {
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Bitte füllen Sie alle Pflichtfelder aus.'
+      });
+      return;
+    }
+    
+    try {
+      await shiftPlanService.addShiftPlanShift(id, {
+        date: newShift.date,
+        name: newShift.name,
+        startTime: newShift.startTime,
+        endTime: newShift.endTime,
+        requiredEmployees: Number(newShift.requiredEmployees)
+      });
+      showNotification({
+        type: 'success',
+        title: 'Erfolg',
+        message: 'Neue Schicht wurde hinzugefügt.'
+      });
+      setNewShift({
+        date: '',
+        name: '',
+        startTime: '',
+        endTime: '',
+        requiredEmployees: 1
+      });
+      loadShiftPlan();
+    } catch (error) {
+      console.error('Error adding shift:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Die Schicht konnte nicht hinzugefügt werden.'
+      });
+    }
+  };
+
+  const handleDeleteShift = async (shiftId: string) => {
+    if (!window.confirm('Möchten Sie diese Schicht wirklich löschen?')) {
+      return;
+    }
+
+    try {
+      await shiftPlanService.deleteShiftPlanShift(id!, shiftId);
+      showNotification({
+        type: 'success',
+        title: 'Erfolg',
+        message: 'Schicht wurde gelöscht.'
+      });
+      loadShiftPlan();
+    } catch (error) {
+      console.error('Error deleting shift:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Die Schicht konnte nicht gelöscht werden.'
+      });
+    }
+  };
+
+  const handlePublish = async () => {
+    if (!shiftPlan || !id) return;
+
+    try {
+      await shiftPlanService.updateShiftPlan(id, {
+        ...shiftPlan,
+        status: 'published'
+      });
+      showNotification({
+        type: 'success',
+        title: 'Erfolg',
+        message: 'Schichtplan wurde veröffentlicht.'
+      });
+      loadShiftPlan();
+    } catch (error) {
+      console.error('Error publishing shift plan:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Der Schichtplan konnte nicht veröffentlicht werden.'
+      });
+    }
+  };
+
+  if (loading) {
+    return <div>Lade Schichtplan...</div>;
+  }
+
+  if (!shiftPlan) {
+    return <div>Schichtplan nicht gefunden</div>;
+  }
+
+  // Group shifts by date
+  const shiftsByDate = shiftPlan.shifts.reduce((acc, shift) => {
+    if (!acc[shift.date]) {
+      acc[shift.date] = [];
+    }
+    acc[shift.date].push(shift);
+    return acc;
+  }, {} as Record<string, typeof shiftPlan.shifts>);
+
+  return (
+    <div style={{ padding: '20px' }}>
+      <div style={{ 
+        display: 'flex', 
+        justifyContent: 'space-between', 
+        alignItems: 'center',
+        marginBottom: '30px' 
+      }}>
+        <h1>{shiftPlan.name} bearbeiten</h1>
+        <div>
+          {shiftPlan.status === 'draft' && (
+            <button
+              onClick={handlePublish}
+              style={{
+                padding: '8px 16px',
+                backgroundColor: '#2ecc71',
+                color: 'white',
+                border: 'none',
+                borderRadius: '4px',
+                cursor: 'pointer',
+                marginRight: '10px'
+              }}
+            >
+              Veröffentlichen
+            </button>
+          )}
+          <button
+            onClick={() => navigate('/shift-plans')}
+            style={{
+              padding: '8px 16px',
+              backgroundColor: '#95a5a6',
+              color: 'white',
+              border: 'none',
+              borderRadius: '4px',
+              cursor: 'pointer'
+            }}
+          >
+            Zurück
+          </button>
+        </div>
+      </div>
+
+      {/* Add new shift form */}
+      <div style={{
+        backgroundColor: 'white',
+        borderRadius: '8px',
+        padding: '20px',
+        marginBottom: '20px',
+        boxShadow: '0 2px 4px rgba(0,0,0,0.1)'
+      }}>
+        <h3>Neue Schicht hinzufügen</h3>
+        <div style={{ display: 'grid', gap: '15px', gridTemplateColumns: 'repeat(auto-fit, minmax(200px, 1fr))' }}>
+          <div>
+            <label>Datum</label>
+            <input
+              type="date"
+              value={newShift.date}
+              onChange={(e) => setNewShift({ ...newShift, date: e.target.value })}
+              style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+            />
+          </div>
+          <div>
+            <label>Name</label>
+            <input
+              type="text"
+              value={newShift.name}
+              onChange={(e) => setNewShift({ ...newShift, name: e.target.value })}
+              style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+            />
+          </div>
+          <div>
+            <label>Startzeit</label>
+            <input
+              type="time"
+              value={newShift.startTime}
+              onChange={(e) => setNewShift({ ...newShift, startTime: e.target.value })}
+              style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+            />
+          </div>
+          <div>
+            <label>Endzeit</label>
+            <input
+              type="time"
+              value={newShift.endTime}
+              onChange={(e) => setNewShift({ ...newShift, endTime: e.target.value })}
+              style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+            />
+          </div>
+          <div>
+            <label>Benötigte Mitarbeiter</label>
+            <input
+              type="number"
+              min="1"
+              value={newShift.requiredEmployees}
+              onChange={(e) => setNewShift({ ...newShift, requiredEmployees: parseInt(e.target.value) })}
+              style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+            />
+          </div>
+        </div>
+        <button
+          onClick={handleAddShift}
+          disabled={!newShift.date || !newShift.name || !newShift.startTime || !newShift.endTime}
+          style={{
+            marginTop: '15px',
+            padding: '8px 16px',
+            backgroundColor: '#3498db',
+            color: 'white',
+            border: 'none',
+            borderRadius: '4px',
+            cursor: 'pointer'
+          }}
+        >
+          Schicht hinzufügen
+        </button>
+      </div>
+
+      {/* Existing shifts */}
+      <div style={{ display: 'grid', gap: '20px' }}>
+        {Object.entries(shiftsByDate).map(([date, shifts]) => (
+          <div key={date} style={{
+            backgroundColor: 'white',
+            borderRadius: '8px',
+            padding: '20px',
+            boxShadow: '0 2px 4px rgba(0,0,0,0.1)'
+          }}>
+            <h3 style={{ marginTop: 0 }}>{new Date(date).toLocaleDateString('de-DE', { weekday: 'long', day: '2-digit', month: '2-digit', year: 'numeric' })}</h3>
+            <div style={{ display: 'grid', gap: '15px' }}>
+              {shifts.map(shift => (
+                <div key={shift.id} style={{
+                  backgroundColor: '#f8f9fa',
+                  padding: '15px',
+                  borderRadius: '6px',
+                  boxShadow: '0 1px 3px rgba(0,0,0,0.05)'
+                }}>
+                  {editingShift?.id === shift.id ? (
+                    <div style={{ display: 'grid', gap: '10px', gridTemplateColumns: 'repeat(auto-fit, minmax(200px, 1fr))' }}>
+                      <div>
+                        <label>Name</label>
+                        <input
+                          type="text"
+                          value={editingShift.name}
+                          onChange={(e) => setEditingShift({ ...editingShift, name: e.target.value })}
+                          style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+                        />
+                      </div>
+                      <div>
+                        <label>Startzeit</label>
+                        <input
+                          type="time"
+                          value={editingShift.startTime}
+                          onChange={(e) => setEditingShift({ ...editingShift, startTime: e.target.value })}
+                          style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+                        />
+                      </div>
+                      <div>
+                        <label>Endzeit</label>
+                        <input
+                          type="time"
+                          value={editingShift.endTime}
+                          onChange={(e) => setEditingShift({ ...editingShift, endTime: e.target.value })}
+                          style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+                        />
+                      </div>
+                      <div>
+                        <label>Benötigte Mitarbeiter</label>
+                        <input
+                          type="number"
+                          min="1"
+                          value={editingShift.requiredEmployees}
+                          onChange={(e) => setEditingShift({ ...editingShift, requiredEmployees: parseInt(e.target.value) })}
+                          style={{ width: '100%', padding: '8px', borderRadius: '4px', border: '1px solid #ddd' }}
+                        />
+                      </div>
+                      <div style={{ display: 'flex', gap: '10px', alignItems: 'flex-end' }}>
+                        <button
+                          onClick={() => handleUpdateShift(editingShift)}
+                          style={{
+                            padding: '8px 16px',
+                            backgroundColor: '#2ecc71',
+                            color: 'white',
+                            border: 'none',
+                            borderRadius: '4px',
+                            cursor: 'pointer'
+                          }}
+                        >
+                          Speichern
+                        </button>
+                        <button
+                          onClick={() => setEditingShift(null)}
+                          style={{
+                            padding: '8px 16px',
+                            backgroundColor: '#95a5a6',
+                            color: 'white',
+                            border: 'none',
+                            borderRadius: '4px',
+                            cursor: 'pointer'
+                          }}
+                        >
+                          Abbrechen
+                        </button>
+                      </div>
+                    </div>
+                  ) : (
+                    <>
+                      <div style={{ fontWeight: 'bold', marginBottom: '5px' }}>
+                        {shift.name}
+                      </div>
+                      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+                        <div style={{ fontSize: '14px', color: '#666' }}>
+                          <span>Zeit: {shift.startTime.substring(0, 5)} - {shift.endTime.substring(0, 5)}</span>
+                          <span style={{ margin: '0 15px' }}>|</span>
+                          <span>Benötigte Mitarbeiter: {shift.requiredEmployees}</span>
+                          <span style={{ margin: '0 15px' }}>|</span>
+                          <span>Zugewiesen: {shift.assignedEmployees.length}/{shift.requiredEmployees}</span>
+                        </div>
+                        <div>
+                          <button
+                            onClick={() => setEditingShift(shift)}
+                            style={{
+                              padding: '6px 12px',
+                              backgroundColor: '#f1c40f',
+                              color: 'white',
+                              border: 'none',
+                              borderRadius: '4px',
+                              cursor: 'pointer',
+                              marginRight: '8px'
+                            }}
+                          >
+                            Bearbeiten
+                          </button>
+                          <button
+                            onClick={() => handleDeleteShift(shift.id)}
+                            style={{
+                              padding: '6px 12px',
+                              backgroundColor: '#e74c3c',
+                              color: 'white',
+                              border: 'none',
+                              borderRadius: '4px',
+                              cursor: 'pointer'
+                            }}
+                          >
+                            Löschen
+                          </button>
+                        </div>
+                      </div>
+                    </>
+                  )}
+                </div>
+              ))}
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+};
+
+export default ShiftPlanEdit;

frontend/src/pages/ShiftPlans/ShiftPlanView.tsx

@@ -0,0 +1,292 @@
+// frontend/src/pages/ShiftPlans/ShiftPlanView.tsx
+import React, { useState, useEffect } from 'react';
+import { useParams, useNavigate } from 'react-router-dom';
+import { useAuth } from '../../contexts/AuthContext';
+import { shiftPlanService, ShiftPlan } from '../../services/shiftPlanService';
+import { useNotification } from '../../contexts/NotificationContext';
+
+const ShiftPlanView: React.FC = () => {
+  const { id } = useParams<{ id: string }>();
+  const navigate = useNavigate();
+  const { hasRole } = useAuth();
+  const { showNotification } = useNotification();
+  const [shiftPlan, setShiftPlan] = useState<ShiftPlan | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    loadShiftPlan();
+  }, [id]);
+
+  const loadShiftPlan = async () => {
+    if (!id) return;
+    try {
+      const plan = await shiftPlanService.getShiftPlan(id);
+      setShiftPlan(plan);
+    } catch (error) {
+      console.error('Error loading shift plan:', error);
+      showNotification({
+        type: 'error',
+        title: 'Fehler',
+        message: 'Der Schichtplan konnte nicht geladen werden.'
+      });
+      navigate('/shift-plans');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const formatDate = (dateString: string | undefined): string => {
+    if (!dateString) return 'Kein Datum';
+    
+    const date = new Date(dateString);
+    
+    if (isNaN(date.getTime())) {
+      return 'Ungültiges Datum';
+    }
+    
+    return date.toLocaleDateString('de-DE', {
+      weekday: 'long',
+      day: '2-digit',
+      month: '2-digit',
+      year: 'numeric'
+    });
+  };
+
+  const formatTime = (timeString: string) => {
+    return timeString.substring(0, 5);
+  };
+
+  // Get unique shift types and their staffing per weekday
+  const getTimetableData = () => {
+    if (!shiftPlan) return { shifts: [], weekdays: [] };
+
+    // Get all unique shift types (name + time combination)
+    const shiftTypes = Array.from(new Set(
+      shiftPlan.shifts.map(shift => 
+        `${shift.name}|${shift.startTime}|${shift.endTime}`
+      )
+    )).map(shiftKey => {
+      const [name, startTime, endTime] = shiftKey.split('|');
+      return { name, startTime, endTime };
+    });
+
+    // Weekdays (1=Monday, 7=Sunday)
+    const weekdays = [1, 2, 3, 4, 5, 6, 7];
+
+    // For each shift type and weekday, calculate staffing
+    const timetableShifts = shiftTypes.map(shiftType => {
+      const weekdayData: Record<number, string> = {};
+      
+      weekdays.forEach(weekday => {
+        // Find all shifts of this type on this weekday
+        const shiftsOnDay = shiftPlan.shifts.filter(shift => {
+          const date = new Date(shift.date);
+          const dayOfWeek = date.getDay() === 0 ? 7 : date.getDay(); // Convert to 1-7 (Mon-Sun)
+          return dayOfWeek === weekday && 
+                 shift.name === shiftType.name &&
+                 shift.startTime === shiftType.startTime &&
+                 shift.endTime === shiftType.endTime;
+        });
+
+        if (shiftsOnDay.length === 0) {
+          weekdayData[weekday] = '';
+        } else {
+          const totalAssigned = shiftsOnDay.reduce((sum, shift) => sum + shift.assignedEmployees.length, 0);
+          const totalRequired = shiftsOnDay.reduce((sum, shift) => sum + shift.requiredEmployees, 0);
+          weekdayData[weekday] = `${totalAssigned}/${totalRequired}`;
+        }
+      });
+
+      return {
+        ...shiftType,
+        displayName: `${shiftType.name} (${formatTime(shiftType.startTime)}–${formatTime(shiftType.endTime)})`,
+        weekdayData
+      };
+    });
+
+    return {
+      shifts: timetableShifts,
+      weekdays: weekdays.map(day => ({
+        id: day,
+        name: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'][day === 7 ? 0 : day]
+      }))
+    };
+  };
+
+  if (loading) {
+    return <div>Lade Schichtplan...</div>;
+  }
+
+  if (!shiftPlan) {
+    return <div>Schichtplan nicht gefunden</div>;
+  }
+
+  const timetableData = getTimetableData();
+
+  return (
+    <div style={{ padding: '20px' }}>
+      <div style={{ 
+        display: 'flex', 
+        justifyContent: 'space-between', 
+        alignItems: 'center',
+        marginBottom: '30px' 
+      }}>
+        <div>
+          <h1>{shiftPlan.name}</h1>
+          <p style={{ color: '#666', marginTop: '5px' }}>
+            Zeitraum: {formatDate(shiftPlan.startDate)} - {formatDate(shiftPlan.endDate)}
+          </p>
+          <p style={{ color: '#666', marginTop: '5px' }}>
+            Status: <span style={{
+              color: shiftPlan.status === 'published' ? '#2ecc71' : '#f1c40f',
+              fontWeight: 'bold'
+            }}>
+              {shiftPlan.status === 'published' ? 'Veröffentlicht' : 'Entwurf'}
+            </span>
+          </p>
+        </div>
+        <div>
+          {hasRole(['admin', 'instandhalter']) && (
+            <button
+              onClick={() => navigate(`/shift-plans/${id}/edit`)}
+              style={{
+                padding: '8px 16px',
+                backgroundColor: '#f1c40f',
+                color: 'white',
+                border: 'none',
+                borderRadius: '4px',
+                cursor: 'pointer',
+                marginRight: '10px'
+              }}
+            >
+              Bearbeiten
+            </button>
+          )}
+          <button
+            onClick={() => navigate('/shift-plans')}
+            style={{
+              padding: '8px 16px',
+              backgroundColor: '#95a5a6',
+              color: 'white',
+              border: 'none',
+              borderRadius: '4px',
+              cursor: 'pointer'
+            }}
+          >
+            Zurück
+          </button>
+        </div>
+      </div>
+
+      <div style={{
+        backgroundColor: 'white',
+        borderRadius: '8px',
+        padding: '20px',
+        boxShadow: '0 2px 4px rgba(0,0,0,0.1)'
+      }}>
+        <div style={{ marginBottom: '20px' }}>
+          <div>Zeitraum: {formatDate(shiftPlan.startDate)} - {formatDate(shiftPlan.endDate)}</div>
+          <div>Status: <span style={{
+            color: shiftPlan.status === 'published' ? '#2ecc71' : '#f1c40f',
+            fontWeight: 'bold'
+          }}>
+            {shiftPlan.status === 'published' ? 'Veröffentlicht' : 'Entwurf'}
+          </span></div>
+        </div>
+
+        {/* Timetable */}
+        <div style={{ marginTop: '30px' }}>
+          <h3>Schichtplan</h3>
+          
+          {timetableData.shifts.length === 0 ? (
+            <div style={{
+              textAlign: 'center',
+              padding: '40px',
+              color: '#666',
+              fontStyle: 'italic'
+            }}>
+              Keine Schichten für diesen Zeitraum konfiguriert
+            </div>
+          ) : (
+            <div style={{
+              overflowX: 'auto',
+              marginTop: '20px'
+            }}>
+              <table style={{
+                width: '100%',
+                borderCollapse: 'collapse',
+                backgroundColor: 'white'
+              }}>
+                <thead>
+                  <tr style={{ backgroundColor: '#f8f9fa' }}>
+                    <th style={{
+                      padding: '12px 16px',
+                      textAlign: 'left',
+                      border: '1px solid #dee2e6',
+                      fontWeight: 'bold',
+                      minWidth: '200px'
+                    }}>
+                      Schicht (Zeit)
+                    </th>
+                    {timetableData.weekdays.map(weekday => (
+                      <th key={weekday.id} style={{
+                        padding: '12px 16px',
+                        textAlign: 'center',
+                        border: '1px solid #dee2e6',
+                        fontWeight: 'bold',
+                        minWidth: '80px'
+                      }}>
+                        {weekday.name}
+                      </th>
+                    ))}
+                  </tr>
+                </thead>
+                <tbody>
+                  {timetableData.shifts.map((shift, index) => (
+                    <tr key={index} style={{
+                      backgroundColor: index % 2 === 0 ? 'white' : '#f8f9fa'
+                    }}>
+                      <td style={{
+                        padding: '12px 16px',
+                        border: '1px solid #dee2e6',
+                        fontWeight: '500'
+                      }}>
+                        {shift.displayName}
+                      </td>
+                      {timetableData.weekdays.map(weekday => (
+                        <td key={weekday.id} style={{
+                          padding: '12px 16px',
+                          border: '1px solid #dee2e6',
+                          textAlign: 'center',
+                          color: shift.weekdayData[weekday.id] ? '#2c3e50' : '#bdc3c7'
+                        }}>
+                          {shift.weekdayData[weekday.id] || '–'}
+                        </td>
+                      ))}
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          )}
+        </div>
+
+        {/* Summary */}
+        {timetableData.shifts.length > 0 && (
+          <div style={{
+            marginTop: '20px',
+            padding: '12px 16px',
+            backgroundColor: '#e8f4fd',
+            borderRadius: '4px',
+            border: '1px solid #b8d4f0',
+            fontSize: '14px'
+          }}>
+            <strong>Legende:</strong> Angezeigt wird "zugewiesene/benötigte Mitarbeiter" pro Schicht und Wochentag
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default ShiftPlanView;

frontend/src/pages/ShiftTemplates/ShiftTemplateEditor.tsx

@@ -1,22 +1,20 @@
 // frontend/src/pages/ShiftTemplates/ShiftTemplateEditor.tsx
 import React, { useState, useEffect } from 'react';
 import { useParams, useNavigate } from 'react-router-dom';
-import { ShiftTemplate, TemplateShift, DEFAULT_DAYS } from '../../types/shiftTemplate';
+import { TemplateShiftSlot, TemplateShift, TemplateShiftTimeRange, DEFAULT_DAYS } from '../../types/shiftTemplate';
 import { shiftTemplateService } from '../../services/shiftTemplateService';
 import ShiftDayEditor from './components/ShiftDayEditor';
 import DefaultTemplateView from './components/DefaultTemplateView';
 import styles from './ShiftTemplateEditor.module.css';
 
-interface ExtendedTemplateShift extends Omit<TemplateShift, 'id'> {
+interface ExtendedTemplateShift extends Omit<TemplateShiftSlot, 'id'> {
   id?: string;
   isPreview?: boolean;
 }
 
 const defaultShift: ExtendedTemplateShift = {
   dayOfWeek: 1, // Montag
-  name: '',
-  startTime: '08:00',
-  endTime: '12:00',
+  timeRange: { id: '', name: '', startTime: '', endTime: '' },
   requiredEmployees: 1,
   color: '#3498db'
 };
@@ -26,7 +24,7 @@ const ShiftTemplateEditor: React.FC = () => {
   const navigate = useNavigate();
   const isEditing = !!id;
 
-  const [template, setTemplate] = useState<Omit<ShiftTemplate, 'id' | 'createdAt' | 'createdBy'>>({
+  const [template, setTemplate] = useState<Omit<TemplateShift, 'id' | 'createdAt' | 'createdBy'>>({
     name: '',
     description: '',
     shifts: [],
@@ -83,11 +81,13 @@ const ShiftTemplateEditor: React.FC = () => {
   };
 
   const addShift = (dayOfWeek: number) => {
-    const newShift: TemplateShift = {
+    const newShift: TemplateShiftSlot = {
       ...defaultShift,
       id: Date.now().toString(),
       dayOfWeek,
-      name: `Schicht ${template.shifts.filter(s => s.dayOfWeek === dayOfWeek).length + 1}`
+      timeRange: { ...defaultShift.timeRange, id: Date.now().toString() },
+      requiredEmployees: defaultShift.requiredEmployees,
+      color: defaultShift.color
     };
     
     setTemplate(prev => ({
@@ -113,7 +113,7 @@ const ShiftTemplateEditor: React.FC = () => {
   };
 
   // Preview-Daten für die DefaultTemplateView vorbereiten
-  const previewTemplate: ShiftTemplate = {
+  const previewTemplate: TemplateShift = {
     id: 'preview',
     name: template.name || 'Vorschau',
     description: template.description,

frontend/src/pages/ShiftTemplates/ShiftTemplateList.tsx

@@ -1,17 +1,17 @@
 // frontend/src/pages/ShiftTemplates/ShiftTemplateList.tsx
 import React, { useState, useEffect } from 'react';
 import { Link } from 'react-router-dom';
-import { ShiftTemplate } from '../../types/shiftTemplate';
+import { TemplateShift } from '../../types/shiftTemplate';
 import { shiftTemplateService } from '../../services/shiftTemplateService';
 import { useAuth } from '../../contexts/AuthContext';
 import DefaultTemplateView from './components/DefaultTemplateView';
 import styles from './ShiftTemplateList.module.css';
 
 const ShiftTemplateList: React.FC = () => {
-  const [templates, setTemplates] = useState<ShiftTemplate[]>([]);
+  const [templates, setTemplates] = useState<TemplateShift[]>([]);
   const [loading, setLoading] = useState(true);
   const { hasRole } = useAuth();
-  const [selectedTemplate, setSelectedTemplate] = useState<ShiftTemplate | null>(null);
+  const [selectedTemplate, setSelectedTemplate] = useState<TemplateShift | null>(null);
 
   useEffect(() => {
     loadTemplates();

frontend/src/pages/ShiftTemplates/components/DefaultTemplateView.tsx

@@ -1,10 +1,10 @@
 // frontend/src/pages/ShiftTemplates/components/DefaultTemplateView.tsx
 import React from 'react';
-import { ShiftTemplate } from '../../../types/shiftTemplate';
+import { TemplateShift } from '../../../types/shiftTemplate';
 import styles from './DefaultTemplateView.module.css';
 
 interface DefaultTemplateViewProps {
-  template: ShiftTemplate;
+  template: TemplateShift;
 }
 
 const DefaultTemplateView: React.FC<DefaultTemplateViewProps> = ({ template }) => {
@@ -38,9 +38,9 @@ const DefaultTemplateView: React.FC<DefaultTemplateViewProps> = ({ template }) =
             <div className={styles.shiftsContainer}>
               {shiftsByDay[dayIndex]?.map(shift => (
                 <div key={shift.id} className={styles.shiftCard}>
-                  <h4>{shift.name}</h4>
+                  <h4>{shift.timeRange.name}</h4>
                   <p>
-                    {formatTime(shift.startTime)} - {formatTime(shift.endTime)}
+                    {formatTime(shift.timeRange.startTime)} - {formatTime(shift.timeRange.endTime)}
                   </p>
                 </div>
               ))}

frontend/src/pages/ShiftTemplates/components/ShiftDayEditor.tsx

@@ -1,13 +1,13 @@
 // frontend/src/pages/ShiftTemplates/components/ShiftDayEditor.tsx
 import React from 'react';
-import { TemplateShift } from '../../../types/shiftTemplate';
+import { TemplateShiftSlot } from '../../../types/shiftTemplate';
 import styles from './ShiftDayEditor.module.css';
 
 interface ShiftDayEditorProps {
   day: { id: number; name: string };
-  shifts: TemplateShift[];
+  shifts: TemplateShiftSlot[];
   onAddShift: () => void;
-  onUpdateShift: (shiftId: string, updates: Partial<TemplateShift>) => void;
+  onUpdateShift: (shiftId: string, updates: Partial<TemplateShiftSlot>) => void;
   onRemoveShift: (shiftId: string) => void;
 }
 
@@ -55,8 +55,8 @@ const ShiftDayEditor: React.FC<ShiftDayEditorProps> = ({
               <div className={styles.formGroup}>
                 <input
                   type="text"
-                  value={shift.name}
-                  onChange={(e) => onUpdateShift(shift.id, { name: e.target.value })}
+                  value={shift.timeRange.name}
+                  onChange={(e) => onUpdateShift(shift.id, { timeRange: { ...shift.timeRange, name: e.target.value } })}
                   placeholder="Schichtname"
                 />
               </div>
@@ -66,8 +66,8 @@ const ShiftDayEditor: React.FC<ShiftDayEditorProps> = ({
                   <label>Start</label>
                   <input
                     type="time"
-                    value={shift.startTime}
-                    onChange={(e) => onUpdateShift(shift.id, { startTime: e.target.value })}
+                    value={shift.timeRange.startTime}
+                    onChange={(e) => onUpdateShift(shift.id, { timeRange: { ...shift.timeRange, startTime: e.target.value } })}
                   />
                 </div>
 
@@ -75,8 +75,8 @@ const ShiftDayEditor: React.FC<ShiftDayEditorProps> = ({
                   <label>Ende</label>
                   <input
                     type="time"
-                    value={shift.endTime}
-                    onChange={(e) => onUpdateShift(shift.id, { endTime: e.target.value })}
+                    value={shift.timeRange.endTime}
+                    onChange={(e) => onUpdateShift(shift.id, { timeRange: { ...shift.timeRange, endTime: e.target.value } })}
                   />
                 </div>
               </div>

frontend/src/services/shiftPlanService.ts

@@ -50,7 +50,20 @@ export const shiftPlanService = {
       throw new Error('Fehler beim Laden der Schichtpläne');
     }
     
-    return response.json();
+    const data = await response.json();
+    
+    // Convert snake_case to camelCase
+    return data.map((plan: any) => ({
+      id: plan.id,
+      name: plan.name,
+      startDate: plan.start_date, // Convert here
+      endDate: plan.end_date,     // Convert here
+      templateId: plan.template_id,
+      status: plan.status,
+      createdBy: plan.created_by,
+      createdAt: plan.created_at,
+      shifts: plan.shifts || []
+    }));
   },
 
   async getShiftPlan(id: string): Promise<ShiftPlan> {
@@ -69,7 +82,20 @@ export const shiftPlanService = {
       throw new Error('Schichtplan nicht gefunden');
     }
     
-    return response.json();
+    const data = await response.json();
+    
+    // Convert snake_case to camelCase
+    return {
+      id: data.id,
+      name: data.name,
+      startDate: data.start_date, // Convert here
+      endDate: data.end_date,     // Convert here
+      templateId: data.template_id,
+      status: data.status,
+      createdBy: data.created_by,
+      createdAt: data.created_at,
+      shifts: data.shifts || []
+    };
   },
 
   async createShiftPlan(plan: CreateShiftPlanRequest): Promise<ShiftPlan> {
@@ -130,5 +156,60 @@ export const shiftPlanService = {
       }
       throw new Error('Fehler beim Löschen des Schichtplans');
     }
+  },
+
+  async updateShiftPlanShift(planId: string, shift: ShiftPlanShift): Promise<void> {
+    const response = await fetch(`${API_BASE}/${planId}/shifts/${shift.id}`, {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        ...authService.getAuthHeaders()
+      },
+      body: JSON.stringify(shift)
+    });
+
+    if (!response.ok) {
+      if (response.status === 401) {
+        authService.logout();
+        throw new Error('Nicht authorisiert - bitte erneut anmelden');
+      }
+      throw new Error('Fehler beim Aktualisieren der Schicht');
+    }
+  },
+
+  async addShiftPlanShift(planId: string, shift: Omit<ShiftPlanShift, 'id' | 'shiftPlanId' | 'assignedEmployees'>): Promise<void> {
+    const response = await fetch(`${API_BASE}/${planId}/shifts`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        ...authService.getAuthHeaders()
+      },
+      body: JSON.stringify(shift)
+    });
+
+    if (!response.ok) {
+      if (response.status === 401) {
+        authService.logout();
+        throw new Error('Nicht authorisiert - bitte erneut anmelden');
+      }
+      throw new Error('Fehler beim Hinzufügen der Schicht');
+    }
+  },
+
+  async deleteShiftPlanShift(planId: string, shiftId: string): Promise<void> {
+    const response = await fetch(`${API_BASE}/${planId}/shifts/${shiftId}`, {
+      method: 'DELETE',
+      headers: {
+        ...authService.getAuthHeaders()
+      }
+    });
+
+    if (!response.ok) {
+      if (response.status === 401) {
+        authService.logout();
+        throw new Error('Nicht authorisiert - bitte erneut anmelden');
+      }
+      throw new Error('Fehler beim Löschen der Schicht');
+    }
   }
 };

frontend/src/services/shiftTemplateService.ts

@@ -1,11 +1,11 @@
 // frontend/src/services/shiftTemplateService.ts
-import { ShiftTemplate, TemplateShift } from '../types/shiftTemplate';
+import { TemplateShift } from '../types/shiftTemplate';
 import { authService } from './authService';
 
-const API_BASE = 'http://localhost:3002/api/shift-templates';
+const API_BASE = 'http://localhost:3001/api/shift-templates';
 
 export const shiftTemplateService = {
-  async getTemplates(): Promise<ShiftTemplate[]> {
+  async getTemplates(): Promise<TemplateShift[]> {
     const response = await fetch(API_BASE, {
       headers: {
         'Content-Type': 'application/json',
@@ -23,14 +23,14 @@ export const shiftTemplateService = {
     
     const templates = await response.json();
     // Sortiere die Vorlagen so, dass die Standard-Vorlage immer zuerst kommt
-    return templates.sort((a: ShiftTemplate, b: ShiftTemplate) => {
+    return templates.sort((a: TemplateShift, b: TemplateShift) => {
       if (a.isDefault && !b.isDefault) return -1;
       if (!a.isDefault && b.isDefault) return 1;
       return new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime();
     });
   },
 
-  async getTemplate(id: string): Promise<ShiftTemplate> {
+  async getTemplate(id: string): Promise<TemplateShift> {
     const response = await fetch(`${API_BASE}/${id}`, {
       headers: {
         'Content-Type': 'application/json',
@@ -49,7 +49,7 @@ export const shiftTemplateService = {
     return response.json();
   },
 
-  async createTemplate(template: Omit<ShiftTemplate, 'id' | 'createdAt' | 'createdBy'>): Promise<ShiftTemplate> {
+  async createTemplate(template: Omit<TemplateShift, 'id' | 'createdAt' | 'createdBy'>): Promise<TemplateShift> {
     // Wenn diese Vorlage als Standard markiert ist,
     // fragen wir den Benutzer, ob er wirklich die Standard-Vorlage ändern möchte
     if (template.isDefault) {
@@ -81,7 +81,7 @@ export const shiftTemplateService = {
     return response.json();
   },
 
-  async updateTemplate(id: string, template: Partial<ShiftTemplate>): Promise<ShiftTemplate> {
+  async updateTemplate(id: string, template: Partial<TemplateShift>): Promise<TemplateShift> {
     const response = await fetch(`${API_BASE}/${id}`, {
       method: 'PUT',
       headers: {

frontend/src/types/employee.ts

@@ -35,4 +35,5 @@ export interface Availability {
   startTime: string;
   endTime: string;
   isAvailable: boolean;
+  availabilityLevel: 1 | 2 | 3; // 1: bevorzugt, 2: möglich, 3: nicht möglich
 }

frontend/src/types/shiftTemplate.ts

@@ -1,28 +1,41 @@
 // frontend/src/types/shiftTemplate.ts
-export interface ShiftTemplate {
+export interface TemplateShift {
   id: string;
   name: string;
   description?: string;
-  shifts: TemplateShift[];
+  isDefault: boolean;
   createdBy: string;
   createdAt: string;
-  isDefault: boolean;
+  shifts: TemplateShiftSlot[];
 }
 
-export interface TemplateShift {
+export interface TemplateShiftSlot {
   id: string;
-  dayOfWeek: number; // 1-5 (Montag=1, Dienstag=2, ...)
-  name: string;
-  startTime: string; // "08:00"
-  endTime: string;   // "12:00"
+  dayOfWeek: number;
+  timeRange: TemplateShiftTimeRange;
   requiredEmployees: number;
-  color?: string; // Für visuelle Darstellung
+  color?: string;
 }
 
+export interface TemplateShiftTimeRange {
+  id: string;
+  name: string;     // e.g., "Frühschicht", "Spätschicht"
+  startTime: string;
+  endTime: string;
+}
+
+export const DEFAULT_TIME_SLOTS: TemplateShiftTimeRange[] = [
+  { id: 'morning', name: 'Vormittag', startTime: '08:00', endTime: '12:00' },
+  { id: 'afternoon', name: 'Nachmittag', startTime: '11:30', endTime: '15:30' },
+];
+
+
 export const DEFAULT_DAYS = [
   { id: 1, name: 'Montag' },
   { id: 2, name: 'Dienstag' },
   { id: 3, name: 'Donnerstag' },
   { id: 4, name: 'Mittwoch' },
   { id: 5, name: 'Freitag' },
+  { id: 6, name: 'Samstag' },
+  { id: 7, name: 'Sonntag' }
 ];