snooze vor expired, contracts, display snoozed contracts if an item is missing, un snooze implemented, fixed invoice upload bug

backend/src/controllers/contract.controller.ts

@@ -1,8 +1,11 @@
 import { Request, Response } from 'express';
+import { PrismaClient } from '@prisma/client';
 import * as contractService from '../services/contract.service.js';
 import * as contractCockpitService from '../services/contractCockpit.service.js';
 import { ApiResponse, AuthRequest } from '../types/index.js';
 
+const prisma = new PrismaClient();
+
 export async function getContracts(req: AuthRequest, res: Response): Promise<void> {
   try {
     const { customerId, type, status, search, page, limit, tree } = req.query;
@@ -194,3 +197,48 @@ export async function getCockpit(req: AuthRequest, res: Response): Promise<void>
     } as ApiResponse);
   }
 }
+
+// ==================== SNOOZE (VERTRAG ZURÜCKSTELLEN) ====================
+
+export async function snoozeContract(req: Request, res: Response): Promise<void> {
+  try {
+    const id = parseInt(req.params.id);
+    const { nextReviewDate, months } = req.body;
+
+    let reviewDate: Date | null = null;
+
+    if (nextReviewDate) {
+      // Explizites Datum angegeben
+      reviewDate = new Date(nextReviewDate);
+    } else if (months) {
+      // Monate angegeben → berechne Datum
+      reviewDate = new Date();
+      reviewDate.setMonth(reviewDate.getMonth() + months);
+    }
+    // Wenn beides leer → nextReviewDate wird auf null gesetzt (Snooze aufheben)
+
+    const updated = await prisma.contract.update({
+      where: { id },
+      data: { nextReviewDate: reviewDate },
+      select: {
+        id: true,
+        contractNumber: true,
+        nextReviewDate: true,
+      },
+    });
+
+    res.json({
+      success: true,
+      data: updated,
+      message: reviewDate
+        ? `Vertrag zurückgestellt bis ${reviewDate.toLocaleDateString('de-DE')}`
+        : 'Zurückstellung aufgehoben',
+    } as ApiResponse);
+  } catch (error) {
+    console.error('Snooze error:', error);
+    res.status(500).json({
+      success: false,
+      error: 'Fehler beim Zurückstellen des Vertrags',
+    } as ApiResponse);
+  }
+}