Add database backup and restore functionality for administrators

Introduce endpoints and UI for managing PostgreSQL database backups, including automatic nightly backups, manual backups, and the ability to download and delete backup files.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7c468936-2a88-4686-ac0a-84921a45222d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/7c468936-2a88-4686-ac0a-84921a45222d/B7k6m01

server/routes.ts

@@ -39,6 +39,7 @@ import {
 import { hasPermission } from "@shared/permissions";
 import { z } from "zod";
 import { invoiceVerificationService } from "./invoiceVerification";
+import { backupService } from "./backupService";
 
 export async function registerRoutes(app: Express): Promise<Server> {
   // Health check endpoint for Docker
@@ -2338,6 +2339,55 @@ RÉSUMÉ DU SCAN
     }
   });
 
+  // Backup management routes (Admin only)
+  app.get('/api/backups', isAuthenticated, requireAdmin, async (req: any, res) => {
+    try {
+      const backups = await backupService.getBackupList();
+      res.json(backups);
+    } catch (error) {
+      console.error("Error fetching backups:", error);
+      res.status(500).json({ message: "Failed to fetch backups" });
+    }
+  });
+
+  app.post('/api/backups', isAuthenticated, requireAdmin, async (req: any, res) => {
+    try {
+      const backup = await backupService.createBackup('manual');
+      res.json(backup);
+    } catch (error) {
+      console.error("Error creating backup:", error);
+      res.status(500).json({ message: "Failed to create backup" });
+    }
+  });
+
+  app.get('/api/backups/:filename/download', isAuthenticated, requireAdmin, async (req: any, res) => {
+    try {
+      const { filename } = req.params;
+      const filepath = await backupService.downloadBackup(filename);
+      
+      res.download(filepath, filename, (err) => {
+        if (err) {
+          console.error("Error downloading backup:", err);
+          res.status(404).json({ message: "Backup file not found" });
+        }
+      });
+    } catch (error) {
+      console.error("Error downloading backup:", error);
+      res.status(500).json({ message: "Failed to download backup" });
+    }
+  });
+
+  app.delete('/api/backups/:filename', isAuthenticated, requireAdmin, async (req: any, res) => {
+    try {
+      const { filename } = req.params;
+      await backupService.deleteBackup(filename);
+      res.json({ message: "Backup deleted successfully" });
+    } catch (error) {
+      console.error("Error deleting backup:", error);
+      res.status(500).json({ message: "Failed to delete backup" });
+    }
+  });
+
   // Create server instance
   const httpServer = createServer(app);