refactor

src/routes/export.js

@@ -0,0 +1,66 @@
+const express = require('express');
+const router = express.Router();
+const { calculateNetHours } = require('../utils/timeCalculator');
+
+/**
+ * Initialize export routes with database instance
+ * @param {Database} db - SQLite database instance
+ * @returns {Router} - Configured Express router
+ */
+function createExportRouter(db) {
+  /**
+   * GET /api/export?from=YYYY-MM-DD&to=YYYY-MM-DD
+   * Export entries as CSV
+   */
+  router.get('/', (req, res) => {
+    try {
+      const { from, to } = req.query;
+      
+      let query = 'SELECT * FROM entries';
+      const params = [];
+      
+      if (from && to) {
+        query += ' WHERE date >= ? AND date <= ?';
+        params.push(from, to);
+      } else if (from) {
+        query += ' WHERE date >= ?';
+        params.push(from);
+      } else if (to) {
+        query += ' WHERE date <= ?';
+        params.push(to);
+      }
+      
+      query += ' ORDER BY date ASC, start_time ASC';
+      
+      const stmt = db.prepare(query);
+      const entries = stmt.all(...params);
+      
+      // Generate CSV with German formatting
+      let csv = 'Datum,Startzeit,Endzeit,Pause in Minuten,Gesamtstunden\n';
+      
+      entries.forEach(entry => {
+        const calculated = calculateNetHours(entry.start_time, entry.end_time, entry.pause_minutes);
+        
+        // Format date as DD.MM.YYYY
+        const [year, month, day] = entry.date.split('-');
+        const formattedDate = `${day}.${month}.${year}`;
+        
+        // Use comma as decimal separator for hours
+        const netHoursFormatted = calculated.netHours.toFixed(2).replace('.', ',');
+        
+        csv += `${formattedDate},${entry.start_time},${entry.end_time},${entry.pause_minutes},${netHoursFormatted}\n`;
+      });
+      
+      res.setHeader('Content-Type', 'text/csv; charset=utf-8');
+      res.setHeader('Content-Disposition', 'attachment; filename="zeiterfassung.csv"');
+      res.send(csv);
+    } catch (error) {
+      console.error('Error exporting entries:', error);
+      res.status(500).json({ error: 'Failed to export entries' });
+    }
+  });
+
+  return router;
+}
+
+module.exports = createExportRouter;