Dateien nach "backend/src/routes" hochladen

backend/src/routes/dashboard.js

@@ -68,3 +68,46 @@ router.put('/note', authenticate, (req, res) => {
 });
 
 module.exports = router;
+
+// ── Statistiken ───────────────────────────────────────────────────────────────
+router.get('/stats', authenticate, (req, res) => {
+  const uid = req.user.id;
+
+  const orders = db.prepare(`
+    SELECT status, bezahlt,
+      SUM(COALESCE(custom_price_sum_view,0)) AS revenue
+    FROM (
+      SELECT o.status, o.bezahlt,
+        SUM(COALESCE(oi.custom_price,0)*COALESCE(oi.stueckzahl,0)) AS custom_price_sum_view
+      FROM orders o
+      LEFT JOIN order_items oi ON oi.order_id=o.id
+      WHERE o.user_id=?
+      GROUP BY o.id
+    )
+    GROUP BY status, bezahlt
+  `).all(uid);
+
+  const totalOrders      = db.prepare('SELECT COUNT(*) c FROM orders WHERE user_id=?').get(uid).c;
+  const bezahltOrders    = db.prepare('SELECT COUNT(*) c FROM orders WHERE user_id=? AND bezahlt=1').get(uid).c;
+  const totalRevenue     = db.prepare(`
+    SELECT COALESCE(SUM(oi.custom_price*oi.stueckzahl),0) s
+    FROM orders o JOIN order_items oi ON oi.order_id=o.id
+    WHERE o.user_id=? AND o.bezahlt=1 AND oi.custom_price IS NOT NULL
+  `).get(uid).s;
+  const offeneRevenue    = db.prepare(`
+    SELECT COALESCE(SUM(oi.custom_price*oi.stueckzahl),0) s
+    FROM orders o JOIN order_items oi ON oi.order_id=o.id
+    WHERE o.user_id=? AND o.bezahlt=0 AND oi.custom_price IS NOT NULL AND o.status!='warteliste'
+  `).get(uid).s;
+  const thisMonth = new Date();
+  thisMonth.setDate(1); thisMonth.setHours(0,0,0,0);
+  const ordersThisMonth  = db.prepare('SELECT COUNT(*) c FROM orders WHERE user_id=? AND created_at>=?').get(uid, thisMonth.toISOString()).c;
+  const totalCalcs       = db.prepare('SELECT COUNT(*) c FROM calculations WHERE user_id=?').get(uid).c;
+
+  const byStatus = { warteliste:0, in_arbeit:0, fertig:0 };
+  for (const r of db.prepare('SELECT status, COUNT(*) c FROM orders WHERE user_id=? AND bezahlt=0 GROUP BY status').all(uid)) {
+    byStatus[r.status] = r.c;
+  }
+
+  res.json({ totalOrders, bezahltOrders, totalRevenue, offeneRevenue, ordersThisMonth, totalCalcs, byStatus });
+});