add full dashboard: activity chart, recent entries, group photos, quick actions, active groups, top students

server.js

@@ -695,6 +695,70 @@ app.get('/api/stats', requireAdmin, async (_, res) => {
   });
 });
 
+app.get('/api/dashboard', requireAdmin, async (req, res) => {
+  const DAYS = ['Вс', 'Пн', 'Вт', 'Ср', 'Чт', 'Пт', 'Сб'];
+  const [stats, activity, active, recent, top, photos, latestPhotos] = await Promise.all([
+    (async () => {
+      const [entries, trash, groups, students, today] = await Promise.all([
+        pool.query('SELECT count(*)::int AS n FROM entries WHERE deleted_at IS NULL'),
+        pool.query('SELECT count(*)::int AS n FROM entries WHERE deleted_at IS NOT NULL'),
+        pool.query('SELECT count(*)::int AS n FROM groups'),
+        pool.query('SELECT count(DISTINCT student_name)::int AS n FROM entries WHERE deleted_at IS NULL'),
+        pool.query("SELECT count(*)::int AS n FROM entries WHERE deleted_at IS NULL AND created_at >= now()::date"),
+      ]);
+      return { entries: entries.rows[0].n, trash: trash.rows[0].n, groups: groups.rows[0].n, students: students.rows[0].n, today: today.rows[0].n };
+    })(),
+    pool.query(
+      `SELECT to_char(created_at, 'YYYY-MM-DD') AS d, count(*)::int AS n
+       FROM entries WHERE deleted_at IS NULL
+         AND created_at >= (now() - interval '13 days')::date
+       GROUP BY 1 ORDER BY 1`
+    ),
+    pool.query(
+      `SELECT * FROM groups
+       WHERE day_of_week IS NOT NULL AND time_start IS NOT NULL AND time_end IS NOT NULL
+         AND day_of_week = EXTRACT(DOW FROM (now() AT TIME ZONE 'Europe/Moscow'))::int
+         AND (now() AT TIME ZONE 'Europe/Moscow')::time BETWEEN time_start AND time_end
+       ORDER BY id`
+    ),
+    pool.query(
+      `SELECT e.id, e.student_name, e.photo_path, e.created_at, g.name AS group_name
+       FROM entries e JOIN groups g ON g.id = e.group_id
+       WHERE e.deleted_at IS NULL
+       ORDER BY e.created_at DESC LIMIT 7`
+    ),
+    pool.query(
+      `SELECT student_name, count(*)::int AS n FROM entries
+       WHERE deleted_at IS NULL GROUP BY student_name ORDER BY n DESC, student_name LIMIT 5`
+    ),
+    pool.query(
+      `SELECT gp.id, gp.photo_path, gp.caption, gp.taken_at, g.name AS group_name
+       FROM group_photos gp JOIN groups g ON g.id = gp.group_id
+       ORDER BY gp.taken_at DESC NULLS LAST, gp.created_at DESC LIMIT 8`
+    ),
+    pool.query(
+      `SELECT photo_path, taken_at FROM group_photos
+       ORDER BY taken_at DESC NULLS LAST, created_at DESC LIMIT 1`
+    ),
+  ]);
+  const activeGroups = active.rows.map(g => ({
+    id: g.id,
+    name: g.name,
+    day_label: DAYS[g.day_of_week],
+    time_start: (g.time_start || '').slice(0, 5),
+    time_end: (g.time_end || '').slice(0, 5),
+  }));
+  res.json({
+    stats: stats,
+    activity: activity.rows,
+    active_groups: activeGroups,
+    recent_entries: recent.rows,
+    top_students: top.rows,
+    photos: photos.rows,
+    latest_photo_taken: (latestPhotos.rows[0] || {}).taken_at || null,
+  });
+});
+
 app.post('/api/entries', upload.fields([{ name: 'photo', maxCount: 1 }, { name: 'files', maxCount: 10 }]), async (req, res) => {
   const { student_name, group_id, description } = req.body;
   const photo = req.files?.photo?.[0] || null;