feat: add room dashboard with KPI bar and floor grid

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/hotel_hacienda/src/controllers/dashboard.controller.js

@@ -0,0 +1,65 @@
+const pool = require('../db/connection');
+
+const getKPIs = async (req, res) => {
+  try {
+    const today = new Date().toISOString().split('T')[0];
+
+    const [totalRooms, availableRooms, checkIns, checkOuts] = await Promise.all([
+      pool.query('SELECT COUNT(*) as count FROM rooms'),
+      pool.query("SELECT COUNT(*) as count FROM rooms WHERE status = 'available'"),
+      pool.query("SELECT COUNT(*) as count FROM reservations WHERE check_in = $1 AND status IN ('confirmed', 'checked_in')", [today]),
+      pool.query("SELECT COUNT(*) as count FROM reservations WHERE check_out = $1 AND status = 'checked_in'", [today]),
+    ]);
+
+    const total = parseInt(totalRooms.rows[0].count);
+    const available = parseInt(availableRooms.rows[0].count);
+    const occupancy = total > 0 ? Math.round(((total - available) / total) * 100) : 0;
+
+    res.json({
+      occupancy,
+      availableRooms: available,
+      totalRooms: total,
+      todayCheckIns: parseInt(checkIns.rows[0].count),
+      todayCheckOuts: parseInt(checkOuts.rows[0].count),
+    });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ message: 'Error al obtener KPIs' });
+  }
+};
+
+const getWeeklyRevenue = async (req, res) => {
+  try {
+    const result = await pool.query(`
+      SELECT DATE(check_out) as day, COALESCE(SUM(total_amount), 0) as revenue
+      FROM reservations
+      WHERE check_out >= CURRENT_DATE - INTERVAL '7 days' AND status = 'checked_out'
+      GROUP BY DATE(check_out) ORDER BY day
+    `);
+    res.json({ weeklyRevenue: result.rows });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ message: 'Error al obtener ingresos semanales' });
+  }
+};
+
+const getTodayArrivals = async (req, res) => {
+  try {
+    const today = new Date().toISOString().split('T')[0];
+    const result = await pool.query(`
+      SELECT r.id, r.check_in, r.check_out, r.room_id, r.status,
+             g.first_name, g.last_name, g.phone
+      FROM reservations r
+      JOIN guests g ON g.id = r.guest_id
+      WHERE (r.check_in = $1 OR r.check_out = $1)
+        AND r.status IN ('confirmed', 'checked_in')
+      ORDER BY r.check_in
+    `, [today]);
+    res.json({ arrivals: result.rows });
+  } catch (error) {
+    console.error(error);
+    res.status(500).json({ message: 'Error al obtener llegadas' });
+  }
+};
+
+module.exports = { getKPIs, getWeeklyRevenue, getTodayArrivals };