Initial commit

Next.js + Express event management app for Hope Family Church.

backend/src/controllers/statsController.js

@@ -0,0 +1,141 @@
+const prisma = require('../config/db');
+const { safeErrorMessage } = require('../utils/errorUtils');
+
+// Shared building blocks for the per-dashboard stats endpoints below. Each dashboard
+// (staff/supervisor/admin) gets exactly one endpoint that returns only what it renders,
+// computed with aggregate queries — never a full payments/events list shipped to the
+// client just to be reduced down to a couple of numbers.
+
+async function computeScanStats(userId) {
+  const startOfDay = new Date();
+  startOfDay.setHours(0, 0, 0, 0);
+  const whereBase = { scannedAt: { gte: startOfDay } };
+
+  const [totalToday, myToday, lastHour, byStaffRaw] = await Promise.all([
+    prisma.ticketUsage.count({ where: whereBase }),
+    prisma.ticketUsage.count({ where: { ...whereBase, scannedById: userId } }),
+    prisma.ticketUsage.count({ where: { scannedAt: { gte: new Date(Date.now() - 60 * 60 * 1000) } } }),
+    prisma.ticketUsage.groupBy({ by: ['scannedById'], where: whereBase, _count: { _all: true } }),
+  ]);
+
+  const staffIds = byStaffRaw.map((b) => b.scannedById);
+  const staffUsers = staffIds.length > 0
+    ? await prisma.user.findMany({ where: { id: { in: staffIds } }, select: { id: true, name: true } })
+    : [];
+  const nameMap = Object.fromEntries(staffUsers.map((u) => [u.id, u.name]));
+
+  return {
+    totalToday,
+    myToday,
+    lastHour,
+    byStaff: byStaffRaw.map((b) => ({ scannedById: b.scannedById, name: nameMap[b.scannedById] || 'Staff', count: b._count._all })),
+  };
+}
+
+function getRecentScans(limit = 10) {
+  return prisma.ticketUsage.findMany({
+    orderBy: { scannedAt: 'desc' },
+    take: limit,
+    select: {
+      id: true,
+      scannedAt: true,
+      quantityRedeemed: true,
+      scannedBy: { select: { id: true, name: true } },
+      ticket: {
+        select: {
+          id: true,
+          event: { select: { title: true } },
+          registrationOption: { select: { eventOption: { select: { name: true } } } },
+        },
+      },
+    },
+  });
+}
+
+function getActiveEventsCount() {
+  return prisma.event.count({ where: { isActive: true, endDate: { gte: new Date() } } });
+}
+
+async function computePaymentStats({ includeWeekMonth }) {
+  const startOfDay = new Date(new Date().setHours(0, 0, 0, 0));
+
+  const queries = [
+    prisma.payment.aggregate({ _sum: { amount: true }, where: { createdAt: { gte: startOfDay } } }),
+    prisma.payment.count({ where: { isDonation: true, createdAt: { gte: startOfDay } } }),
+  ];
+  if (includeWeekMonth) {
+    const lastWeek = new Date(startOfDay.getTime() - 7 * 24 * 60 * 60 * 1000);
+    const lastMonth = new Date(startOfDay.getTime() - 30 * 24 * 60 * 60 * 1000);
+    queries.push(
+      prisma.payment.aggregate({ _sum: { amount: true }, where: { createdAt: { gte: lastWeek } } }),
+      prisma.payment.aggregate({ _sum: { amount: true }, where: { createdAt: { gte: lastMonth } } }),
+    );
+  }
+
+  const [totalToday, donationsToday, totalWeek, totalMonth] = await Promise.all(queries);
+
+  const stats = {
+    totalToday: totalToday._sum.amount || 0,
+    donationsToday,
+  };
+  if (includeWeekMonth) {
+    stats.totalWeek = totalWeek._sum.amount || 0;
+    stats.totalMonth = totalMonth._sum.amount || 0;
+  }
+  return stats;
+}
+
+// @desc    All stats the staff dashboard needs, in one call
+// @route   GET /api/stats/staff
+// @access  Private/Staff+
+const getStaffDashboardStats = async (req, res) => {
+  try {
+    const [scanStats, recentScans] = await Promise.all([
+      computeScanStats(req.user.id),
+      getRecentScans(10),
+    ]);
+    res.json({ scanStats, recentScans });
+  } catch (error) {
+    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+  }
+};
+
+// @desc    All stats the supervisor dashboard needs, in one call
+// @route   GET /api/stats/supervisor
+// @access  Private/Supervisor+
+const getSupervisorDashboardStats = async (req, res) => {
+  try {
+    const [scanStats, recentScans, paymentStats, activeEventsCount] = await Promise.all([
+      computeScanStats(req.user.id),
+      getRecentScans(10),
+      computePaymentStats({ includeWeekMonth: false }),
+      getActiveEventsCount(),
+    ]);
+    res.json({ scanStats, recentScans, paymentStats, activeEventsCount });
+  } catch (error) {
+    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+  }
+};
+
+// @desc    All stats the admin dashboard needs, in one call
+// @route   GET /api/stats/admin
+// @access  Private/Admin
+const getAdminDashboardStats = async (req, res) => {
+  try {
+    const [scanStats, recentScans, paymentStats, activeEventsCount] = await Promise.all([
+      computeScanStats(req.user.id),
+      getRecentScans(10),
+      computePaymentStats({ includeWeekMonth: true }),
+      getActiveEventsCount(),
+    ]);
+    res.json({ scanStats, recentScans, paymentStats, activeEventsCount });
+  } catch (error) {
+    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+  }
+};
+
+module.exports = {
+  getStaffDashboardStats,
+  getSupervisorDashboardStats,
+  getAdminDashboardStats,
+};