Initial SMM panel implementation

src/services/admin.service.js

@@ -0,0 +1,52 @@
+const { getDb } = require('../config/db');
+const { formatMoney, parseMoney } = require('../utils/money');
+
+function calculateProviderCost(providerPrice, quantity) {
+  return (parseMoney(String(providerPrice)) * BigInt(quantity) + 500n) / 1000n;
+}
+
+async function listAdminUsers() {
+  return getDb()('users')
+    .select('id', 'username', 'email', 'role', 'status', 'balance', 'created_at', 'updated_at')
+    .orderBy('created_at', 'desc')
+    .orderBy('id', 'desc');
+}
+
+async function getAdminStats() {
+  const db = getDb();
+  const [[usersTotal], [activeUsers], [pendingDeposits], [pendingOrders], orders] = await Promise.all([
+    db('users').count({ count: '*' }),
+    db('users').where({ status: 'active' }).count({ count: '*' }),
+    db('deposits').where({ status: 'pending' }).count({ count: '*' }),
+    db('orders').whereIn('status', ['pending', 'processing', 'in_progress']).count({ count: '*' }),
+    db('orders')
+      .join('services', 'services.id', 'orders.service_id')
+      .select('orders.charge', 'orders.quantity', 'services.provider_price', 'orders.status')
+  ]);
+  let grossSales = 0n;
+  let providerCost = 0n;
+
+  for (const order of orders) {
+    if (!['processing', 'in_progress', 'completed', 'partial'].includes(order.status)) {
+      continue;
+    }
+
+    grossSales += parseMoney(order.charge);
+    providerCost += calculateProviderCost(order.provider_price, order.quantity);
+  }
+
+  return {
+    users_total: Number(usersTotal.count),
+    users_active: Number(activeUsers.count),
+    deposits_pending: Number(pendingDeposits.count),
+    orders_pending: Number(pendingOrders.count),
+    gross_sales: formatMoney(grossSales),
+    provider_cost: formatMoney(providerCost),
+    profit: formatMoney(grossSales - providerCost)
+  };
+}
+
+module.exports = {
+  getAdminStats,
+  listAdminUsers
+};