feat: initial foundation for collaborative canteen ordering system in vanilla PHP

2026-08-27 17:29:13 +07:00
commit 5effce30cb
52 changed files with 4915 additions and 0 deletions
@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Core\Database\Database;
+use PDO;
+
+class SessionMenu
+{
+    public static function getBySessionId(int $sessionId): array
+    {
+        $db = Database::getConnection();
+        $stmt = $db->prepare("SELECT * FROM session_menus WHERE session_id = ? ORDER BY id ASC");
+        $stmt->execute([$sessionId]);
+        return $stmt->fetchAll();
+    }
+
+    public static function add(int $sessionId, string $name, float $price = 0.00): int
+    {
+        $db = Database::getConnection();
+        $stmt = $db->prepare("INSERT INTO session_menus (session_id, name, final_price) VALUES (?, ?, ?)");
+        $stmt->execute([$sessionId, trim($name), $price]);
+        return (int)$db->lastInsertId();
+    }
+
+    public static function delete(int $id): bool
+    {
+        $db = Database::getConnection();
+        $stmt = $db->prepare("DELETE FROM session_menus WHERE id = ?");
+        return $stmt->execute([$id]);
+    }
+
+    /**
+     * Update final prices from canteen bill and recalculate all employee order line items
+     */
+    public static function updatePricesAndRecalculate(int $sessionId, array $menuPrices): void
+    {
+        $db = Database::getConnection();
+        $db->beginTransaction();
+
+        try {
+            $stmtUpdateMenu = $db->prepare("UPDATE session_menus SET final_price = ? WHERE id = ? AND session_id = ?");
+            $stmtUpdateItems = $db->prepare("
+                UPDATE employee_order_items 
+                SET unit_price = ?, total_price = quantity * ? 
+                WHERE session_menu_id = ?
+            ");
+
+            foreach ($menuPrices as $menuId => $price) {
+                $menuId = (int)$menuId;
+                $price = (float)$price;
+
+                $stmtUpdateMenu->execute([$price, $menuId, $sessionId]);
+                $stmtUpdateItems->execute([$price, $price, $menuId]);
+            }
+
+            // Recalculate total_bill on employee_orders
+            $stmtOrders = $db->prepare("SELECT id FROM employee_orders WHERE session_id = ?");
+            $stmtOrders->execute([$sessionId]);
+            $orders = $stmtOrders->fetchAll();
+
+            $stmtUpdateOrderTotal = $db->prepare("
+                UPDATE employee_orders 
+                SET total_bill = (SELECT COALESCE(SUM(total_price), 0) FROM employee_order_items WHERE employee_order_id = ?) 
+                WHERE id = ?
+            ");
+
+            foreach ($orders as $order) {
+                $stmtUpdateOrderTotal->execute([$order['id'], $order['id']]);
+            }
+
+            $db->commit();
+        } catch (\Throwable $e) {
+            $db->rollBack();
+            throw $e;
+        }
+    }
+}