128 lines
4.7 KiB
PHP
128 lines
4.7 KiB
PHP
<?php
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session_start();
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require_once __DIR__ . '/../config/database.php';
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header('Content-Type: application/json; charset=utf-8');
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if (!isset($_SESSION['isLoggedIn']) || $_SESSION['isLoggedIn'] !== true) {
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echo json_encode(['success' => false, 'message' => 'Требуется авторизация']);
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exit();
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}
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$userId = $_SESSION['user_id'] ?? 0;
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$action = $_GET['action'] ?? $_POST['action'] ?? '';
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$db = Database::getInstance()->getConnection();
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try {
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switch ($action) {
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case 'add':
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$productId = (int)($_POST['product_id'] ?? 0);
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$quantity = (int)($_POST['quantity'] ?? 1);
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if ($productId <= 0) {
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echo json_encode(['success' => false, 'message' => 'Неверный ID товара']);
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exit();
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}
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$checkProduct = $db->prepare("SELECT product_id, stock_quantity FROM products WHERE product_id = ? AND is_available = TRUE");
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$checkProduct->execute([$productId]);
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$product = $checkProduct->fetch();
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if (!$product) {
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echo json_encode(['success' => false, 'message' => 'Товар не найден']);
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exit();
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}
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$checkCart = $db->prepare("SELECT cart_id, quantity FROM cart WHERE user_id = ? AND product_id = ?");
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$checkCart->execute([$userId, $productId]);
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$cartItem = $checkCart->fetch();
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if ($cartItem) {
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$newQuantity = $cartItem['quantity'] + $quantity;
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$stmt = $db->prepare("UPDATE cart SET quantity = ?, updated_at = CURRENT_TIMESTAMP WHERE cart_id = ?");
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$stmt->execute([$newQuantity, $cartItem['cart_id']]);
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} else {
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$stmt = $db->prepare("INSERT INTO cart (user_id, product_id, quantity) VALUES (?, ?, ?)");
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$stmt->execute([$userId, $productId, $quantity]);
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}
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echo json_encode(['success' => true, 'message' => 'Товар добавлен в корзину']);
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break;
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case 'update':
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$productId = (int)($_POST['product_id'] ?? 0);
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$quantity = (int)($_POST['quantity'] ?? 1);
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if ($quantity <= 0) {
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$stmt = $db->prepare("DELETE FROM cart WHERE user_id = ? AND product_id = ?");
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$stmt->execute([$userId, $productId]);
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} else {
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$stmt = $db->prepare("UPDATE cart SET quantity = ?, updated_at = CURRENT_TIMESTAMP WHERE user_id = ? AND product_id = ?");
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$stmt->execute([$quantity, $userId, $productId]);
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}
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echo json_encode(['success' => true, 'message' => 'Корзина обновлена']);
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break;
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case 'remove':
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$productId = (int)($_POST['product_id'] ?? 0);
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$stmt = $db->prepare("DELETE FROM cart WHERE user_id = ? AND product_id = ?");
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$stmt->execute([$userId, $productId]);
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echo json_encode(['success' => true, 'message' => 'Товар удален из корзины']);
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break;
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case 'get':
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$stmt = $db->prepare("
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SELECT c.cart_id, c.product_id, c.quantity, p.name, p.price, p.image_url, p.stock_quantity
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FROM cart c
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JOIN products p ON c.product_id = p.product_id
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WHERE c.user_id = ? AND p.is_available = TRUE
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ORDER BY c.created_at DESC
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");
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$stmt->execute([$userId]);
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$items = $stmt->fetchAll();
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$total = 0;
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foreach ($items as &$item) {
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$item['subtotal'] = $item['price'] * $item['quantity'];
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$total += $item['subtotal'];
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}
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echo json_encode([
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'success' => true,
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'items' => $items,
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'total' => $total,
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'count' => array_sum(array_column($items, 'quantity'))
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]);
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break;
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case 'count':
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$stmt = $db->prepare("SELECT COALESCE(SUM(quantity), 0) FROM cart WHERE user_id = ?");
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$stmt->execute([$userId]);
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$count = $stmt->fetchColumn();
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echo json_encode(['success' => true, 'count' => (int)$count]);
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break;
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case 'clear':
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$stmt = $db->prepare("DELETE FROM cart WHERE user_id = ?");
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$stmt->execute([$userId]);
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echo json_encode(['success' => true, 'message' => 'Корзина очищена']);
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break;
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default:
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echo json_encode(['success' => false, 'message' => 'Неизвестное действие']);
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}
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} catch (PDOException $e) {
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echo json_encode(['success' => false, 'message' => 'Ошибка базы данных: ' . $e->getMessage()]);
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}
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