v1.0.0.0

StocketBase

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<?php
declare(strict_types=1);
require_once __DIR__ . '/database.php';
require_once __DIR__ . '/site-front.php';
require_once __DIR__ . '/currency.php';
final class Cart
{
private const SESSION_KEY = 'cart';
public static function boot(): void
{
if (session_status() !== PHP_SESSION_ACTIVE) {
session_set_cookie_params([
'lifetime' => 0,
'path' => '/',
'secure' => Config::get('SESSION_SECURE', '1') === '1',
'httponly' => true,
'samesite' => 'Lax',
]);
session_start();
}
if (!isset($_SESSION[self::SESSION_KEY]) || !is_array($_SESSION[self::SESSION_KEY])) {
$_SESSION[self::SESSION_KEY] = [];
}
}
private static function lineKey(int $productId, ?int $variantId): string
{
return $productId . ':' . ($variantId ?? 0);
}
public static function add(int $productId, ?int $variantId, int $quantity): void
{
self::boot();
$quantity = max(1, $quantity);
$key = self::lineKey($productId, $variantId);
$existing = $_SESSION[self::SESSION_KEY][$key] ?? null;
$newQuantity = $quantity + (is_array($existing) ? (int) $existing['quantity'] : 0);
$_SESSION[self::SESSION_KEY][$key] = [
'product_id' => $productId,
'variant_id' => $variantId,
'quantity' => min(999, $newQuantity),
];
}
public static function updateQuantity(int $productId, ?int $variantId, int $quantity): void
{
self::boot();
$key = self::lineKey($productId, $variantId);
if ($quantity <= 0) {
unset($_SESSION[self::SESSION_KEY][$key]);
return;
}
if (!isset($_SESSION[self::SESSION_KEY][$key])) {
return;
}
$_SESSION[self::SESSION_KEY][$key]['quantity'] = min(999, $quantity);
}
public static function remove(int $productId, ?int $variantId): void
{
self::boot();
unset($_SESSION[self::SESSION_KEY][self::lineKey($productId, $variantId)]);
}
public static function clear(): void
{
self::boot();
$_SESSION[self::SESSION_KEY] = [];
unset($_SESSION['cart_discount_code']);
}
public static function count(): int
{
self::boot();
$count = 0;
foreach ($_SESSION[self::SESSION_KEY] as $row) {
$count += (int) ($row['quantity'] ?? 0);
}
return $count;
}
public static function isEmpty(): bool
{
self::boot();
return empty($_SESSION[self::SESSION_KEY]);
}
public static function items(): array
{
self::boot();
$entries = $_SESSION[self::SESSION_KEY];
if (empty($entries)) {
return [];
}
$db = Database::site();
$storeCurrency = (string) (SiteFront::settings()['store_currency'] ?? Currency::DEFAULT_CODE);
$items = [];
foreach ($entries as $key => $entry) {
$productId = (int) ($entry['product_id'] ?? 0);
$variantId = isset($entry['variant_id']) && $entry['variant_id'] !== null ? (int) $entry['variant_id'] : null;
$quantity = max(1, (int) ($entry['quantity'] ?? 1));
$statement = $db->prepare(
"SELECT id, title, slug, cover_image_path, price_cents, currency, track_inventory, stock_quantity, status, product_kind
FROM products WHERE id = :id LIMIT 1"
);
$statement->execute(['id' => $productId]);
$product = $statement->fetch();
if (!$product || $product['status'] !== 'published') {
unset($_SESSION[self::SESSION_KEY][$key]);
continue;
}
$variant = null;
if ($variantId !== null) {
$variantStatement = $db->prepare(
'SELECT id, name, sku, price_cents, stock_quantity FROM product_variants WHERE id = :id AND product_id = :product_id LIMIT 1'
);
$variantStatement->execute(['id' => $variantId, 'product_id' => $productId]);
$variant = $variantStatement->fetch() ?: null;
if (!$variant) {
$variantId = null;
}
}
$unitPriceCents = ($variant && $variant['price_cents'] !== null)
? (int) $variant['price_cents']
: (int) ($product['price_cents'] ?? 0);
$currency = (string) ($product['currency'] ?: $storeCurrency);
$stockQuantity = ($variant && $variant['stock_quantity'] !== null) ? $variant['stock_quantity'] : $product['stock_quantity'];
if ($unitPriceCents <= 0) {
unset($_SESSION[self::SESSION_KEY][$key]);
continue;
}
if ((int) ($product['track_inventory'] ?? 0) === 1 && $stockQuantity !== null) {
if ((int) $stockQuantity <= 0) {
unset($_SESSION[self::SESSION_KEY][$key]);
continue;
}
if ($quantity > (int) $stockQuantity) {
$quantity = (int) $stockQuantity;
$_SESSION[self::SESSION_KEY][$key]['quantity'] = $quantity;
}
}
$items[] = [
'key' => $key,
'product_id' => $productId,
'variant_id' => $variantId,
'title' => $product['title'],
'slug' => $product['slug'],
'variant_name' => $variant['name'] ?? null,
'cover_image_path' => $product['cover_image_path'],
'unit_price_cents' => $unitPriceCents,
'currency' => $currency,
'quantity' => $quantity,
'total_cents' => $unitPriceCents * $quantity,
'product_kind' => (string) ($product['product_kind'] ?? 'physical'),
'track_inventory' => (bool) ($product['track_inventory'] ?? 0),
'stock_quantity' => $stockQuantity !== null ? (int) $stockQuantity : null,
];
}
return $items;
}
public static function requiresShipping(?array $items = null): bool
{
foreach ($items ?? self::items() as $item) {
if (($item['product_kind'] ?? 'physical') === 'physical') {
return true;
}
}
return false;
}
public static function subtotalCents(): int
{
$total = 0;
foreach (self::items() as $item) {
$total += $item['total_cents'];
}
return $total;
}
public static function currency(): string
{
foreach (self::items() as $item) {
return $item['currency'];
}
return (string) (SiteFront::settings()['store_currency'] ?? Currency::DEFAULT_CODE);
}
public static function findDiscount(string $code, ?string $currency = null): ?array
{
$code = trim($code);
if ($code === '') {
return null;
}
$statement = Database::site()->prepare('SELECT * FROM discounts WHERE UPPER(code) = UPPER(:code) LIMIT 1');
$statement->execute(['code' => $code]);
$discount = $statement->fetch();
if (!$discount || (int) $discount['is_active'] !== 1) {
return null;
}
$now = date('Y-m-d H:i:s');
if (!empty($discount['starts_at']) && (string) $discount['starts_at'] > $now) {
return null;
}
if (!empty($discount['ends_at']) && (string) $discount['ends_at'] < $now) {
return null;
}
if ($discount['max_redemptions'] !== null && (int) $discount['times_redeemed'] >= (int) $discount['max_redemptions']) {
return null;
}
if ($currency !== null && !empty($discount['currency']) && strtoupper((string) $discount['currency']) !== strtoupper($currency)) {
return null;
}
return $discount;
}
public static function discountAmountCents(array $discount, int $subtotalCents): int
{
if ($discount['min_order_cents'] !== null && $subtotalCents < (int) $discount['min_order_cents']) {
return 0;
}
if ($discount['discount_type'] === 'percentage') {
$amount = (int) round($subtotalCents * (((int) $discount['value']) / 100));
} else {
$amount = (int) $discount['value'];
}
return max(0, min($amount, $subtotalCents));
}
public static function appliedDiscountCode(): ?string
{
self::boot();
$code = $_SESSION['cart_discount_code'] ?? null;
return is_string($code) && $code !== '' ? $code : null;
}
public static function setDiscountCode(?string $code): void
{
self::boot();
if ($code === null || $code === '') {
unset($_SESSION['cart_discount_code']);
return;
}
$_SESSION['cart_discount_code'] = $code;
}
}