Stripe live operatiu i descompte d stock al Google Sheet

checkout/common.php

@@ -295,6 +295,78 @@ function kapvoe_create_checkout_session(array $config, array $payload): array {
     return $decoded;
 }
 
+function kapvoe_decrement_sheet_stock(array $config, array $order, string $sessionId): array
+{
+    $url = (string)($config['stock_sync_url'] ?? '');
+    $token = (string)($config['stock_sync_token'] ?? '');
+
+    if ($url === '' || $token === '') {
+        throw new RuntimeException('Falta configurar stock_sync_url o stock_sync_token');
+    }
+
+    $payload = [
+        'action' => 'decrement_stock',
+        'token' => $token,
+        'product_code' => (string)($order['product_code'] ?? ''),
+        'quantity' => max(1, (int)($order['quantity'] ?? 1)),
+        'order_id' => (string)($order['order_id'] ?? ''),
+        'session_id' => $sessionId,
+    ];
+
+    if ($payload['product_code'] === '') {
+        throw new RuntimeException('La comanda no té product_code');
+    }
+
+    if ($payload['order_id'] === '') {
+        throw new RuntimeException('La comanda no té order_id');
+    }
+
+    if (!function_exists('curl_init')) {
+        throw new RuntimeException('cURL no està disponible al PHP');
+    }
+
+    $ch = curl_init($url);
+
+    curl_setopt_array($ch, [
+        CURLOPT_RETURNTRANSFER => true,
+        CURLOPT_POST => true,
+        CURLOPT_POSTFIELDS => json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES),
+        CURLOPT_HTTPHEADER => [
+            'Content-Type: application/json',
+            'Accept: application/json',
+        ],
+        CURLOPT_TIMEOUT => 20,
+        CURLOPT_CONNECTTIMEOUT => 10,
+    ]);
+
+    $response = curl_exec($ch);
+
+    if ($response === false) {
+        $error = curl_error($ch);
+        curl_close($ch);
+        throw new RuntimeException("Error cURL stock sync: {$error}");
+    }
+
+    $statusCode = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+    curl_close($ch);
+
+    if ($statusCode < 200 || $statusCode >= 300) {
+        throw new RuntimeException("Stock sync HTTP {$statusCode}: {$response}");
+    }
+
+    $json = json_decode($response, true);
+
+    if (!is_array($json)) {
+        throw new RuntimeException('Resposta no JSON del stock sync: ' . $response);
+    }
+
+    if (!($json['ok'] ?? false)) {
+        throw new RuntimeException('Stock sync error: ' . ($json['error'] ?? 'error desconegut'));
+    }
+
+    return $json;
+}
+
 function kapvoe_verify_stripe_signature(string $payload, string $header, string $secret, int $tolerance = 300): bool {
     if (!$header || !$secret) {
         return false;