<?php
namespace Domain\Order;

class OrderAdminService
{
    private OrderRepository $orders;
    private $productRepo;
    private $settingsRepo;
    private $transportRepo;

    public function __construct(
        OrderRepository $orders,
        $productRepo = null,
        $settingsRepo = null,
        $transportRepo = null
    ) {
        $this->orders = $orders;
        $this->productRepo = $productRepo;
        $this->settingsRepo = $settingsRepo;
        $this->transportRepo = $transportRepo;
    }

    public function details(int $orderId): array
    {
        return $this->orders->findForAdmin($orderId);
    }

    public function statuses(): array
    {
        return $this->orders->orderStatuses();
    }

    /**
     * @return array{names: array<int, string>, colors: array<int, string>}
     */
    public function statusData(): array
    {
        return $this->orders->orderStatusData();
    }

    /**
     * @return array{items: array<int, array<string, mixed>>, total: int}
     */
    public function listForAdmin(
        array $filters,
        string $sortColumn = 'date_order',
        string $sortDir = 'DESC',
        int $page = 1,
        int $perPage = 15
    ): array {
        return $this->orders->listForAdmin($filters, $sortColumn, $sortDir, $page, $perPage);
    }

    public function nextOrderId(int $orderId): ?int
    {
        return $this->orders->nextOrderId($orderId);
    }

    public function prevOrderId(int $orderId): ?int
    {
        return $this->orders->prevOrderId($orderId);
    }

    public function saveNotes(int $orderId, string $notes): bool
    {
        return $this->orders->saveNotes($orderId, $notes);
    }

    public function saveOrderByAdmin(array $input): bool
    {
        $saved = $this->orders->saveOrderByAdmin(
            (int)($input['order_id'] ?? 0),
            (string)($input['client_name'] ?? ''),
            (string)($input['client_surname'] ?? ''),
            (string)($input['client_street'] ?? ''),
            (string)($input['client_postal_code'] ?? ''),
            (string)($input['client_city'] ?? ''),
            (string)($input['client_email'] ?? ''),
            (string)($input['firm_name'] ?? ''),
            (string)($input['firm_street'] ?? ''),
            (string)($input['firm_postal_code'] ?? ''),
            (string)($input['firm_city'] ?? ''),
            (string)($input['firm_nip'] ?? ''),
            (int)($input['transport_id'] ?? 0),
            (string)($input['inpost_paczkomat'] ?? ''),
            (int)($input['payment_method_id'] ?? 0)
        );

        return $saved;
    }

    // =========================================================================
    // Order products management (admin)
    // =========================================================================

    public function searchProducts(string $query, string $langId): array
    {
        if (!$this->productRepo || trim($query) === '') {
            return [];
        }

        $rows = $this->productRepo->searchProductByNameAjax($query, $langId);
        $results = [];

        foreach ($rows as $row) {
            $productId = (int)($row['product_id'] ?? 0);
            if ($productId <= 0) {
                continue;
            }

            $product = $this->productRepo->findCached($productId, $langId);
            if (!is_array($product)) {
                continue;
            }

            $name = isset($product['language']['name']) ? (string)$product['language']['name'] : '';
            $img = $this->productRepo->getProductImg($productId);

            $results[] = [
                'product_id' => $productId,
                'parent_product_id' => (int)($product['parent_id'] ?? 0),
                'name' => $name,
                'sku' => (string)($product['sku'] ?? ''),
                'ean' => (string)($product['ean'] ?? ''),
                'price_brutto' => (float)($product['price_brutto'] ?? 0),
                'price_brutto_promo' => (float)($product['price_brutto_promo'] ?? 0),
                'vat' => (float)($product['vat'] ?? 0),
                'quantity' => (int)($product['quantity'] ?? 0),
                'image' => $img,
            ];
        }

        return $results;
    }

    public function saveOrderProducts(int $orderId, array $productsData): bool
    {
        if ($orderId <= 0) {
            return false;
        }

        $currentProducts = $this->orders->orderProducts($orderId);
        $currentById = [];
        foreach ($currentProducts as $cp) {
            $currentById[(int)$cp['id']] = $cp;
        }

        $submittedIds = [];

        foreach ($productsData as $item) {
            $orderProductId = (int)($item['order_product_id'] ?? 0);
            $deleted = !empty($item['delete']);

            if ($deleted && $orderProductId > 0) {
                // Usunięcie — zwrot na stan
                $existing = isset($currentById[$orderProductId]) ? $currentById[$orderProductId] : null;
                if ($existing) {
                    $this->adjustStock((int)$existing['product_id'], (int)$existing['quantity']);
                }
                $this->orders->deleteOrderProduct($orderProductId);
                $submittedIds[] = $orderProductId;
                continue;
            }

            if ($deleted) {
                continue;
            }

            if ($orderProductId > 0 && isset($currentById[$orderProductId])) {
                // Istniejący produkt — aktualizacja
                $existing = $currentById[$orderProductId];
                $newQty = max(1, (int)($item['quantity'] ?? 1));
                $oldQty = (int)$existing['quantity'];
                $qtyDiff = $oldQty - $newQty;

                $update = [
                    'quantity' => $newQty,
                    'price_brutto' => (float)($item['price_brutto'] ?? $existing['price_brutto']),
                    'price_brutto_promo' => (float)($item['price_brutto_promo'] ?? $existing['price_brutto_promo']),
                ];

                $this->orders->updateOrderProduct($orderProductId, $update);

                // Korekta stanu: qtyDiff > 0 = zmniejszono ilość = zwrot na stan
                if ($qtyDiff !== 0) {
                    $this->adjustStock((int)$existing['product_id'], $qtyDiff);
                }

                $submittedIds[] = $orderProductId;
            } elseif ($orderProductId === 0) {
                // Nowy produkt
                $productId = (int)($item['product_id'] ?? 0);
                $qty = max(1, (int)($item['quantity'] ?? 1));

                $this->orders->addOrderProduct($orderId, [
                    'product_id' => $productId,
                    'parent_product_id' => (int)($item['parent_product_id'] ?? $productId),
                    'name' => (string)($item['name'] ?? ''),
                    'attributes' => '',
                    'vat' => (float)($item['vat'] ?? 0),
                    'price_brutto' => (float)($item['price_brutto'] ?? 0),
                    'price_brutto_promo' => (float)($item['price_brutto_promo'] ?? 0),
                    'quantity' => $qty,
                    'message' => '',
                    'custom_fields' => '',
                ]);

                // Zmniejsz stan magazynowy
                $this->adjustStock($productId, -$qty);
            }
        }

        // Usunięte z formularza (nie przesłane) — zwrot na stan
        foreach ($currentById as $cpId => $cp) {
            if (!in_array($cpId, $submittedIds)) {
                $this->adjustStock((int)$cp['product_id'], (int)$cp['quantity']);
                $this->orders->deleteOrderProduct($cpId);
            }
        }

        // Przelicz koszt dostawy (próg darmowej dostawy)
        $this->recalculateTransportCost($orderId);

        return true;
    }

    public function getFreeDeliveryThreshold(): float
    {
        if (!$this->settingsRepo) {
            return 0.0;
        }

        return (float)$this->settingsRepo->getSingleValue('free_delivery');
    }

    private function adjustStock(int $productId, int $delta): void
    {
        if (!$this->productRepo || $productId <= 0 || $delta === 0) {
            return;
        }

        $currentQty = $this->productRepo->getQuantity($productId);
        if ($currentQty === null) {
            return;
        }

        $newQty = max(0, $currentQty + $delta);
        $this->productRepo->updateQuantity($productId, $newQty);
    }

    private function recalculateTransportCost(int $orderId): void
    {
        $order = $this->orders->findRawById($orderId);
        if (!$order) {
            return;
        }

        $transportId = (int)($order['transport_id'] ?? 0);
        if ($transportId <= 0 || !$this->transportRepo || !$this->settingsRepo) {
            return;
        }

        $transport = $this->transportRepo->findActiveById($transportId);
        if (!is_array($transport)) {
            return;
        }

        // Oblicz sumę produktów (bez dostawy)
        $productsSummary = $this->calculateProductsTotal($orderId);
        $freeDelivery = (float)$this->settingsRepo->getSingleValue('free_delivery');

        if ((int)($transport['delivery_free'] ?? 0) === 1 && $freeDelivery > 0 && $productsSummary >= $freeDelivery) {
            $transportCost = 0.0;
        } else {
            $transportCost = (float)($transport['cost'] ?? 0);
        }

        $this->orders->updateTransportCost($orderId, $transportCost);
    }

    private function calculateProductsTotal(int $orderId): float
    {
        $products = $this->orders->orderProducts($orderId);
        $summary = 0.0;

        foreach ($products as $row) {
            $pricePromo = (float)($row['price_brutto_promo'] ?? 0);
            $price = (float)($row['price_brutto'] ?? 0);
            $quantity = (float)($row['quantity'] ?? 0);

            if ($pricePromo > 0) {
                $summary += $pricePromo * $quantity;
            } else {
                $summary += $price * $quantity;
            }
        }

        return $summary;
    }

    public function changeStatus(int $orderId, int $status, bool $sendEmail): array
    {
        $order = $this->orders->findRawById($orderId);
        if (!$order || (int)$order['status'] === $status) {
            return ['result' => false];
        }

        $db = $this->orders->getDb();

        if ($this->orders->updateOrderStatus($orderId, $status))
        {
            $this->orders->insertStatusHistory($orderId, $status, $sendEmail ? 1 : 0);

            $response = ['result' => true];

            if ($sendEmail)
            {
                $order['status'] = $status;
                $response['email'] = $this->sendStatusChangeEmail($order);
            }

            // Apilo status sync
            $this->syncApiloStatusIfNeeded($order, $status);

            return $response;
        }

        return ['result' => false];
    }

    public function resendConfirmationEmail(int $orderId): bool
    {
        global $settings;

        $db = $this->orders->getDb();
        $order = $this->orders->orderDetailsFrontend($orderId);
        if (!$order || !$order['id']) {
            return false;
        }

        $coupon = (int)$order['coupon_id'] ? (new \Domain\Coupon\CouponRepository($db))->find((int)$order['coupon_id']) : null;

        $mail_order = \Shared\Tpl\Tpl::view('shop-order/mail-summary', [
            'settings' => $settings,
            'order' => $order,
            'coupon' => $coupon,
        ]);

        $settings['ssl'] ? $base = 'https' : $base = 'http';

        $regex = "-(<img[^>]+src\s*=\s*['\"])(((?!'|\"|https?://).)*)(['\"][^>]*>)-i";
        $mail_order = preg_replace($regex, "$1" . $base . "://" . $_SERVER['SERVER_NAME'] . "$2$4", $mail_order);

        $regex = "-(<a[^>]+href\s*=\s*['\"])(((?!'|\"|https?://).)*)(['\"][^>]*>)-i";
        $mail_order = preg_replace($regex, "$1" . $base . "://" . $_SERVER['SERVER_NAME'] . "$2$4", $mail_order);

        \Shared\Helpers\Helpers::send_email($order['client_email'], \Shared\Helpers\Helpers::lang('potwierdzenie-zamowienia-ze-sklepu') . ' ' . $settings['firm_name'], $mail_order);
        \Shared\Helpers\Helpers::send_email($settings['contact_email'], 'Nowe zamówienie / ' . $settings['firm_name'] . ' / ' . $order['number'] . ' - ' . $order['client_surname'] . ' ' . $order['client_name'], $mail_order);

        return true;
    }

    public function setOrderAsUnpaid(int $orderId): bool
    {
        $this->orders->setAsUnpaid($orderId);
        return true;
    }

    public function setOrderAsPaid(int $orderId, bool $sendMail): bool
    {
        $order = $this->orders->findRawById($orderId);
        if (!$order) {
            return false;
        }

        // Apilo payment sync
        $this->syncApiloPaymentIfNeeded($order);

        // Mark as paid
        $this->orders->setAsPaid($orderId);

        // Set status to 1 (opłacone) without email
        $this->changeStatus($orderId, 1, false);

        // Set status to 4 (przyjęte do realizacji) with email
        $this->changeStatus($orderId, 4, $sendMail);

        return true;
    }

    public function sendOrderToApilo(int $orderId): bool
    {
        global $mdb;

        if ($orderId <= 0) {
            return false;
        }

        $order = $this->orders->findForAdmin($orderId);
        if (empty($order) || empty($order['apilo_order_id'])) {
            return false;
        }

        $integrationsRepository = new \Domain\Integrations\IntegrationsRepository( $mdb );
        $accessToken = $integrationsRepository -> apiloGetAccessToken();
        if (!$accessToken) {
            return false;
        }

        $newStatus = 8;

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://projectpro.apilo.com/rest/api/orders/' . $order['apilo_order_id'] . '/status/');
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
            'id' => (int)$order['apilo_order_id'],
            'status' => (int)( new \Domain\ShopStatus\ShopStatusRepository($mdb) )->getApiloStatusId( (int)$newStatus ),
        ]));
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Authorization: Bearer ' . $accessToken,
            'Accept: application/json',
            'Content-Type: application/json',
        ]);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        $apiloResultRaw = curl_exec($ch);
        $apiloResult = json_decode((string)$apiloResultRaw, true);

        if (!is_array($apiloResult) || (int)($apiloResult['updates'] ?? 0) !== 1) {
            curl_close($ch);
            return false;
        }

        $query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'pp_shop_orders' AND COLUMN_NAME != 'id'";
        $stmt = $mdb->query($query);
        $columns = $stmt ? $stmt->fetchAll(\PDO::FETCH_COLUMN) : [];
        $columnsList = implode(', ', $columns);
        $mdb->query('INSERT INTO pp_shop_orders (' . $columnsList . ') SELECT ' . $columnsList . ' FROM pp_shop_orders pso WHERE pso.id = ' . $orderId);
        $newOrderId = (int)$mdb->id();

        $query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'pp_shop_order_products' AND COLUMN_NAME != 'id' AND COLUMN_NAME != 'order_id'";
        $stmt2 = $mdb->query($query);
        $columns = $stmt2 ? $stmt2->fetchAll(\PDO::FETCH_COLUMN) : [];
        $columnsList = implode(', ', $columns);
        $mdb->query('INSERT INTO pp_shop_order_products (order_id, ' . $columnsList . ') SELECT ' . $newOrderId . ', ' . $columnsList . ' FROM pp_shop_order_products psop WHERE psop.order_id = ' . $orderId);

        $query = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'pp_shop_order_statuses' AND COLUMN_NAME != 'id' AND COLUMN_NAME != 'order_id'";
        $stmt3 = $mdb->query($query);
        $columns = $stmt3 ? $stmt3->fetchAll(\PDO::FETCH_COLUMN) : [];
        $columnsList = implode(', ', $columns);
        $mdb->query('INSERT INTO pp_shop_order_statuses (order_id, ' . $columnsList . ') SELECT ' . $newOrderId . ', ' . $columnsList . ' FROM pp_shop_order_statuses psos WHERE psos.order_id = ' . $orderId);

        $mdb->delete('pp_shop_orders', ['id' => $orderId]);
        $mdb->delete('pp_shop_order_products', ['order_id' => $orderId]);
        $mdb->delete('pp_shop_order_statuses', ['order_id' => $orderId]);

        $mdb->update('pp_shop_orders', ['apilo_order_id' => null], ['id' => $newOrderId]);

        curl_close($ch);

        return true;
    }

    public function toggleTrustmateSend(int $orderId): array
    {
        $newValue = $this->orders->toggleTrustmateSend($orderId);
        if ($newValue === null) {
            return [
                'result' => false,
            ];
        }

        return [
            'result' => true,
            'trustmate_send' => $newValue,
        ];
    }

    public function deleteOrder(int $orderId): bool
    {
        return $this->orders->deleteOrder($orderId);
    }

    // =========================================================================
    // Apilo sync queue (migrated from \shop\Order)
    // =========================================================================

    private const APILO_SYNC_QUEUE_FILE = '/temp/apilo-sync-queue.json';

    public function processApiloSyncQueue(int $limit = 10): int
    {
        $queue = self::loadApiloSyncQueue();
        if (!\Shared\Helpers\Helpers::is_array_fix($queue)) {
            return 0;
        }

        $processed = 0;

        foreach ($queue as $key => $task)
        {
            if ($processed >= $limit) {
                break;
            }

            $order_id = (int)($task['order_id'] ?? 0);
            if ($order_id <= 0) {
                unset($queue[$key]);
                continue;
            }

            $order = $this->orders->findRawById($order_id);
            if (!$order) {
                unset($queue[$key]);
                continue;
            }

            $error = '';
            $sync_failed = false;

            $payment_pending = !empty($task['payment']) && (int)$order['paid'] === 1;
            if ($payment_pending && (int)$order['apilo_order_id']) {
                if (!$this->syncApiloPayment($order)) {
                    $sync_failed = true;
                    $error = 'payment_sync_failed';
                }
            }

            $status_pending = isset($task['status']) && $task['status'] !== null && $task['status'] !== '';
            if (!$sync_failed && $status_pending && (int)$order['apilo_order_id']) {
                if (!$this->syncApiloStatus($order, (int)$task['status'])) {
                    $sync_failed = true;
                    $error = 'status_sync_failed';
                }
            }

            if ($sync_failed) {
                $task['attempts'] = (int)($task['attempts'] ?? 0) + 1;
                $task['last_error'] = $error;
                $task['updated_at'] = date('Y-m-d H:i:s');
                $queue[$key] = $task;
            } else {
                unset($queue[$key]);
            }

            $processed++;
        }

        self::saveApiloSyncQueue($queue);

        return $processed;
    }

    // =========================================================================
    // Private: email
    // =========================================================================

    private function sendStatusChangeEmail(array $order): bool
    {
        if (!$order['client_email']) {
            return false;
        }

        $db = $this->orders->getDb();
        $order_statuses = $this->orders->orderStatuses();
        $firm_name = (new \Domain\Settings\SettingsRepository($db))->getSingleValue('firm_name');

        $status = (int)$order['status'];
        $number = $order['number'];

        $subjects = [
            0 => $firm_name . ' - zamówienie [NUMER] zostało złożone',
            1 => $firm_name . ' - zamówienie [NUMER] zostało opłacone',
            2 => $firm_name . ' - płatność za zamówienie [NUMER] została odrzucona',
            3 => $firm_name . ' - płatność za zamówienie [NUMER] jest sprawdzania ręcznie',
            4 => $firm_name . ' - zamówienie [NUMER] zostało przyjęte do realizacji',
            5 => $firm_name . ' - zamówienie [NUMER] zostało wysłane',
            6 => $firm_name . ' - zamówienie [NUMER] zostało zrealizowane',
            7 => $firm_name . ' - zamówienie [NUMER] zostało przygotowane go wysłania',
            8 => $firm_name . ' - zamówienie [NUMER] zostało anulowane',
        ];

        $subject = isset($subjects[$status]) ? str_replace('[NUMER]', $number, $subjects[$status]) : '';
        if (!$subject) {
            return false;
        }

        $email = new \Shared\Email\Email();
        $email->load_by_name('#sklep-zmiana-statusu-zamowienia');

        $email->text = str_replace('[NUMER_ZAMOWIENIA]', $number, $email->text);
        $email->text = str_replace('[DATA_ZAMOWIENIA]', date('Y/m/d', strtotime($order['date_order'])), $email->text);
        $email->text = str_replace('[STATUS]', isset($order_statuses[$status]) ? $order_statuses[$status] : '', $email->text);

        return $email->send($order['client_email'], $subject, true);
    }

    // =========================================================================
    // Private: Apilo sync
    // =========================================================================

    private function syncApiloPaymentIfNeeded(array $order): void
    {
        global $config;

        $db = $this->orders->getDb();
        $integrationsRepository = new \Domain\Integrations\IntegrationsRepository($db);
        $apilo_settings = $integrationsRepository->getSettings('apilo');

        if (!$apilo_settings['enabled'] || !$apilo_settings['access-token'] || !$apilo_settings['sync_orders']) {
            return;
        }

        if (isset($config['debug']['apilo']) && $config['debug']['apilo']) {
            self::appendApiloLog("SET AS PAID\n" . print_r($order, true));
        }

        if ($order['apilo_order_id'] && !$this->syncApiloPayment($order)) {
            self::queueApiloSync((int)$order['id'], true, null, 'payment_sync_failed');
        }
    }

    private function syncApiloStatusIfNeeded(array $order, int $status): void
    {
        global $config;

        $db = $this->orders->getDb();
        $integrationsRepository = new \Domain\Integrations\IntegrationsRepository($db);
        $apilo_settings = $integrationsRepository->getSettings('apilo');

        if (!$apilo_settings['enabled'] || !$apilo_settings['access-token'] || !$apilo_settings['sync_orders']) {
            return;
        }

        if (isset($config['debug']['apilo']) && $config['debug']['apilo']) {
            self::appendApiloLog("UPDATE STATUS\n" . print_r($order, true));
        }

        if ($order['apilo_order_id'] && !$this->syncApiloStatus($order, $status)) {
            self::queueApiloSync((int)$order['id'], false, $status, 'status_sync_failed');
        }
    }

    private function syncApiloPayment(array $order): bool
    {
        global $config;

        $db = $this->orders->getDb();
        $integrationsRepository = new \Domain\Integrations\IntegrationsRepository($db);

        if (!(int)$order['apilo_order_id']) {
            return true;
        }

        $payment_type = (int)(new \Domain\PaymentMethod\PaymentMethodRepository($db))->getApiloPaymentTypeId((int)$order['payment_method_id']);
        if ($payment_type <= 0) {
            $payment_type = 1;
        }

        $payment_date = new \DateTime($order['date_order']);
        $access_token = $integrationsRepository->apiloGetAccessToken();

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "https://projectpro.apilo.com/rest/api/orders/" . $order['apilo_order_id'] . '/payment/');
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
            'amount' => str_replace(',', '.', $order['summary']),
            'paymentDate' => $payment_date->format('Y-m-d\TH:i:s\Z'),
            'type' => $payment_type,
        ]));
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            "Authorization: Bearer " . $access_token,
            "Accept: application/json",
            "Content-Type: application/json",
        ]);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
        curl_setopt($ch, CURLOPT_TIMEOUT, 15);
        $apilo_response = curl_exec($ch);
        $http_code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $curl_error = curl_errno($ch) ? curl_error($ch) : '';
        curl_close($ch);

        if (isset($config['debug']['apilo']) && $config['debug']['apilo']) {
            self::appendApiloLog("PAYMENT RESPONSE\nHTTP: " . $http_code . "\nCURL: " . $curl_error . "\n" . print_r($apilo_response, true));
        }

        if ($curl_error !== '') return false;
        if ($http_code < 200 || $http_code >= 300) return false;

        return true;
    }

    private function syncApiloStatus(array $order, int $status): bool
    {
        global $config;

        $db = $this->orders->getDb();
        $integrationsRepository = new \Domain\Integrations\IntegrationsRepository($db);

        if (!(int)$order['apilo_order_id']) {
            return true;
        }

        $access_token = $integrationsRepository->apiloGetAccessToken();

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "https://projectpro.apilo.com/rest/api/orders/" . $order['apilo_order_id'] . '/status/');
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
            'id' => $order['apilo_order_id'],
            'status' => (int)(new \Domain\ShopStatus\ShopStatusRepository($db))->getApiloStatusId($status),
        ]));
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            "Authorization: Bearer " . $access_token,
            "Accept: application/json",
            "Content-Type: application/json",
        ]);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
        curl_setopt($ch, CURLOPT_TIMEOUT, 15);
        $apilo_result = curl_exec($ch);
        $http_code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $curl_error = curl_errno($ch) ? curl_error($ch) : '';
        curl_close($ch);

        if (isset($config['debug']['apilo']) && $config['debug']['apilo']) {
            self::appendApiloLog("STATUS RESPONSE\nHTTP: " . $http_code . "\nCURL: " . $curl_error . "\n" . print_r($apilo_result, true));
        }

        if ($curl_error !== '') return false;
        if ($http_code < 200 || $http_code >= 300) return false;

        return true;
    }

    // =========================================================================
    // Private: Apilo sync queue file helpers
    // =========================================================================

    private static function queueApiloSync(int $order_id, bool $payment, ?int $status, string $error): void
    {
        if ($order_id <= 0) return;

        $queue = self::loadApiloSyncQueue();
        $key = (string)$order_id;
        $row = is_array($queue[$key] ?? null) ? $queue[$key] : [];

        $row['order_id'] = $order_id;
        $row['payment'] = !empty($row['payment']) || $payment ? 1 : 0;
        if ($status !== null) {
            $row['status'] = $status;
        }

        $row['attempts'] = (int)($row['attempts'] ?? 0) + 1;
        $row['last_error'] = $error;
        $row['updated_at'] = date('Y-m-d H:i:s');

        $queue[$key] = $row;
        self::saveApiloSyncQueue($queue);
    }

    private static function apiloSyncQueuePath(): string
    {
        return dirname(__DIR__, 2) . self::APILO_SYNC_QUEUE_FILE;
    }

    private static function loadApiloSyncQueue(): array
    {
        $path = self::apiloSyncQueuePath();
        if (!file_exists($path)) return [];

        $content = file_get_contents($path);
        if (!$content) return [];

        $decoded = json_decode($content, true);
        if (!is_array($decoded)) return [];

        return $decoded;
    }

    private static function saveApiloSyncQueue(array $queue): void
    {
        $path = self::apiloSyncQueuePath();
        $dir = dirname($path);
        if (!is_dir($dir)) {
            mkdir($dir, 0777, true);
        }

        file_put_contents($path, json_encode($queue, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES), LOCK_EX);
    }

    private static function appendApiloLog(string $message): void
    {
        $base = isset($_SERVER['DOCUMENT_ROOT']) && $_SERVER['DOCUMENT_ROOT']
            ? rtrim($_SERVER['DOCUMENT_ROOT'], '/\\')
            : dirname(__DIR__, 2);

        $dir = $base . '/logs';
        if (!is_dir($dir)) {
            mkdir($dir, 0777, true);
        }

        file_put_contents(
            $dir . '/apilo.txt',
            date('Y-m-d H:i:s') . ' --- ' . $message . "\n\n",
            FILE_APPEND
        );
    }
}