<?php

declare(strict_types=1);

namespace Queue\Jobs;

use App\Modules\Invoices\InvoiceModel;
use App\Modules\Companies\CompanyService;
use App\Services\JoFotara\JoFotaraGateway;
use App\Services\JoFotara\UBLGeneratorService;
use Throwable;

final class SubmitJoFotaraJob
{
    public function __construct(
        private readonly InvoiceModel $invoiceModel,
        private readonly CompanyService $companyService,
        private readonly UBLGeneratorService $ublGenerator,
        private readonly JoFotaraGateway $jofotaraGateway
    ) {}

    public function handle(array $payload): void
    {
        $invoiceId = $payload['invoice_id'];

        try {
            // 1. Update status to submitting
            $this->invoiceModel->update($invoiceId, ['status' => 'submitting']);

            // 2. Fetch Invoice
            $db = \App\Core\Database::getInstance();
            $stmt = $db->prepare("SELECT * FROM invoices WHERE id = ? LIMIT 1");
            $stmt->execute([$invoiceId]);
            $invoice = $stmt->fetch();

            if (!$invoice) {
                throw new \Exception("Invoice not found.");
            }

            // 3. Fetch Company Credentials
            $credentials = $this->companyService->getJoFotaraCredentials($invoice['company_id']);
            if (empty($credentials['clientId']) || empty($credentials['secretKey'])) {
                throw new \Exception("Company is not linked to JoFotara.");
            }

            // 4. Fetch Invoice Lines
            $stmt = $db->prepare("SELECT * FROM invoice_lines WHERE invoice_id = ?");
            $stmt->execute([$invoiceId]);
            $lines = $stmt->fetchAll();

            // 5. Generate UBL XML
            $xmlString = $this->ublGenerator->generate($invoice, $lines);
            $xmlBase64 = base64_encode($xmlString);

            // 6. Submit to JoFotara
            $response = $this->jofotaraGateway->submitInvoice($invoice['company_id'], $xmlBase64, $credentials);

            // 7. Process Response
            // Assuming response contains a success boolean and possibly qr_code
            if (isset($response['success']) && $response['success']) {
                $this->invoiceModel->update($invoiceId, [
                    'status' => 'approved',
                    'qr_code' => $response['qr_code'] ?? null,
                    'jofotara_response' => json_encode($response, JSON_UNESCAPED_UNICODE)
                ]);
            } else {
                $this->invoiceModel->update($invoiceId, [
                    'status' => 'rejected',
                    'jofotara_response' => json_encode($response, JSON_UNESCAPED_UNICODE)
                ]);
            }

        } catch (Throwable $e) {
            $this->invoiceModel->update($invoiceId, [
                'status' => 'validation_failed',
                'validation_errors' => json_encode([['message_ar' => 'فشل الإرسال: ' . $e->getMessage()]], JSON_UNESCAPED_UNICODE)
            ]);
            throw $e;
        }
    }
}