<?php

namespace App\Jobs;

use App\Models\ShoppingOrder;
use App\Services\DhlDataHelper;
use Exception;
use Illuminate\Bus\Queueable as BusQueueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;

/**
 * Job to create DHL shipments asynchronously
 * 
 * This job handles the creation of DHL shipments in the background,
 * preventing API timeouts and improving user experience.
 */
class CreateShipmentJob implements ShouldQueue
{
    use BusQueueable, Dispatchable, InteractsWithQueue, SerializesModels;

    /**
     * @var ShoppingOrder
     */
    public $shoppingOrder;

    /**
     * @var float
     */
    public $weight;

    /**
     * @var array
     */
    public $options;

    /**
     * @var array
     */
    public $dhlConfig;

    /**
     * The number of times the job may be attempted.
     *
     * @var int
     */
    public $tries = 3;

    /**
     * The maximum number of seconds the job can run before timing out.
     *
     * @var int
     */
    public $timeout = 120;

    /**
     * Create a new job instance.
     *
     * @param ShoppingOrder $shoppingOrder
     * @param float $weight
     * @param array $options
     * @param array|null $dhlConfig
     */
    public function __construct(ShoppingOrder $shoppingOrder, float $weight = 1.0, array $options = [], array $dhlConfig = [])
    {
        $this->shoppingOrder = $shoppingOrder;
        $this->weight = $weight;
        $this->options = $options;

        // Load DHL config once when creating the job
        if (empty($dhlConfig)) {
            $settingController = new \App\Http\Controllers\SettingController();
            $this->dhlConfig = $settingController->getDhlConfig();
        } else {
            $this->dhlConfig = $dhlConfig;
        }

        // Set queue name based on priority
        if (isset($options['priority']) && $options['priority'] === 'high') {
            $this->onQueue('high-priority');
        } else {
            $this->onQueue('dhl-shipments');
        }
    }

    /**
     * Execute the job.
     */
    public function handle(): void
    {
        try {
            Log::info('[DHL Queue] Starting shipment creation job', [
                'order_id' => $this->shoppingOrder->id,
                'weight' => $this->weight,
                'attempt' => $this->attempts(),
            ]);

            // Use DHL configuration loaded in constructor
            $dhlClient = new \Acme\Dhl\Support\DhlClient(
                $this->dhlConfig['base_url'],
                $this->dhlConfig['api_key'],
                $this->dhlConfig['username'],
                $this->dhlConfig['password']
            );

            $shippingService = new \Acme\Dhl\Services\ShippingService($dhlClient);

            // Prepare order data using helper
            $orderData = DhlDataHelper::prepareOrderData($this->shoppingOrder, $this->weight, $this->options, $this->dhlConfig);

            // Create the shipment using new package
            $result = $shippingService->createLabel($orderData);

            Log::info('[DHL Queue] Shipment created successfully', [
                'order_id' => $this->shoppingOrder->id,
                'shipment_number' => $result['shipmentNumber'] ?? 'N/A',
                'label_path' => $result['labelPath'] ?? 'N/A',
            ]);

            // Trigger follow-up actions if specified (if tracking number available)
            if (isset($this->options['auto_track']) && $this->options['auto_track'] && !empty($result['trackingNumber'])) {
                Log::info('[DHL Queue] Scheduling tracking update', [
                    'tracking_number' => $result['trackingNumber']
                ]);
                // Note: TrackShipmentJob would need to be updated to work with tracking numbers
            }
        } catch (Exception $e) {
            Log::error('[DHL Queue] Shipment creation failed', [
                'order_id' => $this->shoppingOrder->id,
                'error' => $e->getMessage(),
                'attempt' => $this->attempts(),
                'max_tries' => $this->tries,
            ]);

            // If this is the final attempt, mark as permanently failed
            if ($this->attempts() >= $this->tries) {
                Log::error('[DHL Queue] Shipment creation permanently failed', [
                    'order_id' => $this->shoppingOrder->id,
                    'error' => $e->getMessage(),
                ]);
            }

            throw $e; // Re-throw to trigger retry mechanism
        }
    }

    /**
     * Handle a job failure.
     *
     * @param Exception $exception
     */
    public function failed(Exception $exception): void
    {
        Log::error('[DHL Queue] CreateShipmentJob permanently failed', [
            'order_id' => $this->shoppingOrder->id,
            'error' => $exception->getMessage(),
            'trace' => $exception->getTraceAsString(),
        ]);

        // You could implement additional failure handling here:
        // - Send notification to admin
        // - Update order status
        // - Create manual task for staff
    }


    /**
     * Determine the time at which the job should timeout.
     *
     * @return \DateTime
     */
    public function retryUntil()
    {
        return now()->addHours(2);
    }
}