<?php

namespace App\Http\Controllers;

use App\Enums\ShipmentType;
use App\Models\Shipment;
use App\Services\PdfService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;

class ShipmentPdfController extends Controller
{
    public function __construct(protected PdfService $pdf) {}

    /**
     * تولید AWB PDF (برای همه نوع محموله‌ها)
     */
    public function awb(Shipment $shipment)
    {
        try {
            Log::info('Generating AWB PDF', ['shipment_id' => $shipment->id]);

            $content = $this->pdf->awb($shipment);

            Log::info('AWB PDF generated successfully', ['awb' => $shipment->awb_no]);

            return response($content, 200, [
                'Content-Type' => 'application/pdf',
                'Content-Disposition' => 'attachment; filename="AWB-' . $shipment->awb_no . '.pdf"',
            ]);
        } catch (\Throwable $e) {
            Log::error('AWB PDF generation failed', [
                'shipment_id' => $shipment->id,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return response('PDF generation failed: ' . $e->getMessage(), 500);
        }
    }

    /**
     * تولید Invoice PDF — فقط برای محموله‌های دارای کالا (PARCEL)
     *
     * محموله‌های DOC (DOC_NORMAL/DOC_ECONOMY) که کالا ندارن،
     * فاکتور صادراتی ندارن و این متد براشون ارور برمی‌گردونه.
     */
    public function invoice(Shipment $shipment)
    {
        try {
            // بارگذاری items برای بررسی
            $shipment->loadMissing(['items']);

            // بررسی نوع محموله
            $isDocType = in_array($shipment->type, [
                ShipmentType::DocNormal,
                ShipmentType::DocEconomy,
            ]);

            if ($isDocType && $shipment->items->isEmpty()) {
                Log::info('Invoice PDF not available for DOC shipment without items', [
                    'shipment_id' => $shipment->id,
                    'type' => $shipment->type?->value,
                ]);

                return response()->json([
                    'success' => false,
                    'message' => 'فاکتور فقط برای محموله‌های دارای کالا (PARCEL) صادر می‌شود.',
                    'hint' => 'محموله‌های DOC (مدارک) فاکتور صادراتی ندارند.',
                ], 400);
            }

            $content = $this->pdf->invoice($shipment);

            Log::info('Invoice PDF generated successfully', [
                'awb' => $shipment->awb_no,
                'type' => $shipment->type?->value,
                'items_count' => $shipment->items->count(),
            ]);

            return response($content, 200, [
                'Content-Type' => 'application/pdf',
                'Content-Disposition' => 'attachment; filename="INVOICE-' . $shipment->awb_no . '.pdf"',
            ]);
        } catch (\InvalidArgumentException $e) {
            // خطای مربوط به نوع محموله
            Log::info('Invoice PDF skipped', [
                'shipment_id' => $shipment->id,
                'reason' => $e->getMessage(),
            ]);

            return response()->json([
                'success' => false,
                'message' => $e->getMessage(),
            ], 400);
        } catch (\Throwable $e) {
            Log::error('Invoice PDF generation failed', [
                'shipment_id' => $shipment->id,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return response('PDF generation failed: ' . $e->getMessage(), 500);
        }
    }

    /**
     * تولید Label PDF — اندازه استاندارد لیبل پستی (100x150mm)
     */
    public function label(Shipment $shipment)
    {
        try {
            $content = $this->pdf->label($shipment);

            Log::info('Label PDF generated successfully', ['awb' => $shipment->awb_no]);

            return response($content, 200, [
                'Content-Type' => 'application/pdf',
                'Content-Disposition' => 'attachment; filename="LABEL-' . $shipment->awb_no . '.pdf"',
            ]);
        } catch (\Throwable $e) {
            Log::error('Label PDF generation failed', [
                'shipment_id' => $shipment->id,
                'error' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            return response('PDF generation failed: ' . $e->getMessage(), 500);
        }
    }
}