<?php

namespace App\Jobs;

use App\Models\Event;
use App\Models\EventOccurrence;
use App\Models\Source;
use App\Services\EventImportService;
use Illuminate\Bus\Queueable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class ImportEventsJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public function __construct(public Source $source)
    {
    }

    public function handle(EventImportService $importService): void
    {
        DB::transaction(function () use ($importService) {
            $events = $this->fetchExternalEvents($importService);

            foreach ($events as $eventData) {
                $this->createOrUpdateEvent($eventData);
            }

            $this->source->update(['last_import_at' => now()]);
        });
    }

    protected function fetchExternalEvents(EventImportService $importService): array
    {
        if (str_contains($this->source->url, 'stadt-dresden')) {
            try {
                return $importService->fetchFromDresdenCityAPI(50);
            } catch (\Throwable $exception) {
                Log::warning('Dresden import failed, falling back to sample data: ' . $exception->getMessage());
            }
        }

        return [
            [
                'external_id' => "source-{$this->source->id}-sample-1",
                'title' => 'Stadtführung durch die historische Altstadt',
                'description' => 'Geführte Tour durch die schönsten Sehenswürdigkeiten Dresdens.',
                'location' => 'Dresdner Altstadt',
                'category' => 'Stadtführung',
                'image_url' => 'https://example.com/images/stadtfuehrung.jpg',
                'website_url' => $this->source->url,
                'contact_email' => 'info@stadt-dresden.de',
                'contact_phone' => '+49 351 1234567',
                'status' => 'published',
                'occurrences' => [
                    [
                        'start_datetime' => now()->addDays(3)->setTime(10, 0)->toDateTimeString(),
                        'end_datetime' => now()->addDays(3)->setTime(12, 0)->toDateTimeString(),
                        'is_all_day' => false,
                        'location_details' => 'Treffpunkt: Theaterplatz',
                        'capacity' => 25,
                        'available_tickets' => 12,
                        'price' => 19.90,
                        'status' => 'scheduled',
                    ],
                ],
            ],
        ];
    }

    protected function createOrUpdateEvent(array $data): Event
    {
        $event = Event::updateOrCreate(
            [
                'source_id' => $this->source->id,
                'external_id' => $data['external_id'],
            ],
            [
                'title' => $data['title'],
                'description' => $data['description'] ?? null,
                'location' => $data['location'] ?? null,
                'category' => $data['category'] ?? null,
                'image_url' => $data['image_url'] ?? null,
                'website_url' => $data['website_url'] ?? null,
                'contact_email' => $data['contact_email'] ?? null,
                'contact_phone' => $data['contact_phone'] ?? null,
                'status' => $data['status'] ?? 'published',
                'slug' => $data['slug'] ?? null,
            ]
        );

        if (!empty($data['occurrences']) && is_array($data['occurrences'])) {
            foreach ($data['occurrences'] as $occurrenceData) {
                EventOccurrence::updateOrCreate(
                    [
                        'event_id' => $event->id,
                        'start_datetime' => $occurrenceData['start_datetime'],
                    ],
                    [
                        'end_datetime' => $occurrenceData['end_datetime'] ?? null,
                        'is_all_day' => $occurrenceData['is_all_day'] ?? false,
                        'location_details' => $occurrenceData['location_details'] ?? null,
                        'capacity' => $occurrenceData['capacity'] ?? null,
                        'available_tickets' => $occurrenceData['available_tickets'] ?? null,
                        'price' => $occurrenceData['price'] ?? null,
                        'status' => $occurrenceData['status'] ?? 'scheduled',
                    ]
                );
            }
        }

        return $event;
    }
}