<?php

namespace Tests\Feature;

use App\Models\Label;
use App\Models\Service;
use App\Models\ServiceAgendaItem;
use App\Models\ServiceSong;
use App\Models\Setting;
use App\Models\Song;
use App\Services\PlaylistExportService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\Storage;
use ProPresenter\Parser\ProPlaylistReader;
use Tests\TestCase;

final class CountdownSlideExportTest extends TestCase
{
    use RefreshDatabase;

    protected function setUp(): void
    {
        parent::setUp();

        Storage::fake('public');
    }

    public function test_countdown_slide_is_first_with_clock_and_keyvisual_background(): void
    {
        Setting::set('add_countdown_slide', '1');

        Storage::disk('public')->put('slides/kv.jpg', 'keyvisual-image');

        $service = $this->serviceWithSong('Mit Countdown', 'slides/kv.jpg');

        $result = app(PlaylistExportService::class)->generatePlaylist($service);
        $playlist = ProPlaylistReader::read($result['path']);
        $entries = $playlist->getEntries();

        $first = $entries[0];
        $this->assertSame('Countdown', $first->getName(), 'Countdown must be the very first playlist item');
        $this->assertTrue($first->isPresentation());

        $countdownSong = $playlist->getEmbeddedSong($first->getDocumentFilename());
        $this->assertNotNull($countdownSong, 'Embedded Countdown .pro missing');

        $slides = $this->allParserSlides($countdownSong);
        $this->assertCount(1, $slides);

        $slide = $slides[0];
        $this->assertTrue($slide->hasClock(), 'Countdown slide must carry a live clock element');
        $this->assertSame('HH:mm', $slide->getClockFormat());
        $this->assertTrue($slide->hasBackgroundMedia(), 'Countdown slide must have the key-visual as background');
        $this->assertSame('KEY_VISUAL.jpg', $slide->getBackgroundMediaUrl());

        $embeddedMedia = $playlist->getEmbeddedMediaFiles();
        $this->assertArrayHasKey('KEY_VISUAL.jpg', $embeddedMedia, 'Key-visual must be embedded under fixed name');
        $this->assertSame('keyvisual-image', $embeddedMedia['KEY_VISUAL.jpg']);

        $this->cleanupTempDir($result['temp_dir']);
    }

    public function test_no_countdown_slide_when_setting_disabled(): void
    {
        Setting::set('add_countdown_slide', '0');

        Storage::disk('public')->put('slides/kv.jpg', 'keyvisual-image');

        $service = $this->serviceWithSong('Ohne Countdown', 'slides/kv.jpg');

        $result = app(PlaylistExportService::class)->generatePlaylist($service);
        $playlist = ProPlaylistReader::read($result['path']);
        $names = array_map(fn ($entry) => $entry->getName(), $playlist->getEntries());

        $this->assertNotContains('Countdown', $names);

        $this->cleanupTempDir($result['temp_dir']);
    }

    public function test_no_countdown_slide_when_enabled_but_no_keyvisual(): void
    {
        Setting::set('add_countdown_slide', '1');

        $service = $this->serviceWithSong('Countdown ohne KV', null);

        $result = app(PlaylistExportService::class)->generatePlaylist($service);
        $playlist = ProPlaylistReader::read($result['path']);
        $names = array_map(fn ($entry) => $entry->getName(), $playlist->getEntries());

        $this->assertNotContains('Countdown', $names);

        $this->cleanupTempDir($result['temp_dir']);
    }

    private function serviceWithSong(string $title, ?string $keyVisualFilename): Service
    {
        $service = Service::factory()->create([
            'title' => $title,
            'date' => now(),
            'key_visual_filename' => $keyVisualFilename,
            'background_filename' => null,
            'has_agenda' => true,
        ]);

        $song = $this->createSongWithContent($title.' Lied');
        $serviceSong = ServiceSong::create([
            'service_id' => $service->id,
            'song_id' => $song->id,
            'cts_song_name' => $title.' Lied',
            'order' => 1,
        ]);
        ServiceAgendaItem::factory()->create([
            'service_id' => $service->id,
            'title' => $title.' Lied',
            'service_song_id' => $serviceSong->id,
            'sort_order' => 1,
            'is_before_event' => false,
        ]);

        return $service;
    }

    private function createSongWithContent(string $title): Song
    {
        $song = Song::create([
            'title' => $title,
            'ccli_id' => fake()->unique()->numerify('#####'),
            'author' => 'Test Author',
            'copyright_text' => 'Test Publisher',
        ]);

        $label = Label::firstOrCreate(
            ['name' => 'Verse 1 - '.$title],
            ['color' => '#2196F3'],
        );
        $section = $song->sections()->create(['label_id' => $label->id, 'order' => 0]);
        $section->slides()->create(['order' => 0, 'text_content' => 'Erste Zeile']);

        $arrangement = $song->arrangements()->create(['name' => 'normal', 'is_default' => true]);
        $arrangement->arrangementSections()->create(['song_section_id' => $section->id, 'order' => 0]);

        return $song;
    }

    private function allParserSlides(\ProPresenter\Parser\Song $parserSong): array
    {
        $slides = [];

        foreach ($parserSong->getGroups() as $group) {
            foreach ($parserSong->getSlidesForGroup($group) as $slide) {
                $slides[] = $slide;
            }
        }

        return $slides;
    }

    private function cleanupTempDir(string $dir): void
    {
        if (! is_dir($dir)) {
            return;
        }

        $items = scandir($dir);
        if ($items === false) {
            return;
        }

        foreach ($items as $item) {
            if ($item === '.' || $item === '..') {
                continue;
            }

            $path = $dir.'/'.$item;
            is_dir($path) ? $this->cleanupTempDir($path) : unlink($path);
        }

        rmdir($dir);
    }
}