<?php

namespace App\Services;

use App\Utils\ImageDownloader;
use App\Models\AdultVideo;
use GuzzleHttp\Client;
use Exception;

class XbvrSyncService extends BaseSyncService
{
    private Client $httpClient;
    private ?string $apiKey;
    private string $baseUrl;
    private ImageDownloader $imageDownloader;
    private int $processedCount = 0;
    private int $newCount = 0;
    private int $updatedCount = 0;

    public function __construct(\PDO $pdo, array $source)
    {
        parent::__construct($pdo, $source);
        $this->httpClient = new Client([
            'timeout' => 30,
            'headers' => [
                'User-Agent' => 'MediaCollector/1.0',
                'X-API-Key' => $source['api_key']
            ]
        ]);
        $this->apiKey = $source['api_key'];
        $this->baseUrl = rtrim($source['api_url'], '/');
        $this->imageDownloader = new ImageDownloader();
    }

    protected function executeSync(string $syncType): void
    {
        if (empty($this->apiKey) || empty($this->baseUrl)) {
            throw new Exception('XBVR API key and URL not configured');
        }

        $this->logProgress('Starting XBVR library sync...');

        // Sync VR scenes
        $this->syncScenes();

        $this->logProgress("Processed {$this->processedCount} XBVR items");
    }

    private function syncScenes(): void
    {
        try {
            $scenes = $this->getXbvrScenes();

            foreach ($scenes as $sceneData) {
                $this->syncScene($sceneData);
                $this->processedCount++;
            }
        } catch (Exception $e) {
            $this->logProgress('Error syncing XBVR scenes: ' . $e->getMessage());
        }
    }

    private function getXbvrScenes(): array
    {
        try {
            // XBVR API endpoint for scenes
            $response = $this->httpClient->get("{$this->baseUrl}/api/scene");

            $data = json_decode($response->getBody(), true);

            if (!isset($data['scenes'])) {
                throw new Exception('No scenes found in XBVR');
            }

            return $data['scenes'];
        } catch (Exception $e) {
            throw new Exception('Failed to fetch XBVR scenes: ' . $e->getMessage());
        }
    }

    private function syncScene(array $sceneData): void
    {
        $adultVideoModel = new AdultVideo($this->pdo);

        // Check if scene already exists by xbvr_id in metadata
        $stmt = $this->pdo->prepare("
            SELECT id, metadata FROM adult_videos
            WHERE source_id = :source_id
        ");
        $stmt->execute(['source_id' => $this->source['id']]);
        $existingScenes = $stmt->fetchAll(\PDO::FETCH_ASSOC);

        $existingScene = null;
        foreach ($existingScenes as $scene) {
            $metadata = json_decode($scene['metadata'], true);
            if (isset($metadata['xbvr_id']) && $metadata['xbvr_id'] === $sceneData['id']) {
                $existingScene = $scene;
                break;
            }
        }

    private function syncScene(array $sceneData): void
    {
        $adultVideoModel = new AdultVideo($this->pdo);

        // Check if scene already exists by xbvr_id in metadata
        $stmt = $this->pdo->prepare("
            SELECT id, metadata FROM adult_videos
            WHERE source_id = :source_id
        ");
        $stmt->execute(['source_id' => $this->source['id']]);
        $existingScenes = $stmt->fetchAll(\PDO::FETCH_ASSOC);

        $existingScene = null;
        foreach ($existingScenes as $scene) {
            $metadata = json_decode($scene['metadata'], true);
            if (isset($metadata['xbvr_id']) && $metadata['xbvr_id'] === $sceneData['id']) {
                $existingScene = $scene;
                break;
            }
        }

        // Download images locally
        $coverFilename = null;
        $screenshotFilename = null;

        if (!empty($sceneData['cover_url'])) {
            $coverFilename = $this->imageDownloader->generateFilename($sceneData['cover_url'], 'cover');
            $localCoverPath = $this->imageDownloader->downloadImage($sceneData['cover_url'], $coverFilename, 'adult_videos');
            if ($localCoverPath) {
                $sceneData['local_cover_path'] = $this->imageDownloader->getPublicUrl($localCoverPath);
            }
        }

        if (!empty($sceneData['screenshot_url'])) {
            $screenshotFilename = $this->imageDownloader->generateFilename($sceneData['screenshot_url'], 'screenshot');
            $localScreenshotPath = $this->imageDownloader->downloadImage($sceneData['screenshot_url'], $screenshotFilename, 'adult_videos');
            if ($localScreenshotPath) {
                $sceneData['local_screenshot_path'] = $this->imageDownloader->getPublicUrl($localScreenshotPath);
            }
        }

        // Handle actors
        $actors = $this->syncActors($sceneData['cast'] ?? []);

        $sceneData = [
            'title' => $sceneData['title'] ?: 'Untitled VR Scene',
            'overview' => $sceneData['synopsis'] ?? null,
            'release_date' => $sceneData['release_date'] ? date('Y-m-d', strtotime($sceneData['release_date'])) : null,
            'runtime_minutes' => $sceneData['duration'] ?? null,
            'rating' => $sceneData['rating'] ?? null,
            'source_id' => $this->source['id'],
            'external_id' => $sceneData['id'],
            'metadata' => json_encode([
                'xbvr_id' => $sceneData['id'],
                'xbvr_url' => $sceneData['scene_url'] ?? null,
                'cast' => $sceneData['cast'] ?? [],
                'actors' => $actors,
                'tags' => $sceneData['tags'] ?? [],
                'is_available' => $sceneData['is_available'] ?? true,
                'is_watched' => $sceneData['is_watched'] ?? false,
                'watch_count' => $sceneData['watch_count'] ?? 0,
                'video_length' => $sceneData['video_length'] ?? null,
                'video_width' => $sceneData['video_width'] ?? null,
                'video_height' => $sceneData['video_height'] ?? null,
                'video_codec' => $sceneData['video_codec'] ?? null,
                'file_path' => $sceneData['file_path'] ?? null,
                'cover_url' => $sceneData['cover_url'] ?? null,
                'local_cover_path' => $sceneData['local_cover_path'] ?? null,
                'screenshot_url' => $sceneData['screenshot_url'] ?? null,
                'local_screenshot_path' => $sceneData['local_screenshot_path'] ?? null
            ])
        ];

        if ($existingScene) {
            $adultVideoModel->update($existingScene['id'], $sceneData);
            $this->updatedCount++;
        } else {
            $adultVideoModel->create($sceneData);
            $this->newCount++;
        }
    }

    private function syncActors(array $cast): array
    {
        $actors = [];

        foreach ($cast as $actorName) {
            if (empty($actorName)) continue;

            $actor = $this->getOrCreateActor($actorName);
            if ($actor) {
                $actors[] = $actor;
            }
        }

        return $actors;
    }

    private function getOrCreateActor(string $name): ?array
    {
        // Check if actor already exists
        $stmt = $this->pdo->prepare("
            SELECT id, name, thumbnail_path FROM actors WHERE name = :name
        ");
        $stmt->execute(['name' => $name]);
        $existingActor = $stmt->fetch(\PDO::FETCH_ASSOC);

        if ($existingActor) {
            return [
                'id' => $existingActor['id'],
                'name' => $existingActor['name'],
                'thumbnail_path' => $existingActor['thumbnail_path']
            ];
        }

        // For now, we'll create actor without thumbnail
        // In a full implementation, you'd fetch actor details from XBVR API
        try {
            $stmt = $this->pdo->prepare("
                INSERT INTO actors (name, created_at, updated_at)
                VALUES (:name, NOW(), NOW())
            ");
            $stmt->execute(['name' => $name]);
            $actorId = $this->pdo->lastInsertId();

            return [
                'id' => $actorId,
                'name' => $name,
                'thumbnail_path' => null
            ];
        } catch (Exception $e) {
            $this->logProgress("Failed to create actor {$name}: " . $e->getMessage());
            return null;
        }
    }

    protected function getProcessedCount(): int
    {
        return $this->processedCount;
    }

    protected function getNewCount(): int
    {
        return $this->newCount;
    }

    protected function getUpdatedCount(): int
    {
        return $this->updatedCount;
    }

    protected function getDeletedCount(): int
    {
        return 0; // XBVR doesn't provide deletion info in this context
    }
}