<?php

namespace App\Models;

class AdultVideo extends Model
{
    protected string $table = 'adult_videos';
    protected array $fillable = [
        'title',
        'overview',
        'poster_url',
        'poster_aspect_ratio',
        'backdrop_url',
        'backdrop_aspect_ratio',
        'rating',
        'runtime_minutes',
        'release_date',
        'director',
        'writer',
        'cast',
        'genre',
        'metadata',
        'watched',
        'watch_count',
        'is_favorite',
        'source_id',
        'external_id'
    ];

    public static function getAllWithPagination(\PDO $pdo, int $page, int $perPage, string $search = '', array $genres = [], array $directors = [], array $sources = [], string $sort = 'recent'): array
    {
        $offset = ($page - 1) * $perPage;

        $sql = "
            SELECT av.*, s.display_name as source_name
            FROM adult_videos av
            JOIN sources s ON av.source_id = s.id
        ";
        $params = [];

        if (!empty($search)) {
            $sql .= " WHERE (av.title LIKE :search OR av.overview LIKE :search)";
            $params['search'] = "%{$search}%";
        }

        if (!empty($genres)) {
            $placeholders = [];
            foreach ($genres as $index => $genre) {
                $placeholders[] = ":genre_{$index}";
                $params["genre_{$index}"] = $genre;
            }
            $whereClause = !empty($search) ? " AND" : " WHERE";
            $sql .= $whereClause . " av.genre IN (" . implode(',', $placeholders) . ")";
        }

        if (!empty($directors)) {
            $placeholders = [];
            foreach ($directors as $index => $director) {
                $placeholders[] = ":director_{$index}";
                $params["director_{$index}"] = $director;
            }
            $whereClause = (!empty($search) || !empty($genres)) ? " AND" : " WHERE";
            $sql .= $whereClause . " av.director IN (" . implode(',', $placeholders) . ")";
        }

        if (!empty($sources)) {
            $placeholders = [];
            foreach ($sources as $index => $source) {
                $placeholders[] = ":source_{$index}";
                $params["source_{$index}"] = $source;
            }
            $whereClause = (!empty($search) || !empty($genres) || !empty($directors)) ? " AND" : " WHERE";
            $sql .= $whereClause . " s.display_name IN (" . implode(',', $placeholders) . ")";
        }

        // Add sorting
        $sortOptions = [
            'recent' => 'av.created_at DESC',
            'oldest' => 'av.created_at ASC',
            'title_asc' => 'av.title ASC',
            'title_desc' => 'av.title DESC',
            'year_asc' => 'av.release_date ASC',
            'year_desc' => 'av.release_date DESC',
            'rating_asc' => 'av.rating ASC',
            'rating_desc' => 'av.rating DESC',
            'views_asc' => 'av.watch_count ASC',
            'views_desc' => 'av.watch_count DESC',
            'runtime_asc' => 'av.runtime_minutes ASC',
            'runtime_desc' => 'av.runtime_minutes DESC',
        ];

        $sortOrder = $sortOptions[$sort] ?? $sortOptions['recent'];
        $sql .= " ORDER BY " . $sortOrder . " LIMIT :limit OFFSET :offset";

        $stmt = $pdo->prepare($sql);
        $stmt->bindValue(':limit', $perPage, \PDO::PARAM_INT);
        $stmt->bindValue(':offset', $offset, \PDO::PARAM_INT);

        foreach ($params as $key => $value) {
            $stmt->bindValue(":{$key}", $value);
        }

        $stmt->execute();
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }

    public static function getTotalCount(\PDO $pdo, string $search = '', array $genres = [], array $directors = [], array $sources = []): int
    {
        $sql = "SELECT COUNT(*) as count FROM adult_videos av JOIN sources s ON av.source_id = s.id";
        $params = [];

        if (!empty($search)) {
            $sql .= " WHERE (av.title LIKE :search OR av.overview LIKE :search)";
            $params['search'] = "%{$search}%";
        }

        if (!empty($genres)) {
            $placeholders = [];
            foreach ($genres as $index => $genre) {
                $placeholders[] = ":genre_{$index}";
                $params["genre_{$index}"] = $genre;
            }
            $whereClause = !empty($search) ? " AND" : " WHERE";
            $sql .= $whereClause . " av.genre IN (" . implode(',', $placeholders) . ")";
        }

        if (!empty($directors)) {
            $placeholders = [];
            foreach ($directors as $index => $director) {
                $placeholders[] = ":director_{$index}";
                $params["director_{$index}"] = $director;
            }
            $whereClause = (!empty($search) || !empty($genres)) ? " AND" : " WHERE";
            $sql .= $whereClause . " av.director IN (" . implode(',', $placeholders) . ")";
        }

        if (!empty($sources)) {
            $placeholders = [];
            foreach ($sources as $index => $source) {
                $placeholders[] = ":source_{$index}";
                $params["source_{$index}"] = $source;
            }
            $whereClause = (!empty($search) || !empty($genres) || !empty($directors)) ? " AND" : " WHERE";
            $sql .= $whereClause . " s.display_name IN (" . implode(',', $placeholders) . ")";
        }

        $stmt = $pdo->prepare($sql);
        foreach ($params as $key => $value) {
            $stmt->bindValue(":{$key}", $value);
        }
        $stmt->execute();
        return (int) $stmt->fetch()['count'];
    }

    public function markAsWatched(): bool
    {
        $stmt = $this->pdo->prepare("UPDATE adult_videos SET watched = 1, watch_count = watch_count + 1, updated_at = NOW() WHERE id = :id");
        return $stmt->execute(['id' => $this->id]);
    }

    public function markAsUnwatched(): bool
    {
        $stmt = $this->pdo->prepare("UPDATE adult_videos SET watched = 0, updated_at = NOW() WHERE id = :id");
        return $stmt->execute(['id' => $this->id]);
    }

    public function toggleFavorite(): bool
    {
        $stmt = $this->pdo->prepare("UPDATE adult_videos SET is_favorite = !is_favorite, updated_at = NOW() WHERE id = :id");
        return $stmt->execute(['id' => $this->id]);
    }

    public function source(): ?Source
    {
        $stmt = $this->pdo->prepare("SELECT * FROM sources WHERE id = :source_id");
        $stmt->execute(['source_id' => $this->source_id]);
        $sourceData = $stmt->fetch(\PDO::FETCH_ASSOC);

        return $sourceData ? new Source($this->pdo, $sourceData) : null;
    }

    /**
     * Get all actors associated with this adult video
     */
    public function actors($args)
    {
        $stmt = $this->pdo->prepare("
            SELECT a.*
            FROM actors a
            JOIN actor_adult_video aav ON a.id = aav.actor_id
            WHERE aav.adult_video_id = :adult_video_id
            ORDER BY a.name ASC
        ");
        $stmt->execute(['adult_video_id' => $args]);
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }

    /**
     * Add an actor to this adult video
     */
    public function addActor(int $actorId): bool
    {
        $stmt = $this->pdo->prepare("
            INSERT IGNORE INTO actor_adult_video (adult_video_id, actor_id)
            VALUES (:adult_video_id, :actor_id)
        ");
        return $stmt->execute([
            'adult_video_id' => $this->id,
            'actor_id' => $actorId
        ]);
    }

    /**
     * Remove an actor from this adult video
     */
    public function removeActor(int $actorId): bool
    {
        $stmt = $this->pdo->prepare("
            DELETE FROM actor_adult_video
            WHERE adult_video_id = :adult_video_id AND actor_id = :actor_id
        ");
        return $stmt->execute([
            'adult_video_id' => $this->id,
            'actor_id' => $actorId
        ]);
    }

    /**
     * Update the cast field with actor names
     */
    public function updateCastField(): bool
    {
        $actors = $this->actors($this->id);
        $actorNames = array_column($actors, 'name');
        $castString = implode(', ', $actorNames);

        return $this->update($this->id, [
            'cast' => $castString
        ]);
    }
    
    /**
     * Find single adult video by ID with metadata processing
     */
    public function find(int $id): ?array
    {
        $stmt = $this->pdo->prepare("
            SELECT av.*, s.display_name as source_name
            FROM adult_videos av
            JOIN sources s ON av.source_id = s.id
            WHERE av.id = :id
        ");
        $stmt->execute(['id' => $id]);
        $video = $stmt->fetch(\PDO::FETCH_ASSOC);
        
        if (!$video) {
            return null;
        }
        
        // Process metadata to extract additional fields
        if (!empty($video['metadata'])) {
            $metadata = json_decode($video['metadata'], true);
            
            // Extract poster aspect ratio from metadata if available
            if (!empty($metadata['poster_aspect_ratio'])) {
                $video['poster_aspect_ratio'] = $metadata['poster_aspect_ratio'];
            }
            
            // Use local cover path if available, otherwise fall back to original URL
            if (!empty($metadata['local_cover_path'])) {
                $video['poster_url'] = $metadata['local_cover_path'];
            } elseif (!empty($metadata['cover_url'])) {
                $video['poster_url'] = $metadata['cover_url'];
            }
            
            // Add screenshot URL if available
            if (!empty($metadata['screenshot_url'])) {
                $video['screenshot_url'] = $metadata['screenshot_url'];
            }
            
            // Add actors data if available
            if (!empty($metadata['actors'])) {
                $video['actors'] = $metadata['actors'];
            }
        }
        
        return $video;
    }

    /**
     * Get all adult videos with filtering and pagination
     */
    public function findAll(array $filters = [], int $limit = null, int $offset = 0): array
    {
        $sql = "
            SELECT av.*, s.display_name as source_name
            FROM adult_videos av
            JOIN sources s ON av.source_id = s.id
        ";
        $params = [];
        $whereClauses = [];

        // Search filter
        if (!empty($filters['search'])) {
            $whereClauses[] = "(av.title LIKE :search OR av.overview LIKE :search)";
            $params['search'] = "%{$filters['search']}%";
        }

        // Genre filter
        if (!empty($filters['genre'])) {
            $whereClauses[] = "av.genre = :genre";
            $params['genre'] = $filters['genre'];
        }

        // Year filter
        if (!empty($filters['year'])) {
            $whereClauses[] = "YEAR(av.release_date) = :year";
            $params['year'] = $filters['year'];
        }

        // Source filter
        if (!empty($filters['sources'])) {
            $sources = is_array($filters['sources']) ? $filters['sources'] : [$filters['sources']];
            $placeholders = [];
            foreach ($sources as $index => $source) {
                $placeholders[] = ":source_{$index}";
                $params["source_{$index}"] = $source;
            }
            $whereClauses[] = "s.display_name IN (" . implode(',', $placeholders) . ")";
        }

        // Combine WHERE clauses
        if (!empty($whereClauses)) {
            $sql .= " WHERE " . implode(' AND ', $whereClauses);
        }

        // Add ordering and pagination
        $sql .= " ORDER BY av.release_date DESC, av.title ASC";

        if ($limit) {
            $sql .= " LIMIT :limit OFFSET :offset";
            $params['limit'] = $limit;
            $params['offset'] = $offset;
        }

        $stmt = $this->pdo->prepare($sql);
        $stmt->execute($params);
        $results = $stmt->fetchAll(\PDO::FETCH_ASSOC);
        
        // Process metadata to extract additional fields
        foreach ($results as &$video) {
            if (!empty($video['metadata'])) {
                $metadata = json_decode($video['metadata'], true);
                
                // Extract poster aspect ratio from metadata if available
                if (!empty($metadata['poster_aspect_ratio'])) {
                    $video['poster_aspect_ratio'] = $metadata['poster_aspect_ratio'];
                }
                
                // Use local cover path if available, otherwise fall back to original URL
                if (!empty($metadata['local_cover_path'])) {
                    $video['poster_url'] = $metadata['local_cover_path'];
                } elseif (!empty($metadata['cover_url'])) {
                    $video['poster_url'] = $metadata['cover_url'];
                }
                
                // Add actors data if available
                if (!empty($metadata['actors'])) {
                    $video['actors'] = $metadata['actors'];
                }
            }
        }
        
        return $results;
    }

    /**
     * Count adult videos with filters
     */
    public function count(array $filters = []): int
    {
        $sql = "
            SELECT COUNT(*) as total
            FROM adult_videos av
            JOIN sources s ON av.source_id = s.id
        ";
        $params = [];
        $whereClauses = [];

        // Search filter
        if (!empty($filters['search'])) {
            $whereClauses[] = "(av.title LIKE :search OR av.overview LIKE :search)";
            $params['search'] = "%{$filters['search']}%";
        }

        // Genre filter
        if (!empty($filters['genre'])) {
            $whereClauses[] = "av.genre = :genre";
            $params['genre'] = $filters['genre'];
        }

        // Year filter
        if (!empty($filters['year'])) {
            $whereClauses[] = "YEAR(av.release_date) = :year";
            $params['year'] = $filters['year'];
        }

        // Source filter
        if (!empty($filters['sources'])) {
            $sources = is_array($filters['sources']) ? $filters['sources'] : [$filters['sources']];
            $placeholders = [];
            foreach ($sources as $index => $source) {
                $placeholders[] = ":source_{$index}";
                $params["source_{$index}"] = $source;
            }
            $whereClauses[] = "s.display_name IN (" . implode(',', $placeholders) . ")";
        }

        // Combine WHERE clauses
        if (!empty($whereClauses)) {
            $sql .= " WHERE " . implode(' AND ', $whereClauses);
        }

        $stmt = $this->pdo->prepare($sql);
        $stmt->execute($params);
        $result = $stmt->fetch(\PDO::FETCH_ASSOC);
        return (int)$result['total'];
    }

    /**
     * Get available genres for filtering
     */
    public static function getAvailableGenres(\PDO $pdo): array
    {
        $stmt = $pdo->query("
            SELECT DISTINCT genre
            FROM adult_videos
            WHERE genre IS NOT NULL AND genre != ''
            ORDER BY genre
        ");
        return $stmt->fetchAll(\PDO::FETCH_COLUMN);
    }

    /**
     * Get available directors for filtering
     */
    public static function getAvailableDirectors(\PDO $pdo): array
    {
        $stmt = $pdo->query("
            SELECT DISTINCT director
            FROM adult_videos
            WHERE director IS NOT NULL AND director != ''
            ORDER BY director
        ");
        return $stmt->fetchAll(\PDO::FETCH_COLUMN);
    }

    /**
     * Get available sources for filtering
     */
    public static function getAvailableSources(\PDO $pdo): array
    {
        $stmt = $pdo->query("
            SELECT DISTINCT s.display_name
            FROM sources s
            JOIN adult_videos av ON s.id = av.source_id
            WHERE s.display_name IS NOT NULL AND s.display_name != ''
            ORDER BY s.display_name
        ");
        return $stmt->fetchAll(\PDO::FETCH_COLUMN);
    }

    /**
     * Get TV show statistics
     */
    public static function getStats(\PDO $pdo): array
    {
        $stmt = $pdo->query("
            SELECT
                COUNT(*) as total_adult_videos,
                COUNT(CASE WHEN is_favorite = 1 THEN 1 END) as favorite_adult_videos,
                AVG(rating) as avg_rating
            FROM adult_videos
        ");
        return $stmt->fetch(\PDO::FETCH_ASSOC);
    }
    
    /**
     * Search actors by name
     */
    public static function searchActors(\PDO $pdo, string $query): array
    {
        $stmt = $pdo->prepare("
            SELECT a.* 
            FROM actors a
            WHERE a.name LIKE :query
            ORDER BY a.name
            LIMIT 10
        ");
        
        $stmt->execute(['query' => "%{$query}%"]);
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }
}