<?php

namespace App\Models;

class Movie extends Model
{
    protected string $table = 'movies';
    protected array $fillable = [
        'title',
        'overview',
        'director',
        'writer',
        'genre',
        'cast',
        'release_date',
        'runtime_minutes',
        'rating',
        'imdb_id',
        'tmdb_id',
        'poster_url',
        'backdrop_url',
        'watched',
        'watch_count',
        'is_favorite',
        'metadata',
        'source_id',
        'last_watched_at'
    ];

    protected array $casts = [
        'runtime_minutes' => 'int',
        'rating' => 'float',
        'watched' => 'bool',
        'watch_count' => 'int',
        'is_favorite' => 'bool',
        'release_date' => 'date',
        'last_watched_at' => 'datetime'
    ];

    public function 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;
    }

    public function markAsWatched(): bool
    {
        $this->watched = true;
        $this->watch_count += 1;
        $this->last_watched_at = date('Y-m-d H:i:s');
        return $this->update($this->id, [
            'watched' => $this->watched,
            'watch_count' => $this->watch_count,
            'last_watched_at' => $this->last_watched_at
        ]);
    }

    public function markAsUnwatched(): bool
    {
        $this->watched = false;
        return $this->update($this->id, [
            'watched' => $this->watched
        ]);
    }

    public function toggleFavorite(): bool
    {
        return $this->update($this->id, [
            'is_favorite' => !$this->is_favorite
        ]);
    }

    public function updateRating(float $rating): bool
    {
        return $this->update($this->id, [
            'rating' => min(10.0, max(0.0, $rating))
        ]);
    }

    public static function getStats(\PDO $pdo): array
    {
        $stmt = $pdo->query("
            SELECT
                COUNT(*) as total_movies,
                COUNT(CASE WHEN watched = 1 THEN 1 END) as watched_movies,
                SUM(watch_count) as total_watches,
                AVG(rating) as avg_rating,
                COUNT(CASE WHEN is_favorite = 1 THEN 1 END) as favorite_movies,
                SUM(runtime_minutes) as total_runtime
            FROM movies
        ");
        return $stmt->fetch(\PDO::FETCH_ASSOC);
    }

    public static function getRecent(\PDO $pdo, int $limit = 10): array
    {
        $stmt = $pdo->prepare("
            SELECT m.*, s.display_name as source_name
            FROM movies m
            JOIN sources s ON m.source_id = s.id
            WHERE m.last_watched_at IS NOT NULL
            ORDER BY m.last_watched_at DESC
            LIMIT :limit
        ");
        $stmt->execute(['limit' => $limit]);
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }

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

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

        $stmt = $pdo->prepare($sql);
        $stmt->execute($params);
        return (int) $stmt->fetch()['count'];
    }

    public static function getAllWithPagination(\PDO $pdo, int $page, int $perPage, string $search = ''): array
    {
        $offset = ($page - 1) * $perPage;

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

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

        $sql .= " ORDER BY m.title ASC 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 getAll(\PDO $pdo, int $limit = 100): array
    {
        $stmt = $pdo->prepare("
            SELECT m.*, s.display_name as source_name
            FROM movies m
            JOIN sources s ON m.source_id = s.id
            ORDER BY m.title ASC
            LIMIT :limit
        ");
        $stmt->execute(['limit' => $limit]);
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }

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

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

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

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

        return $this->update($this->id, [
            'cast' => $castString
        ]);
    }
}