<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Video extends Model
{
    protected $fillable = [
        'user_id',
        'title',
        'description',
        'filename',
        'path',
        'thumbnail',
        'duration',
        'size',
        'mime_type',
        'orientation',
        'width',
        'height',
        'status',
        'visibility',
    ];

    protected $casts = [
        'duration' => 'integer',
        'size' => 'integer',
        'width' => 'integer',
        'height' => 'integer',
    ];

    // Relationships
    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function likes()
    {
        return $this->belongsToMany(User::class, 'video_likes')->withTimestamps();
    }

    public function viewers()
    {
        return $this->belongsToMany(User::class, 'video_views')->withTimestamps();
    }

    // Accessors
    public function getUrlAttribute()
    {
        return asset('storage/videos/' . $this->filename);
    }

    public function getThumbnailUrlAttribute()
    {
        if ($this->thumbnail) {
            return asset('storage/thumbnails/' . $this->thumbnail);
        }
        return asset('images/video-placeholder.jpg');
    }

    // Check if video is liked by user
    public function isLikedBy($user)
    {
        if (!$user) return false;
        return $this->likes()->where('user_id', $user->id)->exists();
    }

    // Get like count
    public function getLikeCountAttribute()
    {
        return $this->likes()->count();
    }

    // Get view count
    public function getViewCountAttribute()
    {
        return $this->viewers()->count();
    }

    // Get shareable URL for the video
    public function getShareUrlAttribute()
    {
        return route('videos.show', $this->id);
    }

    // Visibility helpers
    public function isPublic()
    {
        return $this->visibility === 'public';
    }

    public function isUnlisted()
    {
        return $this->visibility === 'unlisted';
    }

    public function isPrivate()
    {
        return $this->visibility === 'private';
    }

    // Check if user can view this video
    public function canView($user = null)
    {
        // Owner can always view
        if ($user && $this->user_id === $user->id) {
            return true;
        }

        // Public and unlisted videos can be viewed by anyone
        return in_array($this->visibility, ['public', 'unlisted']);
    }

    // Check if video is shareable
    public function isShareable()
    {
        // Only public and unlisted videos are shareable
        return in_array($this->visibility, ['public', 'unlisted']);
    }

    // Scope for public videos (home page, search)
    public function scopePublic($query)
    {
        return $query->where('visibility', 'public');
    }

    // Scope for videos visible to a specific user
    public function scopeVisibleTo($query, $user = null)
    {
        if ($user) {
            return $query->where(function ($q) use ($user) {
                $q->where('visibility', '!=', 'private')
                  ->orWhere('user_id', $user->id);
            });
        }
        return $query->where('visibility', '!=', 'private');
    }
}