<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Comment extends Model
{
    protected $fillable = [
        'user_id', 'commentable_type', 'commentable_id',
        'parent_id', 'content', 'gif_url', 'status', 'is_pinned', 'like_count',
    ];

    protected $casts = ['is_pinned' => 'boolean'];

    public function likes()
    {
        return $this->hasMany(CommentLike::class);
    }

    public function isLikedBy(?int $userId): bool
    {
        if (!$userId) return false;
        return $this->likes()->where('user_id', $userId)->exists();
    }

    public function commentable()
    {
        return $this->morphTo();
    }

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

    public function parent()
    {
        return $this->belongsTo(Comment::class, 'parent_id');
    }

    public function replies()
    {
        return $this->hasMany(Comment::class, 'parent_id');
    }
}