<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Question extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'title',
        'description',
        'type',
        'difficulty',
        'category_id',
        'author_id',
        'variants',
        'is_pending_question',
        'correct_answers',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'is_pending_question' => 'boolean',
        'correct_answers' => 'array',
        'variants' => 'array',
    ];

    /**
     * Category relation (nullable, on delete set null).
     */
    public function category()
    {
        return $this->belongsTo(Category::class);
    }

    /**
     * Author relation (nullable, on delete set null).
     */
    public function author()
    {
        return $this->belongsTo(User::class, 'author_id');
    }

}