<?php

namespace App\Models;

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

class Test extends Model
{
    use HasFactory;

    protected $fillable = [
        'title',
        'description',
        'category_id',
        'author_id',
        'closed_at',
    ];


    protected $dates = [
        'closed_at',
        'created_at',
        'updated_at',
    ];

    public function isAvailable() 
    {
        return $this->closed_at === null || now()->lt($this->closed_at);
    }

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

    public function questions()
    {
        return $this->belongsToMany(Question::class)
                    ->withTimestamps();
    }

    
}