<?php

namespace App\Models;

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

class UserTestAnswer extends Model
{
    use HasFactory;

    protected $fillable = [
        'question_id',
        'answer',
        'user_test_id',
        'user_id',
    ];
    protected $casts = [
        'answer' => 'array',
    ];

    public function isCorrect() {
        if(empty($this->answer))
                return false;

        if($this->question->type == 'text') {
            $correctAnswer = trim(strtolower($this->question->correct_answers[0]));
            $answer = trim(strtolower($this->answer[0]));

            return $correctAnswer == $answer;
        }
        if($this->question->type == 'single') {
            $correctAnswer = intval($this->question->correct_answers[0]);
            $answer = intval($this->answer[0]);

            return $correctAnswer == $answer;
        }

        if($this->question->type == 'multiple') {
            $correctAnswers = collect($this->question->correct_answers)->map(fn($a) => (int)$a)->sort()->values()->all();
            $answers = collect($this->answer)->map(fn($a) => (int)$a)->sort()->values()->all();

            return $correctAnswers === $answers;
        }

        return false;
    }

    public function question()
    {
        return $this->belongsTo(Question::class);
    }

    public function userTest()
    {
        return $this->belongsTo(UserTest::class);
    }

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