Questionarie

QuestionnaireInterface.php

<?php


namespace App\Contracts;


interface QuestionnaireInterface
{
    public function setQuestion(string $question);
    public function setAnswer(string $answer, bool $isValid);
    public function save();
    public function checkAnswer($id);
}

SingleAnswerService.php

<?php


namespace App\Services;


use App\Contracts\QuestionnaireInterface;

class SingleAnswerService implements QuestionnaireInterface
{
    protected $question;
    protected $answers = [];
    protected $id;
    protected $other;

    public function __construct()
    {
        $this->id = uniqid();
    }

    public function setQuestion(string $question)
    {
        $this->question = $question;
    }

    public function setAnswer(string $answer, bool $isValid = true)
    {
        $this->answers[] = [
            'id' => uniqid(),
            'answer' => $answer,
            'is_valid' => $isValid
        ];
    }

    public function setOther(string $other)
    {
        $this->other = $other;
    }

    protected function validate()
    {
        $filtered = array_filter($this->answers, function ($answer) {
            return $answer['is_valid'];
        });

        if (empty($filtered)) {
            throw new \Exception('Questionnaire should have at least one correct answer');
        }
    }

    public function save(): array
    {
        $this->validate();

        return [
            'question' => $this->question,
            'answers' => $this->answers
        ];
    }

    public function checkAnswer($id): bool
    {
        $answer = array_filter($this->answers, function ($answer) use ($id){
            return $answer['id'] === $id;
        });
        $answer = array_values($answer);

        return $answer[0]['is_valid'];
    }
}

web.php

<?php

use Illuminate\Support\Facades\Route;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', function () {

    $singleAnswer = new \App\Services\SingleAnswerService();

    $singleAnswer->setQuestion('What is your age?');

    $singleAnswer->setAnswer('14-16', true);
    $singleAnswer->setAnswer('17-24', false);
    $singleAnswer->setAnswer('25-30', false);

    $question = $singleAnswer->save();

    $checkAnswer = $singleAnswer->checkAnswer($question['answers'][1]['id']);

    dd($checkAnswer);

    return view('welcome');
});