POC for #118

app/Http/Controllers/ReviewController.php

@@ -0,0 +1,151 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Quiz\Question;
+use App\Quiz\QuizState;
+use Illuminate\Http\Request;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Storage;
+use Illuminate\Support\Str;
+
+class ReviewController extends Controller
+{
+    /**
+     * @var QuizState
+     */
+    public QuizState $quiz;
+
+    /**
+     * Display the welcome page.
+     *
+     * @throws \Exception
+     */
+    public function index()
+    {
+        return view('review.index');
+    }
+
+    /**
+     * Set collection of questions and start the quiz.
+     *
+     * @throws \Exception
+     *
+     * @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
+     */
+    public function start()
+    {
+        $this->quiz = new QuizState($this->questions());
+
+        return $this->show();
+    }
+
+    /**
+     * Move to the next question.
+     *
+     * @param \Illuminate\Http\Request $request
+     *
+     * @throws \Exception
+     *
+     * @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
+     */
+    public function next(Request $request)
+    {
+        $this->quiz ??= unserialize($request->session()->get('review'));
+
+        $this->quiz->next();
+
+        return $this->show();
+    }
+
+    /**
+     * Process user's answer.
+     *
+     * @param Request $request
+     *
+     * @throws \Exception
+     *
+     * @return \Illuminate\Contracts\Foundation\Application|\Illuminate\Contracts\View\Factory|\Illuminate\Contracts\View\View|void
+     */
+    public function answer(Request $request)
+    {
+        $userAnswer = $request->get('answer');
+        $this->quiz = unserialize($request->session()->get('review'));
+
+        $this->quiz->applyAnswer($userAnswer);
+
+        return $this->show();
+    }
+
+    /**
+     * Display the quiz page.
+     *
+     * @throws \Exception
+     */
+    protected function show()
+    {
+        session()->put('review', serialize($this->quiz));
+
+        return turbo_stream_view(view('review.quiz', [
+            'quiz'               => $this->quiz,
+            'currentQuestion'    => $this->quiz->question(),
+        ]));
+    }
+
+    /**
+     * Generate questions for the quiz.
+     *
+     * Randomly choose one situation for each emotion.
+     *
+     * @throws \Exception
+     *
+     * @return Collection
+     */
+    public function questions(): Collection
+    {
+        $storage = Storage::disk('review');
+
+        return collect($storage->allFiles('beginning'))
+            ->map(fn ($path) => $storage->get($path))
+            ->map(function ($content) {
+                $question = Str::of($content)
+                    ->between('<question>', '</question>')
+                    ->trim()
+                    ->toString();
+
+                $answers = Str::of($content)
+                    ->matchAll("/<answer>(.*?)<\/answer>/s")
+                    ->map(fn ($answer) => trim($answer));
+
+                $correct = Str::of($content)
+                    ->between('<correct>', '</correct>')
+                    ->trim()
+                    ->toString();
+
+                return Question::make($question)
+                    ->answers($answers->push($correct)->toArray())
+                    ->setCorrectAnswer($correct);
+            });
+
+        /*
+         * Example of questions for the quiz.
+        $example = [
+            Question::make(['Какой компонент Laravel позволяет управлять операциями с базой данных упрощенным способом?', 'Какая функция в Laravel упрощает взаимодействие с базой данных?'])
+                ->answers(['Eloquent ORM', 'Lumen', 'Blade', 'Artisan', 'Eloquent'])
+                ->setCorrectAnswer('Eloquent ORM'),
+
+            Question::make(['Какая функция Laravel предоставляет удобный способ определения логики авторизации в приложении?', 'Какой компонент Laravel упрощает задачи авторизации пользователей?'])
+                ->answers(['Blade', 'Middleware', 'Eloquent ORM', 'Authentication', 'Policies'])
+                ->setCorrectAnswer('Policies'),
+
+            Question::make(['Какой инструмент командной строки в Laravel помогает с повторяющимися задачами, такими как миграции базы данных и их наполнение данными?', 'Какой компонент Laravel используется для задач в командной строке?'])
+                ->answers(['Composer', 'Eloquent ORM', 'Blade', 'Artisan', 'Artisan'])
+                ->setCorrectAnswer('Artisan'),
+
+            Question::make(['Какая функция Laravel позволяет разработчикам создавать модульный, многократно используемый код?', 'Какое понятие Laravel способствует повторному использованию кода и его поддержке?'])
+                ->answers(['Routing', 'Middleware', 'Blade', 'Controllers', 'Middleware'])
+                ->setCorrectAnswer('Middleware'),
+        ];
+        */
+    }
+}

app/Quiz/Question.php

@@ -0,0 +1,143 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Quiz;
+
+use Illuminate\Support\Str;
+
+class Question
+{
+    /**
+     * @var array
+     */
+    public array $answers = [];
+
+    /**
+     * @var string
+     */
+    public string $title = '';
+    /**
+     * @var string
+     */
+    public string $correctAnswer;
+
+    /**
+     * @param string $title
+     */
+    public function __construct(string $title)
+    {
+        $this->title = $title;
+    }
+
+    /**
+     * @param string $title
+     *
+     * @return \App\Quiz\Question
+     */
+    public static function make(mixed $title): Question
+    {
+        // если передан массив вопросов(ситуаций) - нужно выбрать один вопрос
+        if (is_array($title)) {
+            $key = array_rand($title, 1);
+
+            return new self($title[$key]);
+        }
+
+        return new self($title);
+    }
+
+    /**
+     * @param array $answers
+     * @param int   $count
+     *
+     * @return $this
+     */
+    public function answers(array $answers, int $count = 4): Question
+    {
+        $this->answers = $count !== 0 && $count < count($answers) ? $this->randomValues($answers, $count) : $answers;
+
+        return $this;
+    }
+
+    /**
+     * @param string $correctAnswer
+     *
+     * @throws \Exception
+     *
+     * @return $this
+     */
+    public function setCorrectAnswer(string $correctAnswer)
+    {
+        $this->correctAnswer = $correctAnswer;
+        if (! in_array($correctAnswer, $this->answers)) {
+            // нужно не только задать правильный ответ, но и добавить его в массив с вопросами
+            $number = random_int(0, count($this->answers)); // правильный ответ положим в массив ответов на место $number
+            array_splice($this->answers, $number, 0, $correctAnswer);
+        }
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getCorrectAnswer()
+    {
+        return $this->correctAnswer;
+    }
+
+    /**
+     * @param string $ansver
+     *
+     * @return bool
+     */
+    public function isCorrect(string $ansver): bool
+    {
+        return $ansver === $this->correctAnswer;
+    }
+
+    public function getTitle()
+    {
+        return Str::of($this->title)->markdown();
+    }
+
+    public function getAnswers()
+    {
+        return $this->answers;
+    }
+
+    public function toArray()
+    {
+        return get_object_vars($this);
+    }
+
+    /**
+     * @param $value
+     *
+     * @throws \Exception
+     *
+     * @return \App\Quiz\Question
+     */
+    public static function recovery($value)
+    {
+        return (new self($value['title']))
+            ->answers($value['answers'], count($value['answers']))
+            ->setCorrectAnswer($value['correctAnswer']);
+    }
+
+    protected function randomValues(array $arr, $count = 2): array
+    {
+        $result = [];
+        $arrKeys = array_rand($arr, $count);
+        if (is_array($arrKeys)) {
+            foreach ($arrKeys as $key) {
+                $result[] = $arr[$key];
+            }
+
+            return $result;
+        }
+
+        return $arr;
+    }
+}