namespace App\Http\Controllers\Api;

use App\Models\Quiz;
use App\Models\Question;
use App\Models\Answer;
use App\Models\Option;
use App\Models\Test;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

class QuizController extends Controller
{
    public function getQuestions(Quiz $quiz)
    {
        $questions = Question::whereHas('quizzes', function ($query) use ($quiz) {
            $query->where('id', $quiz->id);
        })
        ->with('options')
        ->inRandomOrder()
        ->get();

        return response()->json($questions);
    }

    public function submitQuiz(Request $request, Quiz $quiz)
    {
        $test = Test::create([
            'user_id' => auth()->id(),
            'quiz_id' => $quiz->id,
            'result' => 0,
            'ip_address' => $request->ip(),
            'time_spent' => $request->input('time_spent')
        ]);

        $result = 0;

        foreach ($request->input('answers') as $answer) {
            $optionId = $answer['option_id'];
            $questionId = $answer['question_id'];
            
            $correct = Option::find($optionId)->correct ?? false;

            if ($correct) {
                $result++;
                Answer::create([
                    'user_id' => auth()->id(),
                    'test_id' => $test->id,
                    'question_id' => $questionId,
                    'option_id' => $optionId,
                    'correct' => 1
                ]);
            } else {
                Answer::create([
                    'user_id' => auth()->id(),
                    'test_id' => $test->id,
                    'question_id' => $questionId,
                    'option_id' => $optionId,
                    'correct' => 0
                ]);
            }
        }

        $test->update(['result' => $result]);

        return response()->json(['result' => $result, 'test_id' => $test->id]);
    }