<?php
namespace App\Controllers;

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;

class QuizController {
    protected $db;
    
    public function __construct($container) {
        $this->db = $container->get('db');
    }
    
    // Récupérer tous les quiz
    public function getQuizzes(Request $request, Response $response, $args) {
        $sql = "SELECT * FROM Quiz";
        try {
            $stmt = $this->db->query($sql);
            $quizzes = $stmt->fetchAll(\PDO::FETCH_OBJ);
            $payload = json_encode($quizzes);
        } catch (\PDOException $e) {
            $payload = json_encode(['error' => $e->getMessage()]);
        }
        $response->getBody()->write($payload);
        return $response->withHeader('Content-Type', 'application/json');
    }
    
    // Récupérer un quiz par son ID
    public function getQuiz(Request $request, Response $response, $args) {
        $id = $args['id'];
        $sql = "SELECT * FROM Quiz WHERE id_quiz = :id";
        try {
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam("id", $id);
            $stmt->execute();
            $quiz = $stmt->fetch(\PDO::FETCH_OBJ);
            if(!$quiz){
                $payload = json_encode(['message' => 'Quiz not found']);
                $response->getBody()->write($payload);
                return $response->withHeader('Content-Type', 'application/json')->withStatus(404);
            }
            $payload = json_encode($quiz);
        } catch (\PDOException $e) {
            $payload = json_encode(['error' => $e->getMessage()]);
        }
        $response->getBody()->write($payload);
        return $response->withHeader('Content-Type', 'application/json');
    }
    
    // Créer un nouveau quiz
    public function createQuiz(Request $request, Response $response, $args) {
        $data = $request->getParsedBody();
        $sql = "INSERT INTO Quiz (title, img, nb_quest) VALUES (:title, :img, :nb_quest)";
        try {
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam("title", $data['title']);
            $stmt->bindParam("img", $data['img']);
            $stmt->bindParam("nb_quest", $data['nb_quest']);
            $stmt->execute();
            $data['id_quiz'] = $this->db->lastInsertId();
            $payload = json_encode($data);
        } catch (\PDOException $e) {
            $payload = json_encode(['error' => $e->getMessage()]);
        }
        $response->getBody()->write($payload);
        return $response->withHeader('Content-Type', 'application/json');
    }
    
    // Supprimer un quiz
    public function deleteQuiz(Request $request, Response $response, $args) {
        $id = $args['id'];
        $sql = "DELETE FROM Quiz WHERE id_quiz = :id";
        try {
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam("id", $id);
            $stmt->execute();
            $payload = json_encode(['message' => 'Quiz deleted']);
        } catch (\PDOException $e) {
            $payload = json_encode(['error' => $e->getMessage()]);
        }
        $response->getBody()->write($payload);
        return $response->withHeader('Content-Type', 'application/json');
    }
}