<?php 
    //from : https://api.wordpress.org/secret-key/1.1/salt
    define('AUTH_KEY',         '2(QMu)jt|2!(9t]V!4SB/y,+T]LcvGZ8-sV@vS6RUgR!_]&S}{6/RZjAmLeW28On');

    //header('Content-type: text/plain;charset=utf-8');
    header('Content-type: application/json;charset=utf-8');
    $vars=array();
    foreach(array('REQUEST_METHOD',
    'REDIRECT_URL',
    'QUERY_STRING',
    'REQUEST_URI',
    'REQUEST_TIME_FLOAT',
    'REQUEST_TIME') as $key)
    {
      if(isset($_SERVER[$key]))
      {
        $vars[$key] = $_SERVER[$key];
      }
      else
      {
        $vars[$key] = "";
      }
    }
    //echo json_encode($vars);
    $query = preg_replace("/^\/api/","",$vars['REDIRECT_URL']);
    //echo $query;

    switch($query) 
    {
      case "/toto/" :
      case "/test/" :
        header('HTTP/1.1 200 OK');
        echo json_encode( (object) array('status'=>'active') );
      break;

      case "/key/" :
      case "/key" :
        if($vars['REQUEST_METHOD'] == "POST") 
        {
          if(!empty($_POST['user']) && !empty($_POST['password']))
          {
            $user = $_POST['user'];
            $password = md5($_POST['password'].AUTH_KEY);
            $response = array('user'=>$user,'md5'=>$password);

            //essayer de se connecter à ùysql (nb sur un xampp/wammp souvent l'utilisateur  root avec mot de passe vide)
            //https://www.tutorialspoint.com/mysqli/mysqli_connection.htm
            // na pas oublier de convertir les → en ->
            $dbhost = 'localhost';
            $dbuser = 'root';
            $dbpass = '';
            $dbname = 'apib3';
            //si je préfixe avec @je n'aurais pas le message d'erreur.
            @ $mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
            
            if($mysqli->connect_errno ) {
               header('HTTP/1.1 500 Internal Server Error');
               echo json_encode( (object) array('error'=>"Connect failed: ".$mysqli->connect_error ));
               exit();
            }
            else {
              $response['connection'] = 'successful';
              // vérifier si l'utilisateur existe 
              $sql = "SELECT * FROM `user` WHERE `user` LIKE '".$user."' AND `password` ='".$password."'";
              $result = $mysqli->query($sql);
              if ($result->num_rows > 0) {
                //
              }
              else {
                $sql ="INSERT INTO `user` VALUES (NULL,'".$user."','".$password."')";
                $result = $mysqli->query($sql);
                if($mysqli->connect_errno ) {
                  header('HTTP/1.1 500 Internal Server Error');
                  echo json_encode( (object) array('error'=>"Insert failed: ".$mysqli->connect_error ));
                  exit();
                }
                else {
                  $response['insert'] = 'successful';
                }
              }
            }
            $mysqli->close();
            header('HTTP/1.1 200 OK');
            echo json_encode( (object) $response );
          }
          else 
          {
            
            echo json_encode( (object) array('error'=>'PLease provide a valid user and matching password') );
          }
        }
        else 
        {
          header('HTTP/1.1 405 Method Not Allowed');
          echo json_encode( (object) array('error'=>'/key/ requires POST method') );
        }
      break;

      default :
       // header('HTTP/1.1 404 Not Found');
        header('HTTP/1.1 501 Not Implemented');
        echo json_encode( (object) array('error'=>'This path has not been implemented') );
      break;
    }