<?php
require_once 'config/Database.php';
error_reporting(0);
if (isset($_POST['register'])) {

  $error = "";

  if (empty($_POST['username']) || empty($_POST['email'] || empty($_POST['password']) || empty($_POST['repeatpassword']))) {
    $error = 'please input username email password and repeat password';
  }
  elseif($_POST['password'] === $_POST['repeatpassword']){
    $error = 'please password and repeat password same';
  }


  try {
    $stmt = $conn->prepare('SELECT * FROM users WHERE username=:username');
    $query_params = [':username' => $_POST['username']];
    $stmt->execute($query_params);
  } catch (PDOException $e) {
    die('query failed'.$e->getMessage());
  }
  $row = $stmt->fetch(PDO::FETCH_ASSOC);
    if ($row) {
      $error = 'username has used';
    }

  if (!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL)) {
    $error = 'please use valid email';
  }
  try {
    $stmt = $conn->prepare('SELECT * FROM users WHERE email=:email');
    $query_params = [':email' => $_POST['email']];
    $stmt->execute($query_params);
  } catch (PDOException $e) {
    die('error query1'.$e->getMessage());
  }
  $row = $stmt->fetch(PDO::FETCH_ASSOC);
    if($row){
      $error ="email has used";
    }

  $password = hash('sha256',$_POST['password']);

  try {
    $stmt = $conn->prepare('INSERT INTO users (username, email , password) VALUES (:username, :email , :password)');
    $query_params = [
                    ':username' => $_POST['username'],
                    ':email' => $_POST['email'],
                    ':password' => $password
                    ];
    $stmt->execute($query_params);
  } catch (PDOException $e) {
    die('error query2'.$e->getMessage());
  }
    if($stmt){
      header('location: login.php');
    }else{
      return false;
    }






}



 ?>