<?php
session_start();

// variable declaration
$username = "";
$email    = "";
$errors = array();
$_SESSION['success'] = "";

include 'dbCon.php';

// register
if (isset($_POST['reg_user'])) {
    // receive all input values from the form
    $username = mysqli_real_escape_string($db, $_POST['username']);
    $email = mysqli_real_escape_string($db, $_POST['email']);
    $password_1 = mysqli_real_escape_string($db, $_POST['password_1']);
    $password_2 = mysqli_real_escape_string($db, $_POST['password_2']);

    // form validation: ensure that the form is correctly filled
    if (empty($username)) { array_push($errors, "Username is required"); }
    if (empty($email)) { array_push($errors, "Email is required"); }
    if (empty($password_1)) { array_push($errors, "Password is required"); }

    if ($password_1 != $password_2) {
        array_push($errors, "The two passwords do not match");
    }

    // register user if there are no errors in the form
    if (count($errors) == 0) {
        $password = md5($password_1);//encrypt the password before saving in the database
        $query = "INSERT INTO users (username, email, password,freeSpace)
                  VALUES('$username', '$email', '$password',1024)";
        mysqli_query($db, $query);

        $_SESSION['username'] = $username;
        $_SESSION['success'] = "You are now logged in";
        $_SESSION['userLevel'] = "u";
        $_SESSION['freeSpace'] = "1024";

        //create a space for user in server
        $dirBaseName = $_SESSION['username'];
        $path = "uploads/".$dirBaseName;
        if (!mkdir($path, 0777, true)) {
            die('Failed to create folders...');
        }

        header('location: index.php');

    }

}


// login

if (isset($_POST['login_user'])) {
    $username = mysqli_real_escape_string($db, $_POST['username']);
    $password = mysqli_real_escape_string($db, $_POST['password']);

    if (empty($username)) {
        array_push($errors, "Username is required");
    }
    if (empty($password)) {
        array_push($errors, "Password is required");
    }

    if (count($errors) == 0) {
        $password = md5($password);
        $query = "SELECT * FROM users WHERE username='$username' AND password='$password'";
        $results = mysqli_query($db, $query);

        if (mysqli_num_rows($results) == 1) {
            $_SESSION['username'] = $username;
            $_SESSION['success'] = "You are now logged in";
            $followingdata = $results->fetch_array(MYSQLI_ASSOC);
            $_SESSION['userLevel'] = $followingdata['userLevel'];
            $_SESSION['freeSpace'] = $followingdata['freeSpace'];
            header('location: index.php');
        }else {
            array_push($errors, "Wrong username/password combination");
        }
    }
}



?>