array(2) { ["errorDetailCode"]=> int(-44) ["errorDetailMessage"]=> string(37) "username or password not found" }

array(2) { ["errorDetailCode"]=> int(-2) ["errorDetailMessage"]=> string(23) "username not found" }

array(2) { ["errorDetailCode"]=> int(-1) ["errorDetailMessage"]=> string(19) "password not found" }

$km_username = filter_var($_POST['userName'], FILTER_SANITIZE_STRING);
$km_user_password = $_POST['userPassword'];

// Validate form fields if they are empty
if(empty($km_username) && empty($km_user_password)) {

        // Error message if email and password fields are empty
        $_SESSION['km_error_message'] = 'Insert username and password!';
        header('Location: '.KM_BASE_URL.'/login.php');
        exit();

}else if(empty($km_username)) {

        // Error message if username field is empty
        $_SESSION['km_error_message'] = 'Insert username!';
        header('Location: '.KM_BASE_URL.'/login.php');
        exit();

}else if(empty($km_user_password)) {

        // Error message if password field is empty
        $_SESSION['km_error_message'] = 'Insert password!';
        header('Location: '.KM_BASE_URL.'/login.php');
        exit();

}

// Store form fields into an array
$fields = array(
    'userid' => $km_username,
    'password' => $km_user_password
);

// cURL request to API
$cURL = curl_init();
curl_setopt($cURL, CURLOPT_URL, URL_LOGIN_API);
curl_setopt($cURL, CURLOPT_POST, 1);
curl_setopt($cURL, CURLOPT_POSTFIELDS, http_build_query($fields));
curl_setopt($cURL, CURLOPT_HEADER, 0);
curl_setopt($cURL, CURLOPT_RETURNTRANSFER, TRUE);

$cURL_response = curl_exec($cURL); // execute the curl command

    if (curl_error($cURL)) {
        echo curl_error($cURL);
    }

curl_close ($cURL);

$json_response = json_decode($cURL_response, true);


// Form validation after cURL request

if(isset($json_response['errorDetailCode'])){

    // Error message if cURL request error
    $_SESSION['km_error_message'] = $json_response['errorDetailMessage'];
    header('Location: '.KM_BASE_URL.'/login.php');
    exit();

}else{

    // Store the cookie file name into the session
    if (!isset($_SESSION['cookiefile'])) {
        $cookiefile = tempnam(".", "cookie");
        $_SESSION['cookiefile'] = basename($cookiefile);
        file_put_contents($cookiefile, "");
    }

    // cURL request to API
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, URL_LOGIN_API);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($fields));
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiefile); // Cookie aware
    curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiefile); // Cookie aware
    $content = curl_exec($ch);
    curl_close($ch);

    // Redirerct user to dashboard
    header('Location: '.KM_BASE_URL.'/client-dashboard.php');
    exit();

}