daktylos/libs/LoginAction.class.php

<?php
class LoginAction implements IAction {
	public function execute() {
		$username = isset($_POST['username']) ? $_POST['username'] : "";
		$password = isset($_POST['password']) ? $_POST['password'] : "";
		
		if(!isset($username) || !isset($password) || empty($username) || empty($password))
		{
			return array("error" => "Username or password is required.");
		}
		$authData = $this->domainLogin($username, $password);
		if($authData) {
			return $authData;
		}

		return array("error" => "Username or password is invalid.");
	}

	private function domainLogin($username, $password) {
		return (new Authorize())->login($username, $password);
	}
}