<?php
class Login
{
    // Accepted commands
    const CommandLogin = "Login_login";
    const CommandLogout = "Login_logout";

    // Params
    const ParamRequestUsername = "Login_username";
    const ParamRequestPassword = "Login_password";

    public static function LoginUser($username, $password)
    {
        Log::Add('LoginUser', "Starting log in with $username and $password");

        // Check parameter validity
        if (!$username || !$password || strlen($username) == 0 || strlen($password) == 0)
        {
            return false;
        }

        $userManager = new UserManager();

        if ($userManager->Authenticate($username, $password, false))
        {
            $userManager = new UserManager();
            $fullName = $userManager->GetFullNameOfUser($_REQUEST[Login::ParamRequestUsername]);
            $password = $userManager->GetPasswordOfUser($_REQUEST[Login::ParamRequestUsername]);

            $_SESSION[SESSION_USERNAME] = $username;

            $cookieExpireTime = time() + 60 * 60 * 24;
            setcookie(COOKIE_USERNAME, $username, $cookieExpireTime);
            setcookie(COOKIE_PASSWORD, $password, $cookieExpireTime);

            //Log::Add('LoginUser', "Logged in with $username and $password");

            return true;
        }
        else
        {
            Log::Add('LoginUser', "Could not log in with $username and $password");

            return false;
        }
    }

    // Logs the user out
    public static function LogoutUser()
    {
        try
        {
            $username = $_SESSION[SESSION_USERNAME];
            unset($_SESSION[SESSION_USERNAME]);
            setcookie(COOKIE_USERNAME, "", time() - 3600);
            setcookie(COOKIE_PASSWORD, "", time() - 3600);
            unset($_COOKIE[COOKIE_USERNAME]);
            unset($_COOKIE[COOKIE_PASSWORD]);

            Log::Add('Login::LogoutUser',  "$username successfully logged out");
        }
        catch (Exception $e)
        {
            Log::Add('LOGOUTERROR',  $e->getMessage());
        }
    }
}
?>