<?php

public function getRequestUserName() {
		return $_POST[self::$name];
	}

	public function getRequestPassword() {
		return $_POST[self::$password];
	}

	public function getKeepLoggedIn() {
		if (isset($_POST[self::$keep])) {
			return true;
		}
		return false;
	}

	public function userFilledInUsername() {
		if (isset($_POST[self::$name]) && !empty($_POST[self::$name])) {
			return true;
		}
		else {
			return false;
		}
	}

	public function userFilledInPassword() {
		if (isset($_POST[self::$password]) && !empty($_POST[self::$password])) {
			return true;
		}
		else {
			return false;
		}
	}

	public function userWantsToLogIn() {
		if (isset($_POST[self::$login])) {
			return true;
		}
		else {
			return false;
		}
	}

	public function userPressedLogout() {
		if (isset($_POST[self::$logout])) {
			return true;
		}
		else {
			return false;
		}
	}

	private function getResponseMessage() {
		if ($this->userWantsToLogIn()) {
			$username = $this->getRequestUserName();
			$password = $this->getRequestPassword();

			if ($this->userFilledInPassword() === false && $this->userFilledInUsername()) {
				return 'Password is missing';
			}

			if ($this->userFilledInUsername() === false) {
				return 'Username is missing';
			}

			if ($this->model->usernameExists($username) === false || $this->model->checkUsernameAndPassword($username, $password) === false) {
				return 'Wrong name or password';
			}

			if ($this->model->usernameExists($username) && $this->model->checkUsernameAndPassword($username, $password)) {
				return 'Welcome';
			}
		}

		if ($this->session->isCookieSet()) {
			return 'Welcome back with cookie';
		}

		if ($this->userPressedLogout()) {
			return 'Bye bye!';
		}

		return '';
	}

	private function setCookie() {
		if ($this->getKeepLoggedIn()) {
			$this->session->setKeepLoggedIn();
		}
	}