<?php

/**
 * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

namespace Test\User;

use OC\Session\Memory;
use OC\User\User;

/**
 * @group DB
 * @package Test\User
 */
class Session extends \Test\TestCase {

	/** @var \OC\Authentication\Token\DefaultTokenProvider */
	protected $defaultProvider;

	protected function setUp() {
		parent::setUp();

		$this->defaultProvider = $this->getMockBuilder('\OC\Authentication\Token\DefaultTokenProvider')
			->disableOriginalConstructor()
			->getMock();
	}

	public function testGetUser() {
		$token = new \OC\Authentication\Token\DefaultToken();

		$expectedUser = new User('foo', null);
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->at(0))
			->method('get')
			->with('user_id')
			->will($this->returnValue($expectedUser->getUID()));

		$manager = $this->getMockBuilder('\OC\User\Manager')
			->disableOriginalConstructor()
			->getMock();
		$this->defaultProvider->expects($this->once())
			->method('getToken')
			->will($this->returnValue($token));
		// TODO: check passed session id once it's mockable
		$session->expects($this->at(1))
			->method('last_login_check')
			->will($this->returnValue(null)); // No check has been run yet
		$this->defaultProvider->expects($this->once())
			->method('getPassword')
			// TODO: check passed UID and session id once it's mockable
			->will($this->returnValue('password123'));
		$manager->expects($this->once())
			->method('checkPassword')
			->with($expectedUser->getUID(), 'password123')
			->will($this->returnValue(true));
		$session->expects($this->at(2))
			->method('set')
			->with('last_login_check', $this->equalTo(time(), 10));

		$session->expects($this->at(3))
			->method('get')
			->with('last_token_update')
			->will($this->returnValue(null)); // No check run so far
		$this->defaultProvider->expects($this->once())
			->method('updateToken')
			->with($token);
		$session->expects($this->at(4))
			->method('set')
			->with('last_token_update', $this->equalTo(time(), 10));

		$manager->expects($this->any())
			->method('get')
			->with($expectedUser->getUID())
			->will($this->returnValue($expectedUser));

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$user = $userSession->getUser();
		$this->assertSame($expectedUser, $user);
	}

	public function isLoggedInData() {
		return [
			[true],
			[false],
		];
	}

	/**
	 * @dataProvider isLoggedInData
	 */
	public function testIsLoggedIn($isLoggedIn) {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));

		$manager = $this->getMockBuilder('\OC\User\Manager')
			->disableOriginalConstructor()
			->getMock();

		$userSession = $this->getMockBuilder('\OC\User\Session')
			->setConstructorArgs([$manager, $session, $this->defaultProvider, [$this->defaultProvider]])
			->setMethods([
				'getUser'
			])
			->getMock();
		$user = new User('sepp', null);
		$userSession->expects($this->once())
			->method('getUser')
			->will($this->returnValue($isLoggedIn ? $user : null));
		$this->assertEquals($isLoggedIn, $userSession->isLoggedIn());
	}

	public function testSetUser() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->once())
			->method('set')
			->with('user_id', 'foo');

		$manager = $this->getMock('\OC\User\Manager');

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));
		$user->expects($this->once())
			->method('getUID')
			->will($this->returnValue('foo'));

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$userSession->setUser($user);
	}

	public function testLoginValidPasswordEnabled() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->once())
			->method('regenerateId');
		$session->expects($this->exactly(2))
			->method('set')
			->with($this->callback(function ($key) {
					switch ($key) {
						case 'user_id':
						case 'loginname':
							return true;
							break;
						default:
							return false;
							break;
					}
				}, 'foo'));

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));
		$user->expects($this->once())
			->method('isEnabled')
			->will($this->returnValue(true));
		$user->expects($this->any())
			->method('getUID')
			->will($this->returnValue('foo'));
		$user->expects($this->once())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('checkPassword')
			->with('foo', 'bar')
			->will($this->returnValue($user));

		$userSession = $this->getMockBuilder('\OC\User\Session')
			->setConstructorArgs([$manager, $session, $this->defaultProvider, [$this->defaultProvider]])
			->setMethods([
				'prepareUserLogin'
			])
			->getMock();
		$userSession->expects($this->once())
			->method('prepareUserLogin');
		$userSession->login('foo', 'bar');
		$this->assertEquals($user, $userSession->getUser());
	}

	public function testLoginValidPasswordDisabled() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->never())
			->method('set');
		$session->expects($this->once())
			->method('regenerateId');

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));
		$user->expects($this->once())
			->method('isEnabled')
			->will($this->returnValue(false));
		$user->expects($this->never())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('checkPassword')
			->with('foo', 'bar')
			->will($this->returnValue($user));

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$userSession->login('foo', 'bar');
	}

	public function testLoginInvalidPassword() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->never())
			->method('set');
		$session->expects($this->once())
			->method('regenerateId');

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));
		$user->expects($this->never())
			->method('isEnabled');
		$user->expects($this->never())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('checkPassword')
			->with('foo', 'bar')
			->will($this->returnValue(false));

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$userSession->login('foo', 'bar');
	}

	public function testLoginNonExisting() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->never())
			->method('set');
		$session->expects($this->once())
			->method('regenerateId');

		$manager = $this->getMock('\OC\User\Manager');

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$manager->expects($this->once())
			->method('checkPassword')
			->with('foo', 'bar')
			->will($this->returnValue(false));

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$userSession->login('foo', 'bar');
	}

	public function testRememberLoginValidToken() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->exactly(1))
			->method('set')
			->with($this->callback(function ($key) {
					switch ($key) {
						case 'user_id':
							return true;
						default:
							return false;
					}
				}, 'foo'));
		$session->expects($this->once())
			->method('regenerateId');

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));

		$user->expects($this->any())
			->method('getUID')
			->will($this->returnValue('foo'));
		$user->expects($this->once())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('get')
			->with('foo')
			->will($this->returnValue($user));

		//prepare login token
		$token = 'goodToken';
		\OC::$server->getConfig()->setUserValue('foo', 'login_token', $token, time());

		$userSession = $this->getMock(
			'\OC\User\Session',
			//override, otherwise tests will fail because of setcookie()
			array('setMagicInCookie'),
			//there  are passed as parameters to the constructor
			array($manager, $session, $this->defaultProvider, [$this->defaultProvider]));

		$granted = $userSession->loginWithCookie('foo', $token);

		$this->assertSame($granted, true);
	}

	public function testRememberLoginInvalidToken() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->never())
			->method('set');
		$session->expects($this->once())
			->method('regenerateId');

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));

		$user->expects($this->any())
			->method('getUID')
			->will($this->returnValue('foo'));
		$user->expects($this->never())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('get')
			->with('foo')
			->will($this->returnValue($user));

		//prepare login token
		$token = 'goodToken';
		\OC::$server->getConfig()->setUserValue('foo', 'login_token', $token, time());

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$granted = $userSession->loginWithCookie('foo', 'badToken');

		$this->assertSame($granted, false);
	}

	public function testRememberLoginInvalidUser() {
		$session = $this->getMock('\OC\Session\Memory', array(), array(''));
		$session->expects($this->never())
			->method('set');
		$session->expects($this->once())
			->method('regenerateId');

		$managerMethods = get_class_methods('\OC\User\Manager');
		//keep following methods intact in order to ensure hooks are
		//working
		$doNotMock = array('__construct', 'emit', 'listen');
		foreach ($doNotMock as $methodName) {
			$i = array_search($methodName, $managerMethods, true);
			if ($i !== false) {
				unset($managerMethods[$i]);
			}
		}
		$manager = $this->getMock('\OC\User\Manager', $managerMethods, array());

		$backend = $this->getMock('\Test\Util\User\Dummy');

		$user = $this->getMock('\OC\User\User', array(), array('foo', $backend));

		$user->expects($this->never())
			->method('getUID');
		$user->expects($this->never())
			->method('updateLastLoginTimestamp');

		$manager->expects($this->once())
			->method('get')
			->with('foo')
			->will($this->returnValue(null));

		//prepare login token
		$token = 'goodToken';
		\OC::$server->getConfig()->setUserValue('foo', 'login_token', $token, time());

		$userSession = new \OC\User\Session($manager, $session, $this->defaultProvider, [$this->defaultProvider]);
		$granted = $userSession->loginWithCookie('foo', $token);

		$this->assertSame($granted, false);
	}

	public function testActiveUserAfterSetSession() {
		$users = array(
			'foo' => new User('foo', null),
			'bar' => new User('bar', null)
		);

		$manager = $this->getMockBuilder('\OC\User\Manager')
			->disableOriginalConstructor()
			->getMock();

		$manager->expects($this->any())
			->method('get')
			->will($this->returnCallback(function ($uid) use ($users) {
					return $users[$uid];
				}));

		$session = new Memory('');
		$session->set('user_id', 'foo');
		$userSession = $this->getMockBuilder('\OC\User\Session')
			->setConstructorArgs([$manager, $session, $this->defaultProvider, [$this->defaultProvider]])
			->setMethods([
				'validateSession'
			])
			->getMock();
		$userSession->expects($this->any())
			->method('validateSession');

		$this->assertEquals($users['foo'], $userSession->getUser());

		$session2 = new Memory('');
		$session2->set('user_id', 'bar');
		$userSession->setSession($session2);
		$this->assertEquals($users['bar'], $userSession->getUser());
	}

}