<?php
/**
 * @copyright Copyright (c) 2017 Arthur Schiwon <blizzz@arthur-schiwon.de>
 *
 * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

namespace Test\Collaboration\Collaborators;

use OC\Collaboration\Collaborators\SearchResult;
use OC\Collaboration\Collaborators\UserPlugin;
use OCP\Collaboration\Collaborators\ISearchResult;
use OCP\IConfig;
use OCP\IGroupManager;
use OCP\IUser;
use OCP\IUserManager;
use OCP\IUserSession;
use OCP\Share;
use Test\TestCase;

class UserPluginTest extends TestCase {
	/** @var  IConfig|\PHPUnit_Framework_MockObject_MockObject */
	protected $config;

	/** @var  IUserManager|\PHPUnit_Framework_MockObject_MockObject */
	protected $userManager;

	/** @var  IGroupManager|\PHPUnit_Framework_MockObject_MockObject */
	protected $groupManager;

	/** @var  IUserSession|\PHPUnit_Framework_MockObject_MockObject */
	protected $session;

	/** @var  UserPlugin */
	protected $plugin;

	/** @var  ISearchResult */
	protected $searchResult;

	/** @var int */
	protected $limit = 2;

	/** @var int */
	protected $offset = 0;

	/** @var  IUser|\PHPUnit_Framework_MockObject_MockObject */
	protected $user;

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

		$this->config = $this->createMock(IConfig::class);

		$this->userManager = $this->createMock(IUserManager::class);

		$this->groupManager = $this->createMock(IGroupManager::class);

		$this->session = $this->createMock(IUserSession::class);

		$this->searchResult = new SearchResult();

		$this->user = $this->getUserMock('admin', 'Administrator');
	}

	public function instantiatePlugin() {
		// cannot be done within setUp, because dependent mocks needs to be set
		// up with configuration etc. first
		$this->plugin = new UserPlugin(
			$this->config,
			$this->userManager,
			$this->groupManager,
			$this->session
		);
	}

	public function getUserMock($uid, $displayName, $enabled = true) {
		$user = $this->createMock(IUser::class);

		$user->expects($this->any())
			->method('getUID')
			->willReturn($uid);

		$user->expects($this->any())
			->method('getDisplayName')
			->willReturn($displayName);

		$user->expects($this->any())
			->method('isEnabled')
			->willReturn($enabled);

		return $user;
	}

	public function dataGetUsers() {
		return [
			['test', false, true, [], [], [], [], true, false],
			['test', false, false, [], [], [], [], true, false],
			['test', true, true, [], [], [], [], true, false],
			['test', true, false, [], [], [], [], true, false],
			[
				'test', false, true, [], [],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test', false, false, [], [],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test', true, true, [], [],
				[], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test', true, false, [], [],
				[], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test', true, true, ['test-group'], [['test-group', 'test', 2, 0, []]],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test', true, false, ['test-group'], [['test-group', 'test', 2, 0, []]],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				], [], true, $this->getUserMock('test', 'Test')
			],
			[
				'test',
				false,
				true,
				[],
				[
					$this->getUserMock('test1', 'Test One'),
				],
				[],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test1']],
				],
				true,
				false,
			],
			[
				'test',
				false,
				false,
				[],
				[
					$this->getUserMock('test1', 'Test One'),
				],
				[],
				[],
				true,
				false,
			],
			[
				'test',
				false,
				true,
				[],
				[
					$this->getUserMock('test1', 'Test One'),
					$this->getUserMock('test2', 'Test Two'),
				],
				[],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test1']],
					['label' => 'Test Two', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test2']],
				],
				false,
				false,
			],
			[
				'test',
				false,
				false,
				[],
				[
					$this->getUserMock('test1', 'Test One'),
					$this->getUserMock('test2', 'Test Two'),
				],
				[],
				[],
				true,
				false,
			],
			[
				'test',
				false,
				true,
				[],
				[
					$this->getUserMock('test0', 'Test'),
					$this->getUserMock('test1', 'Test One'),
					$this->getUserMock('test2', 'Test Two'),
				],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test0']],
				],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test1']],
					['label' => 'Test Two', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test2']],
				],
				false,
				false,
			],
			[
				'test',
				false,
				false,
				[],
				[
					$this->getUserMock('test0', 'Test'),
					$this->getUserMock('test1', 'Test One'),
					$this->getUserMock('test2', 'Test Two'),
				],
				[
					['label' => 'Test', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test0']],
				],
				[],
				true,
				false,
			],
			[
				'test',
				true,
				true,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, ['test1' => 'Test One']],
					['xyz', 'test', 2, 0, []],
				],
				[],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test1']],
				],
				true,
				false,
			],
			[
				'test',
				true,
				false,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, ['test1' => 'Test One']],
					['xyz', 'test', 2, 0, []],
				],
				[],
				[],
				true,
				false,
			],
			[
				'test',
				true,
				true,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, [
						'test1' => 'Test One',
						'test2' => 'Test Two',
					]],
					['xyz', 'test', 2, 0, [
						'test1' => 'Test One',
						'test2' => 'Test Two',
					]],
				],
				[],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test1']],
					['label' => 'Test Two', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test2']],
				],
				false,
				false,
			],
			[
				'test',
				true,
				false,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, [
						'test1' => 'Test One',
						'test2' => 'Test Two',
					]],
					['xyz', 'test', 2, 0, [
						'test1' => 'Test One',
						'test2' => 'Test Two',
					]],
				],
				[],
				[],
				true,
				false,
			],
			[
				'test',
				true,
				true,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, [
						'test' => 'Test One',
					]],
					['xyz', 'test', 2, 0, [
						'test2' => 'Test Two',
					]],
				],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				],
				[
					['label' => 'Test Two', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test2']],
				],
				false,
				false,
			],
			[
				'test',
				true,
				false,
				['abc', 'xyz'],
				[
					['abc', 'test', 2, 0, [
						'test' => 'Test One',
					]],
					['xyz', 'test', 2, 0, [
						'test2' => 'Test Two',
					]],
				],
				[
					['label' => 'Test One', 'value' => ['shareType' => Share::SHARE_TYPE_USER, 'shareWith' => 'test']],
				],
				[],
				true,
				false,
			],
		];
	}

	/**
	 * @dataProvider dataGetUsers
	 *
	 * @param string $searchTerm
	 * @param bool $shareWithGroupOnly
	 * @param bool $shareeEnumeration
	 * @param array $groupResponse
	 * @param array $userResponse
	 * @param array $exactExpected
	 * @param array $expected
	 * @param bool $reachedEnd
	 * @param bool|IUser $singleUser
	 */
	public function testSearch(
		$searchTerm,
		$shareWithGroupOnly,
		$shareeEnumeration,
		array $groupResponse,
		array $userResponse,
		array $exactExpected,
		array $expected,
		$reachedEnd,
		$singleUser
	) {
		$this->config->expects($this->any())
			->method('getAppValue')
			->willReturnCallback(
				function($appName, $key, $default)
				use ($shareWithGroupOnly, $shareeEnumeration)
				{
					if ($appName === 'core' && $key === 'shareapi_only_share_with_group_members') {
						return $shareWithGroupOnly ? 'yes' : 'no';
					} else if ($appName === 'core' && $key === 'shareapi_allow_share_dialog_user_enumeration') {
						return $shareeEnumeration ? 'yes' : 'no';
					}
					return $default;
				}
			);

		$this->instantiatePlugin();

		$this->session->expects($this->any())
			->method('getUser')
			->willReturn($this->user);

		if(!$shareWithGroupOnly) {
			$this->userManager->expects($this->once())
				->method('searchDisplayName')
				->with($searchTerm, $this->limit, $this->offset)
				->willReturn($userResponse);
		} else {
			if ($singleUser !== false) {
				$this->groupManager->expects($this->exactly(2))
					->method('getUserGroupIds')
					->withConsecutive(
						$this->user,
						$singleUser
					)
					->willReturn($groupResponse);
			} else {
				$this->groupManager->expects($this->once())
					->method('getUserGroupIds')
					->with($this->user)
					->willReturn($groupResponse);
			}

			$this->groupManager->expects($this->exactly(sizeof($groupResponse)))
				->method('displayNamesInGroup')
				->with($this->anything(), $searchTerm, $this->limit, $this->offset)
				->willReturnMap($userResponse);
		}

		if ($singleUser !== false) {
			$this->userManager->expects($this->once())
				->method('get')
				->with($searchTerm)
				->willReturn($singleUser);
		}


		$moreResults = $this->plugin->search($searchTerm, $this->limit, $this->offset, $this->searchResult);
		$result = $this->searchResult->asArray();

		$this->assertEquals($exactExpected, $result['exact']['users']);
		$this->assertEquals($expected, $result['users']);
		$this->assertSame($reachedEnd, $moreResults);
	}

	public function takeOutCurrentUserProvider() {
		$inputUsers = [
			'alice' => 'Alice',
			'bob' => 'Bob',
			'carol' => 'Carol'
		];
		return [
			[
				$inputUsers,
				['alice', 'carol'],
				'bob'
			],
			[
				$inputUsers,
				['alice', 'bob', 'carol'],
				'dave'
			],
			[
				$inputUsers,
				['alice', 'bob', 'carol'],
				null
			]
		];
	}

	/**
	 * @dataProvider takeOutCurrentUserProvider
	 * @param array $users
	 * @param array $expectedUIDs
	 * @param $currentUserId
	 */
	public function testTakeOutCurrentUser(array $users, array $expectedUIDs, $currentUserId) {
		$this->instantiatePlugin();

		$this->session->expects($this->once())
			->method('getUser')
			->willReturnCallback(function() use ($currentUserId) {
				if($currentUserId !== null) {
					return $this->getUserMock($currentUserId, $currentUserId);
				}
				return null;
			});

		$this->plugin->takeOutCurrentUser($users);
		$this->assertSame($expectedUIDs, array_keys($users));
	}
}