<?php
declare(strict_types=1);
/**
 * @copyright Copyright (c) 2019, Thomas Citharel
 *
 * @author Thomas Citharel <tcit@tcit.fr>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCA\DAV\Tests\unit\CalDAV\Reminder;

use OCA\DAV\CalDAV\CalDavBackend;
use OCA\DAV\CalDAV\Reminder\AbstractNotificationProvider;
use OCA\DAV\CalDAV\Reminder\Backend;
use OCA\DAV\CalDAV\Reminder\INotificationProvider;
use OCA\DAV\CalDAV\Reminder\NotificationProvider\EmailProvider;
use OCA\DAV\CalDAV\Reminder\NotificationProvider\PushProvider;
use OCA\DAV\CalDAV\Reminder\NotificationProviderManager;
use OCA\DAV\CalDAV\Reminder\ReminderService;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\IGroup;
use OCP\IGroupManager;
use OCP\IUser;
use OCP\IUserManager;
use OCP\IUserSession;
use Test\TestCase;

class ReminderServiceTest extends TestCase {

    /** @var Backend|\PHPUnit\Framework\MockObject\MockObject */
    private $backend;

    /** @var NotificationProviderManager|\PHPUnit\Framework\MockObject\MockObject */
    private $notificationProviderManager;

	/** @var IUserManager|\PHPUnit\Framework\MockObject\MockObject */
	private $userManager;

	/** @var IGroupManager|\PHPUnit\Framework\MockObject\MockObject*/
	private $groupManager;

	/** @var IUserSession|\PHPUnit\Framework\MockObject\MockObject */
	private $userSession;

	/** @var CalDavBackend|\PHPUnit\Framework\MockObject\MockObject */
	private $caldavBackend;

	/** @var ITimeFactory|\PHPUnit\Framework\MockObject\MockObject  */
	private $timeFactory;

	/** @var ReminderService */
	private $reminderService;

	public const CALENDAR_DATA = <<<EOD
BEGIN:VCALENDAR
PRODID:-//Nextcloud calendar v1.6.4
BEGIN:VEVENT
CREATED:20160602T133732
DTSTAMP:20160602T133732
LAST-MODIFIED:20160602T133732
UID:wej2z68l9h
SUMMARY:Test Event
LOCATION:Somewhere ...
DESCRIPTION:maybe ....
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20160609
DTEND;TZID=Europe/Berlin;VALUE=DATE:20160610
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-PT15M
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER;VALUE=DATE-TIME:20160608T000000Z
END:VALARM
END:VEVENT
END:VCALENDAR
EOD;

	public const CALENDAR_DATA_REPEAT = <<<EOD
BEGIN:VCALENDAR
PRODID:-//Nextcloud calendar v1.6.4
BEGIN:VEVENT
CREATED:20160602T133732
DTSTAMP:20160602T133732
LAST-MODIFIED:20160602T133732
UID:wej2z68l9h
SUMMARY:Test Event
LOCATION:Somewhere ...
DESCRIPTION:maybe ....
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20160609
DTEND;TZID=Europe/Berlin;VALUE=DATE:20160610
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-PT15M
REPEAT:4
DURATION:PT2M
END:VALARM
END:VEVENT
END:VCALENDAR
EOD;

	public const CALENDAR_DATA_RECURRING = <<<EOD
BEGIN:VCALENDAR
PRODID:-//Nextcloud calendar v1.6.4
BEGIN:VEVENT
CREATED:20160602T133732
DTSTAMP:20160602T133732
LAST-MODIFIED:20160602T133732
UID:wej2z68l9h
SUMMARY:Test Event
LOCATION:Somewhere ...
DESCRIPTION:maybe ....
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20160609
DTEND;TZID=Europe/Berlin;VALUE=DATE:20160610
RRULE:FREQ=WEEKLY
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-PT15M
END:VALARM
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-P8D
END:VALARM
END:VEVENT
END:VCALENDAR
EOD;

	public const CALENDAR_DATA_RECURRING_REPEAT = <<<EOD
BEGIN:VCALENDAR
PRODID:-//Nextcloud calendar v1.6.4
BEGIN:VEVENT
CREATED:20160602T133732
DTSTAMP:20160602T133732
LAST-MODIFIED:20160602T133732
UID:wej2z68l9h
SUMMARY:Test Event
LOCATION:Somewhere ...
DESCRIPTION:maybe ....
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20160609
DTEND;TZID=Europe/Berlin;VALUE=DATE:20160610
RRULE:FREQ=WEEKLY
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-PT15M
REPEAT:4
DURATION:PT2M
END:VALARM
BEGIN:VALARM
ACTION:EMAIL
TRIGGER:-P8D
END:VALARM
END:VEVENT
END:VCALENDAR
EOD;

	public const CALENDAR_DATA_NO_ALARM = <<<EOD
BEGIN:VCALENDAR
PRODID:-//Nextcloud calendar v1.6.4
BEGIN:VEVENT
CREATED:20160602T133732
DTSTAMP:20160602T133732
LAST-MODIFIED:20160602T133732
UID:wej2z68l9h
SUMMARY:Test Event
LOCATION:Somewhere ...
DESCRIPTION:maybe ....
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20160609
DTEND;TZID=Europe/Berlin;VALUE=DATE:20160610
END:VEVENT
END:VCALENDAR
EOD;

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

        $this->backend = $this->createMock(Backend::class);
        $this->notificationProviderManager = $this->createMock(NotificationProviderManager::class);
        $this->userManager = $this->createMock(IUserManager::class);
		$this->groupManager = $this->createMock(IGroupManager::class);
		$this->caldavBackend = $this->createMock(CalDavBackend::class);
		$this->timeFactory = $this->createMock(ITimeFactory::class);

		$this->caldavBackend->method('getShares')->willReturn([]);

		$this->reminderService = new ReminderService($this->backend,
			$this->notificationProviderManager,
			$this->userManager,
			$this->groupManager,
			$this->caldavBackend,
			$this->timeFactory);
    }

	public function testOnCalendarObjectDelete():void {
    	$this->backend->expects($this->once())
			->method('cleanRemindersForEvent')
			->with(44);

    	$action = '\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject';
		$objectData = [
			'id' => '44',
			'component' => 'vevent',
		];

		$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testOnCalendarObjectCreateSingleEntry():void {
		$action = '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject';
    	$objectData = [
    		'calendardata' => self::CALENDAR_DATA,
			'id' => '42',
			'calendarid' => '1337',
			'component' => 'vevent',
		];

    	$this->backend->expects($this->exactly(2))
			->method('insertReminder')
			->withConsecutive(
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'de919af7429d3b5c11e8b9d289b411a6', 'EMAIL', true, 1465429500, false],
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', '35b3eae8e792aa2209f0b4e1a302f105', 'DISPLAY', false, 1465344000, false]
			)
			->willReturn(1);

    	$this->timeFactory->expects($this->once())
			->method('getDateTime')
			->with()
			->willReturn(\DateTime::createFromFormat(\DateTime::ATOM, '2016-06-08T00:00:00+00:00'));

    	$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testOnCalendarObjectCreateSingleEntryWithRepeat(): void {
		$action = '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject';
		$objectData = [
			'calendardata' => self::CALENDAR_DATA_REPEAT,
			'id' => '42',
			'calendarid' => '1337',
			'component' => 'vevent',
		];

		$this->backend->expects($this->exactly(5))
			->method('insertReminder')
			->withConsecutive(
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1465429500, false],
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1465429620, true],
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1465429740, true],
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1465429860, true],
				[1337, 42, 'wej2z68l9h', false, 1465430400, false, '5c70531aab15c92b52518ae10a2f78a4', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1465429980, true]
			)
			->willReturn(1);

		$this->timeFactory->expects($this->once())
			->method('getDateTime')
			->with()
			->willReturn(\DateTime::createFromFormat(\DateTime::ATOM, '2016-06-08T00:00:00+00:00'));

		$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testOnCalendarObjectCreateRecurringEntry(): void {
		$action = '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject';
		$objectData = [
			'calendardata' => self::CALENDAR_DATA_RECURRING,
			'id' => '42',
			'calendarid' => '1337',
			'component' => 'vevent',
		];

		$this->backend->expects($this->exactly(2))
			->method('insertReminder')
			->withConsecutive(
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'de919af7429d3b5c11e8b9d289b411a6', 'EMAIL', true, 1467243900, false],
				[1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', '8996992118817f9f311ac5cc56d1cc97', 'EMAIL', true, 1467158400, false]
			)
			->willReturn(1);

		$this->timeFactory->expects($this->once())
			->method('getDateTime')
			->with()
			->willReturn(\DateTime::createFromFormat(\DateTime::ATOM, '2016-06-29T00:00:00+00:00'));

		$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testOnCalendarObjectCreateEmpty():void {
		$action = '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject';
		$objectData = [
			'calendardata' => self::CALENDAR_DATA_NO_ALARM,
			'id' => '42',
			'calendarid' => '1337',
			'component' => 'vevent',
		];

		$this->backend->expects($this->never())
			->method('insertReminder');

		$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testOnCalendarObjectCreateRecurringEntryWithRepeat():void {
		$action = '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject';
		$objectData = [
			'calendardata' => self::CALENDAR_DATA_RECURRING_REPEAT,
			'id' => '42',
			'calendarid' => '1337',
			'component' => 'vevent',
		];

		$this->backend->expects($this->exactly(6))
			->method('insertReminder')
			->withConsecutive(
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467243900, false],
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467244020, true],
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467244140, true],
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467244260, true],
				[1337, 42, 'wej2z68l9h', true, 1467244800, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467244380, true],
				[1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', '8996992118817f9f311ac5cc56d1cc97', 'EMAIL', true, 1467158400, false]
			)
			->willReturn(1);

		$this->timeFactory->expects($this->once())
			->method('getDateTime')
			->with()
			->willReturn(\DateTime::createFromFormat(\DateTime::ATOM, '2016-06-29T00:00:00+00:00'));

		$this->reminderService->onTouchCalendarObject($action, $objectData);
	}

	public function testProcessReminders():void {
		$this->backend->expects($this->at(0))
			->method('getRemindersToProcess')
			->with()
			->willReturn([
				[
					'id' => 1,
					'calendar_id' => 1337,
					'object_id' => 42,
					'uid' => 'wej2z68l9h',
					'is_recurring' => false,
					'recurrence_id' => 1465430400,
					'is_recurrence_exception' => false,
					'event_hash' => '5c70531aab15c92b52518ae10a2f78a4',
					'alarm_hash' => 'de919af7429d3b5c11e8b9d289b411a6',
					'type' => 'EMAIL',
					'is_relative' => true,
					'notification_date' => 1465429500,
					'is_repeat_based' => false,
					'calendardata' => self::CALENDAR_DATA,
					'displayname' => 'Displayname 123',
					'principaluri' => 'principals/users/user001',
				],
				[
					'id' => 2,
					'calendar_id' => 1337,
					'object_id' => 42,
					'uid' => 'wej2z68l9h',
					'is_recurring' => false,
					'recurrence_id' => 1465430400,
					'is_recurrence_exception' => false,
					'event_hash' => '5c70531aab15c92b52518ae10a2f78a4',
					'alarm_hash' => 'ecacbf07d413c3c78d1ac7ad8c469602',
					'type' => 'EMAIL',
					'is_relative' => true,
					'notification_date' => 1465429740,
					'is_repeat_based' => true,
					'calendardata' => self::CALENDAR_DATA_REPEAT,
					'displayname' => 'Displayname 123',
					'principaluri' => 'principals/users/user001',
				],
				[
					'id' => 3,
					'calendar_id' => 1337,
					'object_id' => 42,
					'uid' => 'wej2z68l9h',
					'is_recurring' => false,
					'recurrence_id' => 1465430400,
					'is_recurrence_exception' => false,
					'event_hash' => '5c70531aab15c92b52518ae10a2f78a4',
					'alarm_hash' => '35b3eae8e792aa2209f0b4e1a302f105',
					'type' => 'DISPLAY',
					'is_relative' => false,
					'notification_date' => 1465344000,
					'is_repeat_based' => false,
					'calendardata' =>  self::CALENDAR_DATA,
					'displayname' => 'Displayname 123',
					'principaluri' => 'principals/users/user001',
				],
				[
					'id' => 4,
					'calendar_id' => 1337,
					'object_id' => 42,
					'uid' => 'wej2z68l9h',
					'is_recurring' => true,
					'recurrence_id' => 1467244800,
					'is_recurrence_exception' => false,
					'event_hash' => 'fbdb2726bc0f7dfacac1d881c1453e20',
					'alarm_hash' => 'ecacbf07d413c3c78d1ac7ad8c469602',
					'type' => 'EMAIL',
					'is_relative' => true,
					'notification_date' => 1467243900,
					'is_repeat_based' => false,
					'calendardata' => self::CALENDAR_DATA_RECURRING_REPEAT,
					'displayname' => 'Displayname 123',
					'principaluri' => 'principals/users/user001',
				],
				[
					'id' => 5,
					'calendar_id' => 1337,
					'object_id' => 42,
					'uid' => 'wej2z68l9h',
					'is_recurring' => true,
					'recurrence_id' => 1467849600,
					'is_recurrence_exception' => false,
					'event_hash' => 'fbdb2726bc0f7dfacac1d881c1453e20',
					'alarm_hash' => '8996992118817f9f311ac5cc56d1cc97',
					'type' => 'EMAIL',
					'is_relative' => true,
					'notification_date' => 1467158400,
					'is_repeat_based' => false,
					'calendardata' => self::CALENDAR_DATA_RECURRING,
					'displayname' => 'Displayname 123',
					'principaluri' => 'principals/users/user001',
				]
			]);

		$this->notificationProviderManager->expects($this->at(0))
			->method('hasProvider')
			->with('EMAIL')
			->willReturn(true);

		$provider1 = $this->createMock(INotificationProvider::class);
		$this->notificationProviderManager->expects($this->at(1))
			->method('getProvider')
			->with('EMAIL')
			->willReturn($provider1);

		$this->notificationProviderManager->expects($this->at(2))
			->method('hasProvider')
			->with('EMAIL')
			->willReturn(true);

		$provider2 = $this->createMock(INotificationProvider::class);
		$this->notificationProviderManager->expects($this->at(3))
			->method('getProvider')
			->with('EMAIL')
			->willReturn($provider2);

		$this->notificationProviderManager->expects($this->at(4))
			->method('hasProvider')
			->with('DISPLAY')
			->willReturn(true);

		$provider3 = $this->createMock(INotificationProvider::class);
		$this->notificationProviderManager->expects($this->at(5))
			->method('getProvider')
			->with('DISPLAY')
			->willReturn($provider3);

		$this->notificationProviderManager->expects($this->at(6))
			->method('hasProvider')
			->with('EMAIL')
			->willReturn(true);

		$provider4 = $this->createMock(INotificationProvider::class);
		$this->notificationProviderManager->expects($this->at(7))
			->method('getProvider')
			->with('EMAIL')
			->willReturn($provider4);

		$this->notificationProviderManager->expects($this->at(8))
			->method('hasProvider')
			->with('EMAIL')
			->willReturn(true);

		$provider5 = $this->createMock(INotificationProvider::class);
		$this->notificationProviderManager->expects($this->at(9))
			->method('getProvider')
			->with('EMAIL')
			->willReturn($provider5);

		$user = $this->createMock(IUser::class);
		$this->userManager->expects($this->exactly(5))
			->method('get')
			->with('user001')
			->willReturn($user);

		$provider1->expects($this->once())
			->method('send')
			->with($this->callback(function($vevent) {
				if ($vevent->DTSTART->getDateTime()->format(\DateTime::ATOM) !== '2016-06-09T00:00:00+00:00') {
					return false;
				}
				return true;
			}, 'Displayname 123', $user));
		$provider2->expects($this->once())
			->method('send')
			->with($this->callback(function($vevent) {
				if ($vevent->DTSTART->getDateTime()->format(\DateTime::ATOM) !== '2016-06-09T00:00:00+00:00') {
					return false;
				}
				return true;
			}, 'Displayname 123', $user));
		$provider3->expects($this->once())
			->method('send')
			->with($this->callback(function($vevent) {
				if ($vevent->DTSTART->getDateTime()->format(\DateTime::ATOM) !== '2016-06-09T00:00:00+00:00') {
					return false;
				}
				return true;
			}, 'Displayname 123', $user));
		$provider4->expects($this->once())
			->method('send')
			->with($this->callback(function($vevent) {
				if ($vevent->DTSTART->getDateTime()->format(\DateTime::ATOM) !== '2016-06-30T00:00:00+00:00') {
					return false;
				}
				return true;
			}, 'Displayname 123', $user));
		$provider5->expects($this->once())
			->method('send')
			->with($this->callback(function($vevent) {
				if ($vevent->DTSTART->getDateTime()->format(\DateTime::ATOM) !== '2016-07-07T00:00:00+00:00') {
					return false;
				}
				return true;
			}, 'Displayname 123', $user));

		$this->backend->expects($this->at(1))
			->method('removeReminder')
			->with(1);
		$this->backend->expects($this->at(2))
			->method('removeReminder')
			->with(2);
		$this->backend->expects($this->at(3))
			->method('removeReminder')
			->with(3);
		$this->backend->expects($this->at(4))
			->method('removeReminder')
			->with(4);
		$this->backend->expects($this->at(5))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467848700, false)
			->willReturn(99);

		$this->backend->expects($this->at(6))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467848820, true)
			->willReturn(99);
		$this->backend->expects($this->at(7))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467848940, true)
			->willReturn(99);
		$this->backend->expects($this->at(8))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467849060, true)
			->willReturn(99);
		$this->backend->expects($this->at(9))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1467849600, false, 'fbdb2726bc0f7dfacac1d881c1453e20', 'ecacbf07d413c3c78d1ac7ad8c469602', 'EMAIL', true, 1467849180, true)
			->willReturn(99);
		$this->backend->expects($this->at(10))
			->method('removeReminder')
			->with(5);
		$this->backend->expects($this->at(11))
			->method('insertReminder')
			->with(1337, 42, 'wej2z68l9h', true, 1468454400, false, 'fbdb2726bc0f7dfacac1d881c1453e20', '8996992118817f9f311ac5cc56d1cc97', 'EMAIL', true, 1467763200, false)
			->willReturn(99);

		$this->timeFactory->method('getDateTime')
			->willReturn(\DateTime::createFromFormat(\DateTime::ATOM, '2016-06-08T00:00:00+00:00'));

		$this->reminderService->processReminders();
	}
}