<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 * @copyright Copyright (c) 2017, Georg Ehrke
 *
 * @author Georg Ehrke <oc.list@georgehrke.com>
 * @author Joas Schilling <coding@schilljs.com>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @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\Schedule;

use OC\Mail\Mailer;
use OCA\DAV\CalDAV\Schedule\IMipPlugin;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\Defaults;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\IL10N;
use OCP\ILogger;
use OCP\IURLGenerator;
use OCP\L10N\IFactory;
use OCP\Mail\IAttachment;
use OCP\Mail\IEMailTemplate;
use OCP\Mail\IMailer;
use OCP\Mail\IMessage;
use OCP\Security\ISecureRandom;
use Sabre\VObject\Component\VCalendar;
use Sabre\VObject\ITip\Message;
use Test\TestCase;

class IMipPluginTest extends TestCase {

        public function setUp() {
		$this->mailMessage = $this->createMock(IMessage::class);
		$this->mailMessage->method('setFrom')->willReturn($this->mailMessage);
		$this->mailMessage->method('setReplyTo')->willReturn($this->mailMessage);
		$this->mailMessage->method('setTo')->willReturn($this->mailMessage);

		$this->mailer = $this->getMockBuilder(IMailer::class)->disableOriginalConstructor()->getMock();
		$this->mailer->method('createMessage')->willReturn($this->mailMessage);

		$this->emailTemplate = $this->createMock(IEMailTemplate::class);
		$this->mailer->method('createEMailTemplate')->willReturn($this->emailTemplate);

		$this->emailAttachment = $this->createMock(IAttachment::class);
		$this->mailer->method('createAttachment')->willReturn($this->emailAttachment);

		$logger = $this->getMockBuilder(ILogger::class)->disableOriginalConstructor()->getMock();

		$this->timeFactory = $this->getMockBuilder(ITimeFactory::class)->disableOriginalConstructor()->getMock();
		$this->timeFactory->method('getTime')->willReturn(1496912528); // 2017-01-01

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

		$l10n = $this->createMock(IL10N::class);
		$l10nFactory = $this->createMock(IFactory::class);
		$l10nFactory->method('get')->willReturn($l10n);

		$urlGenerator = $this->createMock(IURLGenerator::class);

		$this->queryBuilder = $this->createMock(IQueryBuilder::class);
		$db = $this->createMock(IDBConnection::class);
		$db->method('getQueryBuilder')
			->with()
			->will($this->returnValue($this->queryBuilder));

		$random = $this->createMock(ISecureRandom::class);
		$random->method('generate')
			->with(60, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789')
			->will($this->returnValue('random_token'));

		$defaults = $this->createMock(Defaults::class);
		$defaults->method('getName')
			->will($this->returnValue('Instance Name 123'));

		$this->plugin = new IMipPlugin($this->config, $this->mailer, $logger, $this->timeFactory, $l10nFactory, $urlGenerator, $defaults, $random, $db, 'user123');
	}

	public function testDelivery() {
		$this->config
			->method('getSystemValue')
			->with('dav.invitation_link_recipients', true)
			->willReturn(true);

		$message = $this->_testMessage();
		$this->_expectSend();
		$this->plugin->schedule($message);
		$this->assertEquals('1.1', $message->getScheduleStatus());
	}

	public function testFailedDelivery() {
		$this->config
			->method('getSystemValue')
			->with('dav.invitation_link_recipients', true)
			->willReturn(true);

		$message = $this->_testMessage();
		$this->mailer
			->method('send')
			->willThrowException(new \Exception());
		$this->_expectSend();
		$this->plugin->schedule($message);
		$this->assertEquals('5.0', $message->getScheduleStatus());
	}

	/**
	 * @dataProvider dataNoMessageSendForPastEvents
	 */
	public function testNoMessageSendForPastEvents($veventParams, $expectsMail) {

		$this->config
			->method('getSystemValue')
			->with('dav.invitation_link_recipients', true)
			->willReturn(true);

		$message = $this->_testMessage( $veventParams );

		$this->_expectSend('frodo@hobb.it', $expectsMail, $expectsMail);

		$this->plugin->schedule($message);

		if ($expectsMail) {
			$this->assertEquals('1.1', $message->getScheduleStatus());
 		} else {
			$this->assertEquals(false, $message->getScheduleStatus());
		}
	}

	public function dataNoMessageSendForPastEvents() {
		return [
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00')], false],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00')], false],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-12-31 00:00:00')], true],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DURATION' => 'P1D'], false],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DURATION' => 'P52W'], true],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY'], true],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;COUNT=3'], false],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;UNTIL=20170301T000000Z'], false],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;COUNT=33'], true],
			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;UNTIL=20171001T000000Z'], true],
		];
	}

	/**
	* @dataProvider dataIncludeResponseButtons
	*/
	public function testIncludeResponseButtons( $config_setting, $recipient, $has_buttons ) {
		$message = $this->_testMessage([],$recipient);

		$this->_expectSend($recipient, true, $has_buttons);
		$this->config
			->method('getSystemValue')
			->with('dav.invitation_link_recipients', true)
			->willReturn($config_setting);

		$this->plugin->schedule($message);
		$this->assertEquals('1.1', $message->getScheduleStatus());
	}

	public function dataIncludeResponseButtons() {
		return [
			// dav.invitation_link_recipients, recipient, $has_buttons
			[ true, 'joe@internal.com', true],
			[ 'joe@internal.com', 'joe@internal.com', true],
			[ 'internal.com', 'joe@internal.com', true],
			[ ['pete@otherinternal.com', 'internal.com'], 'joe@internal.com', true],
			[ false, 'joe@internal.com', false],
			[ 'internal.com', 'joe@external.com', false],
			[ ['jane@otherinternal.com', 'internal.com'], 'joe@otherinternal.com', false],
		];
	}

	private function _testMessage($attrs = [], $recipient = 'frodo@hobb.it' ) {
		$message = new Message();
		$message->method = 'REQUEST';
		$message->message = new VCalendar();
		$message->message->add('VEVENT', array_merge([
			'UID' => 'uid-1234',
			'SEQUENCE' => 0,
			'SUMMARY' => 'Fellowship meeting',
			'DTSTART' => new \DateTime('2018-01-01 00:00:00')
		], $attrs));
		$message->message->VEVENT->add( 'ORGANIZER', 'mailto:gandalf@wiz.ard' );
		$message->message->VEVENT->add( 'ATTENDEE', 'mailto:'.$recipient, [ 'RSVP' => 'TRUE' ] );
		$message->sender = 'mailto:gandalf@wiz.ard';
		$message->recipient = 'mailto:'.$recipient;
		return $message;
	}


        private function _expectSend( $recipient = 'frodo@hobb.it', $expectSend = true, $expectButtons = true ) {

		// if the event is in the past, we skip out
		if (!$expectSend) {
			$this->mailer
				->expects($this->never())
				->method('send');
			return;
		}

		$this->emailTemplate->expects($this->once())
			->method('setSubject')
			->with('Invitation: Fellowship meeting');
		$this->mailMessage->expects($this->once())
			->method('setTo')
			->with([$recipient => null]);
		$this->mailMessage->expects($this->once())
			->method('setReplyTo')
			->with(['gandalf@wiz.ard' => null]);
		$this->mailer
			->expects($this->once())
			->method('send');

		if ($expectButtons) {
			$this->queryBuilder->expects($this->at(0))
				->method('insert')
				->with('calendar_invitations')
				->will($this->returnValue($this->queryBuilder));
			$this->queryBuilder->expects($this->at(8))
				->method('values')
				->will($this->returnValue($this->queryBuilder));
			$this->queryBuilder->expects($this->at(9))
				->method('execute');
		}
		else {
			$this->queryBuilder->expects($this->never())
				->method('insert')
				->with('calendar_invitations');
		}
	}
}