<?php declare(strict_types = 1);

namespace MailPoet\Test\Router\Endpoints;

use Codeception\Stub;
use MailPoet\Cron\Workers\StatsNotifications\NewsletterLinkRepository;
use MailPoet\Entities\NewsletterEntity;
use MailPoet\Entities\NewsletterLinkEntity;
use MailPoet\Entities\ScheduledTaskEntity;
use MailPoet\Entities\ScheduledTaskSubscriberEntity;
use MailPoet\Entities\SendingQueueEntity;
use MailPoet\Entities\SubscriberEntity;
use MailPoet\Newsletter\Sending\ScheduledTaskSubscribersRepository;
use MailPoet\Newsletter\Sending\SendingQueuesRepository;
use MailPoet\Router\Endpoints\Track;
use MailPoet\Subscribers\LinkTokens;
use MailPoet\Tasks\Sending;
use MailPoet\Test\DataFactories\Newsletter as NewsletterFactory;
use MailPoet\Test\DataFactories\NewsletterLink as NewsletterLinkFactory;

class TrackTest extends \MailPoetTest {
  public $track;
  public $trackData;
  public $link;
  public $queue;
  public $subscriber;
  public $newsletter;

  /** @var LinkTokens */
  private $linkTokens;

  public function _before() {
    parent::_before();
    // create newsletter
    $newsletter = new NewsletterEntity();
    $newsletter->setType('type');
    $newsletter->setSubject('Subject');
    $this->newsletter = $newsletter;
    $this->entityManager->persist($newsletter);
    // create subscriber
    $subscriber = new SubscriberEntity();
    $subscriber->setEmail('test@example.com');
    $subscriber->setFirstName('First');
    $subscriber->setLastName('Last');
    $subscriber->setLinkToken('token');
    $this->subscriber = $subscriber;
    $this->entityManager->persist($subscriber);
    // create queue
    $task = new ScheduledTaskEntity();
    $task->setType('sending');
    $this->entityManager->persist($task);
    $queue = new SendingQueueEntity();
    $queue->setTask($task);
    $queue->setNewsletter($newsletter);
    $queue->setSubscribers((string)$subscriber->getId());
    $this->queue = $queue;
    $this->entityManager->persist($queue);
    // create link
    $link = new NewsletterLinkEntity($newsletter, $queue, 'url', 'hash');
    $this->link = $link;
    $this->entityManager->persist($link);
    $scheduledTaskSubscriber = new ScheduledTaskSubscriberEntity($task, $subscriber, 1);
    $this->entityManager->persist($scheduledTaskSubscriber);
    $this->entityManager->flush();
    $this->linkTokens = $this->diContainer->get(LinkTokens::class);
    // build track data
    $this->trackData = [
      'queue_id' => $queue->getId(),
      'subscriber_id' => $subscriber->getId(),
      'newsletter_id' => $newsletter->getId(),
      'subscriber_token' => $this->linkTokens->getToken($subscriber),
      'link_hash' => $link->getHash(),
      'preview' => false,
    ];
    $scheduledTaskSubscribersRepository = $this->diContainer->get(ScheduledTaskSubscribersRepository::class);
    $scheduledTaskSubscribersRepository->updateProcessedSubscribers($task, [(int)$subscriber->getId()]);
    // instantiate class
    $this->track = $this->diContainer->get(Track::class);
  }

  public function testItReturnsFalseWhenTrackDataIsMissing() {
    // queue ID is required
    $data = $this->trackData;
    unset($data['queue_id']);
    expect($this->track->_processTrackData($data))->false();
    // subscriber ID is required
    $data = $this->trackData;
    unset($data['subscriber_id']);
    expect($this->track->_processTrackData($data))->false();
    // subscriber token is required
    $data = $this->trackData;
    unset($data['subscriber_token']);
    expect($this->track->_processTrackData($data))->false();
  }

  public function testItFailsWhenSubscriberTokenDoesNotMatch() {
    $data = (object)array_merge(
      $this->trackData,
      [
        'queue' => $this->queue,
        'subscriber' => $this->subscriber,
        'newsletter' => $this->newsletter,
      ]
    );
    $data->subscriber->setEmail('random@email.com');
    $this->entityManager->flush();
    $track = Stub::make(Track::class, [
      'sendingQueuesRepository' => $this->diContainer->get(SendingQueuesRepository::class),
      'linkTokens' => $this->linkTokens,
      'terminate' => function($code) {
        expect($code)->equals(403);
      },
    ]);
    $track->_validateTrackData($data);
  }

  public function testItFailsWhenSubscriberIsNotOnProcessedList() {
    $data = (object)array_merge(
      $this->trackData,
      [
        'queue' => $this->queue,
        'subscriber' => $this->subscriber,
        'newsletter' => $this->newsletter,
        'subscriber_token' => $this->subscriber->getLinkToken(),
      ]
    );
    $subscriber = new SubscriberEntity();
    $subscriber->setEmail('test1@example.com');
    $subscriber->setFirstName('First');
    $subscriber->setLastName('Last');
    $subscriber->setLinkToken($this->subscriber->getLinkToken());
    $this->entityManager->persist($subscriber);
    $this->entityManager->flush();
    $data->subscriber = $subscriber;
    expect($this->track->_validateTrackData($data))->false();
  }

  public function testItDoesNotRequireWpUsersToBeOnProcessedListWhenPreviewIsEnabled() {
    $data = (object)array_merge(
      $this->trackData,
      [
        'queue' => $this->queue,
        'subscriber' => $this->subscriber,
        'newsletter' => $this->newsletter,
      ]
    );
    $this->subscriber->setWpUserId(99);
    $this->entityManager->flush();
    $data->preview = true;
    expect($this->track->_validateTrackData($data))->equals($data);
  }

  public function testItRequiresValidQueueToGetNewsletter() {
    $data = $this->trackData;
    $data['newsletter_id'] = false;
    $data['queue_id'] = 99;
    $processedData = $this->track->_processTrackData($data);
    expect($processedData)->false();
  }

  public function testItGetsNewsletterFromQueue() {
    $data = $this->trackData;
    $data['newsletter_id'] = false;
    $processedData = $this->track->_processTrackData($data);
    expect($processedData->newsletter->getId())->equals($this->newsletter->getId());
  }

  public function testItProcessesTrackData() {
    $processedData = $this->track->_processTrackData($this->trackData);
    expect($processedData->queue->getId())->equals($this->queue->getId());
    expect($processedData->subscriber->getId())->equals($this->subscriber->getId());
    expect($processedData->newsletter->getId())->equals($this->newsletter->getId());
    expect($processedData->link->getId())->equals($this->link->getId());
  }

  public function testItGetsProperHashWhenDuplicateHashesExist() {
    // create another newsletter and queue
    $newsletterFactory = new NewsletterFactory();
    $newsletter = $newsletterFactory
      ->withSendingQueue()
      ->create();
    $scheduledTaskEntity = $newsletter->getLatestQueue()->getTask();
    $scheduledTaskEntity->setType(Sending::TASK_TYPE);
    $this->entityManager->persist($scheduledTaskEntity);

    $scheduledTaskSubscriber = new ScheduledTaskSubscriberEntity($scheduledTaskEntity, $this->subscriber, 1);
    $this->entityManager->persist($scheduledTaskSubscriber);
    $this->entityManager->flush();
    $scheduledTaskEntity->getSubscribers()->add($scheduledTaskSubscriber);

    $scheduledTaskSubscribersRepository = $this->diContainer->get(ScheduledTaskSubscribersRepository::class);
    $scheduledTaskSubscribersRepository->updateProcessedSubscribers($scheduledTaskEntity, [$this->subscriber->getId()]);

    $queue = $newsletter->getLatestQueue();
    $trackData = $this->trackData;
    $trackData['queue_id'] = $queue->getId();
    $trackData['newsletter_id'] = $newsletter->getId();

    // create another link with the same hash but different queue ID
    $newsletterLinkFactory = new NewsletterLinkFactory($newsletter);
    $link = $newsletterLinkFactory
      ->withHash($this->link->getHash())
      ->withUrl($this->link->getUrl())
      ->create();

    // assert that 2 links with identical hash exist
    $newsletterLinkRepository = $this->diContainer->get(NewsletterLinkRepository::class);
    $newsletterLink = $newsletterLinkRepository->findBy(['hash' => $link->getHash()]);
    expect($newsletterLink)->count(2);

    // assert that the fetched link ID belong to the newly created link
    $processedData = $this->track->_processTrackData($trackData);
    expect($processedData->link->getId())->equals($link->getId());
  }
}