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by Alexis
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DefaultController::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 3
CRAP Score 1

Importance

Changes 0
Metric Value
dl 0
loc 4
ccs 3
cts 3
cp 1
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 1
crap 1
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<?php
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namespace AlexisLefebvre\Bundle\AsyncTweetsBundle\Controller;
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use AlexisLefebvre\Bundle\AsyncTweetsBundle\Entity\Tweet;
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use AlexisLefebvre\Bundle\AsyncTweetsBundle\Entity\TweetRepository;
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use Doctrine\ORM\EntityManagerInterface;
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use Symfony\Bundle\FrameworkBundle\Controller\AbstractController as BaseController;
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use Symfony\Component\HttpFoundation\Cookie;
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use Symfony\Component\HttpFoundation\RedirectResponse;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
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use Symfony\Component\HttpFoundation\Session\Session;
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// Compatibility layer for Symfony 3.4
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if (!class_exists('Symfony\Bundle\FrameworkBundle\Controller\Controller')) {
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    class_alias('Symfony\Bundle\FrameworkBundle\Controller\Controller', 'Symfony\Bundle\FrameworkBundle\Controller\AbstractController');
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}
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class DefaultController extends BaseController
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{
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    /** @var EntityManagerInterface */
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    private $entityManager;
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    /** @var TweetRepository */
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    private $tweetRepository;
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    public function __construct(EntityManagerInterface $entityManager)
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    {
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        $this->entityManager = $entityManager;
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    }
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    public function indexAction(Request $request, ?int $firstTweetId): Response
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    {
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        /** @var TweetRepository $tweetRepository */
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        $tweetRepository = $this->entityManager
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            ->getRepository(Tweet::class);
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        $this->tweetRepository = $tweetRepository;
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        $tweets = $this->tweetRepository
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            ->getWithUsersAndMedias($firstTweetId);
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        $variables = $this->getVariables($request, $tweets, $firstTweetId);
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        $response = $this->render(
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            '@AsyncTweets/Default/index.html.twig',
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            [
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                'tweets' => $tweets,
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                'vars'   => $variables,
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            ]
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        );
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        if (!is_null($variables['cookie'])) {
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            /** @var Cookie $cookie */
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            $cookie = $variables['cookie'];
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            $response->headers->setCookie($cookie);
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        }
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        return $response;
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    }
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    /**
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     * @param array<Tweet> $tweets
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     *
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     * @return array<Cookie|int|string|null>
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     */
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    private function getVariables(Request $request, array $tweets, ?int $firstTweetId): array
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    {
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        $vars = [
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            'first'    => $firstTweetId,
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            'previous' => null,
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            'next'     => null,
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            'number'   => 0,
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            'cookieId' => $this->getLastTweetIdFromCookie($request),
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            // No cookie by default
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            'cookie' => null,
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        ];
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        if (count($tweets) > 0) {
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            $vars = $this->getTweetsVars($tweets, $vars);
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        }
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        return $vars;
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    }
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    /**
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     * If a Tweet is displayed, fetch data from repository.
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     *
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     * @param array<Tweet>                  $tweets
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     * @param array<Cookie|int|string|null> $vars
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     *
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     * @return array<Cookie|int|string|null>
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     */
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    private function getTweetsVars(array $tweets, array $vars): array
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    {
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        /** @var int $firstTweetId */
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        $firstTweetId = $tweets[0]->getId();
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        $vars['previous'] = $this->tweetRepository
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            ->getPreviousTweetId($firstTweetId);
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        $vars['next'] = $this->tweetRepository
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            ->getNextTweetId($firstTweetId);
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        // Only update the cookie if the last Tweet Id is bigger than
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        //  the one in the cookie
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        if ($firstTweetId > $vars['cookieId']) {
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            $vars['cookie'] = $this->createCookie($firstTweetId);
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            $vars['cookieId'] = $firstTweetId;
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        }
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        /** @var int */
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        $cookieId = $vars['cookieId'];
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        $vars['number'] = $this->tweetRepository
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            ->countPendingTweets($cookieId);
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        $vars['first'] = $firstTweetId;
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        return $vars;
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    }
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    private function getLastTweetIdFromCookie(Request $request): ?int
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    {
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        if ($request->cookies->has('lastTweetId')) {
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            return (int) $request->cookies->get('lastTweetId');
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        }
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        return null;
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    }
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    private function createCookie(int $firstTweetId): Cookie
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    {
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        $nextYear = new \DateTime('now');
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        $nextYear->add(new \DateInterval('P1Y'));
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        // Set last Tweet Id
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        $cookie = new Cookie(
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            'lastTweetId',
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            (string) $firstTweetId,
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            $nextYear->format('U')
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        );
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        return $cookie;
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    }
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    public function resetCookieAction(): RedirectResponse
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    {
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        /* @see http://www.craftitonline.com/2011/07/symfony2-how-to-set-a-cookie/ */
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        $response = new RedirectResponse(
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            $this->generateUrl('asynctweets_homepage')
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        );
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        // Reset last Tweet Id
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        $cookie = new Cookie('lastTweetId', null);
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        $response->headers->setCookie($cookie);
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        return $response;
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    }
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    public function deleteLessThanAction(Request $request): RedirectResponse
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    {
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        $lastTweetId = $this->getLastTweetIdFromCookie($request);
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        if (!is_null($lastTweetId)) {
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            /** @var TweetRepository $tweetRepository */
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            $tweetRepository = $this->entityManager
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                ->getRepository(Tweet::class);
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            $count = $tweetRepository
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                ->deleteAndHideTweetsLessThanId($lastTweetId);
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            /** @var Session<int> $session */
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            $session = $this->get('session');
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            $session->getFlashBag()->add(
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                'message',
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                sprintf('%s tweets deleted.', $count)
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            );
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        }
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        return $this->redirect($this->generateUrl('asynctweets_homepage'));
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    }
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}
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