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| 1 | <?php |
| 2 | |
| 3 | namespace AlexisLefebvre\Bundle\AsyncTweetsBundle\Controller; |
| 4 | |
| 5 | use AlexisLefebvre\Bundle\AsyncTweetsBundle\Entity\Tweet; |
| 6 | use AlexisLefebvre\Bundle\AsyncTweetsBundle\Entity\TweetRepository; |
| 7 | use Doctrine\ORM\EntityManagerInterface; |
| 8 | use Symfony\Bundle\FrameworkBundle\Controller\AbstractController as BaseController; |
| 9 | use Symfony\Component\HttpFoundation\Cookie; |
| 10 | use Symfony\Component\HttpFoundation\RedirectResponse; |
| 11 | use Symfony\Component\HttpFoundation\Request; |
| 12 | use Symfony\Component\HttpFoundation\Response; |
| 13 | use Symfony\Component\HttpFoundation\Session\Session; |
| 14 | |
| 15 | // Compatibility layer for Symfony 3.4 |
| 16 | if (!class_exists('Symfony\Bundle\FrameworkBundle\Controller\Controller')) { |
| 17 | class_alias('Symfony\Bundle\FrameworkBundle\Controller\Controller', 'Symfony\Bundle\FrameworkBundle\Controller\AbstractController'); |
| 18 | } |
| 19 | |
| 20 | class DefaultController extends BaseController |
| 21 | { |
| 22 | /** @var EntityManagerInterface */ |
| 23 | private $entityManager; |
| 24 | |
| 25 | /** @var TweetRepository */ |
| 26 | private $tweetRepository; |
| 27 | |
| 28 | public function __construct(EntityManagerInterface $entityManager) |
| 29 | { |
| 30 | $this->entityManager = $entityManager; |
| 31 | } |
| 32 | |
| 33 | public function indexAction(Request $request, ?int $firstTweetId): Response |
| 34 | { |
| 35 | /** @var TweetRepository $tweetRepository */ |
| 36 | $tweetRepository = $this->entityManager |
| 37 | ->getRepository(Tweet::class); |
| 38 | |
| 39 | $this->tweetRepository = $tweetRepository; |
| 40 | |
| 41 | $tweets = $this->tweetRepository |
| 42 | ->getWithUsersAndMedias($firstTweetId); |
| 43 | |
| 44 | $variables = $this->getVariables($request, $tweets, $firstTweetId); |
| 45 | |
| 46 | $response = $this->render( |
| 47 | '@AsyncTweets/Default/index.html.twig', |
| 48 | [ |
| 49 | 'tweets' => $tweets, |
| 50 | 'vars' => $variables, |
| 51 | ] |
| 52 | ); |
| 53 | |
| 54 | if (!is_null($variables['cookie'])) { |
| 55 | /** @var Cookie $cookie */ |
| 56 | $cookie = $variables['cookie']; |
| 57 | $response->headers->setCookie($cookie); |
| 58 | } |
| 59 | |
| 60 | return $response; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @param array<Tweet> $tweets |
| 65 | * |
| 66 | * @return array<Cookie|int|string|null> |
| 67 | */ |
| 68 | private function getVariables(Request $request, array $tweets, ?int $firstTweetId): array |
| 69 | { |
| 70 | $vars = [ |
| 71 | 'first' => $firstTweetId, |
| 72 | 'previous' => null, |
| 73 | 'next' => null, |
| 74 | 'number' => 0, |
| 75 | 'cookieId' => $this->getLastTweetIdFromCookie($request), |
| 76 | // No cookie by default |
| 77 | 'cookie' => null, |
| 78 | ]; |
| 79 | |
| 80 | if (count($tweets) > 0) { |
| 81 | $vars = $this->getTweetsVars($tweets, $vars); |
| 82 | } |
| 83 | |
| 84 | return $vars; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * If a Tweet is displayed, fetch data from repository. |
| 89 | * |
| 90 | * @param array<Tweet> $tweets |
| 91 | * @param array<Cookie|int|string|null> $vars |
| 92 | * |
| 93 | * @return array<Cookie|int|string|null> |
| 94 | */ |
| 95 | private function getTweetsVars(array $tweets, array $vars): array |
| 96 | { |
| 97 | /** @var int $firstTweetId */ |
| 98 | $firstTweetId = $tweets[0]->getId(); |
| 99 | |
| 100 | $vars['previous'] = $this->tweetRepository |
| 101 | ->getPreviousTweetId($firstTweetId); |
| 102 | $vars['next'] = $this->tweetRepository |
| 103 | ->getNextTweetId($firstTweetId); |
| 104 | |
| 105 | // Only update the cookie if the last Tweet Id is bigger than |
| 106 | // the one in the cookie |
| 107 | if ($firstTweetId > $vars['cookieId']) { |
| 108 | $vars['cookie'] = $this->createCookie($firstTweetId); |
| 109 | $vars['cookieId'] = $firstTweetId; |
| 110 | } |
| 111 | |
| 112 | /** @var int */ |
| 113 | $cookieId = $vars['cookieId']; |
| 114 | $vars['number'] = $this->tweetRepository |
| 115 | ->countPendingTweets($cookieId); |
| 116 | |
| 117 | $vars['first'] = $firstTweetId; |
| 118 | |
| 119 | return $vars; |
| 120 | } |
| 121 | |
| 122 | private function getLastTweetIdFromCookie(Request $request): ?int |
| 123 | { |
| 124 | if ($request->cookies->has('lastTweetId')) { |
| 125 | return (int) $request->cookies->get('lastTweetId'); |
| 126 | } |
| 127 | |
| 128 | return null; |
| 129 | } |
| 130 | |
| 131 | private function createCookie(int $firstTweetId): Cookie |
| 132 | { |
| 133 | $nextYear = new \DateTime('now'); |
| 134 | $nextYear->add(new \DateInterval('P1Y')); |
| 135 | |
| 136 | // Set last Tweet Id |
| 137 | $cookie = new Cookie( |
| 138 | 'lastTweetId', |
| 139 | (string) $firstTweetId, |
| 140 | $nextYear->format('U') |
| 141 | ); |
| 142 | |
| 143 | return $cookie; |
| 144 | } |
| 145 | |
| 146 | public function resetCookieAction(): RedirectResponse |
| 147 | { |
| 148 | /* @see http://www.craftitonline.com/2011/07/symfony2-how-to-set-a-cookie/ */ |
| 149 | $response = new RedirectResponse( |
| 150 | $this->generateUrl('asynctweets_homepage') |
| 151 | ); |
| 152 | |
| 153 | // Reset last Tweet Id |
| 154 | $cookie = new Cookie('lastTweetId', null); |
| 155 | $response->headers->setCookie($cookie); |
| 156 | |
| 157 | return $response; |
| 158 | } |
| 159 | |
| 160 | public function deleteLessThanAction(Request $request): RedirectResponse |
| 161 | { |
| 162 | $lastTweetId = $this->getLastTweetIdFromCookie($request); |
| 163 | |
| 164 | if (!is_null($lastTweetId)) { |
| 165 | /** @var TweetRepository $tweetRepository */ |
| 166 | $tweetRepository = $this->entityManager |
| 167 | ->getRepository(Tweet::class); |
| 168 | |
| 169 | $count = $tweetRepository |
| 170 | ->deleteAndHideTweetsLessThanId($lastTweetId); |
| 171 | |
| 172 | /** @var Session<int> $session */ |
| 173 | $session = $this->get('session'); |
| 174 | |
| 175 | $session->getFlashBag()->add( |
| 176 | 'message', |
| 177 | sprintf('%s tweets deleted.', $count) |
| 178 | ); |
| 179 | } |
| 180 | |
| 181 | return $this->redirect($this->generateUrl('asynctweets_homepage')); |
| 182 | } |
| 183 | } |