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<?php |
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/* |
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* This file is part of the Shared Kernel library. |
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* |
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* Copyright (c) 2016-present LIN3S <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace LIN3S\SharedKernel\Application\Event; |
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use LIN3S\SharedKernel\Domain\Model\EventsUrlGenerator; |
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use LIN3S\SharedKernel\Event\EventStore; |
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/** |
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* @author Beñat Espiña <[email protected]> |
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*/ |
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class GetEvents |
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{ |
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private $eventStore; |
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private $urlGenerator; |
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public function __construct(EventStore $eventStore, EventsUrlGenerator $urlGenerator) |
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{ |
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$this->eventStore = $eventStore; |
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$this->urlGenerator = $urlGenerator; |
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} |
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public function __invoke(GetEventsQuery $query) : array |
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{ |
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$page = $query->page(); |
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$pageSize = $query->pageSize(); |
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$since = $query->since(); |
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$offset = ($page - 1) * $pageSize; |
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$events = $this->eventStore->eventsSince($since, $offset, $pageSize); |
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return $this->response($events, $page, $pageSize); |
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} |
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public function response(array $events, int $page, int $pageSize) : array |
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{ |
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return [ |
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'_meta' => [ |
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'count' => $this->numberOfEvents($events), |
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'page' => $page, |
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], |
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'_links' => $this->links($events, $page, $pageSize), |
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'data' => $events, |
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]; |
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} |
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private function numberOfEvents(array $events) : int |
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{ |
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return count($events); |
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} |
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private function links(array $events, int $page, int $pageSize) : array |
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{ |
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$links = [ |
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'first' => $this->urlGenerator->generate(1), |
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'self' => $this->urlGenerator->generate($page), |
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]; |
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if ($this->numberOfEvents($events) === $pageSize) { |
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$links = array_merge( |
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['first' => $this->urlGenerator->generate(1)], |
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['self' => $links['self']], |
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['next' => $this->urlGenerator->generate($page + 1)] |
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); |
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} |
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return $links; |
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} |
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} |
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LIN3S /
SharedKernel
