75 lines
2.2 KiB
PHP
75 lines
2.2 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Shaarli\Front\Controller;
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use Slim\Http\Request;
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use Slim\Http\Response;
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/**
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* Class TagController
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*
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* Slim controller handle tags.
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*
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* @package Front\Controller
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*/
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class TagController extends ShaarliController
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{
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/**
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* Add another tag in the current search through an HTTP redirection.
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*
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* @param array $args Should contain `newTag` key as tag to add to current search
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*/
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public function addTag(Request $request, Response $response, array $args): Response
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{
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$newTag = $args['newTag'] ?? null;
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$referer = $this->container->environment['HTTP_REFERER'] ?? null;
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// In case browser does not send HTTP_REFERER, we search a single tag
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if (null === $referer) {
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if (null !== $newTag) {
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return $response->withRedirect('./?searchtags='. urlencode($newTag));
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}
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return $response->withRedirect('./');
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}
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$currentUrl = parse_url($this->container->environment['HTTP_REFERER']);
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parse_str($currentUrl['query'] ?? '', $params);
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if (null === $newTag) {
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return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params));
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}
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// Prevent redirection loop
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if (isset($params['addtag'])) {
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unset($params['addtag']);
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}
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// Check if this tag is already in the search query and ignore it if it is.
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// Each tag is always separated by a space
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$currentTags = isset($params['searchtags']) ? explode(' ', $params['searchtags']) : [];
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$addtag = true;
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foreach ($currentTags as $value) {
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if ($value === $newTag) {
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$addtag = false;
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break;
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}
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}
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// Append the tag if necessary
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if (true === $addtag) {
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$currentTags[] = trim($newTag);
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}
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$params['searchtags'] = trim(implode(' ', $currentTags));
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// We also remove page (keeping the same page has no sense, since the results are different)
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unset($params['page']);
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return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params));
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}
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}
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