121 lines
4.0 KiB
PHP
121 lines
4.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Shaarli\Front\Controller\Visitor;
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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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class TagController extends ShaarliVisitorController
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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 $this->redirect($response, '/?searchtags=' . urlencode($newTag));
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}
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return $this->redirect($response, '/');
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}
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$currentUrl = parse_url($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($params['addtag']);
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}
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$tagsSeparator = $this->container->conf->get('general.tags_separator', ' ');
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// Check if this tag is already in the search query and ignore it if it is.
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// Each tag is always separated by a space
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$currentTags = tags_str2array($params['searchtags'] ?? '', $tagsSeparator);
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$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'] = tags_array2str($currentTags, $tagsSeparator);
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// We also remove page (keeping the same page has no sense, since the results are different)
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unset($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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* Remove a tag from the current search through an HTTP redirection.
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*
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* @param array $args Should contain `tag` key as tag to remove from current search
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*/
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public function removeTag(Request $request, Response $response, array $args): Response
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{
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$referer = $this->container->environment['HTTP_REFERER'] ?? null;
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// If the referrer is not provided, we can update the search, so we failback on the bookmark list
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if (empty($referer)) {
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return $this->redirect($response, '/');
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}
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$tagToRemove = $args['tag'] ?? null;
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$currentUrl = parse_url($referer);
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parse_str($currentUrl['query'] ?? '', $params);
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if (null === $tagToRemove) {
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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['removetag'])) {
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unset($params['removetag']);
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}
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if (isset($params['searchtags'])) {
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$tagsSeparator = $this->container->conf->get('general.tags_separator', ' ');
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$tags = tags_str2array($params['searchtags'] ?? '', $tagsSeparator);
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// Remove value from array $tags.
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$tags = array_diff($tags, [$tagToRemove]);
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$params['searchtags'] = tags_array2str($tags, $tagsSeparator);
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if (empty($params['searchtags'])) {
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unset($params['searchtags']);
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}
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// We also remove page (keeping the same page has no sense, since the results are different)
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unset($params['page']);
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}
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$queryParams = count($params) > 0 ? '?' . http_build_query($params) : '';
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return $response->withRedirect(($currentUrl['path'] ?? './') . $queryParams);
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}
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}
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