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1 | <?php | |
2 | ||
3 | declare(strict_types=1); | |
4 | ||
5 | namespace Shaarli\Front\Controller\Visitor; | |
6 | ||
7 | use Slim\Http\Request; | |
8 | use Slim\Http\Response; | |
9 | ||
10 | /** | |
11 | * Class TagController | |
12 | * | |
13 | * Slim controller handle tags. | |
14 | */ | |
15 | class TagController extends ShaarliVisitorController | |
16 | { | |
17 | /** | |
18 | * Add another tag in the current search through an HTTP redirection. | |
19 | * | |
20 | * @param array $args Should contain `newTag` key as tag to add to current search | |
21 | */ | |
22 | public function addTag(Request $request, Response $response, array $args): Response | |
23 | { | |
24 | $newTag = $args['newTag'] ?? null; | |
25 | $referer = $this->container->environment['HTTP_REFERER'] ?? null; | |
26 | ||
27 | // In case browser does not send HTTP_REFERER, we search a single tag | |
28 | if (null === $referer) { | |
29 | if (null !== $newTag) { | |
30 | return $this->redirect($response, '/?searchtags='. urlencode($newTag)); | |
31 | } | |
32 | ||
33 | return $this->redirect($response, '/'); | |
34 | } | |
35 | ||
36 | $currentUrl = parse_url($referer); | |
37 | parse_str($currentUrl['query'] ?? '', $params); | |
38 | ||
39 | if (null === $newTag) { | |
40 | return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params)); | |
41 | } | |
42 | ||
43 | // Prevent redirection loop | |
44 | if (isset($params['addtag'])) { | |
45 | unset($params['addtag']); | |
46 | } | |
47 | ||
48 | $tagsSeparator = $this->container->conf->get('general.tags_separator', ' '); | |
49 | // Check if this tag is already in the search query and ignore it if it is. | |
50 | // Each tag is always separated by a space | |
51 | $currentTags = tags_str2array($params['searchtags'] ?? '', $tagsSeparator); | |
52 | ||
53 | $addtag = true; | |
54 | foreach ($currentTags as $value) { | |
55 | if ($value === $newTag) { | |
56 | $addtag = false; | |
57 | break; | |
58 | } | |
59 | } | |
60 | ||
61 | // Append the tag if necessary | |
62 | if (true === $addtag) { | |
63 | $currentTags[] = trim($newTag); | |
64 | } | |
65 | ||
66 | $params['searchtags'] = tags_array2str($currentTags, $tagsSeparator); | |
67 | ||
68 | // We also remove page (keeping the same page has no sense, since the results are different) | |
69 | unset($params['page']); | |
70 | ||
71 | return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params)); | |
72 | } | |
73 | ||
74 | /** | |
75 | * Remove a tag from the current search through an HTTP redirection. | |
76 | * | |
77 | * @param array $args Should contain `tag` key as tag to remove from current search | |
78 | */ | |
79 | public function removeTag(Request $request, Response $response, array $args): Response | |
80 | { | |
81 | $referer = $this->container->environment['HTTP_REFERER'] ?? null; | |
82 | ||
83 | // If the referrer is not provided, we can update the search, so we failback on the bookmark list | |
84 | if (empty($referer)) { | |
85 | return $this->redirect($response, '/'); | |
86 | } | |
87 | ||
88 | $tagToRemove = $args['tag'] ?? null; | |
89 | $currentUrl = parse_url($referer); | |
90 | parse_str($currentUrl['query'] ?? '', $params); | |
91 | ||
92 | if (null === $tagToRemove) { | |
93 | return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params)); | |
94 | } | |
95 | ||
96 | // Prevent redirection loop | |
97 | if (isset($params['removetag'])) { | |
98 | unset($params['removetag']); | |
99 | } | |
100 | ||
101 | if (isset($params['searchtags'])) { | |
102 | $tagsSeparator = $this->container->conf->get('general.tags_separator', ' '); | |
103 | $tags = tags_str2array($params['searchtags'] ?? '', $tagsSeparator); | |
104 | // Remove value from array $tags. | |
105 | $tags = array_diff($tags, [$tagToRemove]); | |
106 | $params['searchtags'] = tags_array2str($tags, $tagsSeparator); | |
107 | ||
108 | if (empty($params['searchtags'])) { | |
109 | unset($params['searchtags']); | |
110 | } | |
111 | ||
112 | // We also remove page (keeping the same page has no sense, since the results are different) | |
113 | unset($params['page']); | |
114 | } | |
115 | ||
116 | $queryParams = count($params) > 0 ? '?' . http_build_query($params) : ''; | |
117 | ||
118 | return $response->withRedirect(($currentUrl['path'] ?? './') . $queryParams); | |
119 | } | |
120 | } |