suwako / LittleBeast

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LittleBeast / src / Std / Lib / Fedi / Notes.php
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1<?php
2/*************************************************************
3# 076 License
4
5Copyright (c) テクニカル諏訪子
6
7Permission is hereby granted to any person obtaining a copy of the software
8Little Beast (the "Software") to use, modify, merge, copy, publish, distribute,
9sublicense, and/or sell copies of the Software, subject to the following conditions:
10
11 1. **Origin Attribution**:
12 - You must not misrepresent the origin of the Software; you must not claim
13 you created the original Software.
14 - If the Software is used in a product, you must either:
15 a. Provide clear attribution in the product's documentation, user interface,
16 or other visible areas, **OR**
17 b. Pay the original developers a fee they specify in writing.
18 2. **Usage Restriction**:
19 - The Software, or any derivative works, dependencies, or libraries
20 incorporating it, must not be used for censorship or to suppress freedom of
21 speech, expression, or creativity. Prohibited uses include, but are not
22 limited to:
23 - Censorship of so-called "hate speech", visuals, non-mainstream opinions,
24 ideas, or objective reality.
25 - Tools or systems designed to restrict access to information or
26 artistic works.
27 3. **Notice Preservation**:
28 - This license and the above copyright notice must remain intact in all copies
29 of the source code.
30
31THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
32INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
33PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
34HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
35CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
36OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
37 */
38namespace Std\Lib\Fedi;
39
40/**
41 * ローカルの投稿の保存（data/ap/notes/{ID}.json）
42 */
43final class Notes {
44 public static function path(string $id): string {
45 return Fedi::path("notes/{$id}.json");
46 }
47
48 public static function get(string $id): ?array {
49 if (!preg_match('/^[0-9a-f]{20}$/', $id)) return null;
50 return Fedi::read(self::path($id), null);
51 }
52
53 public static function save(array $note): bool {
54 return Fedi::write(self::path($note['id']), $note);
55 }
56
57 /**
58 * 投稿をロックして変更する
59 *
60 * @return array|null 変更後の投稿、無ければnull
61 */
62 public static function modify(string $id, callable $fn): ?array {
63 if (self::get($id) === null) return null;
64 return Fedi::update(self::path($id), fn($n) => $n ? $fn($n) : $n, null);
65 }
66
67 public static function delete(string $id): void {
68 @unlink(self::path($id));
69 }
70
71 /** 投稿のURL（オブジェクトのID） */
72 public static function url(array $note): string {
73 return Fedi::noteUrl($note['author'], $note['id']);
74 }
75
76 /** 投稿のページ（HTML） */
77 public static function htmlUrl(string $objectId): string {
78 return Fedi::base().'/microblog/note?id='.rawurlencode($objectId);
79 }
80
81 /**
82 * ActivityPubのNote
83 */
84 public static function toObject(array $note): array {
85 $url = self::url($note);
86 $obj = [
87 '@context' => Fedi::CONTEXT,
88 'id' => $url,
89 'type' => 'Note',
90 'attributedTo' => Fedi::actorUrl($note['author']),
91 'content' => $note['content'],
92 'source' => ['content' => $note['source'], 'mediaType' => 'text/markdown'],
93 'to' => $note['to'],
94 'cc' => $note['cc'],
95 'published' => $note['published'],
96 'url' => self::htmlUrl($url),
97 'sensitive' => (bool)$note['sensitive'],
98 'tag' => $note['tags'],
99 // 「path」は削除用の内部の項目なので外す
100 'attachment' => array_map(fn($a) => array_diff_key($a, ['path' => 1]), $note['attachments']),
101 'replies' => [
102 'id' => "{$url}/replies",
103 'type' => 'Collection',
104 'totalItems' => count($note['replies'] ?? []),
105 ],
106 'likes' => ['id' => "{$url}/likes", 'type' => 'Collection', 'totalItems' => count($note['likes'] ?? [])],
107 'shares' => ['id' => "{$url}/shares", 'type' => 'Collection', 'totalItems' => count($note['boosts'] ?? [])],
108 ];
109 if (($note['summary'] ?? '') !== '') $obj['summary'] = $note['summary'];
110 if (!empty($note['inReplyTo'])) $obj['inReplyTo'] = $note['inReplyTo'];
111 if (!empty($note['updated'])) $obj['updated'] = $note['updated'];
112 return $obj;
113 }
114
115 /** Createアクティビティ */
116 public static function toCreate(array $note): array {
117 $obj = self::toObject($note);
118 unset($obj['@context']);
119 return [
120 '@context' => Fedi::CONTEXT,
121 'id' => self::url($note).'/activity',
122 'type' => 'Create',
123 'actor' => Fedi::actorUrl($note['author']),
124 'published' => $note['published'],
125 'to' => $note['to'],
126 'cc' => $note['cc'],
127 'object' => $obj,
128 ];
129 }
130}