feat: add mastodon local public timeline (#3537)

docs/social-media.md

@@ -296,6 +296,12 @@ Tiny Tiny RSS 会给所有 iframe 元素添加 `sandbox="allow-scripts"` 属性
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 | 最新 | 日榜 | 周榜 | 月榜  | 总榜  |
 
+## Mastodon
+
+### 实例公共时间线
+
+<Route author="hoilc" example="/mastodon/timeline/pawoo.net/true" path="/mastodon/timeline/:site/:only_media?" :paramsDesc="['实例地址, 仅域名, 不包括`http://`或`https://`协议头', '是否只显示包含媒体（图片或视频）的推文, 默认置空为否, 任意值为是']"/>
+
 ## pixiv
 
 ### 用户收藏

lib/router.js

@@ -2023,4 +2023,7 @@ router.get('/bahamut/creation_index/:category?/:subcategory?/:type?', require('.
 // CentBrowser
 router.get('/centbrowser/history', require('./routes/centbrowser/history'));
 
+// Mastodon
+router.get('/mastodon/timeline/:site/:only_media?', require('./routes/mastodon/timeline'));
+
 module.exports = router;

lib/routes/mastodon/timeline.js

@@ -0,0 +1,49 @@
+const got = require('@/utils/got');
+
+module.exports = async (ctx) => {
+    const site = ctx.params.site;
+    const only_media = ctx.params.only_media ? 'true' : 'false';
+
+    const url = `http://${site}/api/v1/timelines/public?local=true&only_media=${only_media}`;
+
+    const response = await got.get(url);
+    const list = response.data;
+
+    const ProcessFeed = (data) =>
+        data.map((item) => {
+            const title = item.content
+                .replace(/<span.*?>|<\/span.*?>/gm, '')
+                .replace(/<(?:.|\n)*?>/gm, '\n')
+                .split('\n')
+                .filter((s) => s !== '')[0];
+
+            const media = item.media_attachments
+                .map((item) => {
+                    switch (item.type) {
+                        case 'gifv':
+                            return `<br><video src="${item.url}" autoplay loop>GIF</video>`;
+                        case 'video':
+                            return `<br><video src="${item.url}" controls loop>Video</video>`;
+                        case 'image':
+                            return `<br><img src="${item.url}">`;
+                        default:
+                            return '';
+                    }
+                })
+                .join('');
+
+            return {
+                title: title,
+                author: item.account.display_name,
+                description: item.content + media,
+                pubDate: new Date(item.created_at).toUTCString(),
+                link: item.uri,
+            };
+        });
+
+    ctx.state.data = {
+        title: `Local Public${ctx.params.only_media ? ' Media' : ''} Timeline on ${site}`,
+        link: `http://${site}`,
+        item: ProcessFeed(list),
+    };
+};