From 2f8c101bcfc22d19cd3468b0f10a490e735c43c5 Mon Sep 17 00:00:00 2001
From: DIYgod <i@diygod.me>
Date: Wed, 26 Jun 2024 22:40:31 +0800
Subject: [PATCH] feat: add fediverse timeline

---
 lib/routes/fediverse/namespace.ts |  6 +++
 lib/routes/fediverse/timeline.ts  | 73 +++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 lib/routes/fediverse/namespace.ts
 create mode 100644 lib/routes/fediverse/timeline.ts

diff --git a/lib/routes/fediverse/namespace.ts b/lib/routes/fediverse/namespace.ts
new file mode 100644
index 000000000..e13a372f4
--- /dev/null
+++ b/lib/routes/fediverse/namespace.ts
@@ -0,0 +1,6 @@
+import type { Namespace } from '@/types';
+
+export const namespace: Namespace = {
+    name: 'Fediverse',
+    url: 'fediverse.observer',
+};
diff --git a/lib/routes/fediverse/timeline.ts b/lib/routes/fediverse/timeline.ts
new file mode 100644
index 000000000..dfc13c6b3
--- /dev/null
+++ b/lib/routes/fediverse/timeline.ts
@@ -0,0 +1,73 @@
+import InvalidParameterError from '@/errors/types/invalid-parameter';
+import { Route } from '@/types';
+
+import { parseDate } from '@/utils/parse-date';
+import ofetch from '@/utils/ofetch';
+
+export const route: Route = {
+    path: '/timeline/:account',
+    categories: ['social-media', 'popular'],
+    example: '/fediverse/timeline/Mastodon@mastodon.social',
+    parameters: { account: 'username@domain' },
+    features: {
+        requireConfig: false,
+        requirePuppeteer: false,
+        antiCrawler: false,
+        supportBT: false,
+        supportPodcast: false,
+        supportScihub: false,
+    },
+    name: 'Timeline',
+    maintainers: ['DIYgod'],
+    handler,
+};
+
+async function handler(ctx) {
+    const account = ctx.req.param('account');
+    const domain = account.split('@')[1];
+    const username = account.split('@')[0];
+
+    if (!domain || !username) {
+        throw new InvalidParameterError('Invalid account');
+    }
+
+    const requestOptions = {
+        headers: {
+            Accept: 'application/activity+json',
+        },
+    };
+
+    const acc = await ofetch(`https://${domain}/.well-known/webfinger?resource=acct:${account}`, requestOptions);
+
+    const jsonLink = acc.links.find((link) => link.rel === 'self')?.href;
+    const link = acc.links.find((link) => link.rel === 'http://webfinger.net/rel/profile-page')?.href;
+
+    const self = await ofetch(jsonLink, requestOptions);
+
+    const outbox = await ofetch(self.outbox, requestOptions);
+    const firstOutbox = await ofetch(outbox.first, requestOptions);
+
+    const items = firstOutbox.orderedItems;
+
+    return {
+        title: `${self.name || self.preferredUsername} (Fediverse@${account})`,
+        description: self.summary,
+        image: self.icon?.url || self.image?.url,
+        link,
+        item: items.map((item) => {
+            const object =
+                typeof item.object === 'string'
+                    ? {
+                          content: item.object,
+                      }
+                    : item.object;
+            return {
+                title: object.content,
+                description: `${object.content}\n${object.attachment?.map((attachment) => `<img src="${attachment.url}" width="${attachment.width}" height="${attachment.height}" />`).join('\n') || ''}`,
+                link: item.url,
+                pubDate: parseDate(item.published),
+                guid: item.id,
+            };
+        }),
+    };
+}