feat(route): add route of obsidian publish (#16872)

* feat(route): add route of obsidian publish

* feat(obsidian): Improve type safety by using DataItem in publish route

* Update lib/routes/obsidian/publish.ts

Co-authored-by: Tony <TonyRL@users.noreply.github.com>

* Update lib/routes/obsidian/publish.ts

Co-authored-by: Tony <TonyRL@users.noreply.github.com>

* feat(obsidian): improve publish page data extraction

* fix(obsidian): remove redundant namespace from route names

* Update lib/routes/obsidian/publish.ts

lib/routes/obsidian/namespace.ts

@@ -0,0 +1,6 @@
+import type { Namespace } from '@/types';
+
+export const namespace: Namespace = {
+    name: 'Obsidian',
+    url: 'obsidian.md',
+};

lib/routes/obsidian/publish.ts

@@ -0,0 +1,83 @@
+import { Route, DataItem } from '@/types';
+import { load } from 'cheerio';
+import ofetch from '@/utils/ofetch';
+import { getTitle } from './utils';
+import { config } from '@/config';
+import { parseDate } from '@/utils/parse-date';
+
+export const route: Route = {
+    path: '/publish/:id',
+    categories: ['blog'],
+    example: '/obsidian/publish/marshallontheroad',
+    parameters: { id: '网站 id，由Publish持有者自定义' },
+    features: {
+        requireConfig: false,
+        requirePuppeteer: false,
+        antiCrawler: false,
+        supportBT: false,
+        supportPodcast: false,
+        supportScihub: false,
+    },
+    radar: [
+        {
+            source: ['publish.obsidian.md/'],
+        },
+    ],
+    name: 'Publish',
+    maintainers: ['Xy2002'],
+    handler,
+    url: 'publish.obsidian.md/',
+};
+
+async function handler(ctx) {
+    const id = ctx.req.param('id');
+    const items = await fetchPage(id);
+
+    return {
+        title: 'Obsidian Publish',
+        language: 'en-us',
+        item: items,
+        link: 'https://publish.obsidian.md/',
+    };
+}
+
+async function fetchPage(id: string) {
+    const baseUrl = `https://publish.obsidian.md/${id}`;
+    const response = await ofetch(baseUrl);
+    const $ = load(response);
+    const preloadCacheUrl =
+        $('script:contains("preloadCache")')
+            .text()
+            .match(/preloadCache\s*=\s*f\("([^"]+)"\);/)?.[1] || '';
+
+    let preloadCacheResponse: Record<string, { frontmatter?: Record<string, string> }>;
+    try {
+        preloadCacheResponse = await ofetch(preloadCacheUrl, {
+            headers: {
+                'User-Agent': config.trueUA,
+                Referer: 'https://publish.obsidian.md/',
+                Origin: 'https://publish.obsidian.m/',
+            },
+        });
+    } catch {
+        preloadCacheResponse = {};
+    }
+
+    const items: DataItem[] = Object.entries(preloadCacheResponse)
+        .map(([postKey, post]) => {
+            if (!post) {
+                return null;
+            }
+            const item: DataItem = {
+                title: post.frontmatter?.title || getTitle(postKey),
+                link: `${baseUrl}/${postKey.replaceAll(' ', '+').split('.md')[0]}`,
+                pubDate: post.frontmatter?.['date created'] ? parseDate(post.frontmatter['date created']) : undefined,
+                ...post.frontmatter,
+            };
+
+            return item;
+        })
+        .filter(Boolean) as DataItem[];
+
+    return items;
+}

lib/routes/obsidian/utils.ts

@@ -0,0 +1,8 @@
+const regex = /([^/]+)\.md$/;
+
+const getTitle = (path: string): string => {
+    const match = path.match(regex);
+    return match ? match[1] : '';
+};
+
+export { getTitle };