feat(route): add RSS3 Blog (#7566)

Co-authored-by: DIYgod <diy.d.god@gmail.com>

docs/en/new-media.md

@@ -372,6 +372,12 @@ Compared to the official one, this feed:
 
 </RouteEn>
 
+## RSS3
+
+### Blog
+
+<RouteEn author="nczitzk" example="/rss3/blog" path="/rss3/blog"/>
+
 ## Research Gate
 
 ### Publications

docs/new-media.md

@@ -713,6 +713,12 @@ IPFS 网关有可能失效，那时候换成其他网关。
 
 </Route>
 
+## RSS3
+
+### Blog
+
+<Route author="nczitzk" example="/rss3/blog" path="/rss3/blog"/>
+
 ## Research Gate
 
 ### Publications

lib/router.js

@@ -4218,4 +4218,7 @@ router.get('/researchgate/publications/:id', require('./routes/researchgate/publ
 // QuestMobile
 router.get('/questmobile/report/:category?/:label?', require('./routes/questmobile/report'));
 
+// RSS3
+router.get('/rss3/blog', require('./routes/rss3/blog'));
+
 module.exports = router;

lib/routes/rss3/blog.js

@@ -0,0 +1,47 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const rootUrl = 'https://blog.rss3.io';
+    const response = await got({
+        method: 'get',
+        url: rootUrl,
+    });
+
+    const $ = cheerio.load(response.data);
+
+    const list = $('h1 a')
+        .slice(0, 15)
+        .map((_, item) => {
+            item = $(item);
+            return {
+                title: item.text(),
+                link: `${rootUrl}${item.attr('href')}`,
+            };
+        })
+        .get();
+
+    const items = await Promise.all(
+        list.map(
+            async (item) =>
+                await ctx.cache.tryGet(item.link, async () => {
+                    const detailResponse = await got({
+                        method: 'get',
+                        url: item.link,
+                    });
+                    const content = cheerio.load(detailResponse.data);
+
+                    item.description = content('.post-content').html();
+                    item.pubDate = Date.parse(content('small time').attr('datetime'));
+
+                    return item;
+                })
+        )
+    );
+
+    ctx.state.data = {
+        title: 'Blog - RSS3',
+        link: rootUrl,
+        item: items,
+    };
+};