feat: add RF技术社区文章 (#4749)

docs/bbs.md

@@ -118,6 +118,12 @@ pageClass: routes
 
 <Route author="xyqfer" example="/nga/post/18449558" path="/nga/post/:tid"  :paramsDesc="['帖子 id, 可在帖子 URL 找到']" radar="1"/>
 
+## RF 技术社区
+
+### 文章
+
+<Route author="nczitzk" example="/rf/article" path="/rf/article"/>
+
 ## Ruby China
 
 > 未登录状态下抓取页面非实时更新

lib/router.js

@@ -2665,6 +2665,9 @@ router.get('/qingting/channel/:id', require('./routes/qingting/channel'));
 // 金色财经
 router.get('/jinse/lives', require('./routes/jinse/lives'));
 
+// RF技术社区
+router.get('/rf/article', require('./routes/rf/article'));
+
 // University of Massachusetts Amherst
 router.get('/umass/amherst/ecenews', require('./routes/umass/amherst/ecenews'));
 router.get('/umass/amherst/csnews', require('./routes/umass/amherst/csnews'));

lib/routes/rf/article.js

@@ -0,0 +1,40 @@
+const url = require('url');
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const rootUrl = 'https://rf.eefocus.com/article/list-all';
+    const response = await got({
+        method: 'get',
+        url: rootUrl,
+    });
+    const $ = cheerio.load(response.data);
+    const list = $('h3.media-heading')
+        .slice(0, 10)
+        .map((_, item) => {
+            item = $(item);
+            const a = item.find('a');
+            return {
+                title: a.text(),
+                link: url.resolve('https://rf.eefocus.com/', a.attr('href')),
+            };
+        })
+        .get();
+
+    ctx.state.data = {
+        title: 'RF技术社区 - 文章',
+        link: rootUrl,
+        item: await Promise.all(
+            list.map(
+                async (item) =>
+                    await ctx.cache.tryGet(item.link, async () => {
+                        const res = await got({ method: 'get', url: item.link });
+                        const content = cheerio.load(res.data);
+                        item.pubDate = new Date(content('div.article-subline-desc').eq(0).text().replace('发布时间：', '')).toUTCString();
+                        item.description = content('div.clearfix.article-content').html();
+                        return item;
+                    })
+            )
+        ),
+    };
+};