feat: add rss of scala blog (#3768)

docs/en/programming.md

@@ -191,6 +191,14 @@ Website: https://news.ycombinator.com/
 
 <Route author="hellodword" example="/project-zero-issues" path="/project-zero-issues" />
 
+## Scala
+
+### Scala Blog
+
+<RouteEn author="fengkx" example="/scala/blog/posts" path="/scala/blog/:part?" :paramsDesc="['part']" >
+part parmater can be found in the url of blog
+</RouteEn>
+
 ## Visual Studio Code Marketplace
 
 ### Visual Studio Code Plugins Marketplace

docs/programming.md

@@ -264,6 +264,14 @@ GitHub 官方也提供了一些 RSS:
 
 <Route author="hellodword" example="/project-zero-issues" path="/project-zero-issues" />
 
+## Scala
+
+### Scala Blog
+
+<Route author="fengkx" example="/scala/blog/posts" path="/scala/blog/:part?" :paramsDesc="['部分']" >
+默认为All part参数可在url中获得
+</Route>
+
 ## segmentfault
 
 ### 频道

lib/router.js

@@ -2144,6 +2144,9 @@ router.get('/discuz/:link(.*)', require('./routes/discuz/discuz'));
 router.get('/chinadialogue/topics/:topic', require('./routes/chinadialogue/topics'));
 router.get('/chinadialogue/:column', require('./routes/chinadialogue/column'));
 
+// Scala Blog
+router.get('/scala/blog/:part?', require('./routes/scala-blog/scala-blog'));
+
 // Minecraft Java版游戏更新
 router.get('/minecraft/version', require('./routes/minecraft/version'));
 

lib/routes/scala-blog/scala-blog.js

@@ -0,0 +1,29 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx, next) => {
+    const part = ctx.params.part || '';
+    const link = `https://scala-lang.org/blog/${part}`;
+    const host = 'https://scala-lang.org';
+
+    const resp = await got(link);
+    const $ = cheerio.load(resp.body);
+    const items = $('.blog-item')
+        .get()
+        .map((item) => {
+            const $ = cheerio.load(item);
+            const aTag = $('a').first();
+            return {
+                title: aTag.text(),
+                link: host + aTag.attr('href'),
+                pubDate: new Date($('.blog-date').text()),
+            };
+        });
+
+    ctx.state.data = {
+        title: `Scala Blog ${part === '' ? 'all' : part} Section `,
+        link,
+        item: items,
+    };
+    await next();
+};