feat: add rss of scala blog (#3768)

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();
+};