Show fulltext description for Sspai Matrix (#1450)

lib/routes/sspai/matrix.js

@@ -1,4 +1,5 @@
 const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
 
 module.exports = async (ctx) => {
     const api_url = 'https://sspai.com/api/v1/articles?offset=0&limit=20&is_matrix=1&sort=matrix_at&include_total=false';
@@ -7,17 +8,37 @@ module.exports = async (ctx) => {
         url: api_url,
     });
     const data = resp.data.list;
+    const items = await Promise.all(
+        data.map(async (item) => {
+            const link = `https://sspai.com/post/${item.id}`;
+            let description = '';
+
+            const key = `sspai: ${item.id}`;
+            const value = await ctx.cache.get(key);
+
+            if (value) {
+                description = value;
+            } else {
+                const response = await axios({ method: 'get', url: link });
+                const $ = cheerio.load(response.data);
+                description = $('#article-content > div').html();
+                ctx.cache.set(key, description, 24 * 60 * 60);
+            }
+
+            return {
+                title: item.title.trim(),
+                description: description,
+                link: link,
+                pubDate: new Date(item.released_at * 1000).toUTCString(),
+                author: item.author.nickname,
+            };
+        })
+    );
 
     ctx.state.data = {
         title: '少数派 -- Matrix',
         link: 'https://sspai.com/matrix',
         description: '少数派 -- Matrix',
-        item: data.map((item) => ({
-            title: item.title.trim(),
-            description: item.summary.trim(),
-            link: `https://sspai.com/post/${item.id}`,
-            pubDate: new Date(item.released_at * 1000).toUTCString(),
-            author: item.author.nickname,
-        })),
+        item: items,
     };
 };