Add: the-economist gre (#2043)

* Add /the-economist/gre-vocabulary

* 原来有接口 = =

* 忘了写文档 = =

docs/traditional-media.md

@@ -213,3 +213,7 @@ category 对应的关键词有
 ## 21 财经
 
 <Route name="频道" author="brilon" example="/21caijing/channel/readnumber" path="/21caijing/channel/:name" :paramsDesc="['频道名称，可在[https://m.21jingji.com/](https://m.21jingji.com/)页面URL中找到']"/>
+
+## The Economist
+
+ <Route name="GRE Vocabulary" author="xyqfer" example="/the-economist/gre-vocabulary" path="/the-economist/gre-vocabulary" />

lib/router.js

@@ -1306,4 +1306,7 @@ router.get('/saraba1st/thread/:tid', require('./routes/saraba1st/thread'));
 router.get('/gradcafe/result/:type', require('./routes/gradcafe/result'));
 router.get('/gradcafe/result', require('./routes/gradcafe/result'));
 
+// The Economist
+router.get('/the-economist/gre-vocabulary', require('./routes/the-economist/gre-vocabulary'));
+
 module.exports = router;

lib/routes/the-economist/gre-vocabulary.js

@@ -0,0 +1,27 @@
+const axios = require('../../utils/axios');
+
+module.exports = async (ctx) => {
+    const response = await axios({
+        method: 'get',
+        url: 'https://gre.economist.com/api/gre-vocabulary.json',
+    });
+
+    const wordInfo = response.data[0];
+    const time = wordInfo.publishedDate;
+
+    ctx.state.data = {
+        title: 'The Economist GRE Vocabulary',
+        link: 'https://gre.economist.com/gre-vocabulary',
+        item: [
+            {
+                title: `${wordInfo.word} - ${time}`,
+                description: `
+                    <img referrerpolicy="no-referrer" src="${wordInfo.image.url}"><br>
+                    Source: <a href="${wordInfo.sourceUrl}">${wordInfo.sourceTitle}</a>
+                `,
+                pubDate: new Date(time).toUTCString(),
+                link: wordInfo.url,
+            },
+        ],
+    };
+};