Add: twitter likes (#1404)

Closes #1402

docs/README.md

@@ -505,6 +505,8 @@ RSSHub 提供下列 API 接口:
 
 <route name="列表" author="xyqfer" example="/twitter/list/ladyleet/javascript" path="/twitter/list/:id/:name" :paramsDesc="['用户 twitter 名', 'list 名称']"/>
 
+<route name="Likes" author="xyqfer" example="/twitter/likes/DIYgod" path="/twitter/likes/:id" :paramsDesc="['用户 twitter 名']"/>
+
 ### Instagram
 
 <route name="用户" author="DIYgod" example="/instagram/user/diygod" path="/instagram/user/:id" :paramsDesc="['用户 id']"/>

lib/router.js

@@ -238,6 +238,7 @@ if (config.disqus && config.disqus.api_key) {
 if (config.twitter && config.twitter.consumer_key && config.twitter.consumer_secret && config.twitter.access_token && config.twitter.access_token_secret) {
     router.get('/twitter/user/:id', require('./routes/twitter/user'));
     router.get('/twitter/list/:id/:name', require('./routes/twitter/list'));
+    router.get('/twitter/likes/:id', require('./routes/twitter/likes'));
 } else {
     logger.warn('Twitter RSS is disabled for lacking config.');
 }

lib/routes/twitter/likes.js

@@ -0,0 +1,22 @@
+const Twit = require('twit');
+const config = require('../../config');
+const utils = require('./utils');
+
+const T = new Twit(config.twitter);
+
+module.exports = async (ctx) => {
+    const id = ctx.params.id;
+    const result = await T.get('favorites/list', {
+        screen_name: id,
+        tweet_mode: 'extended',
+    });
+    const data = result.data;
+
+    ctx.state.data = {
+        title: `Twitter Likes - ${id}`,
+        link: `https://twitter.com/${id}/likes`,
+        item: utils.ProcessFeed({
+            data,
+        }),
+    };
+};