add: bilibili歌单 (#1273)

close #847

docs/README.md

@@ -319,6 +319,8 @@ RSSHub 提供下列 API 接口:
 
 <route name="话题(频道/标签)" author="Qixingchen" example="/bilibili/topic/2233" path="/bilibili/topic/2233" :paramsDesc="['话题名(又称频道名或标签) 例如 2233 或 COSPLAY']"/>
 
+<route name="歌单" author="LogicJake" example="/bilibili/audio/10624" path="/bilibili/audio/10624" :paramsDesc="['歌单 id, 可在歌单页 URL 中找到']/>
+
 ### 微博
 
 <route name="博主（方案1）" author="DIYgod" example="/weibo/user/1195230310" path="/weibo/user/:uid" :paramsDesc="['用户 id, 博主主页打开控制台执行 `$CONFIG.oid` 获取']"/>

router.js

@@ -112,6 +112,7 @@ router.get('/bilibili/mall/ip/:id', require('./routes/bilibili/mallIP'));
 router.get('/bilibili/ranking/:rid?/:day?', require('./routes/bilibili/ranking'));
 router.get('/bilibili/user/channel/:uid/:cid', require('./routes/bilibili/userChannel'));
 router.get('/bilibili/topic/:topic', require('./routes/bilibili/topic'));
+router.get('/bilibili/audio/:id', require('./routes/bilibili/audio'));
 
 // bangumi
 router.get('/bangumi/calendar/today', require('./routes/bangumi/calendar/today'));

routes/bilibili/audio.js

@@ -0,0 +1,42 @@
+const axios = require('../../utils/axios');
+
+const audio = 'https://www.bilibili.com/audio/au';
+
+module.exports = async (ctx) => {
+    const id = Number.parseInt(ctx.params.id);
+    const link = `https://www.bilibili.com/audio/am${id}`;
+
+    const apiMenuUrl = `https://www.bilibili.com/audio/music-service-c/web/menu/info?sid=${id}`;
+    const menuResponse = await axios.get(apiMenuUrl);
+    const menuData = menuResponse.data.data;
+    const introduction = menuData.intro;
+    const title = menuData.title;
+
+    const apiUrl = `https://www.bilibili.com/audio/music-service-c/web/song/of-menu?sid=${id}&pn=1&ps=100`;
+    const response = await axios.get(apiUrl);
+    const data = response.data.data.data;
+
+    const out = data.map((item) => {
+        const title = item.title;
+        const link = audio + item.statistic.sid;
+        const author = item.author;
+        const description = item.intro + `<br><img src="${item.cover}">`;
+
+        const single = {
+            title: title,
+            link: link,
+            author: author,
+            pubDate: new Date(item.passtime * 1000),
+            description: description,
+        };
+
+        return single;
+    });
+
+    ctx.state.data = {
+        title: title,
+        link: link,
+        description: introduction,
+        item: out,
+    };
+};