feat: 柠檬电台 私房歌 (#2188)

* feat: added si-fang-ge on ningmeng.name

* fix($ningmeng): fixed post urls fetch in homepage; changed cache by key of post url

* docs($ningmeng): added doc

docs/multimedia.md

@@ -202,6 +202,12 @@ pageClass: routes
 
 <Route author="Songkeys" example="/gaoqing/latest" path="/gaoqing/latest"/>
 
+## 柠檬 私房歌 (ningmeng.name)
+
+### 私房歌
+
+<Route author="dearrrfish" example="/ningmeng/song" path="/ningmeng/song" />
+
 ## 色花堂中文论坛
 
 ### 原创 BT 电影

lib/router.js

@@ -1316,6 +1316,9 @@ router.get('/dsndsht23', require('./routes/dsndsht23/index'));
 // MaxNews - DotA 2
 router.get('/maxnews/dota2', require('./routes/maxnews/dota2'));
 
+// 柠檬 - 私房歌
+router.get('/ningmeng/song', require('./routes/ningmeng/song'));
+
 // 数英网最新文章
 router.get('/digitaling/index', require('./routes/digitaling/index'));
 

lib/routes/ningmeng/song.js

@@ -0,0 +1,77 @@
+const axios = require('@/utils/axios');
+const cheerio = require('cheerio');
+
+const sourceTimezoneOffset = -8;
+module.exports = async (ctx) => {
+    const url = 'http://www.ningmeng.name/archives/category/%E7%A7%81%E6%88%BF%E6%AD%8C';
+    const res = await axios.get(url);
+    const $$ = cheerio.load(res.data);
+    const postUrls = $$('.site-main .posts-wrapper .grid-item a.u-permalink')
+        .slice(0, 3)
+        .map((i, el) => $$(el).attr('href'))
+        .get();
+
+    const postItemGroups = await Promise.all(
+        postUrls.map(async (postUrl) => {
+            const cache = await ctx.cache.get(postUrl);
+            if (cache) {
+                return JSON.parse(cache);
+            }
+
+            const postRes = await axios.get(postUrl);
+            const $ = cheerio.load(postRes.data);
+
+            let time = $('.iconfont.icon-shijian + span.count').text();
+            time = time ? new Date(time) : new Date();
+            time.setTime(time.getTime() + (sourceTimezoneOffset - time.getTimezoneOffset() / 60) * 60 * 60 * 1000);
+            const pubDate = time.toUTCString();
+
+            const content = $('.entry-content');
+
+            const mp3s = content.find('.karma-by-kadar__simple-player');
+            const mp3Urls = mp3s.map((i, el) => $(el).attr('data-src')).get();
+
+            const images = content.find('img');
+            const imageUrls = images.map((i, el) => $(el).attr('src')).get();
+
+            const playerTextRe = /\n*play_circle_filledpause_circle_filledvolume_downvolume_upvolume_off\n*/g;
+            const songSplitterRe = /—+.+—+/g;
+            const texts = content
+                .text()
+                .replace(songSplitterRe, '')
+                .split(playerTextRe)
+                .map((p) => p.trim().split(/\n+/));
+
+            const out = mp3Urls.map((mp3Url, i) => {
+                const ss = mp3Url.split('/');
+                const filename = ss[ss.length - 1].split('.')[0];
+                const [title, artist] = filename.split('-');
+                const description = [`<img src="${imageUrls[i]}" />`, `<h4>${texts[i][0]}</h4>`, `<p>${texts[i][1]}</p>`].join();
+
+                return {
+                    title: unescape(title).trim(),
+                    author: unescape(artist).trim(),
+                    link: mp3Url,
+                    guid: mp3Url,
+                    description,
+                    pubDate,
+                };
+            });
+
+            ctx.cache.set(postUrl, JSON.stringify(out));
+
+            return out;
+        })
+    );
+
+    let items = [];
+    postItemGroups.forEach((group) => {
+        items = items.concat(group);
+    });
+
+    ctx.state.data = {
+        title: '柠檬私房歌',
+        link: 'http://www.ningmeng.name',
+        item: items,
+    };
+};