增加 雪球基金净值更新 (#828)

docs/README.md

@@ -494,6 +494,8 @@ RSSHub 提供下列 API 接口:
 
 <route name="用户收藏动态" author="imlonghao" example="/xueqiu/favorite/8152922548" path="/xueqiu/favorite/:id" :paramsDesc="['用户 id, 可在用户主页 URL 中找到']"/>
 
+<route name="基金净值更新" author="HenryQW" example="/xueqiu/fund/040008" path="/xueqiu/fund/:id" :paramsDesc="['基金代码, 可在基金主页 URL 中找到. 此路由的数据为场外基金 (`F`开头)']"/>
+
 ## 编程
 
 ### 掘金

router.js

@@ -400,6 +400,7 @@ router.get('/wikipedia/mainland', require('./routes/wikipedia/mainland'));
 // 雪球
 router.get('/xueqiu/user/:id/:type?', require('./routes/xueqiu/user'));
 router.get('/xueqiu/favorite/:id', require('./routes/xueqiu/favorite'));
+router.get('/xueqiu/fund/:id', require('./routes/xueqiu/fund'));
 
 // Greasy Fork
 router.get('/greasyfork/:language/:domain?', require('./routes/greasyfork/scripts'));

routes/xueqiu/fund.js

@@ -0,0 +1,55 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const url = `https://xueqiu.com/S/F${ctx.params.id}`;
+
+    let fundName = await axios({
+        method: 'get',
+        url,
+        headers: {
+            Referer: 'https://xueqiu.com/',
+        },
+    });
+
+    const $ = cheerio.load(fundName.data);
+    fundName = $('.stock-name').text();
+
+    const response = await axios({
+        method: 'get',
+        url: `https://fund.xueqiu.com/dj/open/fund/growth/${ctx.params.id}?day=7`,
+        headers: {
+            Referer: url,
+        },
+    });
+
+    const data = response.data.data.fund_nav_growth.pop();
+
+    let description = `${fundName} 最新净值 ${data.nav} <br> 今日`;
+
+    const value = parseFloat(data.value);
+
+    if (value > 0) {
+        description += '涨幅';
+    } else if (value < 0) {
+        description += '跌幅';
+    } else if (value === 0) {
+        description += '无波动';
+    }
+
+    description += ` ${data.value} ${data.percentage}%`;
+
+    ctx.state.data = {
+        title: fundName,
+        link: url,
+        description: `${fundName} 净值更新`,
+        item: [
+            {
+                title: `${fundName} ${data.date} 净值更新`,
+                description,
+                pubDate: new Date(data.date).toUTCString(),
+                link: url,
+            },
+        ],
+    };
+};