feat: add miui update (#318)

README.md

@@ -161,6 +161,8 @@ RSSHub 是一个轻量、易于扩展的 RSS 生成器，可以给任何奇奇
     -   杭州市
     -   萧山区
     -   大连市
+-   MIUI
+    -   更新
 
 ## 鸣谢
 

docs/README.md

@@ -1317,3 +1317,23 @@ id, 专辑 id, 可在对应专辑页面的 URL 中找到
 路由: `/tingshuitz/dalian`
 
 参数: 无
+
+### MIUI 更新
+
+举例: [https://rsshub.app/miui/aries/](https://rsshub.app/miui/aries/)
+
+路由: `/miui/:device/:type?`
+
+参数
+
+**device**
+
+你的设备的 `codename` 例如 小米 2s 为 `aries`
+
+**type**
+
+可选参数
+
+| 稳定版  | 开发版 |
+| ------- | ------ |
+| release | dev    |

router.js

@@ -314,4 +314,7 @@ router.get('/tingshuitz/hangzhou', require('./routes/tingshuitz/hangzhou'));
 router.get('/tingshuitz/xiaoshan', require('./routes/tingshuitz/xiaoshan'));
 router.get('/tingshuitz/dalian', require('./routes/tingshuitz/dalian'));
 
+// MIUI 更新
+router.get('/miui/:device/:type?', require('./routes/miui/index'));
+
 module.exports = router;

routes/miui/index.js

@@ -0,0 +1,58 @@
+const axios = require('../../utils/axios');
+const config = require('../../config');
+
+const cacheLength = 5;
+const cacheDays = 30;
+
+module.exports = async (ctx) => {
+    const { type = 'release', device } = ctx.params;
+    const releaseType = type === 'release' ? 'F' : 'X';
+    const localeTypeName = type === 'release' ? '稳定版' : '开发版';
+    const cacheName = `RSSHubMIUIUpdate|${device}|${releaseType}`;
+
+    const response = await axios({
+        method: 'get',
+        baseURL: 'http://update.miui.com',
+        url: '/updates/miota-fullrom.php',
+        headers: {
+            'User-Agent': config.ua,
+        },
+        params: {
+            d: device,
+            b: releaseType,
+            r: 'cn',
+            l: 'zh_CN',
+            n: '',
+        },
+    });
+
+    const responseData = response.data;
+    let oldPosts = [];
+    try {
+        oldPosts = JSON.parse(await ctx.cache.get(cacheName));
+    } catch (_e) {
+        /** no need handle here: parseError */
+    }
+
+    let item = oldPosts;
+
+    if (oldPosts.length === 0 || oldPosts[0].description !== responseData.LatestFullRom.filename) {
+        item = [
+            {
+                title: `${device} 有新的 ${localeTypeName}本: ${responseData.LatestFullRom.version}`,
+                guid: responseData.LatestFullRom.md5,
+                description: responseData.LatestFullRom.filename,
+                link: responseData.LatestFullRom.descriptionUrl,
+            },
+            ...oldPosts,
+        ];
+
+        await ctx.cache.set(cacheName, item.slice(0, cacheLength), cacheDays * 24 * 60 * 60);
+    }
+
+    ctx.state.data = {
+        title: `MIUI 更新 - ${device} - ${type === 'release' ? '稳定版' : '开发版'}`,
+        link: 'http://www.miui.com/download.html',
+        item,
+    };
+};