weatheralarm换源 (#708)

* 气象预警的信息源切换为中央气象台

docs/README.md

@@ -2384,11 +2384,11 @@ type, 分类, 缺省为中港台
 
 参数: 无
 
-### 中国气象网 全国气象预警 <Author uid="ylc395"/>
+### 中央气象台 全国气象预警 <Author uid="ylc395"/>
 
-举例: <https://rsshub.app/weatherAlarm>
+举例: <https://rsshub.app/weatheralarm>
 
-路由: `/weatherAlarm`
+路由: `/weatheralarm`
 
 参数: 无（提示: 可以使用全局过滤参数订阅您感兴趣的地区的信息）
 

router.js

@@ -457,7 +457,7 @@ router.get('/novel/wenxuemi/:id1/:id2', require('./routes/novel/wenxuemi'));
 router.get('/novel/booksky/:id', require('./routes/novel/booksky'));
 
 // 中国气象网
-router.get('/weatherAlarm', require('./routes/weatherAlarm'));
+router.get('/weatheralarm', require('./routes/weatheralarm'));
 
 // Gitlab
 router.get('/gitlab/explore/:type', require('./routes/gitlab/explore'));

routes/weatherAlarm/gradeMapping.json

@@ -1,7 +0,0 @@
-{
-    "01": "蓝色",
-    "02": "黄色",
-    "03": "橙色",
-    "04": "红色",
-    "05": "白色"
-}

routes/weatherAlarm/index.js

@@ -1,36 +1,25 @@
 const axios = require('../../utils/axios');
 const DateTime = require('luxon').DateTime;
-
-// 映射信息复制自网页的JS代码 http://i.tq121.com.cn/j/data_alarm.js
-const gradeMap = require('./gradeMapping.json');
-const typeMap = require('./typeMapping.json');
+const cheerio = require('cheerio');
 
 module.exports = async (ctx) => {
-    const alarmInfoURL = `http://product.weather.com.cn/alarm/grepalarm_cn.php?_=${Date.now()}`;
-    const jsonString = (await axios.get(alarmInfoURL)).data.slice(14, -1);
-    const alaramData = JSON.parse(jsonString)
-        .data.map((pair) => {
-            const location = pair[0];
-            const list = pair[1].slice(0, -5).split('-');
-            const date = DateTime.fromFormat(list[1], 'yyyyMMddhhmmss');
-            const gradeCode = list[2].slice(2);
-            const typeCode = list[2].slice(0, 2);
-            return {
-                location,
-                date,
-                grade: gradeMap[gradeCode],
-                type: typeMap[typeCode],
-                link: `http://www.weather.com.cn/alarm/newalarmcontent.shtml?file=${pair[1]}`,
-            };
-        })
-        .slice(0, 30); // 取最新的30条数据
+    const alarmInfoURL = `http://www.nmc.cn/f/alarm.html`;
+    const html = (await axios.get(alarmInfoURL)).data;
+    const $ = cheerio.load(html);
+    const alarmElements = $('.alarmlist > div:not(.pagination)').toArray();
+
     ctx.state.data = {
-        title: '中国天气网气象预警',
-        link: 'http://www.weather.com.cn/alarm/',
-        item: alaramData.map((item) => ({
-            title: `${item.location}${item.date.toFormat('M月dd日HH时mm分')}发布${item.grade}${item.type}预警`,
-            link: item.link,
-            pubDate: item.date.toRFC2822(),
-        })),
+        title: '中央气象台全国气象预警',
+        link: alarmInfoURL,
+        item: alarmElements.map((el) => {
+            const $aEl = $(el).find('a');
+            const link = $aEl.attr('href');
+            const dateString = link.match(/_(\d{14})\.html/)[1];
+            return {
+                title: $aEl.text(),
+                link: `http://www.nmc.cn${link}`,
+                pubDate: DateTime.fromFormat(dateString, 'yyyyMMddhhmmss', {zone: 'utc+8'}).toRFC2822(),
+            };
+        }),
     };
 };

routes/weatherAlarm/typeMapping.json

@@ -1,47 +0,0 @@
-{
-    "01": "台风",
-    "02": "暴雨",
-    "03": "暴雪",
-    "04": "寒潮",
-    "05": "大风",
-    "06": "沙尘暴",
-    "07": "高温",
-    "08": "干旱",
-    "09": "雷电",
-    "10": "冰雹",
-    "11": "霜冻",
-    "12": "大雾",
-    "13": "霾",
-    "14": "道路结冰",
-    "91": "寒冷",
-    "92": "灰霾",
-    "93": "雷雨大风",
-    "94": "森林火险",
-    "95": "降温",
-    "96": "道路冰雪",
-    "97": "干热风",
-    "98": "空气重污染",
-    "99": "低温",
-    "51": "海上大雾",
-    "52": "雷暴大风",
-    "53": "持续低温",
-    "54": "浓浮尘",
-    "55": "龙卷风",
-    "56": "低温冻害",
-    "57": "海上大风",
-    "58": "低温雨雪冰冻",
-    "59": "强对流",
-    "60": "臭氧",
-    "61": "大雪",
-    "62": "强降雨",
-    "63": "强降温",
-    "64": "雪灾",
-    "65": "森林（草原）火险",
-    "66": "雷暴",
-    "67": "严寒",
-    "68": "沙尘",
-    "69": "海上雷雨大风",
-    "70": "海上雷电",
-    "71": "海上台风",
-    "72": "低温"
-}