feat: add 国家预警信息发布中心当前生效预警 (#5118)

docs/forecast.md

@@ -32,6 +32,12 @@ pageClass: routes
 
 </Route>
 
+## 国家突发事件预警信息发布网
+
+### 当前生效预警
+
+<Route author="nczitzk" example="/12379" path="/12379/index"/>
+
 ## 国家应急广播网
 
 ### 预警信息

lib/router.js

@@ -2932,4 +2932,7 @@ router.get('/gelonghui/keyword/:keyword', require('./routes/gelonghui/keyword'))
 // 光谷社区
 router.get('/guanggoo/:caty', require('./routes/guanggoo/index'));
 
+// 国家突发事件预警信息发布网
+router.get('/12379', require('./routes/12379/index'));
+
 module.exports = router;

lib/routes/12379/index.js

@@ -0,0 +1,23 @@
+const got = require('@/utils/got');
+
+module.exports = async (ctx) => {
+    const currentUrl = `http://www.12379.cn/data/index_map_all.html`;
+    const response = await got({
+        method: 'get',
+        url: currentUrl,
+    });
+    const data = JSON.parse(response.data.substr('var alertData ='.length, response.data.length + 1));
+
+    const list = data.map((item) => ({
+        title: item.headline,
+        link: `http://www.12379.cn/html/new2018/alarmcontent.shtml?file=${item.identifier}.html}`,
+        description: item.description,
+        pubDate: new Date(item.sendTime).toUTCString(),
+    }));
+
+    ctx.state.data = {
+        title: `当前生效预警 - 国家突发事件预警信息发布网`,
+        link: currentUrl,
+        item: list,
+    };
+};