feat: add Hong Kong Observatory Current weather api (#1046)

docs/README.md

@@ -2177,3 +2177,7 @@ IATA 国际航空运输协会机场代码, 参见[维基百科 国际航空运
 ### 百度
 
 <route name="百度趣画" author="xyqfer" example="/baidu/doodles" path="/baidu/doodles"/>
+
+### 香港天文台
+
+<route name="Current Weather Report" author="calpa" example="/hko/weather" path="/hko/weather"/>

router.js

@@ -738,6 +738,9 @@ router.get('/geekpark/breakingnews', require('./routes/geekpark/breakingnews'));
 // 百度
 router.get('/baidu/doodles', require('./routes/baidu/doodles'));
 
+// 香港天文台
+router.get('/hko/weather', require('./routes/hko/weather'));
+
 // sankakucomplex
 router.get('/sankakucomplex/post', require('./routes/sankakucomplex/post'));
 

routes/hko/weather.js

@@ -0,0 +1,49 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const url = 'http://rss.weather.gov.hk/rss/CurrentWeather.xml';
+    const cache = ctx.cache.get(url);
+    if (cache) {
+        return Promise.parse(cache);
+    }
+
+    const { data } = await axios({ method: 'get', url });
+    const $ = cheerio.load(data, {
+        xmlMode: true,
+    });
+    const weather = $('description')
+        .slice(1, 2)
+        .text();
+
+    const $$ = cheerio.load(weather);
+    const items = [];
+    $$('table')
+        .find('td')
+        .each(function(index, element) {
+            if (index % 2) {
+                return;
+            }
+            const area = $$(element).text();
+            const degree = $$(element)
+                .next()
+                .text()
+                .split(' ')[0];
+
+            const item = {
+                title: area,
+                description: degree,
+            };
+            items.push(item);
+        });
+    const result = {
+        title: 'Current Weather Report',
+        description: ` provided by the Hong Kong Observatory: ${$('pubDate').text()}`,
+        link: url,
+        item: items,
+    };
+    // one hour cache
+    ctx.cache.set(url, JSON.stringify(result), 60 * 60);
+
+    ctx.state.data = result;
+};