feat: aqicn 显示更详细的空气污染成分

Signed-off-by: hang333 <jonathan.goh333@gmail.com>

docs/other.md

@@ -378,7 +378,21 @@ type 为 all 时，category 参数不支持 cost 和 free
 
 ### 实时 AQI
 
-<Route author="xapool" example="/aqicn/beijing" path="/aqicn/:city" :paramsDesc="['城市拼音或地区 ID，详见[aqicn.org](http://aqicn.org/city/)']"/>
+<Route author="xapool" example="/aqicn/beijing/pm25,pm10" path="/aqicn/:city/:pollution?" :paramsDesc="['城市拼音或地区 ID，详见[aqicn.org](http://aqicn.org/city/)', '可选择显示更详细的空气污染成分']"/>
+
+|   参数   | 污染成分 |
+| -------- | -------- |
+|   pm25   |  PM2.5   |
+|   pm10   |  PM10    |
+|   o3     |  O3      |
+|   no2    |  NO2     |
+|   so2    |  SO2     |
+|   co     |  CO      |
+
+举例: [https://rsshub.app/aqicn/beijing/pm25,pm10](https://rsshub.app/aqicn/beijing/pm25.pm10)
+
+1. 显示单个污染成分，例如「pm25」, [https://rsshub.app/aqicn/beijing/pm25](https://rsshub.app/aqicn/beijing/pm25)
+2. 逗号分隔显示多个污染成分，例如「pm25,pm10」，[https://rsshub.app/aqicn/beijing/pm25,pm10](https://rsshub.app/aqicn/beijing/pm25.pm10)
 
 ## 酷安
 

lib/router.js

@@ -1711,7 +1711,7 @@ router.get('/aeon/:cid', require('./routes/aeon/category'));
 router.get('/algocasts', require('./routes/algocasts/all'));
 
 // aqicn
-router.get('/aqicn/:city', require('./routes/aqicn/index'));
+router.get('/aqicn/:city/:pollution?', require('./routes/aqicn/index'));
 
 // 猫眼电影
 router.get('/maoyan/hot', require('./routes/maoyan/hot'));

lib/routes/aqicn/index.js

@@ -2,6 +2,15 @@ const got = require('@/utils/got');
 
 module.exports = async (ctx) => {
     const city = ctx.params.city;
+    const pollution = ctx.params.pollution || [];
+    const pollutionType = {
+        so2: 'so2',
+        no2: 'no2',
+        co: 'co',
+        o3: 'O3',
+        pm25: 'PM2.5',
+        pm10: 'PM10',
+    };
     const area = isNaN(city) ? city : `@${city}`;
 
     const response = await got({
@@ -10,6 +19,16 @@ module.exports = async (ctx) => {
     });
     const data = response.data;
 
+    const pollutionDetailed =
+        pollution.length === 0
+            ? ''
+            : pollution.split(',').reduce((result, item) => {
+                  result += `${pollutionType[item].toUpperCase()}:<b>${
+                      typeof data.historic[pollutionType[item]] === 'object' ? data.historic[pollutionType[item]][Object.keys(data.historic[pollutionType[item]])[0]] : data.historic[pollutionType[item]][0]
+                  }</b><br>`;
+                  return result;
+              }, '');
+
     ctx.state.data = {
         title: `${data.namena}AQI`,
         link: `https://aqicn.org/city/${data.ids.path}`,
@@ -17,7 +36,7 @@ module.exports = async (ctx) => {
         item: [
             {
                 title: `${data.namena}实时空气质量(AQI)${data.utimecn}`,
-                description: `${data.infocn}<br>风力:<b>${data.cwind[0]}</b>级<br>AQI:<b>${data.aqi}</b><br><img src="${data.wgt}">`,
+                description: `${data.infocn}<br>风力:<b>${data.cwind[0]}</b>级<br>AQI:<b>${data.aqi}</b><br>${pollutionDetailed}<img src="${data.wgt}">`,
                 pubDate: new Date(data.time * 1000).toUTCString(),
                 guid: data.time,
                 link: `https://aqicn.org/city/${data.ids.path}`,