add 半月谈 (#1799)

docs/README.md

@@ -3227,3 +3227,7 @@ type 为 all 时，category 参数不支持 cost 和 free
 <route name="观点" author="LogicJake"  example="/people/opinion/223228" path="/people/opinion/:id" :paramsDesc="['板块id，可在 URL 中找到']"/>
 
 </route>
+
+### 半月谈
+
+<route name="板块" author="LogicJake" example="/banyuetan/jicengzhili" path="/banyuetan/:name" :paramsDesc="['板块名称，可在 URL 中找到']"/>

lib/router.js

@@ -1174,6 +1174,9 @@ router.get('/zjgsu/tzgg', require('./routes/universities/zjgsu/tzgg/scripts'));
 router.get('/zjgsu/gsgg', require('./routes/universities/zjgsu/gsgg/scripts'));
 router.get('/zjgsu/xszq', require('./routes/universities/zjgsu/xszq/scripts'));
 
+// 半月谈
+router.get('/banyuetan/:name', require('./routes/banyuetan'));
+
 // 人民日报
 router.get('/people/opinion/:id', require('./routes/people/opinion'));
 

lib/routes/banyuetan/index.js

@@ -0,0 +1,64 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const name = ctx.params.name;
+
+    const link = `http://www.banyuetan.org/byt/${name}/index.html`;
+    const response = await axios.get(link);
+
+    const $ = cheerio.load(response.data);
+
+    const list = $('ul.clearFix li')
+        .slice(0, 10)
+        .map(function() {
+            const info = {
+                title: $(this)
+                    .find('h3 a')
+                    .text(),
+                link: $(this)
+                    .find('h3 a')
+                    .attr('href'),
+                date: $(this)
+                    .find('span.tag3')
+                    .text(),
+            };
+            return info;
+        })
+        .get();
+
+    const out = await Promise.all(
+        list.map(async (info) => {
+            const title = info.title;
+            const date = info.date;
+            const itemUrl = info.link;
+
+            const cache = await ctx.cache.get(itemUrl);
+            if (cache) {
+                return Promise.resolve(JSON.parse(cache));
+            }
+
+            const response = await axios.get(itemUrl);
+
+            const $ = cheerio.load(response.data);
+            const description = $('div.detail_content')
+                .html()
+                .trim();
+
+            const single = {
+                title: title,
+                link: itemUrl,
+                description: description,
+                pubDate: new Date(date).toUTCString(),
+            };
+            ctx.cache.set(itemUrl, JSON.stringify(single), 24 * 60 * 60);
+            return Promise.resolve(single);
+        })
+    );
+
+    ctx.state.data = {
+        title: `${name}-半月谈`,
+        link: link,
+        item: out,
+    };
+};