添加 机核网 RSS (#358)

* 添加 机核网 RSS

* 机核网 RSS 改用 Promise.all 请求

README.md

@@ -175,6 +175,8 @@ RSSHub 是一个轻量、易于扩展的 RSS 生成器，可以给任何奇奇
     -   分区帖子
 -   科技星球
     -   首页
+-   机核网
+    -   分类
 
 ## 鸣谢
 

docs/README.md

@@ -1447,3 +1447,17 @@ id, 专辑 id, 可在对应专辑页面的 URL 中找到
 | 全部 | 学院通知 | 人事通知 | 教务通知 | 学工通知 | 科研通知 | 财务通知 | 工会通知 | 院友通知 |
 | ---- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
 | 0    | 1        | 2        | 6        | 8        | 7        | 5        | 3        | 4        |
+
+## 机核网
+
+### 分类
+
+举例: [https://rsshub.app/gcores/category/1](https://rsshub.app/gcores/category/1)
+
+路由: `/gcores/category/:category`
+
+参数: category，分类名
+
+| 文章 | 新闻 | 电台 |
+| ---- | ---- | ---- |
+| 1    | 2    | 9    |

router.js

@@ -338,4 +338,7 @@ router.get('/kejixingqiu/home', require('./routes/kejixingqiu/home'));
 // PKUEECS
 router.get('/pku/eecs/:type?', require('./routes/pku/eecs'));
 
+// 机核
+router.get('/gcores/category/:category', require('./routes/gcores/category'));
+
 module.exports = router;

routes/gcores/category.js

@@ -0,0 +1,80 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+const config = require('../../config');
+
+const sourceTimezoneOffset = -8;
+module.exports = async (ctx) => {
+    const category = ctx.params.category;
+    const url = `https://www.g-cores.com/categories/${category}/originals`;
+    const res = await axios({
+        method: 'get',
+        url: url,
+        headers: {
+            'User-Agent': config.ua,
+        },
+    });
+    const data = res.data;
+    let $ = cheerio.load(data);
+    const list = $('.row .showcase');
+    const count = [];
+    const feedTitle = $('title')
+        .text()
+        .split('_')[0];
+
+    for (let i = 0; i < Math.min(list.length, 10); i++) {
+        count.push(i);
+    }
+    const out = await Promise.all(
+        count.map(async (i) => {
+            const item = list[i];
+            const itemUrl = $(item)
+                .find('h4 a')
+                .attr('href');
+            const cache = await ctx.cache.get(itemUrl);
+            if (cache) {
+                return Promise.resolve(JSON.parse(cache));
+            }
+            const title = $(item)
+                .find('h4 a')
+                .text();
+            let itemRes;
+            try {
+                itemRes = await axios({
+                    method: 'get',
+                    url: itemUrl,
+                    headers: {
+                        'User-Agent': config.ua,
+                    },
+                });
+            } catch (e) {
+                return Promise.resolve();
+            }
+            const itemPage = itemRes.data;
+            $ = cheerio.load(itemPage);
+            const content = $('.story').html();
+            const pageInfo = $('.story_info').text();
+            let regex = /\d{4}-\d{2}-\d{2} \d{2}:\d{2}/;
+            let regRes = regex.exec(pageInfo);
+            if (!regRes) {
+                regex = /\d{4}-\d{2}-\d{2}/;
+                regRes = regex.exec(pageInfo);
+            }
+            const time = regRes === null ? new Date() : new Date(regRes[0]);
+            time.setTime(time.getTime() + (sourceTimezoneOffset - time.getTimezoneOffset() / 60) * 60 * 60 * 1000);
+            const single = {
+                title: title,
+                description: content,
+                pubDate: time.toUTCString(),
+                link: itemUrl,
+                guid: itemUrl,
+            };
+            ctx.cache.set(itemUrl, JSON.stringify(single), 24 * 60 * 60);
+            return Promise.resolve(single);
+        })
+    );
+    ctx.state.data = {
+        title: feedTitle,
+        link: url,
+        item: out,
+    };
+};