Enhancement: 央视新闻全文输出 (#971)

- 实现 #933 - 央视新闻

routes/cctv/category.js

@@ -9,7 +9,7 @@ module.exports = async (ctx) => {
     } else {
         // 央视新闻
         const getNews = require('./utils/news');
-        responseData = await getNews(category);
+        responseData = await getNews(category, ctx);
     }
 
     ctx.state.data = responseData;

routes/cctv/utils/news.js

@@ -1,6 +1,7 @@
 const axios = require('../../../utils/axios');
+const path = require('path');
 
-module.exports = async (category) => {
+module.exports = async (category, ctx) => {
     const url = `http://news.cctv.com/${category}/data/index.json`;
 
     const response = await axios({
@@ -13,16 +14,80 @@ module.exports = async (category) => {
 
     const data = response.data;
     const list = data.rollData;
+    const resultItem = await Promise.all(
+        list.map(async ({ title, url, dateTime }) => {
+            const item = {
+                title,
+                link: url,
+                pubDate: new Date(dateTime).toUTCString(),
+            };
+            const key = `cctv-news: ${url}`;
+            const value = await ctx.cache.get(key);
+
+            if (value) {
+                item.description = value;
+            } else {
+                const id = path.parse(url).name;
+                const unknownTip = '未知类型，请点击<a href="https://github.com/DIYgod/RSSHub/issues">链接</a>提交issue';
+                let description;
+                let api;
+                let type;
+
+                if (id.startsWith('ART')) {
+                    // 普通新闻
+                    api = `http://api.cntv.cn/Article/getXinwenNextArticleInfo?serviceId=sjnews&id=${id}&t=json`;
+                    type = 'ART';
+                } else if (id.startsWith('PHO')) {
+                    // 图片
+                    api = `http://api.cntv.cn/Article/contentinfo?id=${id}&serviceId=sjnews&t=json`;
+                    type = 'PHO';
+                } else {
+                    // 未识别
+                    description = unknownTip;
+                }
+
+                if (api) {
+                    const { data } = await axios({
+                        method: 'get',
+                        url: api,
+                        headers: {
+                            'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1',
+                        },
+                    });
+
+                    switch (type) {
+                        case 'ART':
+                            description = data.article_content;
+                            break;
+
+                        case 'PHO':
+                            description = data.photo_album_list.reduce((description, { photo_url, photo_name, photo_brief }) => {
+                                description += `
+                                    <img src=${photo_url} referrerpolicy="no-referrer" /><br>
+                                    <strong>${photo_name}</strong><br>
+                                    ${photo_brief}<br>
+                                `;
+                                return description;
+                            }, '');
+                            break;
+
+                        default:
+                            description = unknownTip;
+                    }
+                }
+
+                item.description = description;
+                ctx.cache.set(key, item.description, 24 * 60 * 60);
+            }
+
+            return item;
+        })
+    );
 
     return {
         title: `央视新闻 ${category}`,
         link: `http://news.cctv.com/${category}`,
         description: `央视新闻 ${category}`,
-        item: list.map((item) => ({
-            title: item.title,
-            description: item.description,
-            link: item.url,
-            pubDate: new Date(item.dateTime).toUTCString(),
-        })),
+        item: resultItem,
     };
 };