feat: 增加 Dcard 板块支持 (#1655)

close #1614

docs/README.md

@@ -636,7 +636,9 @@ RSSHub 提供下列 API 接口:
 
 ### Dcard
 
-<route name="帖子" author="DIYgod" example="/dcard/posts/popular" path="/dcard/posts/:type?" :paramsDesc="['排序，popular 熱門；latest 最新，默認為 latest']"/>
+<route name="首頁帖子" author="DIYgod" example="/dcard/posts/popular" path="/dcard/posts/:type?" :paramsDesc="['排序，popular 熱門；latest 最新，默認為 latest']"/>
+
+<route name="板塊帖子" author="HenryQW" example="/dcard/funny/popular" path="/dcard/:section/:type?" :paramsDesc="['板塊名稱，URL 中獲得', '排序，popular 熱門；latest 最新，默認為 latest']"/>
 
 ## 编程
 

lib/router.js

@@ -1099,7 +1099,7 @@ router.get('/ui-cn/article', require('./routes/ui-cn/article'));
 router.get('/ui-cn/user/:id', require('./routes/ui-cn/user'));
 
 // Dcard
-router.get('/dcard/posts/:type?', require('./routes/dcard/posts'));
+router.get('/dcard/:section/:type?', require('./routes/dcard/section'));
 
 // 12306
 router.get('/12306/zxdt/:id?', require('./routes/12306/zxdt'));

lib/routes/dcard/posts.js

@@ -1,23 +0,0 @@
-const axios = require('../../utils/axios');
-const utils = require('./utils');
-
-module.exports = async (ctx) => {
-    const type = ctx.params.type || 'latest';
-
-    const response = await axios({
-        method: 'get',
-        url: `https://www.dcard.tw/_api/posts?popular=${type === 'popular' ? 'true' : 'false'}&limit=30`,
-        headers: {
-            Referer: `https://www.dcard.tw/f?latest=${type === 'popular' ? 'false' : 'true'}`,
-        },
-    });
-
-    const data = response.data;
-
-    ctx.state.data = {
-        title: `Dcard ${type === 'popular' ? '熱門' : '最新'}`,
-        link: 'https://www.dcard.tw',
-        description: '不想錯過任何有趣的話題嗎？趕快加入我們吧！',
-        item: await utils.ProcessFeed(data, ctx.cache),
-    };
-};

lib/routes/dcard/section.js

@@ -0,0 +1,49 @@
+const axios = require('../../utils/axios');
+const utils = require('./utils');
+
+module.exports = async (ctx) => {
+    const { type, section = 'posts' } = ctx.params;
+
+    let link = `https://www.dcard.tw/f`;
+
+    let api = `https://www.dcard.tw/_api`;
+
+    let title = `Dcard - `;
+
+    if (section !== 'posts' && section !== 'popular' && section !== 'latest') {
+        link += `/${section}`;
+        api += `/forums/${section}`;
+        title += `${section} - `;
+    }
+
+    api += `/posts`;
+
+    if (type === 'popular') {
+        link += '?latest=false';
+        api += '?popular=true';
+        title += '熱門';
+    } else if (type === 'posts' || !type) {
+        link += '?latest=true';
+        api += '?popular=false';
+        title += '最新';
+    }
+
+    const response = await axios({
+        method: 'get',
+        url: `${api}&limit=30`,
+        headers: {
+            Referer: link,
+        },
+    });
+
+    const data = response.data;
+
+    const items = await utils.ProcessFeed(data, ctx.cache);
+
+    ctx.state.data = {
+        title,
+        link,
+        description: '不想錯過任何有趣的話題嗎？趕快加入我們吧！',
+        item: items,
+    };
+};

lib/routes/dcard/utils.js

@@ -1,34 +1,49 @@
 const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
 
-module.exports = {
-    ProcessFeed: async (list, cache) => {
-        const result = await Promise.all(
-            list.map(async (item) => {
-                const link = `https://www.dcard.tw/f/funny/p/${item.id}-${encodeURIComponent(item.title)}`;
+const ProcessFeed = async (list, cache) => {
+    const result = await Promise.all(
+        list.map(async (item) => {
+            const link = `https://www.dcard.tw/f/${item.forumAlias}/p/${item.id}`;
 
-                const content = await cache.tryGet(`dcard${item.id}`, async () => {
-                    const response = await axios({
+            const content = await cache.tryGet(`dcard${item.id}`, async () => {
+                let response;
+
+                // try catch 处理被删除的帖子
+
+                try {
+                    response = await axios({
                         method: 'get',
-                        url: `https://www.dcard.tw/_api/posts/${item.id}`,
+                        url: link,
                         headers: {
-                            Referer: link,
+                            Referer: 'https://www.dcard.tw/f',
                         },
                     });
-                    return response.data.content.replace(/(https?:\/\/i\.imgur\.com\/(.*?)\.(jpg|png))/g, (match, p1) => `<img src="${p1}">`).replace(/(\r\n|\r|\n)+/g, '<br>');
-                });
 
-                const single = {
-                    title: item.title,
-                    link: link,
-                    description: content,
-                    author: item.school || '匿名',
-                    guid: item.id,
-                };
+                    const $ = cheerio.load(response.data);
 
-                return Promise.resolve(single);
-            })
-        );
+                    return $('.Post_content_NKEl9d > div:nth-child(1)').html();
+                } catch (error) {
+                    return '';
+                }
+            });
 
-        return result;
-    },
+            const single = {
+                title: `「${item.forumName}」${item.title}`,
+                link,
+                description: content,
+                author: item.school || '匿名',
+                pubDate: item.createdAt,
+                guid: item.id,
+            };
+
+            return Promise.resolve(single);
+        })
+    );
+
+    return result.filter((f) => f.description);
+};
+
+module.exports = {
+    ProcessFeed,
 };