feat: add 2048 (#3917)

docs/multimedia.md

@@ -4,6 +4,12 @@ pageClass: routes
 
 # 音视频
 
+## 2048 核基地
+
+### 论坛更新
+
+<Route author="hoilc" example="/2048/bbs/16" path="/2048/bbs/:fid" :paramsDesc="['板块 ID, 可在 URL 中找到, 例如, `thread.php?fid-16.html`中, 板块 ID 为`16`']"/>
+
 ## 60-Second Science - Scientific American
 
 ### Transcript

lib/router.js

@@ -2219,4 +2219,7 @@ router.get('/hackerone/hacktivity', require('./routes/hackerone/hacktivity'));
 // 奶牛关
 router.get('/cowlevel/element/:id', require('./routes/cowlevel/element'));
 
+// 2048
+router.get('/2048/bbs/:fid', require('./routes/2048/bbs'));
+
 module.exports = router;

lib/routes/2048/bbs.js

@@ -0,0 +1,106 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+
+async function getAvailableHosts(ctx) {
+    const fby_url = 'https://hjd.tw/';
+    const cache_key = `2048gkd-${new Date().toLocaleDateString()}`;
+
+    const cache = await ctx.cache.get(cache_key);
+    if (cache) {
+        return JSON.parse(cache);
+    }
+
+    const response = await got.get(fby_url);
+    const $ = cheerio.load(response.data);
+    const hosts = $('ul a')
+        .map(function() {
+            return $(this).attr('href');
+        })
+        .get();
+
+    ctx.cache.set(cache_key, JSON.stringify(hosts));
+    return hosts;
+}
+
+module.exports = async (ctx) => {
+    const fid = ctx.params.fid;
+    const base_hosts = await getAvailableHosts(ctx);
+
+    const url = `${base_hosts[0]}/2048/thread.php?fid-${fid}-page-1.html`;
+
+    const list_response = await got.get(url);
+    const $ = cheerio.load(list_response.data);
+
+    const list = $('.tr3.t_one').toArray();
+    $('#breadCrumb span.fr').remove();
+    const forum_name = $('#breadCrumb')
+        .text()
+        .replace(/»/g, '-');
+
+    const parseContent = (htmlString) => {
+        const $ = cheerio.load(htmlString);
+
+        const time = $('.tiptop.cc > .fl.gray').attr('title');
+        const content = $('.tpc_content');
+
+        return {
+            description: content.html(),
+            pubDate: time ? new Date(time) : new Date(),
+        };
+    };
+
+    const out = await Promise.all(
+        list.slice(0, 30).map(async (item) => {
+            const $ = cheerio.load(item);
+
+            if (
+                !$('td > a')
+                    .first()
+                    .attr('title')
+            ) {
+                return Promise.resolve('');
+            }
+
+            if ($("img[title='置顶帖标志']").length !== 0) {
+                return Promise.resolve('');
+            }
+
+            const title = $('a.subject');
+            const author = $('a.bl');
+            const path = title.attr('href');
+
+            const key = `/2048/${path}`;
+            const link = `${base_hosts[0]}/2048/${path}`;
+
+            const cache = await ctx.cache.get(key);
+            if (cache) {
+                return Promise.resolve(JSON.parse(cache));
+            }
+
+            const rssitem = {
+                title: title.text().trim(),
+                author: author.text().trim(),
+                link: link,
+                guid: key,
+            };
+
+            try {
+                const response = await got.get(link);
+                const result = parseContent(response.data);
+
+                rssitem.description = result.description;
+                rssitem.pubDate = result.pubDate;
+            } catch (err) {
+                return Promise.resolve('');
+            }
+            ctx.cache.set(key, JSON.stringify(rssitem));
+            return Promise.resolve(rssitem);
+        })
+    );
+
+    ctx.state.data = {
+        title: forum_name,
+        link: url,
+        item: out.filter((item) => item !== ''),
+    };
+};