fix: Luogu blog uid (#11537)

docs/programming.md

@@ -1015,7 +1015,7 @@ GitHub 官方也提供了一些 RSS:
 
 ### 用户博客
 
-<Route author="ftiasch" example="/luogu/user/blog/ftiasch" path="/luogu/user/blog/:username" :paramsDesc="['用户名']" radar="1" rssbud="1"/>
+<Route author="ftiasch" example="/luogu/user/blog/ftiasch" path="/luogu/user/blog/:name" :paramsDesc="['博客名称']" radar="1" rssbud="1"/>
 
 ## 码农俱乐部
 

lib/v2/luogu/radar.js

@@ -23,8 +23,8 @@ module.exports = {
             {
                 title: '用户博客',
                 docs: 'https://docs.rsshub.app/programming.html#luo-gu',
-                source: ['/blog/:username'],
-                target: '/luogu/user/blog/:username',
+                source: ['/blog/:name'],
+                target: '/luogu/user/blog/:name',
             },
         ],
     },

lib/v2/luogu/router.js

@@ -2,5 +2,5 @@ module.exports = (router) => {
     router.get('/contest', require('./contest'));
     router.get('/daily/:id?', require('./daily'));
     router.get('/user/feed/:uid', require('./userFeed'));
-    router.get('/user/blog/:username', require('./userBlog'));
+    router.get('/user/blog/:name', require('./userBlog'));
 };

lib/v2/luogu/userBlog.js

@@ -2,29 +2,23 @@ const got = require('@/utils/got');
 const cheerio = require('cheerio');
 
 module.exports = async (ctx) => {
-    const username = ctx.params.username;
+    const name = ctx.params.name;
 
-    // Convert from `username` to `uid`
-    const userApiUrl = `https://www.luogu.com.cn/api/user/search?keyword=${username}`;
-    const uid = await ctx.cache.tryGet(userApiUrl, async () => {
-        const rsp = await got(userApiUrl).json();
-        return rsp.users[0].uid;
-    });
+    const blogBaseUrl = `https://www.luogu.com.cn/blog/${name}/`;
 
-    // Get the title and link from the sitemap
-    const sitemapUrl = `https://www.luogu.com.cn/blog/${username}/_sitemap`;
-    const { title: blogTitle, link: blogBaseUrl } = await ctx.cache.tryGet(sitemapUrl, async () => {
-        const rsp = await got(sitemapUrl);
+    // Fetch the uid & title
+    const { uid: blogUid, title: blogTitle } = await ctx.cache.tryGet(blogBaseUrl, async () => {
+        const rsp = await got(blogBaseUrl);
         const $ = cheerio.load(rsp.data);
-        const title = $('title').text();
-        const link = $('.am-alert > a').attr('href');
+        const uid = $("meta[name='blog-uid']").attr('content');
+        const name = $("meta[name='blog-name']").attr('content');
         return {
-            title,
-            link,
+            uid,
+            title: `${name} - 洛谷博客`,
         };
     });
 
-    const posts = (await got(`https://www.luogu.com.cn/api/blog/lists?uid=${uid}`).json()).data.result.map((r) => ({
+    const posts = (await got(`https://www.luogu.com.cn/api/blog/lists?uid=${blogUid}`).json()).data.result.map((r) => ({
         title: r.title,
         link: `${blogBaseUrl}${r.identifier}`,
         pubDate: new Date(r.postTime * 1000),
@@ -34,7 +28,7 @@ module.exports = async (ctx) => {
     const item = await Promise.all(
         posts.map((post) =>
             ctx.cache.tryGet(post.link, async () => {
-                const rsp = await got.get(post.link);
+                const rsp = await got(post.link);
                 const $ = cheerio.load(rsp.data);
                 return {
                     title: post.title,