feat(curseforge): add curseforge support

docs/README.md

@@ -2588,3 +2588,15 @@ GitHub 官方也提供了一些 RSS:
 ### App Store/Mac App Store
 
 见 <#app-store-mac-app-store>
+
+## Minecraft CurseForge
+
+### Mod 更新
+
+举例: <https://rsshub.app/curseforge/files/jei>
+
+路由: `/curseforge/files/:project`
+
+参数:
+
+- project: 项目的短名或者 `Project ID`. 项目的短名可以在地址栏获取到, 例如地址为 `https://minecraft.curseforge.com/projects/non-update`, 短名就为 `non-update`. `Project ID` 可在 `Overview` 中的 `About This Project` 中找到

router.js

@@ -506,4 +506,7 @@ router.get('/zaobao/znews/:type?', require('./routes/zaobao/znews'));
 // Apple
 router.get('/apple/exchange_repair', require('./routes/apple/exchange_repair'));
 
+// Minecraft CurseForge
+router.get('/curseforge/files/:project', require('./routes/curseforge/files'));
+
 module.exports = router;

routes/curseforge/files.js

@@ -0,0 +1,42 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+
+const BASE_URL = 'https://minecraft.curseforge.com/';
+
+module.exports = async (ctx) => {
+    const { project } = ctx.params;
+    const projectLink = `${BASE_URL}/projects/${project}/files`;
+    const projectFilesReq = await axios.get(projectLink);
+    const { data } = projectFilesReq;
+    const $ = cheerio.load(data);
+    const projectName = $('.project-title span').text();
+    const reqs = $('.project-file-name-container > a').get()
+        .map(async (item) => {
+            const el = $(item);
+            const document = {};
+            const link = el.attr('href');
+            document.link = `${BASE_URL}${link}`;
+            const itemReq = await axios.get(document.link);
+            const $item = cheerio.load(itemReq.data);
+            const supportVersions = $item('.details-versions li')
+                .get()
+                .map((item) => $item(item).text())
+                .join(', ');
+            document.author = $item('.user-tag a').text();
+            document.title = $item('.details-header > h3').text();
+            document.description = `${projectName} 的 ${document.author} 发布了新的文件: ${document.title}. 支持的版本为: ${supportVersions}`;
+            document.pubDate = new Date(Number($item('.standard-datetime').attr('data-epoch')) * 1000).toUTCString();
+            document.guid = $item('.md5').text();
+
+            return document;
+        });
+
+    const item = await Promise.all(reqs);
+
+    ctx.state.data = {
+        title: `CurseForge 更新 - ${projectName}`,
+        link: projectLink,
+        description: 'CurseForge Mod 更新',
+        item,
+    };
+};