feat: add linux patchwork comments (#1327)

docs/README.md

@@ -794,6 +794,10 @@ GitHub 官方也提供了一些 RSS:
 
 <route name="最新发布" author="xyqfer" example="/testerhome/newest" path="/testerhome/newest"/>
 
+### Linux Patchwork
+
+<route name="Patch Comments" author="ysc3839" example="/patchwork.kernel.org/comments/10723629" path="/patchwork.kernel.org/comments/:id" :paramsDesc="['Patch ID']"/>
+
 ## 直播
 
 ### 哔哩哔哩直播

lib/router.js

@@ -944,4 +944,7 @@ router.get('/36kr/search/article/:keyword', require('./routes/36kr/search/articl
 // icourse163
 router.get('/icourse163/newest', require('./routes/icourse163/newest'));
 
+// patchwork.kernel.org
+router.get('/patchwork.kernel.org/comments/:id', require('./routes/patchwork.kernel.org/comments'));
+
 module.exports = router;

lib/routes/patchwork.kernel.org/cache.js

@@ -0,0 +1,17 @@
+const axios = require('../../utils/axios');
+
+module.exports = {
+    getPatchnameFromID: async (ctx, id) => {
+        const key = 'patchwork-kernel-org-patchname-from-id-' + id;
+        let name = await ctx.cache.get(key);
+        if (!name) {
+            const patchDetail = await axios({
+                method: 'get',
+                url: `https://patchwork.kernel.org/api/patches/${id}/`,
+            });
+            name = patchDetail.data.name;
+            ctx.cache.set(key, name, 24 * 60 * 60);
+        }
+        return name;
+    },
+};

lib/routes/patchwork.kernel.org/comments.js

@@ -0,0 +1,32 @@
+const axios = require('../../utils/axios');
+const cache = require('./cache');
+const he = require('he');
+
+module.exports = async (ctx) => {
+    const id = ctx.params.id;
+
+    const name = await cache.getPatchnameFromID(ctx, id);
+
+    const host = `https://patchwork.kernel.org/patch/${id}/`;
+    const url = `https://patchwork.kernel.org/api/patches/${id}/comments/`;
+
+    const response = await axios({
+        method: 'get',
+        url,
+        params: {
+            order: '-date',
+        },
+    });
+    const data = response.data;
+
+    ctx.state.data = {
+        title: `${name} - Comments`,
+        link: host,
+        item: data.map((item) => ({
+            title: item.subject,
+            description: he.escape(he.escape(item.content)).replace(/\n/g, '<br>'),
+            pubDate: new Date(item.date).toUTCString(),
+            link: item.web_url,
+        })),
+    };
+};