fix(route): zhihu private answers (#12379)

* fix(route): zhihu answers

* fix: more robust caching

lib/v2/zhihu/answers.js

@@ -19,16 +19,20 @@ module.exports = async (ctx) => {
     let name = data[0].author.name;
 
     if (name === '知乎用户') {
-        const info = await got({
-            method: 'get',
-            url: `https://www.zhihu.com/api/v4/members/${id}/activities?limit=1`,
-            headers: {
-                ...utils.header,
-                Referer: `https://www.zhihu.com/people/${id}/activities`,
-                Authorization: 'oauth c3cef7c66a1843f8b3a9e6a1e3160e20', // hard-coded in js
-            },
+        const userProfile = await ctx.cache.tryGet(`zhihu:profile:${id}`, async () => {
+            const apiPath = `/api/v4/profile/${id}/infinity`;
+
+            const { data } = await got({
+                method: 'get',
+                url: `https://www.zhihu.com${apiPath}`,
+                headers: {
+                    ...utils.header,
+                    Referer: `https://www.zhihu.com/people/${id}`,
+                },
+            });
+            return data.data;
         });
-        name = info.data.data[0].actor.name;
+        name = userProfile.name;
     }
 
     const items = await Promise.all(