修复动态发布与互动问题

cloudfunctions/postUpdate/index.js

@@ -0,0 +1,36 @@
+const cloud = require('wx-server-sdk')
+
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+
+const ALLOWED_VISIBILITY = ['public', 'friends', 'private']
+
+// Lightweight edit: only the post's text content and visibility can change here.
+exports.main = async event => {
+  const { OPENID } = cloud.getWXContext()
+  if (!OPENID) throw new Error('no openid in wx context')
+  if (!event.postId) throw new Error('postId is required')
+
+  let postRes
+  try {
+    postRes = await db.collection('posts').doc(event.postId).get()
+  } catch (_) {
+    throw new Error('post not found')
+  }
+  const post = postRes.data
+  if (!post) throw new Error('post not found')
+  if (post.authorOpenid !== OPENID) throw new Error('not allowed')
+
+  const data = { updatedAt: Date.now() }
+  if (typeof event.content === 'string') {
+    const content = event.content.trim()
+    if (!content) throw new Error('content is required')
+    data.content = content.slice(0, 2000)
+  }
+  if (typeof event.visibility === 'string' && ALLOWED_VISIBILITY.includes(event.visibility)) {
+    data.visibility = event.visibility
+  }
+
+  await db.collection('posts').doc(event.postId).update({ data })
+  return { ok: true }
+}

cloudfunctions/postUpdate/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "postUpdate",
+  "version": "1.0.0",
+  "main": "index.js",
+  "dependencies": {
+    "wx-server-sdk": "latest"
+  }
+}