v0.0.4

cloudfunctions/profileGet/index.js

@@ -0,0 +1,40 @@
+const cloud = require('wx-server-sdk')
+
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+
+// Count a collection safely — returns 0 if the collection does not exist yet.
+async function safeCount(collection, where) {
+  try {
+    const res = await db.collection(collection).where(where).count()
+    return res.total || 0
+  } catch (e) {
+    return 0
+  }
+}
+
+// Derive live stats from the source collections so the displayed numbers are
+// always accurate instead of relying on a stored field that can drift.
+async function computeStats(user) {
+  const [posts, favorites, following, followers] = await Promise.all([
+    safeCount('posts', { authorId: user._id }),
+    safeCount('postFavorites', { openid: user.openid }),
+    safeCount('follows', { followerId: user._id }),
+    safeCount('follows', { followeeId: user._id })
+  ])
+  return { posts, following, followers, favorites }
+}
+
+exports.main = async event => {
+  const { OPENID } = cloud.getWXContext()
+  if (!event.userId && !OPENID) throw new Error('no openid in wx context')
+  const query = event.userId ? { _id: event.userId } : { openid: OPENID }
+  const users = await db.collection('users').where(query).limit(1).get()
+  const user = users.data[0] || null
+  if (!user) return { user: null, pets: [] }
+
+  const pets = await db.collection('pets').where({ ownerId: user._id }).limit(20).get()
+  user.stats = await computeStats(user)
+
+  return { user, pets: pets.data }
+}