v0.0.4

cloudfunctions/matchLike/index.js

@@ -0,0 +1,46 @@
+const cloud = require('wx-server-sdk')
+
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+const _ = db.command
+
+exports.main = async event => {
+  const { OPENID } = cloud.getWXContext()
+  const { petId } = event
+  if (!petId) throw new Error('petId is required')
+
+  // Get current user and their pets
+  const userRes = await db.collection('users').where({ openid: OPENID }).limit(1).get()
+  if (!userRes.data.length) throw new Error('user not found')
+  const userId = userRes.data[0]._id
+
+  // Record this like (idempotent)
+  const existed = await db.collection('matches').where({ fromOpenid: OPENID, petId }).limit(1).get()
+  if (!existed.data.length) {
+    await db.collection('matches').add({ data: { fromOpenid: OPENID, userId, petId, createdAt: Date.now() } })
+  }
+
+  // Check mutual match: does the target pet's owner like any of current user's pets?
+  let matched = false
+  try {
+    const targetPetRes = await db.collection('pets').doc(petId).get()
+    const targetOwnerId = targetPetRes.data?.ownerId
+    if (targetOwnerId && targetOwnerId !== userId) {
+      const targetOwnerRes = await db.collection('users').doc(targetOwnerId).get()
+      const targetOpenid = targetOwnerRes.data?.openid
+      if (targetOpenid) {
+        const myPetsRes = await db.collection('pets').where({ ownerId: userId }).limit(20).get()
+        const myPetIds = myPetsRes.data.map(p => p._id)
+        if (myPetIds.length) {
+          const reverseRes = await db.collection('matches')
+            .where({ fromOpenid: targetOpenid, petId: _.in(myPetIds) })
+            .limit(1)
+            .get()
+          matched = reverseRes.data.length > 0
+        }
+      }
+    }
+  } catch (_) {}
+
+  return { matched }
+}