v0.0.4

cloudfunctions/postCreate/index.js

@@ -0,0 +1,65 @@
+const cloud = require('wx-server-sdk')
+
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+const _ = db.command
+
+const MEDIA_TONES = ['pet-1', 'pet-2', 'pet-3']
+const PET_TONES = { dog: 'gold', cat: 'purple', other: 'green' }
+
+exports.main = async event => {
+  const { OPENID } = cloud.getWXContext()
+  const now = Date.now()
+  const content = String(event.content || '').trim()
+  if (!content) throw new Error('content is required')
+
+  // Get author info first (required for snapshot)
+  const userRes = await db.collection('users').where({ openid: OPENID }).limit(1).get()
+  if (!userRes.data.length) throw new Error('user not found')
+  const user = userRes.data[0]
+
+  // Get pet snapshot if petId provided
+  let petSnapshot = null
+  if (event.petId) {
+    try {
+      const petRes = await db.collection('pets').doc(event.petId).get()
+      if (petRes.data) {
+        const p = petRes.data
+        petSnapshot = { name: p.name, breed: p.breed, tone: PET_TONES[p.species] || 'green' }
+      }
+    } catch (_) {}
+  }
+
+  // Derive mediaTone from media count so similar posts look varied
+  const mediaCount = Array.isArray(event.media) ? event.media.length : 0
+  const mediaTone = event.mediaTone || MEDIA_TONES[(mediaCount + now) % 3]
+
+  const post = {
+    authorOpenid: OPENID,
+    authorId: user._id,
+    authorSnapshot: { name: user.nickname, avatarKey: user.avatarKey },
+    petId: event.petId || '',
+    petSnapshot,
+    content: content.slice(0, 2000),
+    topics: Array.isArray(event.topics) ? event.topics : [],
+    media: Array.isArray(event.media) ? event.media : [],
+    mediaTone,
+    sticker: event.sticker || null,
+    locationText: event.locationText || '',
+    location: (typeof event.latitude === 'number' && typeof event.longitude === 'number')
+      ? { latitude: event.latitude, longitude: event.longitude }
+      : null,
+    visibility: event.visibility || 'public',
+    counts: { likes: 0, comments: 0, shares: 0, favorites: 0 },
+    createdAt: now,
+    updatedAt: now
+  }
+
+  const result = await db.collection('posts').add({ data: post })
+
+  await db.collection('users').doc(user._id).update({
+    data: { 'stats.posts': _.inc(1) }
+  })
+
+  return { postId: result._id }
+}

cloudfunctions/postCreate/package.json

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+{
+  "name": "postCreate",
+  "version": "1.0.0",
+  "main": "index.js",
+  "dependencies": {
+    "wx-server-sdk": "latest"
+  }
+}
+