Initial commit

cloudfunctions/getPost/index.js

@@ -0,0 +1,34 @@
+const cloud = require('wx-server-sdk')
+cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
+const db = cloud.database()
+
+exports.main = async (event, context) => {
+  const { OPENID } = cloud.getWXContext()
+  const { postId } = event
+  if (!postId) return { code: -1, message: '缺少 postId' }
+
+  try {
+    const post = await db.collection('posts').doc(postId).get()
+    if (!post.data) return { code: -1, message: '帖子不存在' }
+
+    const authorRes = await db.collection('users')
+      .where({ openid: post.data.authorId })
+      .field({ nickName: true, avatarUrl: true, openid: true, pets: true })
+      .get()
+
+    const likeRes = await db.collection('likes')
+      .where({ userId: OPENID, postId })
+      .count()
+
+    return {
+      code: 0,
+      data: {
+        ...post.data,
+        author: authorRes.data[0] || null,
+        isLiked: likeRes.total > 0,
+      },
+    }
+  } catch (e) {
+    return { code: -1, message: e.message }
+  }
+}