69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
// 云函数入口文件
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const cloud = require('wx-server-sdk')
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cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
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const db = cloud.database()
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const _ = db.command
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exports.main = async (event, context) => {
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const wxContext = cloud.getWXContext()
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const openid = wxContext.OPENID
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const { roomId, userInfo } = event
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if (!roomId) {
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return { success: false, msg: '缺少 roomId' }
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}
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try {
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const roomRef = db.collection('rooms').doc(roomId)
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const room = await roomRef.get()
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if (!room.data) {
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return { success: false, msg: '房间不存在' }
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}
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// 检查是否已经在房间内
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const members = room.data.members || []
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const isMember = members.some(m => m.openid === openid)
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if (isMember) {
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return { success: true, msg: '已在房间内' }
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}
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// 检查人数限制（最多8人）
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if (members.length >= 8) {
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return { success: false, msg: '房间人数已满（最多8人）' }
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}
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// 加入房间
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const newMember = {
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openid: openid,
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avatarUrl: userInfo?.avatarUrl || 'https://mmbiz.qpic.cn/mmbiz/icTdbqWNOwNRna42FI242Lcia07jQodd2FJGIYQfG0LAJGFxM4FbnQP6yfMxBgJ0F3YRqJCJ1aPAK2dQagdusBZg/0',
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nickName: userInfo?.nickName || '微信用户',
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location: null,
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joinedAt: new Date()
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}
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await roomRef.update({
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data: {
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members: _.push(newMember)
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}
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})
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}
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return {
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success: true,
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msg: '加入成功'
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}
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} catch (err) {
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console.error(err)
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return {
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success: false,
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msg: '加入失败',
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error: err
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}
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}
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}
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