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 { latitude, longitude } = event

  if (!latitude || !longitude) return { code: -1, message: '缺少位置' }

  try {
    await db.collection('users')
      .where({ openid: OPENID })
      .update({
        data: {
          lastLocation: { latitude, longitude },
          isOnline: true,
          lastSeen: db.serverDate(),
        },
      })
    return { code: 0, data: null }
  } catch (e) {
    return { code: -1, message: e.message }
  }
}