const cloud = require('wx-server-sdk')

cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
const db = cloud.database()

exports.main = async event => {
  const { OPENID } = cloud.getWXContext()
  const now = Date.now()
  const data = {
    openid: OPENID,
    location: event.location || null,
    visible: Boolean(event.visible),
    updatedAt: now
  }
  const existed = await db.collection('locations').where({ openid: OPENID }).limit(1).get()
  if (existed.data.length) await db.collection('locations').doc(existed.data[0]._id).update({ data })
  else await db.collection('locations').add({ data })

  return { ok: true }
}