// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()

// 云函数入口函数
exports.main = async (event, context) => {
  const {
    OPENID
  } = cloud.getWXContext()

  const message_check = await db.collection('message')
    .where({
      _id: event.msg_id || ''
    })
    .get()
  if (message_check.data.length === 0) {
    return {
      errMsg: '信息不存在',
      status: 'ERR'
    }
  }

  const manager_check = await db.collection('manager')
    .where({
      pub_id: message_check.data[0].pub_id,
      user_id: OPENID
    })
    .get()
  if (manager_check.data.length === 0) {
    return {
      errMsg: '只有管理员可以修改',
      status: 'ERR'
    }
  }

  if (event.type === '纳新') {
    const publisher = await db.collection('publisher')
      .doc(message_check.data[0].pub_id)
      .get()
    event.type = publisher.data.type + '纳新'
  }

  const message = await db.collection('message')
    .doc(event.msg_id)
    .update({
      data: {
        name: event.name,
        type: event.type,
        brief: event.brief,
        poster: event.poster,
        photo: event.photo,
        tag: event.tag,
        orient: event.orient,
        time: event.time,
        place: event.place,
        contact: event.contact,
        detail: event.detail,
        link: event.link
      }
    })

  const favorites = await db.collection('favorite')
    .where({
      msg_id: event.msg_id
    })
    .get()
  const notifications = []
  for (let i = 0; i < favorites.data.length; i++) {
    notifications.push({
      user_id: favorites.data[i].user_id,
      msg_id: favorites.data[i].msg_id,
      type: '动态',
      content: event.notification || '',
      nofity_time: new Date()
    })
  }
  await db.collection('notification')
    .add({
      data: notifications
    })

  return {
    stats: message.stats,
    status: 'OK'
  }
}