import mongoose from 'mongoose'
import { log } from '@juzi/wechaty-puppet'

export function startMongoose (server: string) {
  void mongoose.connect(server, { autoIndex: false  })

  // MongoDB连接成功后回调，这里仅输出一行日志
  mongoose.connection.on('connected', function () {
    log.info('Mongoose default connection open to :' + server)
  })

  // MongoDB连接出错后回调，这里仅输出一行日志
  mongoose.connection.on('error', function (err) {
    log.info('Mongoose default connection error: ' + err)
  })

  // MongoDB连接断开后回调，这里仅输出一行日志
  mongoose.connection.on('disconnected', function () {
    log.info('Mongoose default connection disconnected')
  })

  // 当前进程退出之前关闭MongoDB连接
  process.on('SIGINT', function () {
    const bool =  () => {
      log.info('Mongoose default connection closed through app termination')
      return process.exit(0)
    }
    void mongoose.connection.close(bool())
  })

}