import { Socket } from 'net'
import btc from 'better-try-catch'

export default class Consumer extends Socket {
  constructor (path, opts={}) {
    super()
    this.path = path
    this.keepAlive = opts.keepAlive ? opts.keepAlive : true
  }

  async connect () {

    console.log('attempting to connect to socket: ', this.path)

    await super.connect({ path: this.path })
    console.log(`connected to ${this.path}`)
    this.setKeepAlive(this.keepAlive)

    this.on('error', (error) => {
      'client socket error \n ', error.code
    })

  }

  async send(packet) {
    let [err, strbuf] = btc(JSON.stringify)(packet)
    if (!err) {
      this.write(strbuf)
    }
    else { console.log(`bad packet JSON syntax \n ${packet}`)}
  }

  async listen (app) {
    this.on('data', async (buf) => {
      let [err, packet] = btc(JSON.parse)(buf.toString())
      if (!err) {
        app(packet)
      }
      else { console.log(`bad packet JSON syntax \n ${buf.toString()}`)}
    })
  }

}  // end class