import { spawn } from 'child_process'
import chai from 'chai'
import chaiAsPromised from 'chai-as-promised'
import btc from 'better-try-catch'
chai.use(chaiAsPromised)
const expect = chai.expect

import { Consumer } from '../src'

const USOCKET = __dirname + '/sockets/test.sock'
const SOCKET_FILE = 'usocket-default-overwrite'

let consumer = new Consumer(USOCKET, {name:'unix-consumer'})
let consumer2 = new Consumer(USOCKET, {name:'unix-consumer2'})

const delay = time => new Promise(res=>setTimeout(()=>res(),time))

let socket = {}

describe('Connects and Processes a payload via Unix Socket using JSON packet with alt default processor', function(){

  before(async function(){
    socket = spawn('node',['-r', '@std/esm', './test/sockets/'+SOCKET_FILE])
    socket.stdout.on('data', function(buf) {
      console.log('[Socket]', String(buf))
    })

    await delay(500) // wait for sockets to get going
  })

  after(async function(){
    socket.kill()
  })

  it('Tests JSON packet procssing, 10 packets', async function () {

    consumer.packet.times = 0

    return new Promise(async function (resolve, reject) {

      setTimeout(() =>{ reject('10 packets not received in time')},1900)

      consumer.packet._process = function (packet) {
        this.times++
        if (this.times!==11) return

        try {
          expect(packet.payload).to.equal('overwrite default processor from instance at socket => unix payload')
          resolve()
        }
        catch(error) {
          reject(error)
        }
      }

      let [err] = await btc(consumer.connect)()
      if (err) reject(err)
      let packet = {payload:'unix payload'}
      for (var i = 0; i < 11; i++) {
        consumer.send(packet)
      }

    }) //end promise

  }) // end unix socket test


  it('unix socket with two consumers alternating packets, 10 packets each', async function () {

    consumer.packet.times = 0

    return new Promise(async function (resolve, reject) {

      setTimeout(() =>{ reject('10 packets not received in time')},1900)

      consumer.packet._process = function (packet) {
        this.times++
        // console.log(this.times,packet.payload)
        if (this.times!==11) return

        try {
          expect(packet.payload).to.equal('overwrite default processor from instance at socket => consumer 1 unix payload')
          resolve()
        }
        catch(error) {
          reject(error)
        }
      }

      consumer2.processPacket = function (packet) {
        return packet
      }

      let [err] = await btc(consumer2.connect)()
      if (err) reject(err)
      let packet1 = {payload:'consumer 1 unix payload'}
      let packet2 = {payload:'consumer2 unix payload'}
      for (var i = 0; i < 11; i++) {
        consumer.send(packet1)
        consumer2.send(packet2)
      }

    }) //end promise

  }) // end unix socket test



}) // end describe