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 SOCKET_FILE = 'usocket-default'

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

let socket = {}

describe('Connects and Processes a payload via Unix Socket using JSON packet with defaults', 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))
    })
  })

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

  const TIMES = 3000

  it(`Tests unix socket with default echo JSON packet procssing with ${TIMES} packets sent`, async function () {

    let [err] = await btc(consumer.connect)()
    if (err) {
      console.log('unable to connect to socket to start test', consumer.path)
      process.kill(process.pid, 'SIGTERM')
    }

    consumer.registerPacketProcessor(async function (packet) {
      return new Promise((resolve) => {
        packet.times += 1
        if (packet.times === TIMES)  packet.payload = 'local1:'+packet.payload
        resolve(packet)})
    })


    let packet = {payload:'payload', times:0}
    for (let i = 1; i <= TIMES; i++) {
      packet = await consumer.send(packet)
    }
    expect(packet.payload+':'+packet.times).to.equal('local1:payload:'+TIMES)

  }) // end unix socket test


  it(`unix socket with two consumers alternating packets, ${TIMES} packets each and local processing`, async function () {


    let [err] = await btc(consumer2.connect)()
    if (err) {
      console.log('unable to connect to socket to start test', consumer.path)
      process.kill(process.pid, 'SIGTERM')
    }

    consumer2.registerPacketProcessor(async function (packet) {
      return new Promise((resolve) => {
        packet.times += 1
        if (packet.times === TIMES)  packet.payload = 'local2:'+packet.payload
        resolve(packet)})
    })

    let packet = {consumer:1, payload:'payload', times:-1}
    for (let i = 0; i < TIMES; i++) {
      packet = await consumer.send(packet)
      if (packet.times === TIMES) packet.times = 1
      packet = await consumer2.send(packet)
    }
    expect(packet.payload+':'+packet.times).to.equal('local2:local1:payload:'+TIMES)

  }) // end unix socket test

}) // end describe