import { expect } from 'chai'
import ObjBuffer from '../src/obj-buffer.js'

const obj = { cmd: 'test', _header: { name: 'a # name', id: 'i12345' }, arg: 5 }
const ser = '66_%#_{"cmd":"test","_header":{"name":"a # name","id":"i12345"},"arg":5}'
const otb = new ObjBuffer()
const event = 'decoded'

describe('Object to Buffer encode/decode', function () {
  it('Should stringify and encode a message/object', async function () {
    expect(await otb.encode(obj)).to.equal(ser)
  })

  it('Should encode and decode a message', function () {
    return new Promise(async (resolve, reject) => {
      otb.once(event, mes => {
        // console.log('message received', mes)
        expect(mes).to.deep.equal(obj)
        resolve()
      })
      const ser = await otb.encode(obj)
      // console.log('encoded', ser)
      otb.decode(ser)
    })
  })

  it('encode throws an error if object contains the delmiter', async function () {
    obj._header.name = '_%#_'
    return otb.encode(obj)
      .then(res => {
        expect.fail('no error was thrown for')
      })
      .catch(error => {
      // console.log('error', error)
        expect(error).to.be.an('error')
      }
      )
  })

  it('Should queue message if paused and emit if resumed', function () {
    return new Promise(async (resolve, reject) => {
      otb.once(event, mes => {
        // console.log('queued message', mes)
        expect(mes).to.deep.equal(obj)
        resolve()
      })
      obj._header.name = 'name'
      const ser = await otb.encode(obj)
      otb.pause()
      otb.decode(ser)
      // console.log(otb.state, otb.queue[0])
      expect(otb.queue[0]).to.deep.equal(obj)
      otb.resume()
    })
  })
})