/* eslint-disable @typescript-eslint/no-unused-vars */
import { Dicer } from '.'
import * as fs from 'fs'
import * as stream from 'stream'

function testDicerSyntax () {
  const opts: Dicer.Config = {
    boundary: 'testing',
  }
  const dicer = new Dicer(opts)
  const opts2: Dicer.Config = {
    headerFirst: true,
    maxHeaderPairs: 1,
  }
  const opts3: Dicer.Config = {
    boundary: 'more-testing',
    headerFirst: false,
    maxHeaderPairs: 8,
  }

  dicer.setBoundary('new-testing-boundary')
  dicer.on('part', handleDicerPartStream)
  dicer.on('finish', () => {
    console.log('dicer parsing finished')
  })
  dicer.on('preamble', part => {
    console.log('dicer preamble to new part')
  })
  dicer.on('trailer', data => {
    console.log(`dicer trailing data found: ${data.length} bytes`)
  })
  dicer.on('close', () => {
    console.log('dicer close')
  })
  dicer.on('drain', () => {
    console.log('dicer drain')
  })
  dicer.on('error', err => {
    console.error(`dicer error: ${err.message || JSON.stringify(err)}`)
  })
  dicer.on('finish', () => {
    console.log('dicer finish')
  })
  dicer.on('pipe', (src: stream.Readable) => {
    console.log('dicer pipe')
  })
  dicer.on('unpipe', (src: stream.Readable) => {
    console.log('dicer unpipe')
  })
  const inputFileStream = fs.createReadStream('in-test-file.txt')
  inputFileStream.pipe(dicer)
}
/**
 * Handle a part found by a Dicer parser
 *
 * @param part Part found
 */
function handleDicerPartStream (part: Dicer.PartStream) {
  console.log('dicer part found')
  const outputFileStream = fs.createWriteStream('out-test-file.txt')
  part.on('readable', () => {
    console.log('part readable')
  })
  part.on('header', header => {
    console.log(`part header found:\n${JSON.stringify(header)}`)
  })
  part.on('data', () => {
    console.log('part data')
  })
  part.on('finish', () => {
    console.log('part finished')
  })
  part.on('error', err => {
    console.error(`part error: ${err.message || JSON.stringify(err)}`)
  })
  part.on('end', () => {
    console.log('part ended')
  })
  part.on('close', () => {
    console.log('part closed')
  })
  part.pipe(outputFileStream)
}