const getPixels = require('get-pixels')
const GIFEncoder = require('gif-encoder')
const fs = require('fs')
const imagemin = require('imagemin')
const imageminGiflossy = require('imagemin-giflossy')
const imageminGifsicle = require('imagemin-gifsicle')

const images = [
  {delay: 200, path: 'image/1.png'},
  {delay: 200, path: 'image/1.png'},
  {delay: 200, path: 'image/1.png'},
  {delay: 200, path: 'image/1.png'},
  {delay: 200, path: 'image/1.png'},
]
const images1 = [
  {delay: 200, path: 'image/2.jpg'},
  {delay: 200, path: 'image/2.jpg'},
  {delay: 200, path: 'image/2.jpg'},
  {delay: 200, path: 'image/2.jpg'},
  {delay: 200, path: 'image/2.jpg'},
]
const images2 = [
  {delay: 200, path: '1.png'},
  {delay: 200, path: '1.png'},
  {delay: 200, path: '1.png'},
  {delay: 200, path: '1.png'},
  {delay: 200, path: '1.png'},
]

const images3 = [
  {delay: 200, path: '2.jpg'},
  {delay: 200, path: '2.jpg'},
  {delay: 200, path: '2.jpg'},
  {delay: 200, path: '2.jpg'},
  {delay: 200, path: '2.jpg'},
]


function wrapGif(imgData, pathReadyGif = '1.gif') {
  const gif = new GIFEncoder(240, 400)
  const stream = fs.createWriteStream(pathReadyGif)
  let counter = 0

  gif.pipe(stream)
  gif.setQuality(20)
  gif.setDelay(100)
  gif.writeHeader()
  gif.setRepeat(0)

  return new Promise((res, rej) => {
    function addToGif() {
      getPixels(imgData[counter].path, (error, pixels) => {
        if (error) {
          return rej()
        }
        gif.setDelay(imgData[counter].delay)
        gif.addFrame(pixels.data)
        gif.read()
        if (counter === imgData.length - 1) {
          gif.finish()
          return res()
        }
        counter++
        addToGif()
      })
    }
    addToGif()
  })
}

(async () => {
  try {
    await imagemin([`${__dirname}/2.gif`, `${__dirname}/1.gif`], `${__dirname}/build/`, {
      plugins: [
        imageminGifsicle({
          colors: 100,
          optimizationLevel: 3,
        }),
      ]
    })
    console.log('ok')
  }
  catch (error) {
    console.log(error)
  }
})()

// wrapGif(images2)