import { Base64 } from 'js-base64'

export const decode = function (data, key) {
  data = Base64.decode(data)
  const dl = data.length
  const kl = key.length
  let str = ''
  for (let i = 0; i < dl; i++) {
    str += String.fromCharCode(data.charCodeAt(i) ^ key.charCodeAt(i % kl))
  }
  return str
}

export const encode = function (data, key) {
  const dl = data.length
  const kl = key.length
  let str = ''
  for (let i = 0; i < dl; i++) {
    str += String.fromCharCode(key.charCodeAt(i % kl) ^ data.charCodeAt(i))
  }
  return Base64.encode(str)
}