/**
 * Function to randomise an array order
 * @param {array} array
 */
export function shuffleArray(array) {
  var currentIndex = array.length, temporaryValue, randomIndex;
  // While there remain elements to shuffle...
  while (0 !== currentIndex) {
    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;
    // And swap it with the current element.
    temporaryValue = array[currentIndex];
    array[currentIndex] = array[randomIndex];
    array[randomIndex] = temporaryValue;
  }
  return array;
}

export function urltoFile(url, filename, mimeType) {
  return fetch(url)
    .then(function (res) {
      return res.arrayBuffer();
    })
    .then(function (buf) {
      return new File([buf], filename, { type: mimeType });
    });
}