export function byteArrayToLong(byteArray: Uint8Array): number {
  let value = 0;
  for (let i = byteArray.length - 1; i >= 0; i--) {
    value = value * 256 + byteArray[i];
  }
  return value;
}

export function shortTo2ByteArray(long: number): Uint8Array {
  if (long > (2 ^ (32 - 1))) throw new Error('Short too long');
  // we want to represent the input as a 8-bytes array
  const byteArray = [0, 0];

  for (let index = 0; index < byteArray.length; index++) {
    const byte = long & 0xff;
    byteArray[index] = byte;
    long = (long - byte) / 256;
  }

  return Uint8Array.from(byteArray);
}

export function longTo8ByteArray(long: number): Uint8Array {
  // we want to represent the input as a 8-bytes array
  const byteArray = [0, 0, 0, 0, 0, 0, 0, 0];

  for (let index = 0; index < byteArray.length; index++) {
    const byte = long & 0xff;
    byteArray[index] = byte;
    long = (long - byte) / 256;
  }

  return Uint8Array.from(byteArray);
}