import crypto from 'crypto';

export function parseFileSize(size) {
  const sized = parseFloat(size);
  return (isNaN(sized) ? 0 : sized) * (
    /GB/i.test(size)
      ? 1000000
      : /MB/i.test(size)
        ? 1000
        : /KB/i.test(size)
          ? 1
          : /bytes?/i.test(size)
            ? 0.001
            : /B/i.test(size)
              ? 0.1
              : 0
  );
}

const SUFFIX = 'f24c8c73d48b7686ed11a3bf97983f6f7eb6395f19268184aae742e93683c00c';
export function generateHash(url) {
  const hash = crypto.createHash('sha256');
  const data = url + Date.now() + SUFFIX;
  hash.update(data);
  return hash.digest('hex');
}

export function time2Number(time) {
  let [hours, minutes, seconds] = time.split(':').map(Number);
  if (!seconds) { // '00:07'
    [minutes, seconds] = [hours, minutes];
    hours = 0;
  }
  return hours * 3600
    + minutes * 60
    + seconds * 1;
}