import { File } from '../services/FileService';

function formatBytes(bytes: number, decimals = 2): string {
  if (!+bytes) return '0 Bytes';

  const k = 1024;
  const dm = decimals < 0 ? 0 : decimals;
  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

  const i = Math.floor(Math.log(bytes) / Math.log(k));

  return `${parseFloat((bytes / k ** i).toFixed(dm))} ${sizes[i]}`;
}

const formatDuration = (duration: number): string => {
  // return new Date((duration ?? 0) * 1000).toISOString().slice(11, 19);

  const h = Math.floor(duration / 3600);
  const m = Math.floor((duration % 3600) / 60);
  const s = Math.floor((duration % 3600) % 60);

  const hDisplay = h > 0 ? h + (h === 1 ? 'hr ' : 'hrs ') : '';
  const mDisplay = m > 0 ? m + (m === 1 ? 'm ' : 'm ') : '';
  const sDisplay = s > 0 ? s + (s === 1 ? 's' : 's') : '';

  if (h === 0) {
    return hDisplay + mDisplay + sDisplay;
  }

  return hDisplay + mDisplay;
};

const totalDuration = (files: File[]): number => {
  return files.reduce(
    (acc, file) => acc + (file?.durationSeconds ?? 0),
    0,
  );
};

const calculatePrice = (duration: number): string => {
  const hours = duration / 3600;
  const roundedHours = Math.ceil(hours);
  return String(Number(roundedHours * 3).toFixed(2));
};

const calculateStripeCheckoutQuantity = (duration: number): number => {
  const hours = duration / 3600;
  const roundedHours = Math.ceil(hours);
  return Number(roundedHours);
};

const NinjaUtil = {
  formatBytes,
  formatDuration,
  totalDuration,
  calculatePrice,
  calculateStripeCheckoutQuantity,
};

export default NinjaUtil;