import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
  name: 'formatFileSizePipe',
  standalone: true
})
export class FormatFileSizePipePipe implements PipeTransform {

  transform(value: number, ...args: unknown[]): string {
    if (value === null || value === 0) return '0 Bytes';

    const units = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    const index = Math.min(Math.floor(Math.log(value) / Math.log(1024)), units.length - 1);
    const filesize = Number((value / Math.pow(1024, index)).toFixed(2));

    return `${filesize.toLocaleString()} ${units[index]}`;
  }

}