import { EBiometricsProvider } from '../models';

export class UuidUtils {
  static guid(provider: EBiometricsProvider): string {
    let d = new Date().getTime();

    if (typeof performance !== 'undefined' && typeof performance.now === 'function') {
      d += performance.now();
    }

    const template = provider === EBiometricsProvider.idemia 
      ? 'xxxxxxxx-xxxx-4xxx-yxxx' 
      : 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx';

    return template.replace(/[xy]/g, (c) => {
      const r = (d + Math.random() * 16) % 16 | 0;
      d = Math.floor(d / 16);
      return (c === 'x' ? r : (r & 0x3) | 0x8).toString(16);
    });
  }
}