import { createHash } from 'node:crypto';

/**
 * Value Object para SoftwareSecurityCode requerido en las UBLExtensions de la DIAN
 * Formula: SHA-384(SoftwareID + SoftwarePIN + NumeroFactura)
 */
export class SoftwareSecurityCode {
  private readonly _hash: string;

  private constructor(hash: string) {
    this._hash = hash;
  }

  public static generar(softwareId: string, softwarePin: string, numeroFactura: string): SoftwareSecurityCode {
    const raw = `${softwareId.trim()}${softwarePin.trim()}${numeroFactura.trim()}`;
    const hash = createHash('sha384').update(raw, 'utf8').digest('hex');
    return new SoftwareSecurityCode(hash);
  }

  public get hash(): string {
    return this._hash;
  }

  public toString(): string {
    return this._hash;
  }
}