/**
 * Domain Entity: RaceRegistration
 *
 * Represents a registration of a driver for a specific race.
 */

import type { IEntity } from '@gridpilot/shared/domain';
import { RacingDomainValidationError } from '../errors/RacingDomainError';

export interface RaceRegistrationProps {
  id?: string;
  raceId: string;
  driverId: string;
  registeredAt?: Date;
}

export class RaceRegistration implements IEntity<string> {
  readonly id: string;
  readonly raceId: string;
  readonly driverId: string;
  readonly registeredAt: Date;

  private constructor(props: Required<RaceRegistrationProps>) {
    this.id = props.id;
    this.raceId = props.raceId;
    this.driverId = props.driverId;
    this.registeredAt = props.registeredAt;
  }

  static create(props: RaceRegistrationProps): RaceRegistration {
    this.validate(props);

    const id =
      props.id && props.id.trim().length > 0
        ? props.id
        : `${props.raceId}:${props.driverId}`;

    const registeredAt = props.registeredAt ?? new Date();

    return new RaceRegistration({
      id,
      raceId: props.raceId,
      driverId: props.driverId,
      registeredAt,
    });
  }

  private static validate(props: RaceRegistrationProps): void {
    if (!props.raceId || props.raceId.trim().length === 0) {
      throw new RacingDomainValidationError('Race ID is required');
    }

    if (!props.driverId || props.driverId.trim().length === 0) {
      throw new RacingDomainValidationError('Driver ID is required');
    }
  }
}