/**
 * Domain Entity: LeagueMembership and JoinRequest
 *
 * Represents a driver's membership in a league and join requests.
 */

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

export type MembershipRole = 'owner' | 'admin' | 'steward' | 'member';
export type MembershipStatus = 'active' | 'pending' | 'none';

export interface LeagueMembershipProps {
  id?: string;
  leagueId: string;
  driverId: string;
  role: MembershipRole;
  status?: MembershipStatus;
  joinedAt?: Date;
}

export class LeagueMembership implements IEntity<string> {
  readonly id: string;
  readonly leagueId: string;
  readonly driverId: string;
  readonly role: MembershipRole;
  readonly status: MembershipStatus;
  readonly joinedAt: Date;

  private constructor(props: Required<LeagueMembershipProps>) {
    this.id = props.id;
    this.leagueId = props.leagueId;
    this.driverId = props.driverId;
    this.role = props.role;
    this.status = props.status;
    this.joinedAt = props.joinedAt;
  }

  static create(props: LeagueMembershipProps): LeagueMembership {
    this.validate(props);

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

    const status = props.status ?? 'pending';
    const joinedAt = props.joinedAt ?? new Date();

    return new LeagueMembership({
      id,
      leagueId: props.leagueId,
      driverId: props.driverId,
      role: props.role,
      status,
      joinedAt,
    });
  }

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

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

    if (!props.role) {
      throw new RacingDomainValidationError('Membership role is required');
    }
  }
}

export interface JoinRequest {
  id: string;
  leagueId: string;
  driverId: string;
  requestedAt: Date;
  message?: string;
}