import { inject, Injectable, Signal } from '@angular/core';
import { toSignal } from '@angular/core/rxjs-interop';
import { OidcSecurityService } from 'angular-auth-oidc-client';
import { map } from 'rxjs';
import { AuthService } from './auth.service';

/** DigiD-backed AuthService over angular-auth-oidc-client (Keycloak `digid` realm). */
@Injectable()
export class DigiadAuthService extends AuthService {
  private readonly oidc = inject(OidcSecurityService);

  readonly isAuthenticated: Signal<boolean> = toSignal(
    this.oidc.isAuthenticated$.pipe(map((result) => result.isAuthenticated)),
    { initialValue: false },
  );

  readonly bsn: Signal<string | undefined> = toSignal(
    this.oidc.userData$.pipe(map((data) => (data.userData as { bsn?: string } | null)?.bsn)),
    { initialValue: undefined },
  );

  override login(): void {
    this.oidc.authorize();
  }

  override logout(): void {
    this.oidc.logoff().subscribe();
  }
}