import 'package:flutter_bloc/flutter_bloc.dart';

import 'account_event.dart';
import 'account_state.dart';

class AccountBloc extends Bloc<AccountEvent, AccountState> {
  AccountBloc({
    AccountStatus initialStatus = AccountStatus.undefined,
    String? accountId,
  }) : super(AccountState(status: initialStatus, accountId: accountId)) {
    on<AccountStatusChanged>(
      (event, emit) => emit(
        AccountState(
          status: event.status,
          accountId: event.status == AccountStatus.loggedOut
              ? null
              : state.accountId,
        ),
      ),
    );
    on<AccountActivated>(
      (event, emit) => emit(
        AccountState(
          status: AccountStatus.loggedIn,
          accountId: event.accountId,
          freshLogin: event.freshLogin,
        ),
      ),
    );
  }

  void setStatus(AccountStatus status) => add(AccountStatusChanged(status));

  /// [accountId] became the active account (login, switch or takeover after a
  /// sign-out); null means no account is left.
  void activated(String? accountId, {bool freshLogin = false}) => add(
    accountId == null
        ? const AccountStatusChanged(AccountStatus.loggedOut)
        : AccountActivated(accountId, freshLogin: freshLogin),
  );
}