update

lib/blocs/auth_bloc/auth_bloc.dart

@@ -52,7 +52,19 @@ class AuthBloc extends Bloc<AuthEvent, AuthState> {
       AuthEventAddEmailAndPassword event, Emitter<AuthState> emit) async {
     emit(AuthStateProcess());
     try {
-      await _userRepository.addEmailAndPassword(event.email, event.password);
+      final String? error = await _userRepository.addEmailAndPassword(
+          event.email, event.password);
+      if (error == null) {
+        emit(AuthStateSuccess());
+      } else {
+        if (error == 'requires-recent-login') {
+          emit(AuthStateRequiresRecentLogin());
+        } else if (error == 'email-already-in-use') {
+          emit(AuthStateEmailAlreadyInUse());
+        } else {
+          emit(const AuthStateFailure());
+        }
+      }
     } catch (e) {
       emit(const AuthStateFailure());
     }

lib/blocs/auth_bloc/auth_state.dart

@@ -19,6 +19,10 @@ class AuthStateVerifyOAuth extends AuthState {
 
 class AuthStateSuccess extends AuthState {}
 
+class AuthStateRequiresRecentLogin extends AuthState {}
+
+class AuthStateEmailAlreadyInUse extends AuthState {}
+
 class AuthStateFailure extends AuthState {
   final String? message;