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lib/presentation/blocs/change_password/change_password_bloc.dart

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+import 'package:flutter_bloc/flutter_bloc.dart';
+import '../../../domain/usecases/change_password_usecase.dart';
+import 'change_password_event.dart';
+import 'change_password_state.dart';
+
+class ChangePasswordBloc
+    extends Bloc<ChangePasswordEvent, ChangePasswordState> {
+  final ChangePasswordUseCase changePasswordUseCase;
+
+  ChangePasswordBloc({required this.changePasswordUseCase})
+    : super(const ChangePasswordInitial()) {
+    on<ChangePasswordSubmitted>(_onChangePasswordSubmitted);
+    on<ChangePasswordReset>(_onChangePasswordReset);
+  }
+
+  Future<void> _onChangePasswordSubmitted(
+    ChangePasswordSubmitted event,
+    Emitter<ChangePasswordState> emit,
+  ) async {
+    emit(const ChangePasswordLoading());
+
+    final result = await changePasswordUseCase(event.request);
+
+    result.fold((failure) => emit(ChangePasswordError(failure.message)), (
+      response,
+    ) {
+      if (response.isSuccess) {
+        emit(ChangePasswordSuccess(response.message));
+      } else {
+        emit(ChangePasswordError(response.message));
+      }
+    });
+  }
+
+  void _onChangePasswordReset(
+    ChangePasswordReset event,
+    Emitter<ChangePasswordState> emit,
+  ) {
+    emit(const ChangePasswordInitial());
+  }
+}

lib/presentation/blocs/change_password/change_password_event.dart

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+import '../../../domain/models/change_password_request.dart';
+
+abstract class ChangePasswordEvent {}
+
+class ChangePasswordSubmitted extends ChangePasswordEvent {
+  final ChangePasswordRequest request;
+
+  ChangePasswordSubmitted(this.request);
+}
+
+class ChangePasswordReset extends ChangePasswordEvent {}

lib/presentation/blocs/change_password/change_password_state.dart

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+abstract class ChangePasswordState {
+  const ChangePasswordState();
+}
+
+class ChangePasswordInitial extends ChangePasswordState {
+  const ChangePasswordInitial();
+}
+
+class ChangePasswordLoading extends ChangePasswordState {
+  const ChangePasswordLoading();
+}
+
+class ChangePasswordSuccess extends ChangePasswordState {
+  final String message;
+
+  const ChangePasswordSuccess(this.message);
+}
+
+class ChangePasswordError extends ChangePasswordState {
+  final String message;
+
+  const ChangePasswordError(this.message);
+}