83 lines
2.2 KiB
Dart
83 lines
2.2 KiB
Dart
import 'package:bloc/bloc.dart';
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import 'package:dartz/dartz.dart';
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import 'package:freezed_annotation/freezed_annotation.dart';
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import 'package:injectable/injectable.dart';
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import '../../../domain/customer/customer.dart';
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part 'customer_loader_event.dart';
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part 'customer_loader_state.dart';
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part 'customer_loader_bloc.freezed.dart';
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@injectable
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class CustomerLoaderBloc
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extends Bloc<CustomerLoaderEvent, CustomerLoaderState> {
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final ICustomerRepository _repository;
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CustomerLoaderBloc(this._repository) : super(CustomerLoaderState.initial()) {
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on<CustomerLoaderEvent>(_onCustomerLoaderEvent);
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}
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Future<void> _onCustomerLoaderEvent(
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CustomerLoaderEvent event,
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Emitter<CustomerLoaderState> emit,
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) {
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return event.map(
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fetched: (e) async {
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var newState = state;
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if (e.isRefresh) {
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newState = newState.copyWith(isFetching: true);
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emit(newState);
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}
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newState = await _mapFetchedToState(newState, isRefresh: e.isRefresh);
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emit(newState);
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},
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setSelectedCustomer: (e) async {
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emit(state.copyWith(selectedCustomer: e.customer));
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},
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);
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}
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Future<CustomerLoaderState> _mapFetchedToState(
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CustomerLoaderState state, {
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bool isRefresh = false,
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}) async {
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state = state.copyWith(isFetching: false);
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if (state.hasReachedMax && state.customers.isNotEmpty && !isRefresh) {
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return state;
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}
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if (isRefresh) {
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state = state.copyWith(
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page: 1,
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failureOrOption: none(),
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hasReachedMax: false,
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customers: [],
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);
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}
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final failureOrCustomer = await _repository.getCustomer(page: state.page);
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state = failureOrCustomer.fold(
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(f) {
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if (state.customers.isNotEmpty) {
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return state.copyWith(hasReachedMax: true);
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}
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return state.copyWith(failureOrOption: optionOf(f));
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},
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(customers) {
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return state.copyWith(
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customers: List.from(state.customers)..addAll(customers.customers),
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failureOrOption: none(),
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page: state.page + 1,
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hasReachedMax: customers.customers.length < 10,
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);
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},
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);
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return state;
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}
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}
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