79 lines
2.0 KiB
Dart
79 lines
2.0 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/table/table.dart';
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part 'table_loader_event.dart';
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part 'table_loader_state.dart';
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part 'table_loader_bloc.freezed.dart';
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@injectable
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class TableLoaderBloc extends Bloc<TableLoaderEvent, TableLoaderState> {
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final ITableRepository _repository;
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TableLoaderBloc(this._repository) : super(TableLoaderState.initial()) {
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on<TableLoaderEvent>(_onTableLoadedEvent);
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}
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Future<void> _onTableLoadedEvent(
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TableLoaderEvent event,
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Emitter<TableLoaderState> 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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);
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}
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Future<TableLoaderState> _mapFetchedToState(
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TableLoaderState 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.tables.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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failureOption: none(),
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hasReachedMax: false,
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tables: [],
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);
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}
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final failureOrTable = await _repository.fetchTables(page: state.page);
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state = failureOrTable.fold(
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(f) {
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if (state.tables.isNotEmpty) {
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return state.copyWith(hasReachedMax: true);
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}
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return state.copyWith(failureOption: optionOf(f));
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},
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(tables) {
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return state.copyWith(
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tables: List.from(state.tables)..addAll(tables.tables),
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failureOption: none(),
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page: state.page + 1,
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hasReachedMax: tables.tables.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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