transaction_page.dart

import 'dart:async';

import 'package:backdrop/backdrop.dart';
import 'package:cron/cron.dart';
import 'package:easy_debounce/easy_throttle.dart';
import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';

import '../../../data/models/app_cubit.dart';
import '../../../data/models/node_list_cubit.dart';
import '../../../data/models/transaction.dart';
import '../../../data/models/transaction_cubit.dart';
import '../../../data/models/transaction_state.dart';
import '../../../data/models/transactions_bloc.dart';
import '../../../g1/currency.dart';
import '../../../shared_prefs.dart';
import '../../logger.dart';
import '../../tutorial_keys.dart';
import '../../ui_helpers.dart';
import 'transaction_item.dart';

class TransactionsAndBalanceWidget extends StatefulWidget {
  const TransactionsAndBalanceWidget({super.key});

  @override
  State<TransactionsAndBalanceWidget> createState() =>
      _TransactionsAndBalanceWidgetState();
}

class _TransactionsAndBalanceWidgetState
    extends State<TransactionsAndBalanceWidget>
    with SingleTickerProviderStateMixin {
  final ScrollController _transScrollController = ScrollController();
  final TransactionsBloc _bloc = TransactionsBloc();
  late StreamSubscription<TransactionsState> _blocListingStateSubscription;
  late AppCubit appCubit;
  late NodeListCubit nodeListCubit;
  late TransactionCubit transCubit;

  final PagingController<String?, Transaction> _pagingController =
      PagingController<String?, Transaction>(firstPageKey: null);

  final PagingController<int, Transaction> _pendingController =
      PagingController<int, Transaction>(firstPageKey: 0);

  final int _pendingPageSize = 30;
  final Cron cron = Cron();
  static const double balanceFontSize = 36.0;

  @override
  void initState() {
    // Remove in the future
    appCubit = context.read<AppCubit>();
    transCubit = context.read<TransactionCubit>();
    nodeListCubit = context.read<NodeListCubit>();
    _bloc.init(transCubit, nodeListCubit, appCubit);
    _pagingController.addPageRequestListener((String? cursor) {
      _bloc.onPageRequestSink.add(cursor);
    });
    // We could've used StreamBuilder, but that would unnecessarily recreate
    // the entire [PagedSliverGrid] every time the state changes.
    // Instead, handling the subscription ourselves and updating only the
    // _pagingController is more efficient.
    _blocListingStateSubscription =
        _bloc.onNewListingState.listen((TransactionsState listingState) {
      _pagingController.value = PagingState<String?, Transaction>(
        nextPageKey: listingState.nextPageKey,