cake_wallet/lib/reactions/on_current_fiat_api_mode_change.dart

import 'package:cake_wallet/entities/fiat_api_mode.dart';
import 'package:mobx/mobx.dart';
import 'package:cake_wallet/core/fiat_conversion_service.dart';
import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart';
import 'package:cake_wallet/store/settings_store.dart';
import 'package:cake_wallet/store/app_store.dart';

ReactionDisposer? _onCurrentFiatCurrencyChangeDisposer;

void startCurrentFiatApiModeChangeReaction(AppStore appStore,
    SettingsStore settingsStore, FiatConversionStore fiatConversionStore) {
  _onCurrentFiatCurrencyChangeDisposer?.reaction.dispose();
  _onCurrentFiatCurrencyChangeDisposer = reaction(
      (_) => settingsStore.fiatApiMode, (FiatApiMode fiatApiMode) async {
    if (appStore.wallet == null || fiatApiMode == FiatApiMode.disabled) {
      return;
    }

    fiatConversionStore.prices[appStore.wallet!.currency] =
        await FiatConversionService.fetchPrice(
            crypto: appStore.wallet!.currency,
            fiat: settingsStore.fiatCurrency,
            torOnly: fiatApiMode == FiatApiMode.torOnly);
  });
}