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exchange view amount string provider fix

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This commit is contained in:
julian-CStack 2023-07-19 08:30:15 -06:00
parent e74b0babf6
commit d867270aac
3 changed files with 50 additions and 23 deletions
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30
lib/pages/exchange_view/exchange_form.dart
View file

@ -35,6 +35,7 @@ import 'package:stackwallet/services/exchange/exchange_data_loading_service.dart
import 'package:stackwallet/services/exchange/majestic_bank/majestic_bank_exchange.dart';
import 'package:stackwallet/services/exchange/trocador/trocador_exchange.dart';
import 'package:stackwallet/themes/stack_colors.dart';
import 'package:stackwallet/utilities/amount/amount_unit.dart';
import 'package:stackwallet/utilities/assets.dart';
import 'package:stackwallet/utilities/constants.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
@ -160,26 +161,15 @@ class _ExchangeFormState extends ConsumerState<ExchangeForm> {
if (value == null) {
return null;
}
try {
// wtf Dart?????
// This turns "99999999999999999999" into 100000000000000000000.0
// final numFromLocalised = NumberFormat.decimalPattern(
// ref.read(localeServiceChangeNotifierProvider).locale)
// .parse(value);
// return Decimal.tryParse(numFromLocalised.toString());
try {
return Decimal.parse(value);
} catch (_) {
try {
return Decimal.parse(value.replaceAll(",", "."));
} catch (_) {
rethrow;
}
}
} catch (_) {
return null;
}
return AmountUnit.normal
.tryParse(
value,
locale: ref.read(localeServiceChangeNotifierProvider).locale,
coin: Coin.bitcoin, // dummy value (not used due to override)
overrideWithDecimalPlacesFromString: true,
)
?.decimal;
}
Future<AggregateCurrency> _getAggregateCurrency(Currency currency) async {
@ -824,7 +814,7 @@ class _ExchangeFormState extends ConsumerState<ExchangeForm> {
});
ref.listen(efEstimateProvider.notifier, (previous, next) {
final estimate = (next as StateController<Estimate?>).state;
final estimate = (next).state;
if (ref.read(efReversedProvider)) {
updateSend(estimate);
} else {

38
lib/providers/exchange/exchange_form_state_provider.dart
View file

@ -13,8 +13,12 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:stackwallet/models/exchange/active_pair.dart';
import 'package:stackwallet/models/exchange/response_objects/estimate.dart';
import 'package:stackwallet/models/exchange/response_objects/range.dart';
import 'package:stackwallet/providers/global/locale_provider.dart';
import 'package:stackwallet/services/exchange/exchange.dart';
import 'package:stackwallet/services/exchange/exchange_response.dart';
import 'package:stackwallet/utilities/amount/amount.dart';
import 'package:stackwallet/utilities/amount/amount_unit.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/enums/exchange_rate_type_enum.dart';
import 'package:tuple/tuple.dart';
@ -44,7 +48,22 @@ final efSendAmountStringProvider = StateProvider<String>((ref) {
if (refreshing && reversed) {
return "-";
} else {
return ref.watch(efSendAmountProvider)?.toString() ?? "";
final decimal = ref.watch(efSendAmountProvider);
String string = "";
if (decimal != null) {
final amount = Amount.fromDecimal(decimal, fractionDigits: decimal.scale);
final locale = ref.watch(localeServiceChangeNotifierProvider).locale;
string = AmountUnit.normal.displayAmount(
amount: amount,
locale: locale,
coin: Coin
.nano, // use nano just to ensure decimal.scale < Coin.value.decimals
withUnitName: false,
maxDecimalPlaces: decimal.scale,
);
}
return string;
}
});
final efReceiveAmountStringProvider = StateProvider<String>((ref) {
@ -54,7 +73,22 @@ final efReceiveAmountStringProvider = StateProvider<String>((ref) {
if (refreshing && reversed == false) {
return "-";
} else {
return ref.watch(efReceiveAmountProvider)?.toString() ?? "";
final decimal = ref.watch(efReceiveAmountProvider);
String string = "";
if (decimal != null) {
final amount = Amount.fromDecimal(decimal, fractionDigits: decimal.scale);
final locale = ref.watch(localeServiceChangeNotifierProvider).locale;
string = AmountUnit.normal.displayAmount(
amount: amount,
locale: locale,
coin: Coin
.nano, // use nano just to ensure decimal.scale < Coin.value.decimals
withUnitName: false,
maxDecimalPlaces: decimal.scale,
);
}
return string;
}
});

5
lib/utilities/amount/amount_unit.dart
View file

@ -168,6 +168,7 @@ extension AmountUnitExt on AmountUnit {
required String locale,
required Coin coin,
EthContract? tokenContract,
bool overrideWithDecimalPlacesFromString = false,
}) {
final precisionLost = value.startsWith("~");
@ -201,7 +202,9 @@ extension AmountUnitExt on AmountUnit {
return null;
}
final decimalPlaces = tokenContract?.decimals ?? coin.decimals;
final decimalPlaces = overrideWithDecimalPlacesFromString
? decimal.scale
: tokenContract?.decimals ?? coin.decimals;
final realShift = math.min(shift, decimalPlaces);
return decimal.shift(0 - realShift).toAmount(fractionDigits: decimalPlaces);