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feat: amount formatter and associated providers + prefs

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This commit is contained in:
julian 2023-05-29 11:42:11 -06:00
parent 838e623ff2
commit 86cd5bea3e
3 changed files with 118 additions and 0 deletions
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55
lib/utilities/amount/amount_formatter.dart Normal file
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@ -0,0 +1,55 @@
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:stackwallet/providers/global/locale_provider.dart';
import 'package:stackwallet/providers/global/prefs_provider.dart';
import 'package:stackwallet/utilities/amount/amount.dart';
import 'package:stackwallet/utilities/amount/amount_unit.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
final pAmountUnit = Provider.family<AmountUnit, Coin>(
(ref, coin) => ref.watch(
prefsChangeNotifierProvider.select(
(value) => value.amountUnit(coin),
),
),
);
final pMaxDecimals = Provider.family<int, Coin>(
(ref, coin) => ref.watch(
prefsChangeNotifierProvider.select(
(value) => value.maxDecimals(coin),
),
),
);
final pAmountFormatter = Provider.family<AmountFormatter, Coin>((ref, coin) {
return AmountFormatter(
unit: ref.watch(pAmountUnit(coin)),
locale: ref.watch(
localeServiceChangeNotifierProvider.select((value) => value.locale),
),
coin: coin,
maxDecimals: ref.watch(pMaxDecimals(coin)),
);
});
class AmountFormatter {
final AmountUnit unit;
final String locale;
final Coin coin;
final int maxDecimals;
AmountFormatter({
required this.unit,
required this.locale,
required this.coin,
required this.maxDecimals,
});
String format(Amount amount) {
return unit.displayAmount(
amount: amount,
locale: locale,
coin: coin,
maxDecimalPlaces: maxDecimals,
);
}
}

1
lib/utilities/amount/amount_unit.dart
View file

@ -6,6 +6,7 @@ import 'package:intl/number_symbols_data.dart';
import 'package:stackwallet/utilities/amount/amount.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
// preserve index order as index is used to store value in preferences
enum AmountUnit {
normal(0),
milli(3),

62
lib/utilities/prefs.dart
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@ -1,7 +1,9 @@
import 'package:flutter/cupertino.dart';
import 'package:stackwallet/db/hive/db.dart';
import 'package:stackwallet/utilities/amount/amount_unit.dart';
import 'package:stackwallet/utilities/constants.dart';
import 'package:stackwallet/utilities/enums/backup_frequency_type.dart';
import 'package:stackwallet/utilities/enums/coin_enum.dart';
import 'package:stackwallet/utilities/enums/languages_enum.dart';
import 'package:stackwallet/utilities/enums/sync_type_enum.dart';
import 'package:uuid/uuid.dart';
@ -46,6 +48,8 @@ class Prefs extends ChangeNotifier {
_themeId = await _getThemeId();
_systemBrightnessLightThemeId = await _getSystemBrightnessLightThemeId();
_systemBrightnessDarkThemeId = await _getSystemBrightnessDarkTheme();
await _setAmountUnits();
await _setMaxDecimals();
_initialized = true;
}
@ -796,4 +800,62 @@ class Prefs extends ChangeNotifier {
) as String? ??
"dark";
}
// coin amount unit settings
final Map<Coin, AmountUnit> _amountUnits = {};
AmountUnit amountUnit(Coin coin) => _amountUnits[coin] ?? AmountUnit.normal;
void updateAmountUnit({required Coin coin, required AmountUnit amountUnit}) {
if (this.amountUnit(coin) != amountUnit) {
DB.instance.put<dynamic>(
boxName: DB.boxNamePrefs,
key: "amountUnitFor${coin.name}",
value: amountUnit.index,
);
_amountUnits[coin] = amountUnit;
notifyListeners();
}
}
Future<void> _setAmountUnits() async {
for (final coin in Coin.values) {
final unitIndex = await DB.instance.get<dynamic>(
boxName: DB.boxNamePrefs,
key: "amountUnitFor${coin.name}",
) as int? ??
0; // 0 is "normal"
_amountUnits[coin] = AmountUnit.values[unitIndex];
}
}
// coin precision setting (max decimal places to show)
final Map<Coin, int> _amountDecimals = {};
int maxDecimals(Coin coin) => _amountDecimals[coin] ?? coin.decimals;
void updateMaxDecimals({required Coin coin, required int maxDecimals}) {
if (this.maxDecimals(coin) != maxDecimals) {
DB.instance.put<dynamic>(
boxName: DB.boxNamePrefs,
key: "maxDecimalsFor${coin.name}",
value: maxDecimals,
);
_amountDecimals[coin] = maxDecimals;
notifyListeners();
}
}
Future<void> _setMaxDecimals() async {
for (final coin in Coin.values) {
final decimals = await DB.instance.get<dynamic>(
boxName: DB.boxNamePrefs,
key: "maxDecimalsFor${coin.name}",
) as int? ??
coin.decimals;
_amountDecimals[coin] = decimals;
}
}
}