Dmitry
322c60a359
Доходы, ребалансировка, налоги, импорт, цели, здоровье данных, правила, транзакции, категории, cashflow, pending: новые виджеты и токены темы, dart format. Тесты подстроены под новые модели.
40 lines
1.5 KiB
Dart
40 lines
1.5 KiB
Dart
import 'package:decimal/decimal.dart';
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/// Weights travel as shares (`"0.60"` = 60 %) and are edited as percents. The conversion is
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/// exact on both sides: `Decimal`, never `double`, so 33,33 % round-trips unchanged and a
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/// set that sums to exactly 1 does not fail validation because of binary floating point.
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final _hundred = Decimal.fromInt(100);
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/// `"0.605"` → `"60,5"`; empty for anything unparseable.
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String shareToPercentText(String? share) {
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final d = share == null ? null : Decimal.tryParse(share);
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if (d == null) return '';
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final p = d * _hundred;
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final text = p == p.truncate() ? p.truncate().toString() : p.toString();
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return text.replaceAll('.', ',');
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}
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/// `"60,5"` → `"0.605"`; null when the text is not a number.
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String? percentTextToShare(String text) {
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final normalized = text.trim().replaceAll(',', '.').replaceAll(' ', '');
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if (normalized.isEmpty) return null;
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final d = Decimal.tryParse(normalized);
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if (d == null) return null;
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return (d / _hundred).toDecimal(scaleOnInfinitePrecision: 10).toString();
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}
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/// `"0.032"` → `"3,20 %"`, signed. Kept local to the rebalance screen because drift is a
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/// share, not a return, and the portfolio helper would sign it the same way by accident.
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String formatShareAsPercent(
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String? share, {
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bool signed = false,
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int digits = 2,
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}) {
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final d = share == null ? null : Decimal.tryParse(share);
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if (d == null) return '—';
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final p = (d * _hundred).toDouble();
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final sign = signed && p > 0 ? '+' : '';
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return '$sign${p.toStringAsFixed(digits).replaceAll('.', ',')} %';
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}
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