fix(search): respect locale and coin precision

diff --git a/lib/db/isar/main_db.dart b/lib/db/isar/main_db.dart
index e8efa7d..b304442 100644
--- a/lib/db/isar/main_db.dart
+++ b/lib/db/isar/main_db.dart
@@ -10,7 +10,6 @@
 
 import 'dart:io';
 
-import 'package:decimal/decimal.dart';
 import 'package:isar_community/isar.dart';
 import 'package:tuple/tuple.dart';
 
diff --git a/lib/db/queries/queries.dart b/lib/db/queries/queries.dart
index c8bbe73..89f96fa 100644
--- a/lib/db/queries/queries.dart
+++ b/lib/db/queries/queries.dart
@@ -42,12 +42,11 @@ extension MainDBQueries on MainDB {
     required CCFilter filter,
     required CCSortDescriptor sort,
     required String searchTerm,
+    required String locale,
     required CryptoCurrency cryptoCurrency,
   }) {
     var preSort = getUTXOs(walletId).filter().group((q) {
-      final qq = q.group(
-        (q) => q.usedIsNull().or().usedEqualTo(false),
-      );
+      final qq = q.group((q) => q.usedIsNull().or().usedEqualTo(false));
       switch (filter) {
         case CCFilter.frozen:
           return qq.and().isBlockedEqualTo(true);
@@ -59,39 +58,36 @@ extension MainDBQueries on MainDB {
     });
 
     if (searchTerm.isNotEmpty) {
-      preSort = preSort.and().group(
-        (q) {
-          var qq = q.addressContains(searchTerm, caseSensitive: false);
-
-          qq = qq.or().nameContains(searchTerm, caseSensitive: false);
-          qq = qq.or().group(
-                (q) => q
-                    .isBlockedEqualTo(true)
-                    .and()
-                    .blockedReasonContains(searchTerm, caseSensitive: false),
-              );
-
-          qq = qq.or().txidContains(searchTerm, caseSensitive: false);
-          qq = qq.or().blockHashContains(searchTerm, caseSensitive: false);
-
-          final maybeDecimal = Decimal.tryParse(searchTerm);
-          if (maybeDecimal != null) {
-            qq = qq.or().valueEqualTo(
-                  Amount.fromDecimal(
-                    maybeDecimal,
-                    fractionDigits: cryptoCurrency.fractionDigits,
-                  ).raw.toInt(),
-                );
-          }
-
-          final maybeInt = int.tryParse(searchTerm);
-          if (maybeInt != null) {
-            qq = qq.or().valueEqualTo(maybeInt);
-          }
-
-          return qq;
-        },
-      );
+      preSort = preSort.and().group((q) {
+        var qq = q.addressContains(searchTerm, caseSensitive: false);
+
+        qq = qq.or().nameContains(searchTerm, caseSensitive: false);
+        qq = qq.or().group(
+          (q) => q
+              .isBlockedEqualTo(true)
+              .and()
+              .blockedReasonContains(searchTerm, caseSensitive: false),
+        );
+
+        qq = qq.or().txidContains(searchTerm, caseSensitive: false);
+        qq = qq.or().blockHashContains(searchTerm, caseSensitive: false);
+
+        final maybeAmount = Amount.tryParseEditableAmount(
+          searchTerm,
+          locale: locale,
+          fractionDigits: cryptoCurrency.fractionDigits,
+        );
+        if (maybeAmount != null) {
+          qq = qq.or().valueEqualTo(maybeAmount.raw.toInt());
+        }
+
+        final maybeInt = int.tryParse(searchTerm);
+        if (maybeInt != null) {
+          qq = qq.or().valueEqualTo(maybeInt);
+        }
+
+        return qq;
+      });
     }
 
     final List<Id> ids;
@@ -114,12 +110,11 @@ extension MainDBQueries on MainDB {
     required CCFilter filter,
     required CCSortDescriptor sort,
     required String searchTerm,
+    required String locale,
     required CryptoCurrency cryptoCurrency,
   }) {
     var preSort = getUTXOs(walletId).filter().group((q) {
-      final qq = q.group(
-        (q) => q.usedIsNull().or().usedEqualTo(false),
-      );
+      final qq = q.group((q) => q.usedIsNull().or().usedEqualTo(false));
       switch (filter) {
         case CCFilter.frozen:
           return qq.and().isBlockedEqualTo(true);
@@ -131,39 +126,36 @@ extension MainDBQueries on MainDB {
     });
 
     if (searchTerm.isNotEmpty) {
-      preSort = preSort.and().group(
-        (q) {
-          var qq = q.addressContains(searchTerm, caseSensitive: false);
-
-          qq = qq.or().nameContains(searchTerm, caseSensitive: false);
-          qq = qq.or().group(
-                (q) => q
-                    .isBlockedEqualTo(true)
-                    .and()
-                    .blockedReasonContains(searchTerm, caseSensitive: false),
-              );
-
-          qq = qq.or().txidContains(searchTerm, caseSensitive: false);
-          qq = qq.or().blockHashContains(searchTerm, caseSensitive: false);
-
-          final maybeDecimal = Decimal.tryParse(searchTerm);
-          if (maybeDecimal != null) {
-            qq = qq.or().valueEqualTo(
-                  Amount.fromDecimal(
-                    maybeDecimal,
-                    fractionDigits: cryptoCurrency.fractionDigits,
-                  ).raw.toInt(),
-                );
-          }
-
-          final maybeInt = int.tryParse(searchTerm);
-          if (maybeInt != null) {
-            qq = qq.or().valueEqualTo(maybeInt);
-          }
-
-          return qq;
-        },
-      );
+      preSort = preSort.and().group((q) {
+        var qq = q.addressContains(searchTerm, caseSensitive: false);
+
+        qq = qq.or().nameContains(searchTerm, caseSensitive: false);
+        qq = qq.or().group(
+          (q) => q
+              .isBlockedEqualTo(true)
+              .and()
+              .blockedReasonContains(searchTerm, caseSensitive: false),
+        );
+
+        qq = qq.or().txidContains(searchTerm, caseSensitive: false);
+        qq = qq.or().blockHashContains(searchTerm, caseSensitive: false);
+
+        final maybeAmount = Amount.tryParseEditableAmount(
+          searchTerm,
+          locale: locale,
+          fractionDigits: cryptoCurrency.fractionDigits,
+        );
+        if (maybeAmount != null) {
+          qq = qq.or().valueEqualTo(maybeAmount.raw.toInt());
+        }
+
+        final maybeInt = int.tryParse(searchTerm);
+        if (maybeInt != null) {
+          qq = qq.or().valueEqualTo(maybeInt);
+        }
+
+        return qq;
+      });
     }
 
     final List<UTXO> utxos;
diff --git a/lib/pages/coin_control/coin_control_view.dart b/lib/pages/coin_control/coin_control_view.dart
index 7960733..d6954cc 100644
--- a/lib/pages/coin_control/coin_control_view.dart
+++ b/lib/pages/coin_control/coin_control_view.dart
@@ -18,6 +18,7 @@ import 'package:tuple/tuple.dart';
 
 import '../../db/isar/main_db.dart';
 import '../../models/isar/models/isar_models.dart';
+import '../../providers/global/locale_provider.dart';
 import '../../providers/global/wallets_provider.dart';
 import '../../themes/stack_colors.dart';
 import '../../utilities/amount/amount.dart';
@@ -132,6 +133,9 @@ class _CoinControlViewState extends ConsumerState<CoinControlView> {
 
     final coin = ref.watch(pWalletCoin(widget.walletId));
     final currentHeight = ref.watch(pWalletChainHeight(widget.walletId));
+    final locale = ref.watch(
+      localeServiceChangeNotifierProvider.select((value) => value.locale),
+    );
 
     if (_sort == CCSortDescriptor.address && !_isSearching) {
       _list = null;
@@ -140,6 +144,7 @@ class _CoinControlViewState extends ConsumerState<CoinControlView> {
         filter: CCFilter.all,
         sort: _sort,
         searchTerm: "",
+        locale: locale,
         cryptoCurrency: coin,
       );
     } else {
@@ -154,6 +159,7 @@ class _CoinControlViewState extends ConsumerState<CoinControlView> {
                 : CCFilter.available,
         sort: _sort,
         searchTerm: _isSearching ? searchController.text : "",
+        locale: locale,
         cryptoCurrency: coin,
       );
     }
diff --git a/lib/pages/wallet_view/transaction_views/transaction_search_filter_view.dart b/lib/pages/wallet_view/transaction_views/transaction_search_filter_view.dart
index cff1054..28ce036 100644
--- a/lib/pages/wallet_view/transaction_views/transaction_search_filter_view.dart
+++ b/lib/pages/wallet_view/transaction_views/transaction_search_filter_view.dart
@@ -8,7 +8,6 @@
  *
  */
 
-import 'package:decimal/decimal.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
@@ -18,6 +17,7 @@ import '../../../providers/ui/transaction_filter_provider.dart';
 import '../../../themes/stack_colors.dart';
 import '../../../themes/theme_providers.dart';
 import '../../../utilities/amount/amount.dart';
+import '../../../utilities/amount/amount_field_relocalization.dart';
 import '../../../utilities/amount/amount_formatter.dart';
 import '../../../utilities/amount/amount_input_formatter.dart';
 import '../../../utilities/constants.dart';
@@ -36,6 +36,21 @@ import '../../../widgets/rounded_white_container.dart';
 import '../../../widgets/stack_text_field.dart';
 import '../../../widgets/textfield_icon_button.dart';
 
+({bool isValid, Amount? amount}) parseTransactionFilterAmountInput({
+  required String text,
+  required String locale,
+  required AmountFormatter formatter,
+}) {
+  final decimalSeparator =
+      Util.getSymbolsFor(locale: locale)?.DECIMAL_SEP ?? ".";
+  if (text.isEmpty || text == decimalSeparator) {
+    return (isValid: true, amount: null);
+  }
+
+  final amount = formatter.tryParseEditable(text);
+  return (isValid: amount != null, amount: amount);
+}
+
 class TransactionSearchFilterView extends ConsumerStatefulWidget {
   const TransactionSearchFilterView({super.key, required this.coin});
 
@@ -77,7 +92,7 @@ class _TransactionSearchViewState
           ? ""
           : ref
                 .read(pAmountFormatter(widget.coin))
-                .format(filterState.amount!, withUnitName: false);
+                .formatEditable(filterState.amount!);
 
       _amountTextEditingController.text = amount;
     }
@@ -100,6 +115,10 @@ class _TransactionSearchViewState
 
   @override
   Widget build(BuildContext context) {
+    listenForAmountRelocalization(
+      ref.listen,
+      controllers: [_amountTextEditingController],
+    );
     if (Util.isDesktop) {
       return DesktopDialog(
         maxWidth: 576,
@@ -630,16 +649,14 @@ class _TransactionSearchViewState
   }
 
   Future<void> _onApplyPressed() async {
-    final amountText = _amountTextEditingController.text;
-    Amount? amount;
-    if (amountText.isNotEmpty && !(amountText == "," || amountText == ".")) {
-      amount = amountText.contains(",")
-          ? Decimal.parse(
-              amountText.replaceFirst(",", "."),
-            ).toAmount(fractionDigits: widget.coin.fractionDigits)
-          : Decimal.parse(
-              amountText,
-            ).toAmount(fractionDigits: widget.coin.fractionDigits);
+    final locale = ref.read(localeServiceChangeNotifierProvider).locale;
+    final parsedAmount = parseTransactionFilterAmountInput(
+      text: _amountTextEditingController.text,
+      locale: locale,
+      formatter: ref.read(pAmountFormatter(widget.coin)),
+    );
+    if (!parsedAmount.isValid) {
+      return;
     }
 
     final TransactionFilter filter = TransactionFilter(
@@ -648,7 +665,7 @@ class _TransactionSearchViewState
       trade: _isActiveTradeCheckbox,
       from: _selectedFromDate,
       to: _selectedToDate,
-      amount: amount,
+      amount: parsedAmount.amount,
       keyword: _keywordTextEditingController.text,
     );
 
diff --git a/lib/pages_desktop_specific/coin_control/desktop_coin_control_use_dialog.dart b/lib/pages_desktop_specific/coin_control/desktop_coin_control_use_dialog.dart
index d095935..57295f4 100644
--- a/lib/pages_desktop_specific/coin_control/desktop_coin_control_use_dialog.dart
+++ b/lib/pages_desktop_specific/coin_control/desktop_coin_control_use_dialog.dart
@@ -18,6 +18,7 @@ import 'package:isar_community/isar.dart';
 import '../../db/isar/main_db.dart';
 import '../../models/input.dart';
 import '../../models/isar/models/blockchain_data/utxo.dart';
+import '../../providers/global/locale_provider.dart';
 import '../../themes/coin_icon_provider.dart';
 import '../../themes/stack_colors.dart';
 import '../../utilities/amount/amount.dart';
@@ -108,6 +109,10 @@ class _DesktopCoinControlUseDialogState
   Widget build(BuildContext context) {
     debugPrint("BUILD: $runtimeType");
 
+    final locale = ref.watch(
+      localeServiceChangeNotifierProvider.select((value) => value.locale),
+    );
+
     if (_sort == CCSortDescriptor.address) {
       _list = null;
       _map = MainDB.instance.queryUTXOsGroupedByAddressSync(
@@ -115,6 +120,7 @@ class _DesktopCoinControlUseDialogState
         filter: _filter,
         sort: _sort,
         searchTerm: _searchString,
+        locale: locale,
         cryptoCurrency: coin,
       );
     } else {
@@ -124,6 +130,7 @@ class _DesktopCoinControlUseDialogState
         filter: _filter,
         sort: _sort,
         searchTerm: _searchString,
+        locale: locale,
         cryptoCurrency: coin,
       );
     }
diff --git a/lib/pages_desktop_specific/coin_control/desktop_coin_control_view.dart b/lib/pages_desktop_specific/coin_control/desktop_coin_control_view.dart
index 3489f6c..e9f2b93 100644
--- a/lib/pages_desktop_specific/coin_control/desktop_coin_control_view.dart
+++ b/lib/pages_desktop_specific/coin_control/desktop_coin_control_view.dart
@@ -17,6 +17,7 @@ import 'package:isar_community/isar.dart';
 
 import '../../db/isar/main_db.dart';
 import '../../models/isar/models/blockchain_data/utxo.dart';
+import '../../providers/global/locale_provider.dart';
 import '../../themes/coin_icon_provider.dart';
 import '../../themes/stack_colors.dart';
 import '../../utilities/assets.dart';
@@ -84,6 +85,10 @@ class _DesktopCoinControlViewState
   Widget build(BuildContext context) {
     debugPrint("BUILD: $runtimeType");
 
+    final locale = ref.watch(
+      localeServiceChangeNotifierProvider.select((value) => value.locale),
+    );
+
     if (_sort == CCSortDescriptor.address) {
       _list = null;
       _map = MainDB.instance.queryUTXOsGroupedByAddressSync(
@@ -91,6 +96,7 @@ class _DesktopCoinControlViewState
         filter: _filter,
         sort: _sort,
         searchTerm: _searchString,
+        locale: locale,
         cryptoCurrency: coin,
       );
     } else {
@@ -100,6 +106,7 @@ class _DesktopCoinControlViewState
         filter: _filter,
         sort: _sort,
         searchTerm: _searchString,
+        locale: locale,
         cryptoCurrency: coin,
       );
     }
diff --git a/test/pages/wallet_view/transaction_views/transaction_search_filter_view_test.dart b/test/pages/wallet_view/transaction_views/transaction_search_filter_view_test.dart
new file mode 100644
index 0000000..b4969a4
--- /dev/null
+++ b/test/pages/wallet_view/transaction_views/transaction_search_filter_view_test.dart
@@ -0,0 +1,67 @@
+import "package:flutter_test/flutter_test.dart";
+import "package:stackwallet/pages/wallet_view/transaction_views/transaction_search_filter_view.dart";
+import "package:stackwallet/utilities/amount/amount_formatter.dart";
+import "package:stackwallet/utilities/amount/amount_unit.dart";
+import "package:stackwallet/wallets/crypto_currency/crypto_currency.dart";
+
+void main() {
+  AmountFormatter formatter(String locale) => AmountFormatter(
+    unit: AmountUnit.normal,
+    locale: locale,
+    coin: Bitcoin(CryptoCurrencyNetwork.main),
+    maxDecimals: 8,
+  );
+
+  test("transaction filter distinguishes empty from malformed amounts", () {
+    for (final text in ["", "."]) {
+      expect(
+        parseTransactionFilterAmountInput(
+          text: text,
+          locale: "en_US",
+          formatter: formatter("en_US"),
+        ),
+        (isValid: true, amount: null),
+        reason: text,
+      );
+    }
+
+    final trailingSeparator = parseTransactionFilterAmountInput(
+      text: "1.",
+      locale: "en_US",
+      formatter: formatter("en_US"),
+    );
+    expect(trailingSeparator.isValid, isTrue);
+    expect(trailingSeparator.amount?.raw, BigInt.from(100000000));
+
+    for (final text in ["1..", "1.2."]) {
+      expect(
+        parseTransactionFilterAmountInput(
+          text: text,
+          locale: "en_US",
+          formatter: formatter("en_US"),
+        ).isValid,
+        isFalse,
+        reason: text,
+      );
+    }
+  });
+
+  test("transaction filter uses the locale separator", () {
+    expect(
+      parseTransactionFilterAmountInput(
+        text: ",",
+        locale: "de_DE",
+        formatter: formatter("de_DE"),
+      ),
+      (isValid: true, amount: null),
+    );
+    expect(
+      parseTransactionFilterAmountInput(
+        text: "1,,",
+        locale: "de_DE",
+        formatter: formatter("de_DE"),
+      ).isValid,
+      isFalse,
+    );
+  });
+}