step

lib/features/categories/provider.dart

@@ -1,44 +1,132 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../shared/models/transaction.dart';
 import '../dashboard/provider.dart';
+import '../settings/provider.dart';
+
+String _statsTargetCurrency(Ref ref) {
+  final index = ref.watch(activeAccountIndexProvider);
+  final accountsAsync = ref.watch(accountsProvider);
+  final globalCurrency = ref.watch(currencyProvider).code;
+
+  if (index > 0) {
+    final accounts = accountsAsync.value ?? [];
+    if (index <= accounts.length) {
+      return accounts[index - 1].currency;
+    }
+  }
+
+  return globalCurrency;
+}
+
+CurrencyInfo _statsCurrencyInfo(Ref ref) {
+  final code = _statsTargetCurrency(ref);
+  return CurrencyInfo(currencyMap[code]?.symbol ?? '\$', code);
+}
+
+List<Transaction> _statsScopedTransactions(Ref ref) {
+  final txs = ref.watch(accountFilteredTransactionsProvider);
+  final timeFilter = ref.watch(timeFilterProvider);
+  var filtered = txs.where((t) => t.category != 'Transfer');
+
+  if (timeFilter == TimeFilter.lastMonth) {
+    final now = DateTime.now();
+    filtered = filtered.where(
+      (t) => t.date.year == now.year && t.date.month == now.month,
+    );
+  }
+
+  return filtered.toList();
+}
+
+double _convertAmount(Ref ref, Transaction t) {
+  final exchange = ref.watch(exchangeRateServiceProvider);
+  return exchange.convert(
+    t.amount,
+    t.currencyCode,
+    _statsTargetCurrency(ref),
+  );
+}
+
+final statsCurrencyProvider = Provider<CurrencyInfo>((ref) {
+  return _statsCurrencyInfo(ref);
+});
+
+final statsIncomeTotalProvider = Provider<double>((ref) {
+  return _statsScopedTransactions(ref)
+      .where((t) => t.type == TransactionType.income)
+      .fold(0.0, (sum, t) => sum + _convertAmount(ref, t));
+});
+
+final statsExpenseTotalProvider = Provider<double>((ref) {
+  return _statsScopedTransactions(ref)
+      .where((t) => t.type == TransactionType.expense)
+      .fold(0.0, (sum, t) => sum + _convertAmount(ref, t));
+});
 
 final categoryExpenseProvider = Provider<Map<String, double>>((ref) {
-  final txsAsync = ref.watch(transactionsProvider);
-  final txs = txsAsync.value ?? [];
-  final filtered = txs.where((t) => t.type == TransactionType.expense);
-
   final map = <String, double>{};
-  for (final t in filtered) {
-    map[t.category] = (map[t.category] ?? 0) + t.amount;
+  for (final t in _statsScopedTransactions(ref)) {
+    if (t.type != TransactionType.expense) continue;
+    map[t.category] = (map[t.category] ?? 0) + _convertAmount(ref, t);
   }
   return map;
 });
 
 final categoryIncomeProvider = Provider<Map<String, double>>((ref) {
-  final txsAsync = ref.watch(transactionsProvider);
-  final txs = txsAsync.value ?? [];
-  final filtered = txs.where((t) => t.type == TransactionType.income);
-
   final map = <String, double>{};
-  for (final t in filtered) {
-    map[t.category] = (map[t.category] ?? 0) + t.amount;
+  for (final t in _statsScopedTransactions(ref)) {
+    if (t.type != TransactionType.income) continue;
+    map[t.category] = (map[t.category] ?? 0) + _convertAmount(ref, t);
   }
   return map;
 });
 
 final monthlyBreakdownProvider = Provider<List<MonthlyData>>((ref) {
-  final txsAsync = ref.watch(transactionsProvider);
-  final txs = txsAsync.value ?? [];
-  final filtered = txs.where((t) => t.type == TransactionType.expense);
-
+  final txs = ref.watch(accountFilteredTransactionsProvider);
+  final exchange = ref.watch(exchangeRateServiceProvider);
+  final target = _statsTargetCurrency(ref);
   final now = DateTime.now();
   final months = <MonthlyData>[];
 
   for (var i = 5; i >= 0; i--) {
     final month = DateTime(now.year, now.month - i, 1);
-    final total = filtered
-        .where((t) => t.date.year == month.year && t.date.month == month.month)
-        .fold(0.0, (sum, t) => sum + t.amount);
+    final total = txs
+        .where(
+          (t) =>
+              t.type == TransactionType.expense &&
+              t.category != 'Transfer' &&
+              t.date.year == month.year &&
+              t.date.month == month.month,
+        )
+        .fold(0.0, (sum, t) {
+          return sum + exchange.convert(t.amount, t.currencyCode, target);
+        });
+    months.add(MonthlyData(month: month, amount: total));
+  }
+
+  return months;
+});
+
+final monthlyIncomeBreakdownProvider = Provider<List<MonthlyData>>((ref) {
+  final txs = ref.watch(accountFilteredTransactionsProvider);
+  final exchange = ref.watch(exchangeRateServiceProvider);
+  final target = _statsTargetCurrency(ref);
+  final now = DateTime.now();
+  final months = <MonthlyData>[];
+
+  for (var i = 5; i >= 0; i--) {
+    final month = DateTime(now.year, now.month - i, 1);
+    final total = txs
+        .where(
+          (t) =>
+              t.type == TransactionType.income &&
+              t.category != 'Transfer' &&
+              t.date.year == month.year &&
+              t.date.month == month.month,
+        )
+        .fold(0.0, (sum, t) {
+          return sum + exchange.convert(t.amount, t.currencyCode, target);
+        });
     months.add(MonthlyData(month: month, amount: total));
   }