feat: integrate ErrorService for consistent error display and standardize bloc error messages.

lib/repositories/balance_repository.dart

@@ -37,9 +37,13 @@ class BalanceRepository {
         totalExpenses: totalExpenses,
         calculatedAt: DateTime.now(),
       );
-    } catch (e) {
-      _errorService.logError('BalanceRepository', 'Erreur calcul balance: $e');
-      rethrow;
+    } catch (e, stackTrace) {
+      _errorService.logError(
+        'BalanceRepository',
+        'Erreur calcul balance: $e',
+        stackTrace,
+      );
+      throw Exception('Impossible de calculer la balance');
     }
   }
 
@@ -50,9 +54,13 @@ class BalanceRepository {
           .first;
 
       return _calculateUserBalances(expenses);
-    } catch (e) {
-      _errorService.logError('BalanceRepository', 'Erreur calcul user balances: $e');
-      rethrow;
+    } catch (e, stackTrace) {
+      _errorService.logError(
+        'BalanceRepository',
+        'Erreur calcul user balances: $e',
+        stackTrace,
+      );
+      throw Exception('Impossible de calculer les balances utilisateurs');
     }
   }
 
@@ -65,19 +73,17 @@ class BalanceRepository {
       if (expense.isArchived) continue;
 
       // Ajouter le payeur
-      userBalanceMap.putIfAbsent(expense.paidById, () => {
-        'name': expense.paidByName,
-        'paid': 0.0,
-        'owed': 0.0,
-      });
+      userBalanceMap.putIfAbsent(
+        expense.paidById,
+        () => {'name': expense.paidByName, 'paid': 0.0, 'owed': 0.0},
+      );
 
       // Ajouter les participants
       for (final split in expense.splits) {
-        userBalanceMap.putIfAbsent(split.userId, () => {
-          'name': split.userName,
-          'paid': 0.0,
-          'owed': 0.0,
-        });
+        userBalanceMap.putIfAbsent(
+          split.userId,
+          () => {'name': split.userName, 'paid': 0.0, 'owed': 0.0},
+        );
       }
     }
 
@@ -100,7 +106,7 @@ class BalanceRepository {
       final data = entry.value;
       final paid = data['paid'] as double;
       final owed = data['owed'] as double;
-      
+
       return UserBalance(
         userId: userId,
         userName: data['name'] as String,
@@ -114,7 +120,7 @@ class BalanceRepository {
   // Algorithme d'optimisation des règlements
   List<Settlement> _calculateOptimalSettlements(List<UserBalance> balances) {
     final settlements = <Settlement>[];
-    
+
     // Séparer les créditeurs et débiteurs
     final creditors = balances.where((b) => b.shouldReceive).toList();
     final debtors = balances.where((b) => b.shouldPay).toList();
@@ -125,10 +131,10 @@ class BalanceRepository {
 
     // Créer des copies mutables des montants
     final creditorsRemaining = Map.fromEntries(
-      creditors.map((c) => MapEntry(c.userId, c.balance))
+      creditors.map((c) => MapEntry(c.userId, c.balance)),
     );
     final debtorsRemaining = Map.fromEntries(
-      debtors.map((d) => MapEntry(d.userId, -d.balance))
+      debtors.map((d) => MapEntry(d.userId, -d.balance)),
     );
 
     // Algorithme glouton pour minimiser le nombre de transactions
@@ -139,15 +145,20 @@ class BalanceRepository {
 
         if (creditAmount <= 0.01 || debtAmount <= 0.01) continue;
 
-        final settlementAmount = [creditAmount, debtAmount].reduce((a, b) => a < b ? a : b);
+        final settlementAmount = [
+          creditAmount,
+          debtAmount,
+        ].reduce((a, b) => a < b ? a : b);
 
-        settlements.add(Settlement(
-          fromUserId: debtor.userId,
-          fromUserName: debtor.userName,
-          toUserId: creditor.userId,
-          toUserName: creditor.userName,
-          amount: settlementAmount,
-        ));
+        settlements.add(
+          Settlement(
+            fromUserId: debtor.userId,
+            fromUserName: debtor.userName,
+            toUserId: creditor.userId,
+            toUserName: creditor.userName,
+            amount: settlementAmount,
+          ),
+        );
 
         creditorsRemaining[creditor.userId] = creditAmount - settlementAmount;
         debtorsRemaining[debtor.userId] = debtAmount - settlementAmount;
@@ -156,4 +167,4 @@ class BalanceRepository {
 
     return settlements;
   }
-}
+}