feat: Add logger service and improve expense dialog with enhanced receipt management and calculation logic.

lib/models/expense.dart

@@ -4,107 +4,114 @@ import 'package:flutter/material.dart';
 import 'expense_split.dart';
 
 /// Enumeration of supported currencies for expenses.
-/// 
+///
 /// Each currency includes both a display symbol and standard currency code.
 enum ExpenseCurrency {
   /// Euro currency
   eur('€', 'EUR'),
-  /// US Dollar currency  
+
+  /// US Dollar currency
   usd('\$', 'USD'),
+
   /// British Pound currency
   gbp('£', 'GBP');
 
   const ExpenseCurrency(this.symbol, this.code);
-  
+
   /// Currency symbol for display (e.g., €, $, £)
   final String symbol;
-  
+
   /// Standard currency code (e.g., EUR, USD, GBP)
   final String code;
 }
 
 /// Enumeration of expense categories with display names and icons.
-/// 
+///
 /// Provides predefined categories for organizing travel expenses.
 enum ExpenseCategory {
   /// Restaurant and food expenses
   restaurant('Restaurant', Icons.restaurant),
+
   /// Transportation expenses
   transport('Transport', Icons.directions_car),
+
   /// Accommodation and lodging expenses
   accommodation('Accommodation', Icons.hotel),
+
   /// Entertainment and activity expenses
   entertainment('Entertainment', Icons.local_activity),
+
   /// Shopping expenses
   shopping('Shopping', Icons.shopping_bag),
+
   /// Other miscellaneous expenses
   other('Other', Icons.category);
 
   const ExpenseCategory(this.displayName, this.icon);
-  
+
   /// Human-readable display name for the category
   final String displayName;
-  
+
   /// Icon representing the category
   final IconData icon;
 }
 
 /// Model representing a travel expense.
-/// 
+///
 /// This class encapsulates all information about an expense including
 /// amount, currency, category, who paid, how it's split among participants,
 /// and receipt information. It extends [Equatable] for value comparison.
 class Expense extends Equatable {
   /// Unique identifier for the expense
   final String id;
-  
+
   /// ID of the group this expense belongs to
   final String groupId;
-  
+
   /// Description of the expense
   final String description;
-  
+
   /// Amount of the expense in the original currency
   final double amount;
-  
+
   /// Currency of the expense
   final ExpenseCurrency currency;
-  
+
   /// Amount converted to EUR for standardized calculations
   final double amountInEur;
-  
+
   /// Category of the expense
   final ExpenseCategory category;
-  
+
   /// ID of the user who paid for this expense
   final String paidById;
-  
+
   /// Name of the user who paid for this expense
   final String paidByName;
-  
+
   /// Date when the expense occurred
   final DateTime date;
-  
+
   /// Timestamp when the expense was created
   final DateTime createdAt;
-  
+
   /// Timestamp when the expense was last edited (null if never edited)
   final DateTime? editedAt;
-  
+
   /// Whether this expense has been edited after creation
   final bool isEdited;
-  
+
   /// Whether this expense has been archived
   final bool isArchived;
-  
+
   /// URL to the receipt image (optional)
   final String? receiptUrl;
-  
+
   /// List of expense splits showing how the cost is divided
   final List<ExpenseSplit> splits;
 
   /// Creates a new [Expense] instance.
-  /// 
+  ///
   /// All parameters except [editedAt] and [receiptUrl] are required.
   const Expense({
     required this.id,
@@ -144,13 +151,17 @@ class Expense extends Equatable {
       paidByName: map['paidByName'] ?? '',
       date: _parseDateTime(map['date']),
       createdAt: _parseDateTime(map['createdAt']),
-      editedAt: map['editedAt'] != null ? _parseDateTime(map['editedAt']) : null,
+      editedAt: map['editedAt'] != null
+          ? _parseDateTime(map['editedAt'])
+          : null,
       isEdited: map['isEdited'] ?? false,
       isArchived: map['isArchived'] ?? false,
       receiptUrl: map['receiptUrl'],
-      splits: (map['splits'] as List?)
-          ?.map((s) => ExpenseSplit.fromMap(s))
-          .toList() ?? [],
+      splits:
+          (map['splits'] as List?)
+              ?.map((s) => ExpenseSplit.fromMap(s))
+              .toList() ??
+          [],
     );
   }
 
@@ -243,25 +254,36 @@ class Expense extends Equatable {
 
   // Marquer comme archivé
   Expense copyWithArchived() {
-    return copyWith(
-      isArchived: true,
-    );
+    return copyWith(isArchived: true);
   }
 
   // Ajouter/mettre à jour l'URL du reçu
   Expense copyWithReceipt(String receiptUrl) {
-    return copyWith(
-      receiptUrl: receiptUrl,
-    );
+    return copyWith(receiptUrl: receiptUrl);
   }
 
   // Mettre à jour les splits
   Expense copyWithSplits(List<ExpenseSplit> newSplits) {
-    return copyWith(
-      splits: newSplits,
-    );
+    return copyWith(splits: newSplits);
   }
 
   @override
-  List<Object?> get props => [id];
-}
+  List<Object?> get props => [
+    id,
+    groupId,
+    description,
+    amount,
+    currency,
+    amountInEur,
+    category,
+    paidById,
+    paidByName,
+    date,
+    createdAt,
+    editedAt,
+    isEdited,
+    isArchived,
+    receiptUrl,
+    splits,
+  ];
+}