feat: Implement account management functionality with loading, creation, and error handling

lib/blocs/account/account_bloc.dart

@@ -0,0 +1,103 @@
+import 'dart:async';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:travel_mate/services/error_service.dart';
+import 'account_event.dart';
+import 'account_state.dart';
+import '../../repositories/account_repository.dart';
+import '../../data/models/account.dart';
+
+class AccountBloc extends Bloc<AccountEvent, AccountState> { 
+  final AccountRepository _repository;
+  StreamSubscription? _accountsSubscription;
+  final _errorService = ErrorService();
+
+  AccountBloc(this._repository) : super(AccountInitial()) {
+    on<LoadAccountsByUserId>(_onLoadAccountsByUserId);
+    on<_AccountsUpdated>(_onAccountsUpdated);
+    on<CreateAccount>(_onCreateAccount);
+    on<CreateAccountWithMembers>(_onCreateAccountWithMembers);
+  }
+
+  Future<void> _onLoadAccountsByUserId(
+    LoadAccountsByUserId event,
+    Emitter<AccountState> emit,
+  ) async {    
+    try {
+      emit(AccountLoading());
+      await _accountsSubscription?.cancel();
+      _accountsSubscription = _repository.getAccountByUserId(event.userId).listen(
+        (accounts) {
+          add(_AccountsUpdated(accounts));
+        },
+        onError: (error) {
+          add(_AccountsUpdated([], error: error.toString()));
+        },
+      );
+    } catch (e, stackTrace) {
+      _errorService.logError(e.toString(), stackTrace);
+      emit(AccountError(e.toString()));
+    }
+  }
+
+  Future<void> _onAccountsUpdated(
+    _AccountsUpdated event,
+    Emitter<AccountState> emit,
+  ) async {
+    if (event.error != null) {
+      _errorService.logError(event.error!, StackTrace.current);
+      emit(AccountError(event.error!));
+    } else {
+      emit(AccountsLoaded(event.accounts));
+    }
+  }
+
+  Future<void> _onCreateAccount(
+    CreateAccount event,
+    Emitter<AccountState> emit,
+  ) async {
+    try {
+      emit(AccountLoading());
+      final accountId = await _repository.createAccountWithMembers(
+        account: event.account,
+        members: [],
+      );
+      emit(AccountOperationSuccess('Compte créé avec succès. ID: $accountId'));
+    } catch (e, stackTrace) {
+      _errorService.logError(e.toString(), stackTrace);
+      emit(AccountError('Erreur lors de la création du compte: ${e.toString()}'));
+    }
+  }
+
+  Future<void> _onCreateAccountWithMembers(
+    CreateAccountWithMembers event,
+    Emitter<AccountState> emit,
+  ) async {
+    try{
+      emit(AccountLoading());
+      final accountId = await _repository.createAccountWithMembers(
+        account: event.account,
+        members: event.members,
+      );
+      emit(AccountOperationSuccess('Compte créé avec succès. ID: $accountId'));
+    } catch (e, stackTrace) {
+      _errorService.logError(e.toString(), stackTrace);
+      emit(AccountError('Erreur lors de la création du compte: ${e.toString()}'));
+    }
+  }
+
+  @override
+  Future<void> close() {
+    _accountsSubscription?.cancel();
+    return super.close();
+  }
+}
+
+class _AccountsUpdated extends AccountEvent {
+  final List<Account> accounts;
+  final String? error;
+
+  const _AccountsUpdated(this.accounts, {this.error});
+
+  @override
+  List<Object?> get props => [accounts, error];
+}

lib/blocs/account/account_event.dart

@@ -0,0 +1,63 @@
+import 'package:equatable/equatable.dart';
+import '../../data/models/account.dart';
+import '../../data/models/group_member.dart';
+
+abstract class AccountEvent extends Equatable {
+  const AccountEvent();
+
+  @override
+  List<Object?> get props => [];
+} 
+
+class LoadAccountsByUserId extends AccountEvent {
+  final String userId;
+
+  const LoadAccountsByUserId(this.userId);
+
+  @override
+  List<Object?> get props => [userId];
+}
+
+class LoadAccountsByTrip extends AccountEvent {
+  final String tripId;
+
+  const LoadAccountsByTrip(this.tripId);
+
+  @override
+  List<Object?> get props => [tripId];
+}
+
+class CreateAccount extends AccountEvent {
+  final Account account;
+
+  const CreateAccount(this.account);
+
+  @override
+  List<Object?> get props => [account];
+}
+
+class UpdateAccount extends AccountEvent {
+  final String accountId;
+  final Account account;
+
+  const UpdateAccount({
+    required this.accountId,
+    required this.account,
+  });
+
+  @override
+  List<Object?> get props => [accountId, account];
+}
+
+class CreateAccountWithMembers extends AccountEvent {
+  final Account account;
+  final List<GroupMember> members;
+
+  const CreateAccountWithMembers({
+    required this.account,
+    required this.members,
+  });
+
+  @override
+  List<Object?> get props => [account, members];
+}

lib/blocs/account/account_state.dart

@@ -0,0 +1,40 @@
+import 'package:equatable/equatable.dart';
+import '../../data/models/account.dart';
+
+abstract class AccountState extends Equatable {
+  const AccountState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class AccountInitial extends AccountState {}
+
+class AccountLoading extends AccountState {}
+
+class AccountsLoaded extends AccountState {
+  final List<Account> accounts;
+
+  const AccountsLoaded(this.accounts);
+
+  @override
+  List<Object?> get props => [accounts];
+}
+
+class AccountOperationSuccess extends AccountState {
+  final String message;
+
+  const AccountOperationSuccess(this.message);
+
+  @override
+  List<Object?> get props => [message];
+}
+
+class AccountError extends AccountState {
+  final String message;
+
+  const AccountError(this.message);
+
+  @override
+  List<Object?> get props => [message];
+}

lib/components/account/account_content.dart

@@ -1,143 +1,239 @@
 import 'package:flutter/material.dart';
+import 'package:travel_mate/blocs/user/user_bloc.dart';
+import '../../data/models/account.dart';
+import '../../blocs/account/account_bloc.dart';
+import '../../blocs/account/account_event.dart';
+import '../../blocs/account/account_state.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import '../../blocs/group/group_bloc.dart';
+import 'package:travel_mate/components/error/error_content.dart';
-import '../../blocs/group/group_state.dart';
+import '../../blocs/user/user_state.dart' as user_state;
-import '../../data/models/group.dart';
-import 'group_expenses_page.dart';
 
-class CountContent extends StatelessWidget {
+
-  const CountContent({super.key});
+class AccountContent extends StatefulWidget {
+  const AccountContent({super.key});
+
+  @override
+  State<AccountContent> createState() => _AccountContentState();
+}
+
+class _AccountContentState extends State<AccountContent> {
+  @override 
+  void initState() {
+    super.initState();
+    
+    // Charger immédiatement sans attendre le prochain frame
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _loadInitialData();
+    });
+  }
+
+  void _loadInitialData() {
+    try {
+      final userState = context.read<UserBloc>().state;
+      
+      if (userState is user_state.UserLoaded) {
+        final userId = userState.user.id;
+        context.read<AccountBloc>().add(LoadAccountsByUserId(userId));
+      } else {
+        throw Exception('Utilisateur non connecté');
+      }
+    } catch (e) {
+      ErrorContent(
+        message: 'Erreur lors du chargement des comptes: $e',
+        onRetry: () {},
+      );
+    }
+  }
 
   @override
   Widget build(BuildContext context) {
-    return BlocBuilder<GroupBloc, GroupState>(
+    return BlocBuilder<UserBloc, user_state.UserState>(
-      builder: (context, state) {
+      builder: (context, userState) {
-        if (state is GroupLoading) {
+        if (userState is user_state.UserLoading) {
-          return const Center(child: CircularProgressIndicator());
+          return const Scaffold(
+            body: Center(child: CircularProgressIndicator()),
+          );
         }
 
-        if (state is GroupLoaded) {
+        if (userState is user_state.UserError) {
-          if (state.groups.isEmpty) {
+          return ErrorContent(
-            return _buildEmptyState();
+            message: 'Erreur utilisateur: ${userState.message}',
+            onRetry: () {},
+          ); 
         }
 
-          return ListView.builder(
+        if (userState is! user_state.UserLoaded) {
-            padding: const EdgeInsets.all(16),
+          return const Scaffold(
-            itemCount: state.groups.length,
+            body: Center(child: Text('Utilisateur non connecté')),
-            itemBuilder: (context, index) {
+          );
-              final group = state.groups[index];
+        }
-              return _buildGroupCard(context, group);
+        final user = userState.user;
+
+        return BlocConsumer<AccountBloc, AccountState>(
+          listener: (context, accountState) {
+            if (accountState is AccountError) {
+              ErrorContent(
+                message: 'Erreur de chargement des comptes: ${accountState.message}',
+                onRetry: () {
+                  context.read<AccountBloc>().add(LoadAccountsByUserId(user.id));
+                },
+              );
+            }
+          },
+          builder: (context, accountState) {
+            return Scaffold(
+                body: SafeArea(child: _buildContent(accountState, user.id))
+              );
+          },
+        );
       },    
     );
   }
 
-        if (state is GroupError) {
+  Widget _buildContent(AccountState accountState, String userId) {
-          return Center(
+    if (accountState is AccountLoading) {
-            child: Column(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: [
-                const Icon(Icons.error, size: 64, color: Colors.red),
-                const SizedBox(height: 16),
-                Text(state.message),
-              ],
-            ),
-          );
-        }
-
-        return _buildEmptyState();
-      },
-    );
-  }
-
-  Widget _buildEmptyState() {
       return const Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
-          Icon(Icons.account_balance_wallet, size: 80, color: Colors.grey),
+            CircularProgressIndicator(),
             SizedBox(height: 16),
-          Text(
+            Text('Chargement des comptes...'),
-            'Aucun groupe',
+          ],        
+        ),     
+      );
+    } 
+    
+    if (accountState is AccountError) {
+      return ErrorContent(
+        message: 'Erreur de chargement des comptes...',
+        onRetry: () {
+          context.read<AccountBloc>().add(LoadAccountsByUserId(userId));
+        },
+      );
+    }
+
+    if (accountState is AccountsLoaded) {
+      if (accountState.accounts.isEmpty) {
+        return _buildEmptyState();
+      }
+
+      return _buildAccountsList(accountState.accounts, userId);
+    }
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          const Text('État inconnu'),
+          const SizedBox(height: 16),
+          ElevatedButton(
+            onPressed: () {
+              context.read<AccountBloc>().add(LoadAccountsByUserId(userId));
+            },
+            child: const Text('Charger les comptes'),
+          ),
+        ],
+      ),
+    );    
+  }
+
+  Widget _buildEmptyState() {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(32),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(Icons.account_balance_wallet, size: 80, color: Colors.grey),
+            const SizedBox(height: 16),
+            const Text(
+              'Aucun compte trouvé',
               style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
             ),
-          SizedBox(height: 8),
+            const SizedBox(height: 8),
-          Text(
+            const Text(
-            'Créez un groupe pour commencer à gérer vos dépenses',
+              'Les comptes sont créés automatiquement lorsque vous créez un voyage',
-            textAlign: TextAlign.center,
               style: TextStyle(fontSize: 14, color: Colors.grey),
+              textAlign: TextAlign.center,
             ),
           ],
         ),
+      ),
     );
   }
 
-  Widget _buildGroupCard(BuildContext context, Group group) {
+  Widget _buildAccountsList(List<Account> accounts, String userId) {
-    final isDark = Theme.of(context).brightness == Brightness.dark;
+    return RefreshIndicator(
+      onRefresh: () async {
+        context.read<AccountBloc>().add(LoadAccountsByUserId(userId));
+        await Future.delayed(const Duration(milliseconds: 500));
+      },
+      child: ListView(
+        padding: const EdgeInsets.all(16),
+        children: [
+          const Text(
+            'Mes comptes',
+            style: TextStyle(fontSize: 28, fontWeight: FontWeight.bold),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            'Gérez vos comptes de voyage',
+            style: TextStyle(fontSize: 14, color: Colors.grey[600]),
+          ),
+          const SizedBox(height: 24),
+          
+          ...accounts.map((account) {
+            return Padding(
+              padding: const EdgeInsets.only(bottom: 12),
+              child: _buildSimpleAccountCard(account),
+            );
+          })
+        ],
+      )
+    );
+  }
+  
+  Widget _buildSimpleAccountCard(Account account) {
+    try {
+      final colors = [Colors.blue, Colors.purple, Colors.green, Colors.orange];
+      final color = colors[account.name.hashCode.abs() % colors.length];
+
+      String memberInfo = '${account.members.length} membre${account.members.length > 1 ? 's' : ''}';
+
+      if(account.members.isNotEmpty){
+        final names = account.members
+            .take(2)
+            .map((m) => m.pseudo.isNotEmpty ? m.pseudo : m.firstName)
+            .join(', ');
+        memberInfo += '\n$names';
+      }
 
       return Card(
-      margin: const EdgeInsets.only(bottom: 12),
         elevation: 2,
-      shape: RoundedRectangleBorder(
+        child: ListTile(
-        borderRadius: BorderRadius.circular(12),
+          leading: CircleAvatar(
+            backgroundColor: color,
+            child: const Icon(Icons.account_balance_wallet, color: Colors.white),
           ),
-      child: InkWell(
+          title: Text(
-        onTap: () {
+            account.name,
-          Navigator.push(
+            style: const TextStyle(fontWeight: FontWeight.bold),
-            context,
+          ), 
-            MaterialPageRoute(
+          subtitle: Text(memberInfo),
-              builder: (context) => GroupExpensesPage(group: group),
+          trailing: const Icon(Icons.chevron_right),
+          onTap: () {},
         ),
       );
-        },
+    } catch (e) {
-        borderRadius: BorderRadius.circular(12),
+      return Card(
-        child: Padding(
+        color: Colors.red,
-          padding: const EdgeInsets.all(16),
+        child: const ListTile(
-          child: Row(
+          leading: Icon(Icons.error, color: Colors.red),
-            children: [
+          title: Text('Erreur d\'affichage'),
-              Container(
+        )
-                width: 56,
-                height: 56,
-                decoration: BoxDecoration(
-                  color: isDark ? Colors.blue[900] : Colors.blue[100],
-                  borderRadius: BorderRadius.circular(12),
-                ),
-                child: const Icon(
-                  Icons.group,
-                  color: Colors.blue,
-                  size: 32,
-                ),
-              ),
-              const SizedBox(width: 16),
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  children: [
-                    Text(
-                      group.name,
-                      style: const TextStyle(
-                        fontSize: 18,
-                        fontWeight: FontWeight.bold,
-                      ),
-                    ),
-                    const SizedBox(height: 4),
-                    Text(
-                      '${group.members.length} membre${group.members.length > 1 ? 's' : ''}',
-                      style: TextStyle(
-                        fontSize: 14,
-                        color: isDark ? Colors.grey[400] : Colors.grey[600],
-                      ),
-                    ),
-                  ],
-                ),
-              ),
-              Icon(
-                Icons.chevron_right,
-                color: isDark ? Colors.grey[400] : Colors.grey[600],
-              ),
-            ],
-          ),
-        ),
-      ),
       );
     }
+  }
+
+    
 }

lib/components/account/group_expenses_page.dart

@@ -1,116 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
-import '../../blocs/account/account_bloc.dart';
-import '../../blocs/account/account_event.dart';
-import '../../blocs/account/account_state.dart';
-import '../../blocs/user/user_bloc.dart';
-import '../../blocs/user/user_state.dart' as user_state;
-import '../../data/models/group.dart';
-import 'add_expense_dialog.dart';
-import 'balances_tab.dart';
-import 'expenses_tab.dart';
-import 'settlements_tab.dart';
-
-class GroupExpensesPage extends StatefulWidget {
-  final Group group;
-
-  const GroupExpensesPage({
-    super.key,
-    required this.group,
-  });
-
-  @override
-  State<GroupExpensesPage> createState() => _GroupExpensesPageState();
-}
-
-class _GroupExpensesPageState extends State<GroupExpensesPage>
-    with SingleTickerProviderStateMixin {
-  late TabController _tabController;
-
-  @override
-  void initState() {
-    super.initState();
-    _tabController = TabController(length: 3, vsync: this);
-    context.read<CountBloc>().add(LoadExpenses(widget.group.id));
-  }
-
-  @override
-  void dispose() {
-    _tabController.dispose();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: Text(widget.group.name),
-        bottom: TabBar(
-          controller: _tabController,
-          tabs: const [
-            Tab(text: 'Dépenses', icon: Icon(Icons.receipt_long)),
-            Tab(text: 'Balances', icon: Icon(Icons.account_balance)),
-            Tab(text: 'Remboursements', icon: Icon(Icons.payments)),
-          ],
-        ),
-      ),
-      body: BlocConsumer<CountBloc, CountState>(
-        listener: (context, state) {
-          if (state is CountError) {
-            ScaffoldMessenger.of(context).showSnackBar(
-              SnackBar(
-                content: Text(state.message),
-                backgroundColor: Colors.red,
-              ),
-            );
-          }
-        },
-        builder: (context, state) {
-          if (state is CountLoading) {
-            return const Center(child: CircularProgressIndicator());
-          }
-
-          if (state is ExpensesLoaded) {
-            return TabBarView(
-              controller: _tabController,
-              children: [
-                ExpensesTab(
-                  expenses: state.expenses,
-                  group: widget.group,
-                ),
-                BalancesTab(balances: state.balances),
-                SettlementsTab(settlements: state.settlements),
-              ],
-            );
-          }
-
-          return const Center(child: Text('Aucune donnée'));
-        },
-      ),
-      floatingActionButton: BlocBuilder<UserBloc, user_state.UserState>(
-        builder: (context, userState) {
-          if (userState is! user_state.UserLoaded) return const SizedBox();
-
-          return FloatingActionButton.extended(
-            onPressed: () => _showAddExpenseDialog(context, userState.user),
-            icon: const Icon(Icons.add),
-            label: const Text('Dépense'),
-          );
-        },
-      ),
-    );
-  }
-
-  void _showAddExpenseDialog(BuildContext context, user_state.UserModel currentUser) {
-    showDialog(
-      context: context,
-      builder: (dialogContext) => BlocProvider.value(
-        value: context.read<CountBloc>(),
-        child: AddExpenseDialog(
-          group: widget.group,
-          currentUser: currentUser,
-        ),
-      ),
-    );
-  }
-}

lib/data/models/account.dart

@@ -4,12 +4,14 @@ class Account {
   final String id;
   final String tripId;
   final String groupId;
+  final String name;
   final List<GroupMember> members;
 
   Account({
     required this.id,
     required this.tripId,
     required this.groupId,
+    required this.name,
     List<GroupMember>? members,
   }) : members = members ?? [];
 
@@ -19,6 +21,7 @@ class Account {
       id: map['id'] as String,
       tripId: map['tripId'] as String,
       groupId: map['groupId'] as String,
+      name: map['name'] as String,
       members: [],
     );
   }
@@ -28,6 +31,7 @@ class Account {
       'id': id,
       'tripId': tripId,
       'groupId': groupId,
+      'name': name,
       'members': members.map((member) => member.toMap()).toList(),
     };
   }
@@ -36,12 +40,14 @@ class Account {
     String? id,
     String? tripId,
     String? groupId,
+    String? name,
     List<GroupMember>? members,
   }) {
     return Account(
       id: id ?? this.id,
       tripId: tripId ?? this.tripId,
       groupId: groupId ?? this.groupId,
+      name: name ?? this.name,
       members: members ?? this.members,
     );
   }

lib/repositories/account_repository.dart

@@ -103,15 +103,44 @@ class AccountRepository {
     return await _firestore.collection('accounts').doc(accountId).get();
   }
 
-  Future<void> createAccount(Map<String, dynamic> accountData) async {
+  Future<void> updateAccount(String accountId, Account account) async {
-    await _firestore.collection('accounts').add(accountData);
+    try {
+      await _firestore.collection('accounts').doc(accountId).update(account.toMap());
+    } catch (e) {
+      _errorService.logError('account_repository.dart', 'Erreur lors de la mise à jour du compte: $e');
+    }
   }
 
-  Future<void> updateAccount(String accountId, Map<String, dynamic> accountData) async {
+  Future<void> deleteAccount(String tripId) async {
-    await _firestore.collection('accounts').doc(accountId).update(accountData);
+    try {
+      final querySnapshot = await _firestore
+          .collection('accounts')
+          .where('tripId', isEqualTo: tripId)
+          .get();
+      if (querySnapshot.docs.isEmpty) {
+        throw Exception('Aucun compte trouvé pour ce voyage');
       }
 
-  Future<void> deleteAccount(String accountId) async {
+      final docId = querySnapshot.docs.first.id;
-    await _firestore.collection('accounts').doc(accountId).delete();
+
+      final membersSnapshot = await _membersCollection(docId).get();
+      for (var memberDoc in membersSnapshot.docs) {
+        await _membersCollection(docId).doc(memberDoc.id).delete();
+      }
+      await _accountCollection.doc(docId).delete();
+    } catch (e) {
+      _errorService.logError('account_repository.dart', 'Erreur lors de la suppression du compte: $e');
+    }
+  }
+
+  Stream<List<GroupMember>> watchGroupMembers(String accountId) {
+    return _membersCollection(accountId).snapshots().map(
+          (snapshot) => snapshot.docs
+              .map((doc) => GroupMember.fromMap(
+                    doc.data() as Map<String, dynamic>,
+                    doc.id,
+                  ))
+              .toList(),
+        );  
   }
 }

lib/services/account_service.dart

@@ -0,0 +1,62 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:travel_mate/services/error_service.dart';
+import '../data/models/account.dart';
+
+class AccountService {
+  final _errorService = ErrorService();
+  final FirebaseFirestore _firestore = FirebaseFirestore.instance;
+
+  Stream<List<Account>> getAccountsStream() {
+    return _firestore.collection('accounts').snapshots().map((snapshot) {
+      return snapshot.docs.map((doc) {
+        return Account.fromMap(doc.data());
+      }).toList();
+    });
+  }
+
+  Future<bool> createAccount(Account account) async {
+    try {
+      await _firestore.collection('accounts').add(account.toMap());
+      return true;
+    } catch (e) {
+      _errorService.logError('Erreur lors de la création du compte: $e', StackTrace.current);
+      return false;
+    }
+  }
+
+  Future<bool> updateAccount(Account account) async {
+    try {
+      await _firestore.collection('accounts').doc(account.id).update(account.toMap());
+      return true;
+    } catch (e) {
+      _errorService.logError('Erreur lors de la mise à jour du compte: $e', StackTrace.current);
+      return false;
+    }
+  }
+
+  Future<bool> deleteAccount(String accountId) async {
+    try {
+      await _firestore.collection('accounts').doc(accountId).delete();
+      return true;
+    } catch (e) {
+      _errorService.logError('Erreur lors de la suppression du compte: $e', StackTrace.current);
+      return false;
+    }
+  }
+ 
+
+  Stream<List<Account>> getAccountsStreamByUser(String userId) {
+    return _firestore
+        .collection('accounts')
+        .where('members', arrayContains: userId)
+        .snapshots()
+        .map((snapshot) {
+      return snapshot.docs.map((doc) {
+        final account = Account.fromMap(doc.data());
+        _errorService.logError('Compte: ${account.name}, Membres: ${account.members.length}', StackTrace.current);
+        return account;
+      }).toList();
+    });
+  }
+
+}

lib/services/group_service.dart

@@ -58,12 +58,4 @@ class GroupService {
       }).toList();
     });
   }
-
-  Future<void> removeMemberFromGroup(String groupId, String memberId) async {
-    // TODO: Implémenter la suppression d'un membre d'un groupe
-  }
-
-  Future<void> addMemberToGroup(String groupId, String memberId) async {
-    // TODO: Implémenter l'ajout d'un membre à un groupe
-  }
 }