Fix for build to run

Try to rebase

frontend/pshared/lib/data/dto/invitation/invitation.dart

@@ -9,11 +9,15 @@ part 'invitation.g.dart';
 class InvitationContentDTO {
   final String email;
   final String name;
+  @JsonKey(defaultValue: '')
+  //TODO remove when backend will accept lastName
+  final String lastName;
   final String comment;
 
   const InvitationContentDTO({
     required this.email,
     required this.name,
+    required this.lastName,
     required this.comment,
   });
 

frontend/pshared/lib/data/mapper/invitation/invitation.dart

@@ -20,6 +20,7 @@ extension InvitationModelMapper on Invitation {
     content: InvitationContentDTO(
       email: content.email,
       name: content.name,
+      lastName: content.lastName,
       comment: content.comment,
     ),
     isArchived: isArchived,
@@ -40,6 +41,7 @@ extension InvitationDTOMapper on InvitationDTO {
     content: InvitationContent(
       email: content.email,
       name: content.name,
+      lastName: content.lastName,
       comment: content.comment,
     ),
     isArchived: isArchived,

frontend/pshared/lib/models/invitation/invitation.dart

@@ -8,23 +8,36 @@ import 'package:pshared/models/invitation/status.dart';
 class InvitationContent {
   final String email;
   final String name;
+  final String lastName;
   final String comment;
 
   const InvitationContent({
     required this.email,
     required this.name,
+    required this.lastName,
     required this.comment,
   });
 
   InvitationContent copyWith({
     String? email,
     String? name,
+    String? lastName,
     String? comment,
   }) => InvitationContent(
     email: email ?? this.email,
     name: name ?? this.name,
+    lastName: lastName ?? this.lastName,
     comment: comment ?? this.comment,
   );
+
+  String get fullName {
+    final trimmedName = name.trim();
+    final trimmedLastName = lastName.trim();
+    if (trimmedName.isEmpty && trimmedLastName.isEmpty) return '';
+    if (trimmedName.isEmpty) return trimmedLastName;
+    if (trimmedLastName.isEmpty) return trimmedName;
+    return '$trimmedName $trimmedLastName';
+  }
 }
 
 class Invitation implements PermissionBoundStorable {
@@ -60,7 +73,7 @@ class Invitation implements PermissionBoundStorable {
   @override
   String get organizationRef => permissionBound.organizationRef;
 
-  String get inviteeDisplayName => content.name.isNotEmpty ? content.name : content.email;
+  String get inviteeDisplayName => content.fullName.isNotEmpty ? content.fullName : content.email;
   bool get isExpired => expiresAt.isBefore(DateTime.now().toUtc());
   bool get isPending => status == InvitationStatus.created || status == InvitationStatus.sent;
 
@@ -91,6 +104,7 @@ Invitation newInvitation({
   required String inviterRef,
   required String email,
   String name = '',
+  String lastName = '',
   String comment = '',
   InvitationStatus status = InvitationStatus.created,
   DateTime? expiresAt,
@@ -106,6 +120,6 @@ Invitation newInvitation({
   inviterRef: inviterRef,
   status: status,
   expiresAt: expiresAt ?? DateTime.now().toUtc().add(const Duration(days: 7)),
-  content: InvitationContent(email: email, name: name, comment: comment),
+  content: InvitationContent(email: email, name: name, lastName: lastName, comment: comment),
   isArchived: isArchived,
 );

frontend/pshared/lib/provider/invitations.dart

@@ -30,6 +30,7 @@ class InvitationsProvider extends GenericProvider<Invitation> {
     required String roleRef,
     required String inviterRef,
     String name = '',
+    String lastName = '',
     String comment = '',
     DateTime? expiresAt,
   }) async {
@@ -39,6 +40,7 @@ class InvitationsProvider extends GenericProvider<Invitation> {
       inviterRef: inviterRef,
       email: email,
       name: name,
+      lastName: lastName,
       comment: comment,
       expiresAt: expiresAt,
     );

frontend/pshared/lib/provider/permissions.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import 'package:collection/collection.dart';
 
 import 'package:pshared/api/requests/change_role.dart';
+import 'package:pshared/models/describable.dart';
 import 'package:pshared/models/permissions/access.dart';
 import 'package:pshared/models/permissions/action.dart' as perm;
 import 'package:pshared/models/permissions/data/permission.dart';
@@ -101,6 +102,32 @@ class PermissionsProvider extends ChangeNotifier {
     return _performServiceCall(() => PermissionsService.deleteRoleDescription(descRef));
   }
 
+  Future<RoleDescription?> createRoleDescription({
+    required String name,
+    String? description,
+  }) async {
+    if (!_organizations.isOrganizationSet) {
+      throw StateError('Organization is not set');
+    }
+    final normalizedName = name.trim();
+    final normalizedDescription = description?.trim();
+    final roleDescription = RoleDescription.build(
+      organizationRef: _organizations.current.id,
+      roleDescription: newDescribable(name: normalizedName, description: normalizedDescription),
+    );
+
+    await _performServiceCall(() => PermissionsService.createRoleDescription(roleDescription));
+    final matches = roleDescriptions.where(
+      (role) =>
+        role.organizationRef == _organizations.current.id &&
+        role.name == normalizedName &&
+        (role.description ?? '') == (normalizedDescription ?? ''),
+    ).toList()
+      ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
+
+    return matches.isEmpty ? null : matches.first;
+  }
+
   Future<UserAccess?> createPermissions(List<Policy> policies) {
     return _performServiceCall(() => PermissionsService.createPolicies(policies));
   }

frontend/pshared/lib/service/permissions.dart

@@ -4,7 +4,9 @@ import 'package:pshared/api/requests/change_role.dart';
 import 'package:pshared/api/requests/permissions/change_policies.dart';
 import 'package:pshared/api/responses/policies.dart';
 import 'package:pshared/data/mapper/permissions/data/permissions.dart';
+import 'package:pshared/data/mapper/permissions/descriptions/role.dart';
 import 'package:pshared/data/mapper/permissions/descriptions/description.dart';
+import 'package:pshared/models/permissions/descriptions/role.dart';
 import 'package:pshared/models/permissions/access.dart';
 import 'package:pshared/models/permissions/data/policy.dart';
 import 'package:pshared/service/authorization/service.dart';
@@ -35,6 +37,15 @@ class PermissionsService {
     await AuthorizationService.getDELETEResponse(_objectType, '/role/$roleDescriptionRef', {});
   }  
 
+  static Future<void> createRoleDescription(RoleDescription roleDescription) async {
+    _logger.fine('Creating role ${roleDescription.name}...');
+    await AuthorizationService.getPOSTResponse(
+      _objectType,
+      '/role',
+      roleDescription.toDTO().toJson(),
+    );
+  }
+
   static Future<void> createPolicies(List<Policy> policies) async {
     _logger.fine('Creating ${policies.length} policies...');
     await AuthorizationService.getPOSTResponse(

frontend/pweb/lib/l10n/en.arb

@@ -193,6 +193,11 @@
   "invitationEmailLabel": "Work email",
   "invitationNameLabel": "Full name",
   "invitationRoleLabel": "Role",
+  "invitationAddRoleButton": "Add role",
+  "invitationAddRoleTitle": "New role",
+  "invitationRoleNameLabel": "Role name",
+  "invitationRoleNameRequired": "Role name is required",
+  "invitationRoleDescriptionLabel": "Role description (optional)",
   "invitationMessageLabel": "Message (optional)",
   "invitationExpiresIn": "Expires in {days} days",
   "@invitationExpiresIn": {
@@ -204,6 +209,7 @@
   },
   "invitationSendButton": "Send invitation",
   "invitationCreatedSuccess": "Invitation sent",
+  "invitationRoleCreated": "Role created",
   "invitationSearchHint": "Search invitations",
   "invitationFilterAll": "All",
   "invitationFilterPending": "Pending",
@@ -227,6 +233,7 @@
   "invitationRevoked": "Invitation revoked",
   "invitationArchiveFailed": "Could not archive the invitation",
   "invitationRevokeFailed": "Could not revoke the invitation",
+  "invitationRoleCreateFailed": "Could not create role",
   "invitationUnknownRole": "Unknown role",
   
   "operationfryTitle": "Operation history",
@@ -564,10 +571,6 @@
   "colComment": "Comment",
   "recipientNoPaymentDetails": "This recipient has no available payment details.",
   "paymentInfo": "Payment info",
-  "paymentStatusSuccessTitle": "Payment completed",
-  "paymentStatusFailureTitle": "Payment failed",
-  "paymentStatusSuccessMessage": "The payment was completed successfully.",
-  "paymentStatusFailureMessage": "The payment could not be completed.",
   "recipient": "Recipient",
   "chooseAnotherRecipient": "Choose another recipient",
   "noRecipientsYet": "No recipients yet.",

frontend/pweb/lib/l10n/ru.arb

@@ -193,6 +193,11 @@
   "invitationEmailLabel": "Рабочий email",
   "invitationNameLabel": "Полное имя",
   "invitationRoleLabel": "Роль",
+  "invitationAddRoleButton": "Добавить роль",
+  "invitationAddRoleTitle": "Новая роль",
+  "invitationRoleNameLabel": "Название роли",
+  "invitationRoleNameRequired": "Укажите название роли",
+  "invitationRoleDescriptionLabel": "Описание роли (необязательно)",
   "invitationMessageLabel": "Сообщение (необязательно)",
   "invitationExpiresIn": "Истекает через {days} дн.",
   "@invitationExpiresIn": {
@@ -204,6 +209,7 @@
   },
   "invitationSendButton": "Отправить приглашение",
   "invitationCreatedSuccess": "Приглашение отправлено",
+  "invitationRoleCreated": "Роль создана",
   "invitationSearchHint": "Поиск приглашений",
   "invitationFilterAll": "Все",
   "invitationFilterPending": "В ожидании",
@@ -227,6 +233,7 @@
   "invitationRevoked": "Приглашение отозвано",
   "invitationArchiveFailed": "Не удалось архивировать приглашение",
   "invitationRevokeFailed": "Не удалось отозвать приглашение",
+  "invitationRoleCreateFailed": "Не удалось создать роль",
   "invitationUnknownRole": "Неизвестная роль",
   
   "operationfryTitle": "История операций",
@@ -565,10 +572,6 @@
   "colComment": "Комментарий",
   "recipientNoPaymentDetails": "У этого получателя нет доступных платежных данных.",
   "paymentInfo": "Платежная информация",
-  "paymentStatusSuccessTitle": "Платеж выполнен",
-  "paymentStatusFailureTitle": "Платеж не выполнен",
-  "paymentStatusSuccessMessage": "Платеж прошел успешно.",
-  "paymentStatusFailureMessage": "Не удалось выполнить платеж.",
   "recipient": "Получатель",
   "chooseAnotherRecipient": "Выбрать другого получателя",
   "noRecipientsYet": "Получателей пока нет.",

frontend/pweb/lib/main.dart

@@ -19,6 +19,7 @@ import 'package:pshared/provider/invitations.dart';
 import 'package:pshared/service/payment/wallets.dart';
 
 import 'package:pweb/app/app.dart';
+import 'package:pweb/pages/invitations/widgets/list/view_model.dart';
 import 'package:pweb/app/timeago.dart';
 import 'package:pweb/providers/carousel.dart';
 import 'package:pweb/providers/operatioins.dart';
@@ -85,6 +86,13 @@ void main() async {
           create: (_) => InvitationsProvider(),
           update: (context, organizations, provider) => provider!..updateProviders(organizations),
         ),
+        ChangeNotifierProxyProvider2<OrganizationsProvider, RecipientsProvider, PaymentMethodsProvider>(
+           create: (_) => PaymentMethodsProvider(),
+           update: (context, organizations, recipients, provider) => provider!..updateProviders(organizations, recipients),
+        ),
+        ChangeNotifierProvider(
+          create: (_) => InvitationListViewModel(),
+        ),
         ChangeNotifierProxyProvider<OrganizationsProvider, WalletsProvider>(
           create: (_) => WalletsProvider(ApiWalletsService()),
           update: (context, organizations, provider) => provider!..update(organizations),

frontend/pweb/lib/models/role_draft.dart

@@ -0,0 +1,9 @@
+class RoleDraft {
+  final String name;
+  final String description;
+
+  const RoleDraft({
+    required this.name,
+    required this.description,
+  });
+}

frontend/pweb/lib/pages/invitations/page.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 
 import 'package:collection/collection.dart';
+
 import 'package:provider/provider.dart';
 
 import 'package:pshared/models/resources.dart';
@@ -13,6 +14,7 @@ import 'package:pweb/pages/invitations/widgets/form/form.dart';
 import 'package:pweb/pages/invitations/widgets/list/list.dart';
 import 'package:pweb/pages/loader.dart';
 import 'package:pweb/widgets/error/snackbar.dart';
+import 'package:pweb/widgets/roles/create_role_dialog.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
@@ -27,12 +29,34 @@ class InvitationsPage extends StatefulWidget {
 class _InvitationsPageState extends State<InvitationsPage> {
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
   final TextEditingController _emailController = TextEditingController();
-  final TextEditingController _nameController = TextEditingController();
+  final TextEditingController _firstNameController = TextEditingController();
+  final TextEditingController _lastNameController = TextEditingController();
   final TextEditingController _messageController = TextEditingController();
 
   String? _selectedRoleRef;
   int _expiryDays = 7;
 
+  Future<void> _createRole() async {
+    final loc = AppLocalizations.of(context)!;
+    final draft = await showCreateRoleDialog(context);
+    if (draft == null) return;
+
+    final permissions = context.read<PermissionsProvider>();
+    final createdRole = await executeActionWithNotification(
+      context: context,
+      action: () => permissions.createRoleDescription(
+        name: draft.name,
+        description: draft.description.isEmpty ? null : draft.description,
+      ),
+      successMessage: loc.invitationRoleCreated,
+      errorMessage: loc.invitationRoleCreateFailed,
+    );
+
+    if (createdRole != null && mounted) {
+      setState(() => _selectedRoleRef = createdRole.id);
+    }
+  }
+
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
@@ -41,15 +65,20 @@ class _InvitationsPageState extends State<InvitationsPage> {
 
   void _bootstrapRoleSelection() {
     final roles = context.read<PermissionsProvider>().roleDescriptions;
-    if (_selectedRoleRef == null && roles.isNotEmpty) {
+    if (roles.isEmpty) return;
-      _selectedRoleRef = roles.first.storable.id;
+    final firstRoleRef = roles.first.storable.id;
-    }
+    final isSelectedAvailable = _selectedRoleRef != null
+        && roles.any((role) => role.storable.id == _selectedRoleRef);
+    if (isSelectedAvailable) return;
+    if (!mounted) return;
+    setState(() => _selectedRoleRef = firstRoleRef);
   }
 
   @override
   void dispose() {
     _emailController.dispose();
-    _nameController.dispose();
+    _firstNameController.dispose();
+    _lastNameController.dispose();
     _messageController.dispose();
     super.dispose();
   }
@@ -71,7 +100,8 @@ class _InvitationsPageState extends State<InvitationsPage> {
       context: context,
       action: () => invitations.sendInvitation(
         email: _emailController.text.trim(),
-        name: _nameController.text.trim(),
+        name: _firstNameController.text.trim(),
+        lastName: _lastNameController.text.trim(),
         comment: _messageController.text.trim(),
         roleRef: roleRef,
         inviterRef: account.id,
@@ -82,7 +112,8 @@ class _InvitationsPageState extends State<InvitationsPage> {
     );
 
     _emailController.clear();
-    _nameController.clear();
+    _firstNameController.clear();
+    _lastNameController.clear();
     _messageController.clear();
   }
 
@@ -90,6 +121,7 @@ class _InvitationsPageState extends State<InvitationsPage> {
   Widget build(BuildContext context) {
     final loc = AppLocalizations.of(context)!;
     final permissions = context.watch<PermissionsProvider>();
+    final canCreateRoles = permissions.canCreate(ResourceType.roles);
 
     if (!permissions.canRead(ResourceType.invitations)) {
       return PageViewLoader(
@@ -109,8 +141,11 @@ class _InvitationsPageState extends State<InvitationsPage> {
               InvitationsForm(
                 formKey: _formKey,
                 emailController: _emailController,
-                nameController: _nameController,
+                firstNameController: _firstNameController,
+                lastNameController: _lastNameController,
                 messageController: _messageController,
+                canCreateRoles: canCreateRoles,
+                onCreateRole: _createRole,
                 expiryDays: _expiryDays,
                 onExpiryChanged: (value) => setState(() => _expiryDays = value),
                 selectedRoleRef: _selectedRoleRef,

frontend/pweb/lib/pages/invitations/widgets/form/fields.dart

@@ -8,8 +8,11 @@ import 'package:pweb/generated/i18n/app_localizations.dart';
 class InvitationFormFields extends StatelessWidget {
   final List<RoleDescription> roles;
   final TextEditingController emailController;
-  final TextEditingController nameController;
+  final TextEditingController firstNameController;
+  final TextEditingController lastNameController;
   final TextEditingController messageController;
+  final bool canCreateRoles;
+  final VoidCallback onCreateRole;
   final String? selectedRoleRef;
   final ValueChanged<String?> onRoleChanged;
 
@@ -17,8 +20,11 @@ class InvitationFormFields extends StatelessWidget {
     super.key,
     required this.roles,
     required this.emailController,
-    required this.nameController,
+    required this.firstNameController,
+    required this.lastNameController,
     required this.messageController,
+    required this.canCreateRoles,
+    required this.onCreateRole,
     required this.selectedRoleRef,
     required this.onRoleChanged,
   });
@@ -47,11 +53,21 @@ class InvitationFormFields extends StatelessWidget {
               ),
             ),
             SizedBox(
-              width: 280,
+              width: 200,
               child: TextFormField(
-                controller: nameController,
+                controller: firstNameController,
                 decoration: InputDecoration(
-                  labelText: loc.invitationNameLabel,
+                  labelText: loc.firstName,
+                  prefixIcon: const Icon(Icons.person_outline),
+                ),
+              ),
+            ),
+            SizedBox(
+              width: 200,
+              child: TextFormField(
+                controller: lastNameController,
+                decoration: InputDecoration(
+                  labelText: loc.lastName,
                   prefixIcon: const Icon(Icons.person_outline),
                 ),
               ),
@@ -59,7 +75,7 @@ class InvitationFormFields extends StatelessWidget {
             SizedBox(
               width: 260,
               child: DropdownButtonFormField<String>(
-                initialValue: selectedRoleRef ?? (roles.isNotEmpty ? roles.first.storable.id : null),
+                value: selectedRoleRef,
                 items: roles.map((role) => DropdownMenuItem(
                   value: role.storable.id,
                   child: Text(role.describable.name),
@@ -68,6 +84,11 @@ class InvitationFormFields extends StatelessWidget {
                 decoration: InputDecoration(
                   labelText: loc.invitationRoleLabel,
                   prefixIcon: const Icon(Icons.security_outlined),
+                  suffixIcon: IconButton(
+                    onPressed: canCreateRoles ? onCreateRole : null,
+                    icon: const Icon(Icons.add_circle_outline),
+                    tooltip: loc.invitationAddRoleButton,
+                  ),
                 ),
               ),
             ),

frontend/pweb/lib/pages/invitations/widgets/form/form.dart

@@ -6,8 +6,11 @@ import 'package:pweb/pages/invitations/widgets/form/view.dart';
 class InvitationsForm extends StatelessWidget {
   final GlobalKey<FormState> formKey;
   final TextEditingController emailController;
-  final TextEditingController nameController;
+  final TextEditingController firstNameController;
+  final TextEditingController lastNameController;
   final TextEditingController messageController;
+  final bool canCreateRoles;
+  final VoidCallback onCreateRole;
   final int expiryDays;
   final ValueChanged<int> onExpiryChanged;
   final String? selectedRoleRef;
@@ -19,8 +22,11 @@ class InvitationsForm extends StatelessWidget {
     super.key,
     required this.formKey,
     required this.emailController,
-    required this.nameController,
+    required this.firstNameController,
+    required this.lastNameController,
     required this.messageController,
+    required this.canCreateRoles,
+    required this.onCreateRole,
     required this.expiryDays,
     required this.onExpiryChanged,
     required this.selectedRoleRef,
@@ -33,8 +39,11 @@ class InvitationsForm extends StatelessWidget {
   Widget build(BuildContext context) => InvitationFormView(
     formKey: formKey,
     emailController: emailController,
-    nameController: nameController,
+    firstNameController: firstNameController,
+    lastNameController: lastNameController,
     messageController: messageController,
+    canCreateRoles: canCreateRoles,
+    onCreateRole: onCreateRole,
     expiryDays: expiryDays,
     onExpiryChanged: onExpiryChanged,
     selectedRoleRef: selectedRoleRef,

frontend/pweb/lib/pages/invitations/widgets/form/view.dart

@@ -13,8 +13,11 @@ import 'package:pweb/generated/i18n/app_localizations.dart';
 class InvitationFormView extends StatelessWidget {
   final GlobalKey<FormState> formKey;
   final TextEditingController emailController;
-  final TextEditingController nameController;
+  final TextEditingController firstNameController;
+  final TextEditingController lastNameController;
   final TextEditingController messageController;
+  final bool canCreateRoles;
+  final VoidCallback onCreateRole;
   final int expiryDays;
   final ValueChanged<int> onExpiryChanged;
   final String? selectedRoleRef;
@@ -26,8 +29,11 @@ class InvitationFormView extends StatelessWidget {
     super.key,
     required this.formKey,
     required this.emailController,
-    required this.nameController,
+    required this.firstNameController,
+    required this.lastNameController,
     required this.messageController,
+    required this.canCreateRoles,
+    required this.onCreateRole,
     required this.expiryDays,
     required this.onExpiryChanged,
     required this.selectedRoleRef,
@@ -61,8 +67,11 @@ class InvitationFormView extends StatelessWidget {
               InvitationFormFields(
                 roles: roles,
                 emailController: emailController,
-                nameController: nameController,
+                firstNameController: firstNameController,
+                lastNameController: lastNameController,
                 messageController: messageController,
+                canCreateRoles: canCreateRoles,
+                onCreateRole: onCreateRole,
                 selectedRoleRef: selectedRoleRef,
                 onRoleChanged: onRoleChanged,
               ),

frontend/pweb/lib/pages/invitations/widgets/list/view.dart

@@ -6,9 +6,9 @@ import 'package:pshared/models/invitation/invitation.dart';
 import 'package:pshared/provider/invitations.dart';
 
 import 'package:pweb/models/invitation_filter.dart';
-import 'package:pweb/pages/invitations/widgets/filter/invitation_filter.dart';
 import 'package:pweb/pages/invitations/widgets/filter/chips.dart';
 import 'package:pweb/pages/invitations/widgets/list/body.dart';
+import 'package:pweb/pages/invitations/widgets/list/view_model.dart';
 import 'package:pweb/pages/invitations/widgets/search_field.dart';
 import 'package:pweb/widgets/error/snackbar.dart';
 
@@ -25,70 +25,62 @@ class InvitationListView extends StatefulWidget {
 class _InvitationListViewState extends State<InvitationListView> {
   final TextEditingController _searchController = TextEditingController();
 
-  InvitationFilter _filter = InvitationFilter.all;
-  String _query = '';
   Object? _lastError;
+  InvitationsProvider? _provider;
+
+  @override
+  void initState() {
+    super.initState();
+    _provider = context.read<InvitationsProvider>();
+    _provider?.addListener(_onProviderChanged);
+  }
 
   @override
   void dispose() {
+    _provider?.removeListener(_onProviderChanged);
     _searchController.dispose();
     super.dispose();
   }
 
-  void _setQuery(String query) {
+  void _setQuery(String query) => context.read<InvitationListViewModel>().setQuery(query);
-    setState(() => _query = query.trim().toLowerCase());
+  void _setFilter(InvitationFilter filter) => context.read<InvitationListViewModel>().setFilter(filter);
-  }
 
-  void _setFilter(InvitationFilter filter) {
+  void _onProviderChanged() {
-    setState(() => _filter = filter);
+    final provider = _provider;
+    if (provider == null) {
+      return;
+    }
+    final error = provider.error;
+    if (error == null) {
+      _lastError = null;
+      return;
     }
-
-  void _notifyError(BuildContext context, Object error, AppLocalizations loc) {
     if (identical(error, _lastError)) {
       return;
     }
     _lastError = error;
+    final loc = AppLocalizations.of(context)!;
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
       postNotifyUserOfErrorX(
         context: context,
         errorSituation: loc.errorLoadingInvitations,
         exception: error,
       );
-  }
-
-  List<Invitation> _filteredInvitations(List<Invitation> invitations) {
-    final showArchived = _filter == InvitationFilter.archived;
-    Iterable<Invitation> filtered = invitations
-        .where((inv) => showArchived ? inv.isArchived : !inv.isArchived)
-        .where((inv) => invitationFilterMatches(_filter, inv));
-
-    if (_query.isNotEmpty) {
-      filtered = filtered.where((inv) {
-        return inv.inviteeDisplayName.toLowerCase().contains(_query)
-            || inv.content.email.toLowerCase().contains(_query);
     });
   }
 
-    final sorted = filtered.toList()
-      ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
-    return sorted;
-  }
-
   @override
   Widget build(BuildContext context) {
     final loc = AppLocalizations.of(context)!;
     final provider = context.watch<InvitationsProvider>();
+    final viewModel = context.watch<InvitationListViewModel>();
 
     if (provider.isLoading) {
       return const Center(child: CircularProgressIndicator());
     }
 
-    if (provider.error != null) {
+    final invitations = viewModel.filteredInvitations(provider.invitations);
-      _notifyError(context, provider.error!, loc);
-    } else {
-      _lastError = null;
-    }
-
-    final invitations = _filteredInvitations(provider.invitations);
 
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
@@ -100,7 +92,7 @@ class _InvitationListViewState extends State<InvitationListView> {
         ),
         const SizedBox(height: 12),
         InvitationFilterChips(
-          selectedFilter: _filter,
+          selectedFilter: viewModel.filter,
           onSelected: _setFilter,
         ),
         const SizedBox(height: 16),

frontend/pweb/lib/pages/invitations/widgets/list/view_model.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+
+import 'package:pshared/models/invitation/invitation.dart';
+
+import 'package:pweb/models/invitation_filter.dart';
+import 'package:pweb/pages/invitations/widgets/filter/invitation_filter.dart';
+
+
+class InvitationListViewModel extends ChangeNotifier {
+  InvitationFilter _filter = InvitationFilter.all;
+  String _query = '';
+
+  InvitationFilter get filter => _filter;
+  String get query => _query;
+
+  void setFilter(InvitationFilter filter) {
+    if (_filter == filter) return;
+    _filter = filter;
+    notifyListeners();
+  }
+
+  void setQuery(String query) {
+    final normalized = query.trim().toLowerCase();
+    if (_query == normalized) return;
+    _query = normalized;
+    notifyListeners();
+  }
+
+  List<Invitation> filteredInvitations(List<Invitation> invitations) {
+    final showArchived = _filter == InvitationFilter.archived;
+    Iterable<Invitation> filtered = invitations
+        .where((inv) => showArchived ? inv.isArchived : !inv.isArchived)
+        .where((inv) => invitationFilterMatches(_filter, inv));
+
+    if (_query.isNotEmpty) {
+      filtered = filtered.where((inv) {
+        return inv.inviteeDisplayName.toLowerCase().contains(_query)
+            || inv.content.email.toLowerCase().contains(_query);
+      });
+    }
+
+    final sorted = filtered.toList()
+      ..sort((a, b) => b.createdAt.compareTo(a.createdAt));
+    return sorted;
+  }
+}

frontend/pweb/lib/widgets/roles/create_role_dialog.dart

@@ -0,0 +1,85 @@
+import 'package:flutter/material.dart';
+
+import 'package:pweb/models/role_draft.dart';
+import 'package:pweb/generated/i18n/app_localizations.dart';
+
+
+Future<RoleDraft?> showCreateRoleDialog(BuildContext context) {
+  return showDialog<RoleDraft>(
+    context: context,
+    builder: (dialogContext) => const _CreateRoleDialog(),
+  );
+}
+
+class _CreateRoleDialog extends StatefulWidget {
+  const _CreateRoleDialog();
+
+  @override
+  State<_CreateRoleDialog> createState() => _CreateRoleDialogState();
+}
+
+class _CreateRoleDialogState extends State<_CreateRoleDialog> {
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+  final TextEditingController _nameController = TextEditingController();
+  final TextEditingController _descriptionController = TextEditingController();
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _descriptionController.dispose();
+    super.dispose();
+  }
+
+  void _submit() {
+    final form = _formKey.currentState;
+    if (form == null || !form.validate()) return;
+    Navigator.of(context).pop(RoleDraft(
+      name: _nameController.text.trim(),
+      description: _descriptionController.text.trim(),
+    ));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final loc = AppLocalizations.of(context)!;
+    return AlertDialog(
+      title: Text(loc.invitationAddRoleTitle),
+      content: Form(
+        key: _formKey,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            TextFormField(
+              controller: _nameController,
+              decoration: InputDecoration(
+                labelText: loc.invitationRoleNameLabel,
+              ),
+              validator: (value) => (value == null || value.trim().isEmpty)
+                ? loc.invitationRoleNameRequired
+                : null,
+            ),
+            const SizedBox(height: 12),
+            TextFormField(
+              controller: _descriptionController,
+              minLines: 2,
+              maxLines: 3,
+              decoration: InputDecoration(
+                labelText: loc.invitationRoleDescriptionLabel,
+              ),
+            ),
+          ],
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(),
+          child: Text(loc.cancel),
+        ),
+        ElevatedButton(
+          onPressed: _submit,
+          child: Text(loc.add),
+        ),
+      ],
+    );
+  }
+}