Added placeholder for lastName and role addition functionality

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(