MESSENGER-5381 disable federated admins

Riot/Assets/de.lproj/Bwi.strings

@@ -683,3 +683,6 @@
 "create_room_failed_to_deactivate_federation_for_room_error_title" = "Föderation aktiv";
 "create_room_failed_to_deactivate_federation_for_room_error_text" = "Die Föderation konnte nicht deaktiviert werden, bitte versuche es später erneut.";
 "create_room_failed_to_deactivate_federation_alert_dismiss_button" = "Ok";
+
+"room_member_details_change_federated_member_power_lvl_to_admin_error_text" = "Diese Person kann keine Adminrechte erhalten, da sie nicht aus deiner Organisation stammt. Föderierte Personen können nur Mitglieder oder Moderatoren sein.";
+"room_member_details_change_federated_member_power_lvl_to_admin_error_button" = "Verstanden";

Riot/Assets/en.lproj/Bwi.strings

@@ -592,3 +592,6 @@
 "create_room_failed_to_deactivate_federation_for_room_error_title" = "Federation active";
 "create_room_failed_to_deactivate_federation_for_room_error_text" = "The federation could not be disabled, please try again later.";
 "create_room_failed_to_deactivate_federation_alert_dismiss_button" = "Ok";
+
+"room_member_details_change_federated_member_power_lvl_to_admin_error_text" = "This user cannot be granted admin rights as they do not come from your organization. Federated users can only be members or moderators.";
+"room_member_details_change_federated_member_power_lvl_to_admin_error_button" = "Ok";

Riot/Modules/Room/Members/Detail/RoomMemberDetailsViewController.m

@@ -1270,7 +1270,22 @@
             }
             case MXKRoomMemberDetailsActionSetAdmin:
             {
-                [self setPowerLevel:RoomPowerLevelAdmin promptUser:YES];
+                // bwi: #5381 federated admins are not allowed
+                if (BWIBuildSettings.shared.isFederationEnabled)
+                {
+                    if ([self.mxRoom isRoomMemberFederated:self.mxRoomMember.userId])
+                    {
+                        [self showAlertFederatedAdminsNotAllowed];
+                    }
+                    else
+                    {
+                        [self setPowerLevel:RoomPowerLevelAdmin promptUser:YES];
+                    }
+                }
+                else 
+                {
+                    [self setPowerLevel:RoomPowerLevelAdmin promptUser:YES];
+                }
                 break;
             }
             case MXKRoomMemberDetailsActionBan:
@@ -1690,6 +1705,29 @@
     [bwiUserLabelButton setTitle:title forState:UIControlStateHighlighted];
 }
 
+// bwi: #5381 federated admins are not allowed
+- (void)showAlertFederatedAdminsNotAllowed {
+    __weak typeof(self) weakSelf = self;
+    
+    currentAlert = [UIAlertController alertControllerWithTitle:BWIL10n.roomMemberDetailsChangeFederatedMemberPowerLvlToAdminErrorText
+                                                       message:nil
+                                                preferredStyle:UIAlertControllerStyleAlert];
+    
+    [currentAlert addAction:[UIAlertAction actionWithTitle:BWIL10n.roomMemberDetailsChangeFederatedMemberPowerLvlToAdminErrorButton
+                                                     style:UIAlertActionStyleDefault
+                                                   handler:^(UIAlertAction * action) {
+        
+        if (weakSelf)
+        {
+            typeof(self) self = weakSelf;
+            self->currentAlert = nil;
+        }
+        
+    }]];
+    
+    [self presentViewController:currentAlert animated:YES completion:nil];
+}
+
 #pragma mark - bwi textfield delegate
 
 -(void) textFieldDidChangeSelection:(UITextField *)textField {