Added capability to detect disabled gmail service for Google Workspace accounts during account creation. (#580)

Wino.Core.Domain/Exceptions/GmailServiceDisabledException.cs

@@ -0,0 +1,3 @@
+namespace Wino.Core.Domain.Exceptions;
+
+public class GmailServiceDisabledException : System.Exception { }

Wino.Core.Domain/Translations/en_US/resources.json

@@ -214,6 +214,8 @@
     "GeneralTitle_Error": "Error",
     "GeneralTitle_Info": "Information",
     "GeneralTitle_Warning": "Warning",
+    "GmailServiceDisabled_Title": "Gmail Error",
+    "GmailServiceDisabled_Message": "Your Google Workspace account seems to be disabled for Gmail service. Please contact your administrator to enable Gmail service for your account.",
     "HoverActionOption_Archive": "Archive",
     "HoverActionOption_Delete": "Delete",
     "HoverActionOption_MoveJunk": "Move to Junk",

Wino.Core/Synchronizers/GmailSynchronizer.cs

@@ -5,6 +5,7 @@ using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
 using CommunityToolkit.Mvvm.Messaging;
+using Google;
 using Google.Apis.Calendar.v3.Data;
 using Google.Apis.Gmail.v1;
 using Google.Apis.Gmail.v1.Data;
@@ -120,7 +121,18 @@ public class GmailSynchronizer : WinoSynchronizer<IClientServiceRequest, Message
         {
             _logger.Information("Synchronizing folders for {Name}", Account.Name);
 
-            await SynchronizeFoldersAsync(cancellationToken).ConfigureAwait(false);
+            try
+            {
+                await SynchronizeFoldersAsync(cancellationToken).ConfigureAwait(false);
+            }
+            catch (GoogleApiException googleException) when (googleException.Message.Contains("Mail service not enabled"))
+            {
+                throw new GmailServiceDisabledException();
+            }
+            catch (Exception)
+            {
+                throw;
+            }
 
             _logger.Information("Synchronizing folders for {Name} is completed", Account.Name);
         }

Wino.Mail.ViewModels/AccountManagementViewModel.cs

@@ -274,6 +274,19 @@ public partial class AccountManagementViewModel : AccountManagementPageViewModel
                 DialogService.InfoBarMessage(Translator.Info_AccountCreatedTitle, string.Format(Translator.Info_AccountCreatedMessage, createdAccount.Address), InfoBarMessageType.Success);
             }
         }
+        catch (GmailServiceDisabledException)
+        {
+            // For Google Workspace accounts, Gmail API might be disabled by the admin.
+            // Wino can't continue synchronization in this case.
+            // We must notify the user about this and prevent account creation.
+
+            DialogService.InfoBarMessage(Translator.GmailServiceDisabled_Title, Translator.GmailServiceDisabled_Message, InfoBarMessageType.Error);
+
+            if (createdAccount != null)
+            {
+                await AccountService.DeleteAccountAsync(createdAccount);
+            }
+        }
         catch (AccountSetupCanceledException)
         {
             // Ignore