TF-3385 Fix loading forever when empty mailbox with less than 20 items

lib/features/mailbox_dashboard/presentation/extensions/move_emails_to_mailbox_extension.dart

@@ -1,15 +1,16 @@
+import 'package:jmap_dart_client/jmap/core/unsigned_int.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/email/presentation_email.dart';
-import 'package:tmail_ui_user/features/email/domain/model/move_action.dart';
 import 'package:tmail_ui_user/features/mailbox_dashboard/presentation/controller/mailbox_dashboard_controller.dart';
 
 extension MoveEmailsToMailboxExtension on MailboxDashBoardController {
   void handleMoveEmailsToMailbox({
     required Map<MailboxId,List<EmailId>> originalMailboxIdsWithEmailIds,
     required MailboxId destinationMailboxId,
-    required MoveAction moveAction,
   }) {
+    if (destinationMailboxId == selectedMailbox.value?.id) return;
+
     final currentEmails = List<PresentationEmail>.from(
       emailsInCurrentMailbox,
     );
@@ -23,9 +24,18 @@ extension MoveEmailsToMailboxExtension on MailboxDashBoardController {
     final currentEmailsToBeMoved = currentEmails
       .where((email) => movedEmailIds.contains(email.id))
       .toList();
-    if (currentEmailsToBeMoved.isNotEmpty && destinationMailboxId != selectedMailbox.value?.id) {
+    if (currentEmailsToBeMoved.isNotEmpty) {
       currentEmails.removeWhere(currentEmailsToBeMoved.contains);
       updateEmailList(currentEmails);
     }
+    final currentMailbox = selectedMailbox.value;
+    final currentTotalEmails = currentMailbox?.totalEmails;
+    if (currentMailbox != null && currentTotalEmails != null) {
+      int newTotalEmails = currentTotalEmails.value.value.toInt() - movedEmailIds.length;
+      if (newTotalEmails < 0) newTotalEmails = 0;
+      selectedMailbox.value = currentMailbox.copyWith(
+        totalEmails: TotalEmails(UnsignedInt(newTotalEmails)),
+      );
+    }
   }
 }

lib/features/thread/presentation/thread_controller.dart

@@ -353,32 +353,38 @@ class ThreadController extends BaseController with EmailActionController {
         mailboxDashBoardController.handleMoveEmailsToMailbox(
           originalMailboxIdsWithEmailIds: reactionState.originalMailboxIdsWithEmailIds,
           destinationMailboxId: reactionState.destinationMailboxId,
-          moveAction: reactionState.moveAction,
         );
         _checkIfCurrentMailboxCanLoadMore();
       } else if (reactionState is MoveMultipleEmailToMailboxAllSuccess) {
         mailboxDashBoardController.handleMoveEmailsToMailbox(
           originalMailboxIdsWithEmailIds: reactionState.originalMailboxIdsWithEmailIds,
           destinationMailboxId: reactionState.destinationMailboxId,
-          moveAction: reactionState.moveAction,
         );
         _checkIfCurrentMailboxCanLoadMore();
       } else if (reactionState is MoveMultipleEmailToMailboxHasSomeEmailFailure) {
         mailboxDashBoardController.handleMoveEmailsToMailbox(
           originalMailboxIdsWithEmailIds: reactionState.originalMailboxIdsWithMoveSucceededEmailIds,
           destinationMailboxId: reactionState.destinationMailboxId,
-          moveAction: reactionState.moveAction,
         );
-        WidgetsBinding.instance.addPostFrameCallback((_) {
-          _checkIfCurrentMailboxCanLoadMore();
-        });
-      } else if (reactionState is DeleteEmailPermanentlySuccess
-        || reactionState is DeleteMultipleEmailsPermanentlyAllSuccess
-        || reactionState is DeleteMultipleEmailsPermanentlyHasSomeEmailFailure
-      ) {
-        WidgetsBinding.instance.addPostFrameCallback((_) {
-          _checkIfCurrentMailboxCanLoadMore();
-        });
+        _checkIfCurrentMailboxCanLoadMore();
+      } else if (reactionState is DeleteEmailPermanentlySuccess) {
+        _handleDeleteEmailsPermanentlyFromMailboxId(
+          reactionState.mailboxId,
+          deletedEmailsCount: 1,
+        );
+        _checkIfCurrentMailboxCanLoadMore();
+      } else if (reactionState is DeleteMultipleEmailsPermanentlyAllSuccess) {
+        _handleDeleteEmailsPermanentlyFromMailboxId(
+          reactionState.mailboxId,
+          deletedEmailsCount: reactionState.emailIds.length,
+        );
+        _checkIfCurrentMailboxCanLoadMore();
+      } else if (reactionState is DeleteMultipleEmailsPermanentlyHasSomeEmailFailure) {
+        _handleDeleteEmailsPermanentlyFromMailboxId(
+          reactionState.mailboxId,
+          deletedEmailsCount: reactionState.emailIds.length,
+        );
+        _checkIfCurrentMailboxCanLoadMore();
       }
     });
   }
@@ -394,6 +400,22 @@ class ThreadController extends BaseController with EmailActionController {
     mailboxDashBoardController.emailsInCurrentMailbox.refresh();
   }
 
+  void _handleDeleteEmailsPermanentlyFromMailboxId(
+    MailboxId? mailboxId, {
+    required int deletedEmailsCount,
+  }) {
+    if (mailboxDashBoardController.selectedMailbox.value?.id != mailboxId) return;
+    final currentMailbox = mailboxDashBoardController.selectedMailbox.value;
+    final currentTotalEmails = currentMailbox?.totalEmails;
+    if (currentMailbox != null && currentTotalEmails != null) {
+      int newTotalEmails = currentTotalEmails.value.value.toInt() - deletedEmailsCount;
+      if (newTotalEmails < 0) newTotalEmails = 0;
+      mailboxDashBoardController.selectedMailbox.value = currentMailbox.copyWith(
+        totalEmails: TotalEmails(UnsignedInt(newTotalEmails)),
+      );
+    }
+  }
+
   void _checkIfCurrentMailboxCanLoadMore() {
     final currentMailbox = mailboxDashBoardController.selectedMailbox.value;
     if (currentMailbox == null) return;