From 03ce0ad8eaba75280a5be55ec21ee4814c939a7c Mon Sep 17 00:00:00 2001
From: DonVoo <donvoo@golddata.eu>
Date: Tue, 14 Jul 2026 18:29:37 +0200
Subject: [PATCH] Count account test without fetching bodies

---
 backend/04-imap-source.go | 13 +++++++++++++
 backend/07-migrate.go     |  9 +++------
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/backend/04-imap-source.go b/backend/04-imap-source.go
index 0711627..0a48b99 100644
--- a/backend/04-imap-source.go
+++ b/backend/04-imap-source.go
@@ -48,6 +48,7 @@ type Folder struct {
 // 07-migrate.go gegen ein Interface arbeitet.
 type SourceMailbox interface {
 	Folders() ([]Folder, error) // rekursiver Ordnerbaum
+	Count(folder string) (int, error)
 	Headers(folder string, limit, offset int) ([]MessageHeader, error)
 	FetchOne(folder string, uid uint32) (RawMessage, error)
 	Fetch(folder string, fn func(RawMessage) error) error // BODY[] FLAGS INTERNALDATE
@@ -92,6 +93,10 @@ func (s *imapSource) Fetch(folder string, fn func(RawMessage) error) error {
 	return s.mailbox.fetchEach(folder, fn)
 }
 
+func (s *imapSource) Count(folder string) (int, error) {
+	return s.mailbox.count(folder)
+}
+
 func (s *imapSource) Headers(folder string, limit, offset int) ([]MessageHeader, error) {
 	return s.mailbox.fetchHeaders(folder, limit, offset)
 }
@@ -193,6 +198,14 @@ func (m *imapClientMailbox) fetchEach(folder string, fn func(RawMessage) error)
 	return cmd.Close()
 }
 
+func (m *imapClientMailbox) count(folder string) (int, error) {
+	selected, err := m.c.Select(folder, &imap.SelectOptions{ReadOnly: true}).Wait()
+	if err != nil {
+		return 0, err
+	}
+	return int(selected.NumMessages), nil
+}
+
 func (m *imapClientMailbox) fetchHeaders(folder string, limit, offset int) ([]MessageHeader, error) {
 	selected, err := m.c.Select(folder, &imap.SelectOptions{ReadOnly: true}).Wait()
 	if err != nil {
diff --git a/backend/07-migrate.go b/backend/07-migrate.go
index 8190ac2..4bc7e01 100644
--- a/backend/07-migrate.go
+++ b/backend/07-migrate.go
@@ -210,12 +210,9 @@ func CheckAccount(name string) error {
 	}
 	total := 0
 	for _, folder := range folders {
-		folderTotal := 0
-		if err := src.Fetch(folder.Name, func(m RawMessage) error {
-			folderTotal++
-			return nil
-		}); err != nil {
-			return fmt.Errorf("fetch source %s %s: %w", a.Name, folder.Name, err)
+		folderTotal, err := src.Count(folder.Name)
+		if err != nil {
+			return fmt.Errorf("count source %s %s: %w", a.Name, folder.Name, err)
 		}
 		log.Printf("account %s source folder %s messages=%d", a.Name, folder.Name, folderTotal)
 		total += folderTotal