update api incoming letter

internal/repository/letter_repository.go

@@ -463,6 +463,33 @@ func (r *LetterIncomingDispositionRepository) ListByLetter(ctx context.Context,
 	return list, nil
 }
 
+func (r *LetterIncomingDispositionRepository) ListByLetterIDs(ctx context.Context, letterIDs []uuid.UUID) (map[uuid.UUID][]entities.LetterIncomingDisposition, error) {
+	if len(letterIDs) == 0 {
+		return make(map[uuid.UUID][]entities.LetterIncomingDisposition), nil
+	}
+
+	db := DBFromContext(ctx, r.db)
+	var dispositions []entities.LetterIncomingDisposition
+	if err := db.WithContext(ctx).Where("letter_id IN ?", letterIDs).
+		Preload("Department").
+		Preload("Departments.Department").
+		Preload("ActionSelections.Action").
+		Preload("DispositionNotes.User").
+		Order("created_at ASC").
+		Find(&dispositions).Error; err != nil {
+		return nil, err
+	}
+
+	// Group by letter ID
+	result := make(map[uuid.UUID][]entities.LetterIncomingDisposition)
+	for i := range dispositions { // Gunakan index, bukan value
+		letterID := dispositions[i].LetterID
+		result[letterID] = append(result[letterID], dispositions[i])
+	}
+
+	return result, nil
+}
+
 func (r *LetterIncomingDispositionRepository) GetByLetterIncomingID(ctx context.Context, letterIncomingID uuid.UUID) ([]entities.LetterIncomingDisposition, error) {
 	db := DBFromContext(ctx, r.db)
 	var list []entities.LetterIncomingDisposition