add users

internal/repository/user_repository.go

@@ -182,13 +182,13 @@ func (r *UserRepositoryImpl) ListWithFilters(ctx context.Context, search *string
 	var users []*entities.User
 	var total int64
 
-	q := r.b.WithContext(ctx).Table("users").Model(&entities.User{})
+	q := r.b.WithContext(ctx).Model(&entities.User{})
 	if search != nil && *search != "" {
 		like := "%" + *search + "%"
-		q = q.Where("users.name ILIKE ?", like)
+		q = q.Where("name ILIKE ? OR email ILIKE ?", like, like)
 	}
 	if isActive != nil {
-		q = q.Where("users.is_active = ?", *isActive)
+		q = q.Where("is_active = ?", *isActive)
 	}
 	if roleCode != nil && *roleCode != "" {
 		q = q.Joins("JOIN user_role ur ON ur.user_id = users.id AND ur.removed_at IS NULL").
@@ -196,12 +196,40 @@ func (r *UserRepositoryImpl) ListWithFilters(ctx context.Context, search *string
 			Where("r.code = ?", *roleCode)
 	}
 
-	if err := q.Distinct("users.id").Count(&total).Error; err != nil {
+	if err := q.Count(&total).Error; err != nil {
 		return nil, 0, err
 	}
 
-	if err := q.Select("users.*").Distinct("users.id").Limit(limit).Offset(offset).Preload("Profile").Preload("Departments").Find(&users).Error; err != nil {
+	if err := q.Limit(limit).Offset(offset).Preload("Profile").Preload("Departments").Find(&users).Error; err != nil {
 		return nil, 0, err
 	}
 	return users, total, nil
 }
+
+// BulkCreate creates multiple users in a single database transaction
+func (r *UserRepositoryImpl) BulkCreate(ctx context.Context, users []*entities.User) error {
+	if len(users) == 0 {
+		return nil
+	}
+	
+	return r.b.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		// Create all users in a single batch
+		if err := tx.Create(&users).Error; err != nil {
+			return err
+		}
+		return nil
+	})
+}
+
+// CreateInBatches creates users in smaller batches to avoid memory issues
+func (r *UserRepositoryImpl) CreateInBatches(ctx context.Context, users []*entities.User, batchSize int) error {
+	if len(users) == 0 {
+		return nil
+	}
+	
+	if batchSize <= 0 {
+		batchSize = 100 // Default batch size
+	}
+	
+	return r.b.WithContext(ctx).CreateInBatches(users, batchSize).Error
+}