backend: add: DeleteUser, fix: validation

internal/repositories/user_repository.go

@@ -21,10 +21,15 @@ type UserRepositoryInterface interface {
 	SetVerificationToken(verification *models.Verification) (uint, error)
 	IsVerified(userID *uint) (bool, error)
 	GetVerificationOfToken(token *string) (*models.Verification, error)
+	DeleteUser(id uint) error
 }
 
 type UserRepository struct{}
 
+func (ur *UserRepository) DeleteUser(id uint) error {
+	return database.DB.Delete(&models.User{}, "id = ?", id).Error
+}
+
 func PasswordExists(userID *uint) (bool, error) {
 	var user models.User
 	result := database.DB.Select("password").First(&user, userID)
@@ -60,7 +65,7 @@ func (ur *UserRepository) UpdateUser(user *models.User) (*models.User, error) {
 			return err
 		}
 		// Update the user's main fields
-		result := tx.Session(&gorm.Session{FullSaveAssociations: true}).Updates(user)
+		result := tx.Session(&gorm.Session{FullSaveAssociations: true}).Omit("Password").Updates(user)
 		if result.Error != nil {
 			return result.Error
 		}
@@ -68,6 +73,14 @@ func (ur *UserRepository) UpdateUser(user *models.User) (*models.User, error) {
 			return errors.ErrNoRowsAffected
 		}
 
+		if user.Password != "" {
+			if err := tx.Model(&models.User{}).
+				Where("id = ?", user.ID).
+				Update("Password", user.Password).Error; err != nil {
+				return err
+			}
+		}
+
 		// Update the Membership if provided
 		if user.Membership.ID != 0 {
 			if err := tx.Model(&existingUser.Membership).Updates(user.Membership).Error; err != nil {