package org.springframework.samples.petclinic.validation;

import org.springframework.samples.petclinic.Owner;
import org.springframework.util.StringUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
 * <code>Validator</code> for <code>Owner</code> forms.
 *
 * @author Ken Krebs
 * @author Juergen Hoeller
 */
public class OwnerValidator implements Validator {

	public boolean supports(Class clazz) {
		return Owner.class.isAssignableFrom(clazz);
	}

	public void validate(Object obj, Errors errors) {
		Owner owner = (Owner) obj;

		ValidationUtils.rejectIfEmpty(errors, "firstName", "required", "required");
		ValidationUtils.rejectIfEmpty(errors, "lastName", "required", "required");
		ValidationUtils.rejectIfEmpty(errors, "address", "required", "required");
		ValidationUtils.rejectIfEmpty(errors, "city", "required", "required");

		String telephone = owner.getTelephone();
		if (!StringUtils.hasLength(telephone)) {
			errors.rejectValue("telephone", "required", "required");
		}
		else {
			for (int i = 0; i < telephone.length(); ++i) {
				if ((Character.isDigit(telephone.charAt(i))) == false) {
					errors.rejectValue("telephone", "nonNumeric", "non-numeric");
					break;
				}
			}
		}
	}

}