package net.sourceforge.solexatools.validation;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.sourceforge.seqware.common.model.RegistrationDTO;

import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
 * <p>
 * LoginValidator class.
 * </p>
 * 
 * @author boconnor
 * @version $Id: $Id
 */
public class LoginValidator implements Validator {
    /** Constant <code>CONST_AT_SIGN="@"</code> */
    protected static final String CONST_AT_SIGN = "@";

    /**
     * <p>
     * Constructor for LoginValidator.
     * </p>
     */
    public LoginValidator() {
        super();
    }

    /**
     * {@inheritDoc}
     * 
     * Returns true if this Validator supports the specified Class, and false otherwise.
     * 
     * @param clazz
     * @return
     */
    @Override
    public boolean supports(Class clazz) {
        return RegistrationDTO.class.equals(clazz);
    }

    /**
     * {@inheritDoc}
     * 
     * Validates the specified Object.
     * 
     * @param obj
     * @param errors
     */
    @Override
    public void validate(Object obj, Errors errors) {
        RegistrationDTO registration = (RegistrationDTO) obj;
        this.validateEmail("emailAddress", registration.getEmailAddress(), errors);
        ValidationUtils.rejectIfEmpty(errors, "password", "required.password");
    }

    /**
     * Validates an email address.
     * 
     * @param emailProperty
     *            email property name such as "emailAddress"
     * @param emailValue
     *            value of the email property
     * @param errors
     *            Errors object for validation errors
     */
    public void validateEmail(String emailProperty, String emailValue, Errors errors) {
        // if (emailValue == null || emailValue.indexOf(CONST_AT_SIGN) == -1) {
        // errors.rejectValue(emailProperty, "required." + emailProperty);
        // }

        if (emailValue == null || !isCheckEmail(emailValue)) {
            errors.rejectValue(emailProperty, "required." + emailProperty);
        }
    }

    /**
     * <p>
     * isCheckEmail.
     * </p>
     * 
     * @param emailValue
     *            a {@link java.lang.String} object.
     * @return a boolean.
     */
    public static boolean isCheckEmail(String emailValue) {
        boolean isValid = false;
        if (emailValue != null) {
            Pattern p = Pattern.compile(".+@.+\\.[a-z]+");
            Matcher m = p.matcher(emailValue);
            boolean matchFound = m.matches();

            if (matchFound) {
                isValid = true;
            } else {
                isValid = false;
            }
        }
        return isValid;
    }

}

// ex:sw=4:ts=4: