/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
 * This code is licensed under the GPL 2.0 license, available at the root
 * application directory.
 */
package org.geoserver.web.security.service;

import java.util.logging.Level;

import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.markup.html.form.validation.AbstractFormValidator;
import org.geoserver.security.impl.ServiceAccessRule;
import org.geoserver.security.impl.ServiceAccessRuleDAO;
import org.geoserver.web.wicket.ParamResourceModel;

/**
 * Adds a new rule to the data access set
 */
@SuppressWarnings("serial")
public class NewServiceAccessRulePage extends AbstractServiceAccessRulePage {

	public NewServiceAccessRulePage() {
		super(new ServiceAccessRule());
		form.add(new DuplicateRuleValidator());
	}

	@Override
	protected void onFormSubmit() {
		try {
			String roles = parseRole(rolesForComponent.getRolePalette()
					.getDefaultModelObjectAsString());
			ServiceAccessRule rule = new ServiceAccessRule((String) service
					.getConvertedInput(), (String) method
					.getConvertedInput(), roles);
			ServiceAccessRuleDAO dao = ServiceAccessRuleDAO.get();
			dao.addRule(rule);
			dao.storeRules();
			setResponsePage(ServiceAccessRulePage.class);
		} catch (Exception e) {
			LOGGER.log(Level.SEVERE, "Error occurred while saving user", e);
			error(new ParamResourceModel("saveError", getPage(), e.getMessage()));
		}
	}

	private String parseRole(String modelObjectAsString) {
		return modelObjectAsString.substring(1,
				modelObjectAsString.length() - 1);
	}

	/**
	 * Checks the same rule has not been entered before
	 * 
	 * @author aaime
	 * 
	 */
	class DuplicateRuleValidator extends AbstractFormValidator {
		public void validate(Form form) {
			ServiceAccessRule rule = new ServiceAccessRule((String) service
					.getConvertedInput(), (String) method
					.getConvertedInput(), rolesForComponent.getRolePalette()
					.getDefaultModelObjectAsString());
			if (ServiceAccessRuleDAO.get().getRules().contains(rule)) {
				form.error(new ParamResourceModel("duplicateRule", getPage(),
						rule.getKey()).getString());
			}
		}

		public FormComponent[] getDependentFormComponents() {
			return new FormComponent[] { service, method, rolesForComponent };
		}
	}

}