/* 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.data;

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.AccessMode;
import org.geoserver.security.impl.DataAccessRule;
import org.geoserver.security.impl.DataAccessRuleDAO;
import org.geoserver.web.wicket.ParamResourceModel;

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

    public NewDataAccessRulePage() {
        super(new DataAccessRule());
        form.add(new DuplicateRuleValidator());
    }

    @Override
    protected void onFormSubmit() {
        try {
            String roles = parseRole(rolesForComponent.getRolePalette().getDefaultModelObjectAsString());
            DataAccessRule rule = new DataAccessRule((String) workspace.getConvertedInput(),
                    (String) layer.getConvertedInput(),
                    (AccessMode) accessMode.getConvertedInput(), roles);
            DataAccessRuleDAO dao = DataAccessRuleDAO.get();
            dao.addRule(rule);
            dao.storeRules();
            setResponsePage(DataAccessRulePage.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) {
            DataAccessRule rule = new DataAccessRule((String) workspace.getConvertedInput(),
                    (String) layer.getConvertedInput(),
                    (AccessMode) accessMode.getConvertedInput(), rolesForComponent.getRolePalette()
                            .getDefaultModelObjectAsString());
            if (DataAccessRuleDAO.get().getRules().contains(rule)) {
                form.error(new ParamResourceModel("duplicateRule", getPage(), rule.getKey())
                        .getString());
            }
        }

        public FormComponent[] getDependentFormComponents() {
            return new FormComponent[] { workspace, layer, accessMode, rolesForComponent };
        }
    }

}