/*
 * Copyright 2005-2010 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wamblee.photos.wicket;

import java.security.Principal;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;

import org.apache.wicket.RedirectToUrlException;
import org.apache.wicket.markup.html.CSSPackageResource;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.IModel;
import org.wamblee.security.authentication.UserAdministration;
import org.wamblee.wicket.behavior.TitleAttributeTooltipBehavior;
import org.wamblee.wicket.css.ResetCssBehavior;
import org.wamblee.wicket.page.ExpireBehavior;
import org.wamblee.wicket.page.WebApplicationBasePage;

public class BasePage extends WebApplicationBasePage {

    @Inject
    private HttpServletRequest request;

    @Inject
    private transient UserAdministration userAdmin;

    private boolean isExpired = false;

    public BasePage() {
        this(null);
    }

    public BasePage(IModel aModel) {
        super(aModel);

        Principal userPrincipal = request.getUserPrincipal();
        if (userPrincipal == null) {
            throw redirectToLoginPage();
        }
        String username = userPrincipal.getName();
        if (isAdminPage() && !isAdministrator(username)) {
            error("Unauthorized URL accessed");
            throw redirectToLoginPage();
        }

        add(new ResetCssBehavior());
        add(new TitleAttributeTooltipBehavior());
        add(CSSPackageResource.getHeaderContribution(BasePage.class, "photos.css"));
        disableCaching();

        add(new FeedbackPanel("feedback"));
        add(new Label("title", getTitle()));

        addBehavior(new ExpireBehavior() {
            @Override
            protected boolean isExpired(WebPage aPage) {
                return isExpired;
            }
        });

        add(new Link("logout") {
            @Override
            public void onClick() {
                getRequestCycle().getSession().invalidate();
                throw redirectToLoginPage();
            }
        });

        WebMarkupContainer adminAccess = new WebMarkupContainer("adminAccess");
        if (!isAdministrator(username)) {
            adminAccess.setVisible(false);
        }
        add(adminAccess);
    }

    protected boolean isAdminPage() {
        return false;
    }

    protected boolean isAdministrator(String aUsername) {
        return userAdmin.isInGroup(aUsername, "administrators");
    }

    private RedirectToUrlException redirectToLoginPage() {
        return new RedirectToUrlException("login.jsp");
    }

    public void setExpired(boolean aExpired) {
        isExpired = aExpired;
    }

    private String getTitle() {
        String name = getClass().getSimpleName();
        name = name.replaceAll("([A-Z]+)([A-Z][a-z])", "$1 $2");
        name = name.replaceAll("[A-Z]+", " $0");
        name = name.replaceAll("^ ", "");
        name = name.replaceAll("  ", " ");
        return name;
    }
}