/*
 * PatientView
 *
 * Copyright (c) Worth Solutions Limited 2004-2013
 *
 * This file is part of PatientView.
 *
 * PatientView is free software: you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * PatientView is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License along with PatientView in a file
 * titled COPYING. If not, see <http://www.gnu.org/licenses/>.
 *
 * @package PatientView
 * @link http://www.patientview.org
 * @author PatientView <info@patientview.org>
 * @copyright Copyright (c) 2004-2013, Worth Solutions Limited
 * @license http://www.gnu.org/licenses/gpl-3.0.html The GNU General Public License V3.0
 */

package org.patientview.radar.web.pages.login;

import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton;
import org.apache.wicket.feedback.FeedbackMessage;
import org.apache.wicket.feedback.IFeedbackMessageFilter;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.link.ExternalLink;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.spring.injection.annot.SpringBean;
import org.patientview.radar.model.user.PatientUser;
import org.patientview.radar.service.UserManager;
import org.patientview.radar.util.RadarUtility;
import org.patientview.radar.web.RadarSecuredSession;
import org.patientview.radar.web.components.RadarRequiredPasswordTextField;
import org.patientview.radar.web.components.RadarRequiredTextField;
import org.patientview.radar.web.pages.BasePage;
import org.patientview.radar.web.pages.patient.srns.SrnsPatientPageReadOnly;

import java.util.ArrayList;
import java.util.List;

public class PatientsLoginPage extends BasePage {

    public static final String LOGIN_FAILED_MESSAGE = "Login failed";
    @SpringBean
    private UserManager userManager;

    public PatientsLoginPage() {
        // Patients log in form
        CompoundPropertyModel<PatientUser> model = new CompoundPropertyModel<PatientUser>(new PatientUser());
        final Model<String> passwordModel = new Model<String>();

        // components to update on ajax
        final List<Component> componentsToUpdateList = new ArrayList<Component>();

        Form<PatientUser> form = new Form<PatientUser>("form", model) {
            @Override
            protected void onSubmit() {
                RadarSecuredSession session = RadarSecuredSession.get();
                PatientUser user = getModelObject();
                boolean loginFailed = false;
                PatientUser patientUser = userManager.getPatientUserWithUsername(user.getUsername());

                if (patientUser != null) {
                    if (session.signIn(user.getUsername(), passwordModel.getObject())) {
                        session.setUser(patientUser);
                        // If we haven't been diverted here from a page request (i.e. we clicked login),
                        // redirect to logged in page
                        setResponsePage(SrnsPatientPageReadOnly.class, SrnsPatientPageReadOnly.getParameters(
                                patientUser.getRadarNumber()));

                    } else {
                        loginFailed = true;
                    }
                } else {
                    loginFailed = true;
                }

                if (loginFailed) {
                    // Show that the login failed if we couldn't authenticate
                    error(LOGIN_FAILED_MESSAGE);
                }
            }
        };
        add(form);

        // Add components to form
        form.add(new RadarRequiredTextField("username", form, componentsToUpdateList));
        RadarRequiredPasswordTextField password = new RadarRequiredPasswordTextField("password", form,
                componentsToUpdateList);
        form.add(password);
        password.setModel(passwordModel);

        // Construct feedback panel
        final FeedbackPanel feedbackPanel = new FeedbackPanel("feedback", new IFeedbackMessageFilter() {
            public boolean accept(FeedbackMessage feedbackMessage) {
                String message = feedbackMessage.getMessage().toString();
                return message.contains(LOGIN_FAILED_MESSAGE);
            }
        });
        form.add(feedbackPanel);
        componentsToUpdateList.add(feedbackPanel);
        feedbackPanel.setOutputMarkupPlaceholderTag(true);

        form.add(new IndicatingAjaxButton("submit") {
            @Override
            protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
                target.add(componentsToUpdateList.toArray(new Component[componentsToUpdateList.size()]));
            }

            @Override
            protected void onError(AjaxRequestTarget target, Form<?> form) {
                target.add(componentsToUpdateList.toArray(new Component[componentsToUpdateList.size()]));
            }
        });

        // Add links for forgotten password and register
        String patientViewUrl = RadarUtility.getProperty("config.patientview.site.url");
        add(new ExternalLink("forgottenPasswordLink", patientViewUrl + "forgotten-password.do"));


    }
}