package com.vaadin.tests.applicationcontext;

import javax.servlet.http.HttpSession;

import com.vaadin.server.Page;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinService;
import com.vaadin.server.VaadinSession;
import com.vaadin.server.WrappedHttpSession;
import com.vaadin.tests.components.AbstractReindeerTestUI;
import com.vaadin.tests.util.Log;
import com.vaadin.ui.Button;
import com.vaadin.ui.UI;

public class CloseSession extends AbstractReindeerTestUI {
    private static final String OLD_HASH_PARAM = "oldHash";
    private static final String OLD_SESSION_ID_PARAM = "oldSessionId";

    private final Log log = new Log(6);

    @Override
    protected void setup(VaadinRequest request) {
        System.out.println("UI " + getUIId() + " inited");

        final int sessionHash = getSession().hashCode();
        final String sessionId = request.getWrappedSession().getId();

        log.log("Current session hashcode: " + sessionHash);
        log.log("Current WrappedSession id: " + sessionId);

        // Log previous values to make it easier to see what has changed
        String oldHashValue = request.getParameter(OLD_HASH_PARAM);
        if (oldHashValue != null) {
            log.log("Old session hashcode: " + oldHashValue);
            log.log("Same hash as current? "
                    + oldHashValue.equals(Integer.toString(sessionHash)));
        }

        String oldSessionId = request.getParameter(OLD_SESSION_ID_PARAM);
        if (oldSessionId != null) {
            log.log("Old WrappedSession id: " + oldSessionId);
            log.log("Same WrappedSession id? "
                    + oldSessionId.equals(sessionId));
        }

        // Add parameters to help see what has changed
        final String reopenUrl = getPage().getLocation().getPath() + "?"
                + OLD_HASH_PARAM + "=" + sessionHash + "&"
                + OLD_SESSION_ID_PARAM + "=" + sessionId;

        addComponent(log);
        addComponent(
                new Button("Close VaadinServiceSession and redirect elsewhere",
                        event -> {
                            // Assuming Vaadin is deployed to the root
                            // context
                            getPage().setLocation(
                                    "/statictestfiles/static.html");
                            getSession().close();
                        }));
        addComponent(new Button("Close VaadinServiceSession and reopen page",
                event -> {
                    getPage().setLocation(reopenUrl);
                    getSession().close();
                }));
        addComponent(new Button("Just close VaadinSession",
                event -> getSession().close()));
        addComponent(new Button("Just close HttpSession",
                event -> getSession().getSession().invalidate()));
        addComponent(new Button("Invalidate HttpSession and reopen page",
                event -> {
                    VaadinService.getCurrentRequest().getWrappedSession()
                            .invalidate();
                    getPage().setLocation(reopenUrl);
                }));
        addComponent(new Button("Invalidate HttpSession and redirect elsewhere",
                event -> {
                    VaadinService.getCurrentRequest().getWrappedSession()
                            .invalidate();
                    getPage().setLocation("/statictestfiles/static.html");
                }));
        addComponent(new Button("Invalidate HttpSession in a background thread",
                event -> {
                    final HttpSession session = ((WrappedHttpSession) VaadinService
                            .getCurrentRequest().getWrappedSession())
                                    .getHttpSession();
                    Thread t = new Thread(() -> {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        System.out.println("Invalidating session from thread "
                                + session.getId());
                        session.invalidate();
                        System.out.println("Invalidated session from thread "
                                + session.getId());
                    });
                    t.start();
                }));
    }

    @Override
    protected String getTestDescription() {
        return "Test for closing the session and redirecting the user";
    }

    @Override
    protected Integer getTicketNumber() {
        return Integer.valueOf(9859);
    }

    @Override
    public void detach() {
        super.detach();
        log.log("Detach of " + this + " (" + getUIId() + ")");
        boolean correctUI = (UI.getCurrent() == this);
        boolean correctPage = (Page.getCurrent() == getPage());
        boolean correctVaadinSession = (VaadinSession
                .getCurrent() == getSession());
        boolean correctVaadinService = (VaadinService
                .getCurrent() == getSession().getService());
        log.log("UI.current correct in detach: " + correctUI);
        log.log("Page.current correct in detach: " + correctPage);
        log.log("VaadinSession.current correct in detach: "
                + correctVaadinSession);
        log.log("VaadinService.current correct in detach: "
                + correctVaadinService);
    }
}