package com.nordea.next.issuereproduction;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.annotation.WebServlet;

import org.apache.commons.io.IOUtils;

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.StreamResource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.*;

public class MyUI extends UI {

    @Override
    protected void init(VaadinRequest vaadinRequest) {
        final VerticalLayout layout = new VerticalLayout();

        Button button = new Button("Click Me", e -> showPdfInAWindow());
        layout.addComponent(button);
        setContent(layout);
    }

    private void showPdfInAWindow() {
        try {
            final String fileName = "some.pdf";
            final byte[] bytes = IOUtils.toByteArray(getClass().getResource(
                    "/" + fileName));
            StreamResource.StreamSource source = new StreamResource.StreamSource() {
                @Override
                public InputStream getStream() {
                    return new ByteArrayInputStream(bytes);
                }
            };

            StreamResource resource = new StreamResource(source, "some.pdf");

            resource.setMIMEType("application/pdf");
            resource.getStream().setParameter("Content-Disposition", "attachment; filename=" + fileName);
            resource.setCacheTime(-1);

            // Use browser frame
            BrowserFrame frame = new BrowserFrame();
            frame.setSizeFull();
            frame.setSource(resource);
            frame.setHeight("650px");
            Window pdfWindow = new Window("Management List Report");
            pdfWindow.center();
            pdfWindow.setModal(true);
            pdfWindow.setResizable(false);
            pdfWindow.setHeight("700px");
            pdfWindow.setWidth("900px");
            pdfWindow.setContent(frame);

            UI.getCurrent().addWindow(pdfWindow);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @WebServlet(urlPatterns = "/*", name = "MyUIServlet", asyncSupported = true)
    @VaadinServletConfiguration(ui = MyUI.class, productionMode = false)
    public static class MyUIServlet extends VaadinServlet {
    }
}