package org.gcube.portlets.user.gcubeloggedin.client;

import org.gcube.portlets.user.gcubeloggedin.shared.VObject;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.rpc.ServiceDefTarget;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.VerticalPanel;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class GCubeLoggedin implements EntryPoint {
	

	/**
	 * Create a remote service proxy to talk to the server-side Greeting service.
	 */
	private final LoggedinServiceAsync loggedinService = GWT.create(LoggedinService.class);
	private ServiceDefTarget endpoint = (ServiceDefTarget) loggedinService;
	private VerticalPanel main_panel = new VerticalPanel();
	/**
	 * This is the entry point method.
	 */
	public void onModuleLoad() {
		main_panel.setWidth("100%");

		endpoint.setServiceEntryPoint(GWT.getModuleBaseURL()+"LoggedinServiceImpl");
		main_panel.add(new HTML("<div style=\"height: 450px; text-align:center; vertical-align:text-top;\"><p><br /><br />Loading Environment please wait ...</p><p><br /><br /> " + getLoadingHTML() + "</p></div>" ));

		// Associate the new panel with the HTML host page.
		RootPanel.get("LoggedinDiv").add(main_panel);
		
		loggedinService.getSelectedRE(new AsyncCallback<VObject>() {

			public void onFailure(Throwable caught) {		
			}

			public void onSuccess(VObject result) {
				main_panel.clear();
				main_panel.add(getShowLoadedEnvPanel(result));
			}
			
		});
		
		//TEST 
		//main_panel.add(getShowLoadedEnvPanel(new VObject("ciccio", "ciccio", "dddd", "", "", null)));
	}
	
	/**
	 * 
	 * @param vobj
	 * @return
	 */
	private VerticalPanel getShowLoadedEnvPanel(VObject vobj) {

		VerticalPanel toReturn = new VerticalPanel();
		HorizontalPanel header = new HorizontalPanel();
	
		HTML scope;
		if (vobj == null)
			scope = new HTML("<strong>Layout Loaded, could not read Enviroment Description</strong>", true);
		else
			scope = new HTML("<strong>" + vobj.getGroupName() + "</strong>", true);
		header.add(scope);

		/**
		 * listener to go back and select another VRE/VO
		 */
		ClickHandler listener = new ClickHandler() {
			public void onClick(ClickEvent event) {
				main_panel.clear();
				main_panel.add(new HTML("<div style=\"height: 450px; text-align:center; vertical-align:text-top;\"><p><br /><br />Loading Environment please wait ...</p><p><br /><br /> " + getLoadingHTML() + "</p></div>" ));
				
				loggedinService.getDefaultCommunityURL(new AsyncCallback<String>() {
					public void onFailure(Throwable arg0) {
						Window.alert("We're sorry we couldn't reach the server, try again later ... " + arg0.getMessage());
					}
					public void onSuccess(String url) {
						Window.open(url, "_self", "");									
					}						
				});
				
			}			
		};
		HorizontalPanel topper = new HorizontalPanel();
		topper.getElement().getStyle().setMarginTop(20, Unit.PX);
		topper.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT);
		topper.setWidth("100%");
		Button selectAnotherTop = new Button("Change Environment");
		selectAnotherTop.setWidth("150px");
		selectAnotherTop.addClickHandler(listener);

		topper.add(selectAnotherTop);

		HorizontalPanel body = new HorizontalPanel();

		VerticalPanel leftPanel = new VerticalPanel();
		VerticalPanel rightPanel = new VerticalPanel();

		if (vobj != null) {
			leftPanel.add(new Image(vobj.getImageURL()));
			rightPanel.setWidth("100%");
			leftPanel.add(topper);
			HTML desc = new HTML(vobj.getDescription());
			desc.setStyleName("description");
			rightPanel.add(desc);
			rightPanel.setWidth("100%");
		}
		leftPanel.getElement().getStyle().setMarginRight(10, Unit.PX);
		leftPanel.setStyleName("framed");
		rightPanel.getElement().getStyle().setPaddingLeft(10, Unit.PX);
		rightPanel.setStyleName("framed");
		
		
		HorizontalPanel bottom = new HorizontalPanel();
		bottom.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_RIGHT);
		bottom.setWidth("100%");
		Button selectAnother = new Button("Change Environment");
		selectAnother.addClickHandler(listener);
		//bottom.add(selectAnother);
		rightPanel.add(new HTML("<br />"));
		rightPanel.add(bottom);		

		body.add(leftPanel);
		body.add(rightPanel);

		toReturn.add(body);
		return toReturn;

	}
	

	/**
	 * 
	 * @return
	 */
	private  String getLoadingHTML() {
		return 
		"<center><table border='0'>"+
		"<tr>"+
		"<td>"+
		"<img src='" + UIConstants.LOADING_IMAGE + "'>"+
		"</td></tr>"+
		"</table></center>" ;
	}
}