/**
 * 
 */
package org.gcube.portlets.user.td.csvimportwidget.client;

import org.gcube.portlets.user.td.wizardwidget.client.WizardCard;
import org.gcube.portlets.user.td.csvimportwidget.client.workspace.WorkspacePanel;
import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVImportSession;
import org.gcube.portlets.widgets.lighttree.client.Item;
import org.gcube.portlets.widgets.lighttree.client.ItemType;
import org.gcube.portlets.widgets.lighttree.client.event.ItemSelectionEvent;
import org.gcube.portlets.widgets.lighttree.client.event.ItemSelectionHandler;

import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;

/**
 * 
 * @author "Giancarlo Panichi" <a
 *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
 * 
 */
public class CSVWorkSpaceSelectionCard extends WizardCard {
	
	protected CSVImportSession importSession;
	protected CSVWorkSpaceSelectionCard thisCard;
	
	
	protected Item item;
	protected VerticalLayoutContainer p;
	protected WorkspacePanel wpanel;

	public CSVWorkSpaceSelectionCard(final CSVImportSession importSession) {
		super("CSV Import From Workspace", "");

		this.importSession = importSession;
		thisCard = this;
		
		p=new VerticalLayoutContainer();

		Log.debug("Set Workspace Panel");
		wpanel=new WorkspacePanel();
		wpanel.setSpWidth("536px");
		wpanel.setSpHeight("384px");
		//wpanel.setShowableTypes(ItemType.EXTERNAL_FILE);
		wpanel.setSelectableTypes(ItemType.EXTERNAL_FILE);
		wpanel.getSelectableTypes().remove(ItemType.ROOT);
		wpanel.getSelectableTypes().remove(ItemType.FOLDER);
		wpanel.setAllowedMimeTypes("text/csv", "application/zip", "application/x-zip", "application/x-zip-compressed", "application/octet","application/octet-stream");
		wpanel.addSelectionHandler(new ItemSelectionHandler() {
			
		
			public void onSelection(ItemSelectionEvent event) {
				item=event.getSelectedItem();
				Log.debug("Selected Item:"+item);
				if(item.getType()==ItemType.EXTERNAL_FILE){
					String filename=item.getName();
					if(filename!=null&&!filename.isEmpty()){
							Log.debug("Item name: "+filename);
							Log.debug("Item path: "+item.getPath());
							
							importSession.setItemId(item.getId());
							getWizardWindow().setEnableNextButton(true);	
							
					} else {
						Log.debug("Item name null or empty");
						getWizardWindow().setEnableNextButton(false);
					}
										
				} else {
					Log.debug("Item type:"+item.getType());
					getWizardWindow().setEnableNextButton(false);
				}
			}
		});
		p.add(wpanel);
		wpanel.loadTree();
		setContent(p);

	}

	
	
	
	@Override
	public void setup() {
		Log.debug("CSVWorkSpaceSelectionCard Call Setup ");
		Command sayNextCard = new Command() {

			public void execute() {
				Log.debug("CSVWorkSpaceSelectionCard Call sayNextCard wpanel:"+wpanel);
				wpanel.disable();
				wpanel.startWaiting();
				getWizardWindow().setEnableNextButton(false);
				getWizardWindow().setEnableBackButton(false);
				getFileFromWorkspace();
			}

		};

		getWizardWindow().setNextButtonCommand(sayNextCard);

		Command sayPreviousCard = new Command() {
			public void execute() {
				try {
					getWizardWindow().previousCard();
					getWizardWindow().removeCard(thisCard);
					Log.debug("Remove CSVWorkSpaceSelectionCard");
				} catch (Exception e) {
					Log.error("sayPreviousCard :" + e.getLocalizedMessage());
				}
			}
		};

		getWizardWindow().setPreviousButtonCommand(sayPreviousCard);
		getWizardWindow().setEnableNextButton(false);

	}
	
	protected void getFileFromWorkspace(){
		TDGWTServiceAsync tdGwtServiceAsync=TDGWTServiceAsync.INSTANCE;
		tdGwtServiceAsync.getFileFromWorkspace(importSession, new AsyncCallback<Void>(){

			public void onFailure(Throwable caught) {
				wpanel.endWaiting();
				thisCard.showErrorAndHide("Error", "Error retrieving the file from the workspace: "+caught.getLocalizedMessage(),
						caught.toString(), caught);
				
			}

			public void onSuccess(Void result) {
				wpanel.endWaiting();
				goForward();
				
			}
			
		});
		
	}
	
	protected void goForward(){	
				CSVConfigCard csvConfigCard = new CSVConfigCard(importSession);
				getWizardWindow().addCard(csvConfigCard);
				Log.info("NextCard CSVConfigCard");
				getWizardWindow().nextCard();
	
	}

	
}