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

import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
import org.gcube.portlets.user.td.wizardwidget.client.WizardCard;
import org.gcube.portlets.user.td.codelistmappingimportwidget.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.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
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 CodelistMappingWorkSpaceSelectionCard extends WizardCard {

	protected CSVImportSession importSession;
	protected CodelistMappingWorkSpaceSelectionCard thisCard;

	protected Item item;
	protected VerticalLayoutContainer p;
	protected WorkspacePanel wpanel;

	public CodelistMappingWorkSpaceSelectionCard(
			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();
						if (caught instanceof TDGWTSessionExpiredException) {
							getEventBus()
									.fireEvent(
											new SessionExpiredEvent(
													SessionExpiredType.EXPIREDONSERVER));
						} else {
							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() {
		CodelistMappingTableDetailCard detailsCard = new CodelistMappingTableDetailCard(
				importSession);
		getWizardWindow().addCard(detailsCard);
		Log.info("NextCard CodelistMappingTableDetailCard");
		getWizardWindow().nextCard();

	}

}