package org.gcube.portlets.user.geoportaldataentry.client.ui.edit;

import org.gcube.application.geoportalcommon.shared.geoportal.config.GcubeProfileDV;
import org.gcube.application.geoportaldatamapper.shared.MetaDataProfileBeanExt;
import org.gcube.application.geoportaldatamapper.shared.ProjectEdit;
import org.gcube.portlets.user.geoportaldataentry.client.GeoPortalDataEntryApp;
import org.gcube.portlets.user.geoportaldataentry.client.GeoportalDataEntryServiceAsync;
import org.gcube.portlets.user.geoportaldataentry.client.ui.card.GeoNaFormCardModel;
import org.gcube.portlets.user.geoportaldataentry.client.ui.utils.LoaderIcon;
import org.gcube.portlets.widgets.mpformbuilder.client.form.generic.CreateMetadataForm.OPERATION;

import com.github.gwtbootstrap.client.ui.Alert;
import com.github.gwtbootstrap.client.ui.ControlGroup;
import com.github.gwtbootstrap.client.ui.ListBox;
import com.github.gwtbootstrap.client.ui.constants.AlertType;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.Widget;

public class UpdateRecord extends Composite {

	private static UpdateRecordUiBinder uiBinder = GWT.create(UpdateRecordUiBinder.class);

	interface UpdateRecordUiBinder extends UiBinder<Widget, UpdateRecord> {
	}

	@UiField
	ListBox listBoxSections;

	@UiField
	ScrollPanel scrollSectionContent;

	@UiField
	HTMLPanel htmlPanelContainer;

	@UiField
	HTMLPanel alertHTMLPanel;

	@UiField
	ControlGroup controlsControlGroup;

	public static final String PLACEHOLDER_LIST_BOX = "Select section...";

	private LoaderIcon loaderProjectSections = new LoaderIcon("Loading Project sections..., please wait");

	public UpdateRecord(HandlerManager editorManagerBus, String profileID, String projectID) {
		initWidget(uiBinder.createAndBindUi(this));

		htmlPanelContainer.setVisible(false);

		alertHTMLPanel.add(loaderProjectSections);
		
		scrollSectionContent.getElement().getStyle().setProperty("maxHeight", "500px");
		
		GeoportalDataEntryServiceAsync.Util.getInstance().getProjectEdit(profileID, projectID,
				new AsyncCallback<ProjectEdit>() {

					@Override
					public void onSuccess(ProjectEdit result) {
						htmlPanelContainer.setVisible(true);

						try {
							alertHTMLPanel.remove(loaderProjectSections);
						} catch (Exception e) {

						}

						listBoxSections.addItem(PLACEHOLDER_LIST_BOX, PLACEHOLDER_LIST_BOX);

						for (final MetaDataProfileBeanExt profileBean : result.getTheProfileBeans()) {
							listBoxSections.addItem(profileBean.getType(), profileBean.getType());
						}

						listBoxSections.addChangeHandler(new ChangeHandler() {

							@Override
							public void onChange(ChangeEvent event) {
								MetaDataProfileBeanExt selectedBean = result.getTheProfileBeans()
										.get(listBoxSections.getSelectedIndex() - 1); // -1 because the first element is
																						// the PLACEHOLDER "Select
																						// section..."
								GWT.log("Change handler fired " + selectedBean);
								controlsControlGroup.setVisible(true);
								scrollSectionContent.clear();

								GcubeProfileDV gcubeProfile = selectedBean.getGcubeProfileDV();

								GeoNaFormCardModel formcard = GeoPortalDataEntryApp.buildNewFormCardModelFromProfile(
										gcubeProfile, 1, selectedBean, OPERATION.UPDATE, editorManagerBus);
								scrollSectionContent.add(formcard.getMetadataForm());

							}
						});

					}

					@Override
					public void onFailure(Throwable caught) {
						htmlPanelContainer.setVisible(true);
						alertHTMLPanel.remove(loaderProjectSections);

						String errorMsg = caught.getMessage();
						Alert alert = new Alert(errorMsg, AlertType.ERROR);
						alert.setClose(false);
						try {
							alertHTMLPanel.remove(loaderProjectSections);
						} catch (Exception e) {

						}
						alertHTMLPanel.add(alert);
						Window.alert(errorMsg);

					}
				});
	}

}