package org.gcube.portlets.user.geoportaldataviewer.client.ui;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.gcube.application.geoportalcommon.shared.GeoNaItemRef;
import org.gcube.application.geoportalcommon.shared.ItemField;
import org.gcube.application.geoportalcommon.shared.ResultSetPaginatedData;
import org.gcube.application.geoportalcommon.shared.SearchingFilter;
import org.gcube.application.geoportalcommon.shared.SearchingFilter.ORDER;
import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerConstants;
import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerServiceAsync;
import org.gcube.portlets.user.geoportaldataviewer.client.events.ShowDetailsEvent;
import org.gcube.portlets.user.geoportaldataviewer.client.events.ShowPopupOnCentroiEvent;
import org.gcube.portlets.user.geoportaldataviewer.client.util.LoaderIcon;
import org.gcube.portlets.user.geoportaldataviewer.client.util.StringUtil;

import com.github.gwtbootstrap.client.ui.Alert;
import com.github.gwtbootstrap.client.ui.Button;
import com.github.gwtbootstrap.client.ui.ListBox;
import com.github.gwtbootstrap.client.ui.NavLink;
import com.github.gwtbootstrap.client.ui.TextBox;
import com.github.gwtbootstrap.client.ui.constants.AlertType;
import com.github.gwtbootstrap.client.ui.constants.ButtonType;
import com.github.gwtbootstrap.client.ui.constants.IconType;
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.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
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.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;

public class SearchFacilityUI extends Composite {

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

	protected static final int MIN_LENGHT_SERCHING_STRING = 3;

	@UiField
	ListBox listBoxSortBy;

	@UiField
	ListBox listBoxSearchFor;

	@UiField
	TextBox searchField;

	@UiField
	NavLink sortByToogle;

	@UiField
	Button resetSearch;

	@UiField
	HTMLPanel panelResults;

	@UiField
	HorizontalPanel toogleSortBy;

	private List<ItemField> searchForFields;

	private List<ItemField> sortByFields;

	private SearchingFilter currentSortFilter;

	private HandlerManager appManagerBus;

	private static final String LABEL_FILTER_SEPARATOR = " - ";
	
	private ResultSetPaginatedData latestResult;

	interface SearchFacilityPanelUiBinder extends UiBinder<Widget, SearchFacilityUI> {
	}

	public SearchFacilityUI(HandlerManager appManagerBus, List<ItemField> sortByFields, List<ItemField> searchForFields,
			SearchingFilter initialSortFilter) {
		initWidget(uiBinder.createAndBindUi(this));
		this.searchForFields = searchForFields;
		this.currentSortFilter = initialSortFilter;
		this.sortByFields = sortByFields;
		this.appManagerBus = appManagerBus;

		resetSearch.setType(ButtonType.LINK);

		listBoxSortBy.setWidth("130px");
		listBoxSearchFor.setWidth("130px");

		bindEvents();
	}

	private String toLabelFilter(ItemField itemField, ORDER direction) {
		String labelFilter = itemField.getDisplayName() + LABEL_FILTER_SEPARATOR + direction.name();
		return labelFilter;
	}

	/**
	 * Bind events.
	 */
	private void bindEvents() {

		for (ItemField record_FIELD : sortByFields) {
			if(record_FIELD.isSortable()) {
				String labelASC = toLabelFilter(record_FIELD, ORDER.ASC);
				String labelDESC = toLabelFilter(record_FIELD, ORDER.DESC);
				listBoxSortBy.addItem(labelASC);
				listBoxSortBy.addItem(labelDESC);
			}
		}

		listBoxSortBy.addChangeHandler(new ChangeHandler() {

			@Override
			public void onChange(ChangeEvent event) {
				if(latestResult!=null && latestResult.getData().size()>0) {
					doSearchEvent();
				}
			}
		});

		for (ItemField record_FIELD : searchForFields) {
			GWT.log("search for: "+record_FIELD);
			if(record_FIELD.isSearchable()) {
				listBoxSearchFor.addItem(record_FIELD.getDisplayName());
			}
		}

		listBoxSearchFor.addChangeHandler(new ChangeHandler() {

			@Override
			public void onChange(ChangeEvent event) {
				if (searchField.getText().length() >= MIN_LENGHT_SERCHING_STRING) {
					doSearchEvent();
				}

			}
		});

		sortByToogle.addClickHandler(new ClickHandler() {

			@Override
			public void onClick(ClickEvent event) {
				if (toogleSortBy.isVisible())
					toogleSortBy.setVisible(false);
				else
					toogleSortBy.setVisible(true);

			}
		});

//		navShowOnMap.addClickHandler(new ClickHandler() {
//
//			@Override
//			public void onClick(ClickEvent event) {
//				List<ConcessioneDV> listConcessioni = null;
//				if (grpw != null && grpw.getSelectItems() != null) {
//					listConcessioni = grpw.getSelectItems();
//				}
//				appManagerBus
//						.fireEvent(new ActionOnItemEvent<ConcessioneDV>(listConcessioni, ACTION_ON_ITEM.VIEW_ON_MAP));
//
//			}
//		});

		searchField.addKeyPressHandler(new KeyPressHandler() {

			@Override
			public void onKeyPress(KeyPressEvent event) {
				if (com.google.gwt.event.dom.client.KeyCodes.KEY_ENTER == event.getCharCode()) {
					GWT.log(searchField.getText());
					doSearchEvent();
				}

			}
		});

		resetSearch.addClickHandler(new ClickHandler() {

			@Override
			public void onClick(ClickEvent event) {
				searchField.setText("");
				//appManagerBus.fireEvent(new GetListOfRecordsEvent(RECORD_TYPE.CONCESSIONE, getCurrentSortFilter()));
				resetSearch.setVisible(false);
				panelResults.clear();
				latestResult = null;
			}
		});

	}

	private void searchConcessioni() {

		SearchingFilter filter = getCurrentSortFilter();
		panelResults.clear();
		panelResults.add(new HTML("<hr>"));
		panelResults.add(new LoaderIcon("Searching..."));
		GeoportalDataViewerServiceAsync.Util.getInstance().getListConcessioni(0, 30, filter, false,
				new AsyncCallback<ResultSetPaginatedData>() {

					

					@Override
					public void onFailure(Throwable caught) {
//						showLoading(false);
//						Window.alert(caught.getMessage());
						panelResults.clear();
						panelResults.add(new HTML("<hr>"));
						Alert alert = new Alert("Error on searching. Please, refresh or change it");
						alert.setType(AlertType.ERROR);
						alert.setClose(false);
						panelResults.add(alert);
					}

					@Override
					public void onSuccess(ResultSetPaginatedData result) {
						
						latestResult = result;

						panelResults.clear();
						panelResults.add(new HTML("<hr>"));

						if (result.getData().size() == 0) {
							panelResults.add(new HTML("No result found"));
							return;
						}

						FlexTable ft = new FlexTable();
						ft.getElement().setClassName("table-results");
						int i = 1;
						ft.setWidget(0, i, new HTML("Nome Progetto"));

						String selValue = listBoxSearchFor.getSelectedValue().toLowerCase();
						
						boolean addIntroduction = false;
						if(selValue.startsWith("proj") || selValue.startsWith("any")) {
							ft.setWidget(0, ++i, new HTML("Introduzione"));
							addIntroduction = true;
						}
						
						boolean addStaff = false;
						if(selValue.startsWith("director")) {
							ft.setWidget(0, ++i, new HTML("Autori"));
							ft.setWidget(0, ++i, new HTML("Responsabile"));
							ft.setWidget(0, ++i, new HTML("Editore"));
							ft.setWidget(0, ++i, new HTML("Titolari"));
							ft.setWidget(0, ++i, new HTML("Contributore"));
							addStaff = true;
						}
						boolean addParole = false;
						if(selValue.startsWith("keyword")) {
							ft.setWidget(0, ++i, new HTML("Parole Libere"));
							ft.setWidget(0, ++i, new HTML("Parole Cronologia"));
							addParole = true;
						}

						i = 1;
						for (ConcessioneDV concessione : result.getData()) {
							int j = -1;
							
							NavLink locateOnMap = new NavLink("Show");
							locateOnMap.setTitle("Locate on the Map and show details");
							locateOnMap.setIcon(IconType.MAP_MARKER);
							
							locateOnMap.addClickHandler(new ClickHandler() {
								
								@Override
								public void onClick(ClickEvent event) {
									GeoNaItemRef gir = new GeoNaItemRef(concessione.getItemId(), GeoportalDataViewerConstants.RECORD_TYPE.CONCESSIONE.toString());
									appManagerBus.fireEvent(new ShowDetailsEvent(gir, null, null));
									appManagerBus.fireEvent(new ShowPopupOnCentroiEvent(concessione));
									
								}
							});
							
							ft.setWidget(i, ++j, locateOnMap);
							
							
							ft.setWidget(i, ++j, new HTML(concessione.getNome()));
							if(addIntroduction)
								ft.setWidget(i, ++j, new HTML(StringUtil.ellipsize(concessione.getIntroduzione(), 200)));
							
							if(addStaff) {
								ft.setWidget(i, ++j, new HTML(toDisplayList(concessione.getAuthors())));
								ft.setWidget(i, ++j, new HTML(toDisplayList(Arrays.asList(concessione.getResponsabile()))));
								ft.setWidget(i, ++j, new HTML(toDisplayList(Arrays.asList(concessione.getEditore()))));
								ft.setWidget(i, ++j, new HTML(toDisplayList(concessione.getTitolari())));
								ft.setWidget(i, ++j, new HTML(toDisplayList(Arrays.asList(concessione.getContributore()))));
							}
							
							if(addParole) {
								ft.setWidget(i, ++j, new HTML(toDisplayList(concessione.getParoleChiaveLibere())));
								ft.setWidget(i, ++j, new HTML(toDisplayList(concessione.getParoleChiaveICCD())));
							}
								
							
//							List<UploadedImageDV> listImg = concessione.getImmaginiRappresentative();
//							GWT.log(listImg.toString());
//							boolean imagePreviewFound = false;
//							if (listImg != null && listImg.size() > 0) {
//
//								UploadedImageDV uImg = listImg.get(0);
//
//								if (uImg != null && uImg.getListWsContent() != null
//										&& uImg.getListWsContent().size() > 0) {
//									WorkspaceContentDV wsc = uImg.getListWsContent().get(0);
//									String image = "<img style=\"width:50px;height:50px;\" src='" + wsc.getLink()
//											+ "' alt='" + wsc.getName() + "'>";
//									ft.setWidget(i, 2, new HTML(image));
//									imagePreviewFound = true;
//								}
//							}
//
//							if (!imagePreviewFound) {
//								ft.setWidget(i, 2, new Image(GNAImages.ICONS.italyIcon()));
//							}
							
							i++;
						}

						panelResults.add(ft);

					}
				});
	}
	
	/**
	 * To display authors.
	 *
	 * @param authors the authors
	 * @return the string
	 */
	private String toDisplayList(List<String> listValues) {
		String toDisplay = "";
		if (listValues == null)
			return toDisplay;

		for (String author : listValues) {
			toDisplay += author + "; ";
		}
		return toDisplay;
	}

	private void doSearchEvent() {
		String searchText = searchField.getText();
		if (searchText.length() < MIN_LENGHT_SERCHING_STRING) {
			Window.alert("Please enter at least " + MIN_LENGHT_SERCHING_STRING + " characters");
			return;
		}

		resetSearch.setVisible(true);
		// appManagerBus.fireEvent(new GetListOfRecordsEvent(RECORD_TYPE.CONCESSIONE,
		// getCurrentSortFilter()));

		searchConcessioni();
	}

	public SearchingFilter toSortFilter(String labelFilter) {
		GWT.log("toSortFilter for label " + labelFilter);
		String[] array = labelFilter.split(LABEL_FILTER_SEPARATOR);

		SearchingFilter sortFilter = null;
		try {
			ItemField recordField = null;
			for (ItemField value : sortByFields) {
				if (array[0].equalsIgnoreCase(value.getDisplayName())) {
					recordField = value;
					break;
				}
			}
			ORDER orderField = ORDER.valueOf(array[1]);
			sortFilter = new SearchingFilter(Arrays.asList(recordField), orderField);
		} catch (Exception e) {

		}
		GWT.log("toSortFilter Got " + sortFilter);
		return sortFilter;

	}

	private SearchingFilter builtSearchingFilter() {
		SearchingFilter searchingFilter = toSortFilter(listBoxSortBy.getSelectedValue());
		String searchText = searchField.getText();
		if (searchText != null && !searchText.isEmpty()) {
			Map<String, Object> searchInto = new HashMap<String, Object>();

			List<String> listOfSeachingFields = new ArrayList<String>();

			for (ItemField recordField : searchForFields) {
				if (recordField.getDisplayName().equals(listBoxSearchFor.getSelectedValue())) {
					listOfSeachingFields = recordField.getJsonFields();
					continue;
				}
			}
			
			if(listOfSeachingFields.size()==0) {
				listOfSeachingFields.add("nome");
			}
			for (String fieldname : listOfSeachingFields) {
				searchInto.put(fieldname, searchText);
			}
			
			searchingFilter.setSearchInto(searchInto);
		}
		return searchingFilter;
	}

	public SearchingFilter getCurrentSortFilter() {
		currentSortFilter = builtSearchingFilter();
		GWT.log("currentSortFilter: " + currentSortFilter);
		return currentSortFilter;
	}

}