/**
 *
 */
package org.gcube.portlets.user.performfishanalytics.client.viewannualbinder;

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

import org.gcube.portlets.user.performfishanalytics.client.DataMinerAlgorithms;
import org.gcube.portlets.user.performfishanalytics.client.PerformFishAnalyticsServiceAsync;
import org.gcube.portlets.user.performfishanalytics.client.controllers.PerformFishAnalyticsController;
import org.gcube.portlets.user.performfishanalytics.client.event.CallAlgorithmEvent;
import org.gcube.portlets.user.performfishanalytics.client.view.util.CorrelationValueToColourUtil;
import org.gcube.portlets.user.performfishanalytics.shared.FileContentType;
import org.gcube.portlets.user.performfishanalytics.shared.KPI;
import org.gcube.portlets.user.performfishanalytics.shared.OutputFile;
import org.gcube.portlets.user.performfishanalytics.shared.csv.CSVFile;
import org.gcube.portlets.user.performfishanalytics.shared.csv.CSVRow;
import org.gcube.portlets.user.performfishanalytics.shared.dataminer.DataMinerResponse;

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.github.gwtbootstrap.client.ui.constants.ControlGroupType;
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.event.logical.shared.AttachEvent;
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.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.ComplexPanel;
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.Label;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * The Class AnalyticsPanelResult.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it Jan 29, 2019
 */
public class AnalyticsAnnualPanelResult extends Composite {

	/**
	 *
	 */

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

	/**
	 * The Interface AnalyticsPanelResultUiBinder.
	 *
	 * @author Francesco Mangiacrapa at ISTI-CNR
	 *         (francesco.mangiacrapa@isti.cnr.it) Jan 30, 2019
	 */
	interface AnalyticsPanelResultUiBinder extends UiBinder<Widget, AnalyticsAnnualPanelResult> {
	}

	@UiField
	HTMLPanel field_html_panel;

	@UiField
	VerticalPanel field_parameters_container;

	@UiField
	VerticalPanel uib_vp_correlation_results_container;

	@UiField
	VerticalPanel field_unary_algorithm_container;

	@UiField
	VerticalPanel field_binary_algorithm;

	@UiField
	VerticalPanel field_binary_algorithm_container;

	@UiField
	VerticalPanel field_unary_algorithm;

	@UiField
	Label uib_label_focus_id;

	@UiField
	ControlGroup cg_focus_id_correlation;

	@UiField
	ListBox field_list_focus_id_correlation;

	private Map<String, String> dataInputParameters;

	private DataMinerResponse dmResponse;

	private Map<String, List<KPI>> kpiMapPointers = new HashMap<String, List<KPI>>();

	private List<KPI> selectedKPIs;

	private List<String> selectedAreas;

	// private HandlerManager theEventBus;

	private Map<String, CSVFile> csvGenerated = new HashMap<String, CSVFile>();

	/**
	 * Because this class has a default constructor, it can be used as a binder
	 * template. In other words, it can be used in other *.ui.xml files as
	 * follows: <ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder" xmlns:g=
	 * "urn:import:**user's package**">
	 * <g:**UserClassName**>Hello!</g:**UserClassName> </ui:UiBinder> Note that
	 * depending on the widget that is used, it may be necessary to implement
	 * HasHTML instead of HasText.
	 */
	public AnalyticsAnnualPanelResult(HandlerManager eventBus) {

		initWidget(uiBinder.createAndBindUi(this));
		// this.theEventBus = eventBus;
	}

	/**
	 * Adds the selected areas.
	 *
	 * @param listAreas
	 *            the list areas
	 */
	public void addSelectedAreas(List<String> listAreas) {

		this.selectedAreas = listAreas;

	}

	/**
	 * Gets the data miner response.
	 *
	 * @return the data miner response
	 */
	public DataMinerResponse getDataMinerResponse() {
		return dmResponse;
	}

	/**
	 * Gets the data input parameters.
	 *
	 * @return the data input parameters
	 */
	public Map<String, String> getDataInputParameters() {

		return dataInputParameters;
	}

	/**
	 * Show alert.
	 *
	 * @param error
	 *            the error
	 * @param type
	 *            the type
	 * @param closable
	 *            the closable
	 * @param panel
	 *            the panel
	 */
	private void showAlert(String error, AlertType type, boolean closable, ComplexPanel panel) {
		Alert alert = new Alert(error);
		alert.setType(type);
		alert.setClose(closable);
		alert.getElement().getStyle().setMargin(10, Unit.PX);
		panel.add(alert);
	}

	/**
	 * Adds the selected kp is.
	 *
	 * @param selectedKPIs
	 *            the selected kp is
	 */
	public void addSelectedKPIs(List<KPI> selectedKPIs) {

		this.selectedKPIs = selectedKPIs;

	}

	public KPI getKPIForName(String name) {

		GWT.log("Searching KPI name: " + name + " into: ");
		for (KPI kpi : selectedKPIs) {
			GWT.log("selected: " + kpi.getName());
		}

		KPI foundKPI = null;
		String purgedName = name.trim();
		for (KPI kpi : selectedKPIs) {
			String purgedKPIName = kpi.getName().trim();
			if (purgedKPIName.compareToIgnoreCase(purgedName) == 0) {
				foundKPI = kpi;
				break;
			}
		}
		GWT.log("FOUND KPI: " + foundKPI);
		return foundKPI;
	}

	/**
	 * Adds the parameters.
	 *
	 * @param keyToGet
	 *            the key to get
	 * @param parameters
	 *            the parameters
	 * @param toShowBatchTypeValue
	 *            label to show batch type value
	 */
	public void addParameters(String keyToGet, Map<String, List<String>> parameters, String toShowBatchTypeValue) {

		final FlexTable flexTable = new FlexTable();
		flexTable.setStyleName("colgrouptable");

		try {
			List<String> dataInputs = parameters.get(keyToGet);

			if (dataInputs == null || dataInputs.isEmpty())
				return;

			dataInputParameters = new HashMap<String, String>();

			String theDataInputs = dataInputs.get(0);
			String[] splittedParams = theDataInputs.split(";");

			for (String splitParam : splittedParams) {
				try {
					String[] keyvalue = splitParam.split("=");
					dataInputParameters.put(keyvalue[0], keyvalue[1]);
				} catch (Exception e) {

				}
			}

			flexTable.setWidget(0, 0, new HTML("Batch Type:"));
			flexTable.setWidget(0, 1, new HTML(toShowBatchTypeValue));
			//flexTable.setWidget(1, 0, new HTML("Level:"));
			//flexTable.setWidget(1, 1, new HTML(dataInputParameters.get(PerformFishAnalyticsConstant.DM_SCALEP_PARAM)));

			String KPINames = "";
			for (KPI kpi : selectedKPIs) {
				KPINames += kpi.getName() + ", ";
			}
			KPINames = KPINames.substring(0, KPINames.length() - 2);
			flexTable.setWidget(2, 0, new HTML("KPIs:"));
			flexTable.setWidget(2, 1, new HTML(KPINames));

			

		} catch (Exception e) {
			// silent
		}

		field_parameters_container.add(flexTable);
	}

	/**
	 * Adds the list batch ids.
	 *
	 * @param listBatchesID
	 *            the list batches id
	 */
	public void addListBatchIds(List<String> listBatchesID) {
		for (String batchID : listBatchesID) {
			field_list_focus_id_correlation.addItem(batchID, batchID);
		}
	}

	/**
	 * Adds the results.
	 *
	 * @param dmResponse
	 *            the dm response
	 */
	public void addResults(DataMinerResponse dmResponse) {

		this.dmResponse = dmResponse;

		for (final OutputFile outputFile : dmResponse.getListOutput()) {

			if (outputFile.getDataType().equals(FileContentType.CSV)) {
				PerformFishAnalyticsServiceAsync.Util.getInstance().getCSVFile(outputFile, true,
						new AsyncCallback<CSVFile>() {

							@Override
							public void onFailure(Throwable caught) {
								showAlert(caught.getMessage(), AlertType.ERROR, true,
										uib_vp_correlation_results_container);

							}

							@Override
							public void onSuccess(CSVFile result) {

								csvGenerated.put(result.getFileName(), result);
								fillCorrelationMatrix();
							}
						});
			}

		}
	}

	/**
	 * Fill correlation matrix.
	 */
	private void fillCorrelationMatrix() {

		if (csvGenerated.size() < 2)
			return;

		String corrIndexFilename = null;
		String corrFilename = null;
		for (String fileName : csvGenerated.keySet()) {
			if (fileName.contains("index")) {
				corrIndexFilename = fileName;
			} else {
				corrFilename = fileName;
			}
		}

		GWT.log("Correlation Matrix Index File: " + corrIndexFilename);
		GWT.log("Correlation Matrix File: " + corrFilename);
		CSVFile corrIndexCsvFile = csvGenerated.get(corrIndexFilename);
		CSVFile corrCsvFile = csvGenerated.get(corrFilename);
		GWT.log("Correlation Matrix Index CSV: " + corrIndexCsvFile);
		GWT.log("Correlation Matrix CSV: " + corrCsvFile);

		HorizontalPanel hp = new HorizontalPanel();
		final FlexTable flexTable = new FlexTable();
		flexTable.setStyleName("fixedtable");
		flexTable.getElement().getStyle().setMarginBottom(10, Unit.PX);

		flexTable.setWidget(0, 0, new Label(""));

		CSVRow headerRow = corrIndexCsvFile.getHeaderRow();
		// HEADER
		for (int i = 1; i < headerRow.getListValues().size(); i++) {

			final String headerValue = headerRow.getListValues().get(i);
			HTML label = new HTML(headerValue);
			label.getElement().getStyle().setFontSize(16, Unit.PX);

			final int columnIndex = i;
			KPI kpi = getKPIForName(headerValue);
			fillKPIReferenceForIndex(0, columnIndex, Arrays.asList(kpi));
			flexTable.setWidget(0, i, label);
		}
		// DATA
		for (int i = 0; i < corrIndexCsvFile.getValueRows().size(); i++) {
			CSVRow row = corrIndexCsvFile.getValueRows().get(i);
			CSVRow rowMatrixColor = corrCsvFile.getValueRows().get(i);
			final int rowIndex = i + 1; // adding +1 for header row
			for (int j = 0; j < row.getListValues().size(); j++) {
				final String rowValue = row.getListValues().get(j);
				final String rowMatrixColorValue = rowMatrixColor.getListValues().get(j);
				final String theColor = CorrelationValueToColourUtil.getRGBColor(rowMatrixColorValue);
				final int columnIndex = j;
				// final Button button = new Button(rowValue);
				final HTML buttonHTML = new HTML(rowValue);
				buttonHTML.addStyleName("my-active-html");

				// only the first column
				if (j == 0) {
					HTML label = new HTML(rowValue);
					label.getElement().getStyle().setFontSize(16, Unit.PX);
					flexTable.setWidget(rowIndex, j, label);
					// rowValue is a KPI name
					KPI kpi = getKPIForName(rowValue);
					fillKPIReferenceForIndex(rowIndex, columnIndex, Arrays.asList(kpi));
					continue;
				} else {
					if (rowIndex == j) { // diagonal
						HTML dg = new HTML(rowValue);
						dg.getElement().getStyle().setFontSize(18, Unit.PX);
						flexTable.setWidget(rowIndex, j, dg);
						continue;
						// j > 0
					} else {
						KPI columnKPI = getKPIForName(headerRow.getListValues().get(columnIndex));
						// Here the first index is the KPI name
						KPI rowKPI = getKPIForName(row.getListValues().get(0));
						fillKPIReferenceForIndex(rowIndex, columnIndex, Arrays.asList(columnKPI, rowKPI));

						buttonHTML.addClickHandler(new ClickHandler() {

							@Override
							public void onClick(ClickEvent event) {

								// callScatterAndDeaChart(rowIndex, columnIndex,
								// button);
								callScatter(rowIndex, columnIndex, buttonHTML);
							}
						});
					}
				}

				if (j > 0)
					buttonHTML.getElement().getStyle().setColor("#000");

				buttonHTML.addAttachHandler(new AttachEvent.Handler() {

					@Override
					public void onAttachOrDetach(AttachEvent event) {
						if (theColor.startsWith("#")) {
							GWT.log("Setting backgrounf color: " + theColor);
							buttonHTML.getElement().getParentElement().getStyle().setBackgroundColor(theColor);
						}
					}
				});

				flexTable.setWidget(rowIndex, j, buttonHTML);
			}

		}

		hp.add(flexTable);

		final FlexTable flexLegend = new FlexTable();
		flexLegend.setStyleName("simpletable");
		Map<String, String> map = CorrelationValueToColourUtil.getMap();
		flexLegend.setWidget(0, 0, new Label("Legend"));
		flexLegend.setWidget(0, 1, new HTML(""));
		int i = 1;
		for (String key : map.keySet()) {
			final String rgbColor = map.get(key);
			final HTML theLegendColor = new HTML("");
			flexLegend.setWidget(i, 0, theLegendColor);
			flexLegend.setWidget(i, 1, new HTML(key));
			theLegendColor.addAttachHandler(new AttachEvent.Handler() {

				@Override
				public void onAttachOrDetach(AttachEvent event) {
					theLegendColor.getElement().getParentElement().getStyle().setBackgroundColor(rgbColor);
				}
			});

			i++;
		}

		flexLegend.getElement().getStyle().setMarginLeft(15, Unit.PX);
		hp.add(flexLegend);
		uib_vp_correlation_results_container.insert(hp, 0);

	}

	/**
	 * Fill kpi reference for index.
	 *
	 * @param rowIndex
	 *            the row index
	 * @param columnIndex
	 *            the column index
	 * @param listKPI
	 *            the list kpi
	 */
	private void fillKPIReferenceForIndex(int rowIndex, int columnIndex, List<KPI> listKPI) {

		String key = generateKey(rowIndex, columnIndex);
		kpiMapPointers.put(key, listKPI);
	}

	/**
	 * Gets the KPI for indexes.
	 *
	 * @param rowIndex
	 *            the row index
	 * @param columnIndex
	 *            the column index
	 * @return the KPI for indexes
	 */
	public List<KPI> getKPIForIndexes(int rowIndex, int columnIndex) {
		String key = generateKey(rowIndex, columnIndex);
		return kpiMapPointers.get(key);
	}

	private String generateKey(int rowIndex, int columnIndex) {
		return rowIndex + "-" + columnIndex;
	}

	/**
	 * Check valid focus id.
	 *
	 * @return the FocusID if it is valid, null otherwise.
	 */
	public String checkValidFocusID() {

		cg_focus_id_correlation.setType(ControlGroupType.NONE);

		// CHECK THE FOCUS ID VALUE
		String focusID = field_list_focus_id_correlation.getSelectedItemText();

		if (focusID == null || focusID.isEmpty()) {

			String msgError = "Could not execute a valid Analysis.";

			showAlert(msgError, AlertType.ERROR, true, uib_vp_correlation_results_container);
			cg_focus_id_correlation.setType(ControlGroupType.ERROR);
			return null;
		}

		return focusID;
	}

	/**
	 * Call scatter.
	 *
	 * @param rowIndex
	 *            the row index
	 * @param columnIndex
	 *            the column index
	 * @param button
	 *            the button
	 */
	private void callScatter(int rowIndex, int columnIndex, HTML button) {

		String focusID = checkValidFocusID();

		if (focusID == null)
			return;

		GWT.log("Called ScatterChart at rowIndex: " + rowIndex + ", columnIndex: " + columnIndex);
		List<KPI> selectedKPI = getKPIForIndexes(rowIndex, columnIndex);
		GWT.log("Selected KPI: " + selectedKPI);
		PerformFishAnalyticsController.eventBus
				.fireEvent(new CallAlgorithmEvent(DataMinerAlgorithms.SCATTER, focusID, selectedKPI, null));
	}

}