package holeg.ui.view.information;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.util.HashMap;
import java.util.List;
import java.util.Optional;
import java.util.function.Predicate;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.OverlayLayout;
import javax.swing.border.EmptyBorder;

import org.knowm.xchart.PieChart;
import org.knowm.xchart.PieChartBuilder;
import org.knowm.xchart.PieSeries.PieSeriesRenderStyle;
import org.knowm.xchart.XChartPanel;
import org.knowm.xchart.style.PieStyler;
import org.knowm.xchart.style.PieStyler.LabelType;

import holeg.model.Flexibility;
import holeg.model.GroupNode;
import holeg.model.HolonElement;
import holeg.model.HolonObject;
import holeg.model.HolonObject.HolonObjectState;
import holeg.preferences.ColorPreference;
import holeg.ui.controller.Control;
import holeg.utility.math.decimal.Format;
import holeg.ui.model.GuiSettings;

//TODO(Tom2022-01-13): Fix;
public class HolonInformationPanel extends JPanel {
	private static final Logger log = Logger.getLogger(JPanel.class.getName());
	//private Predicate<DecoratedHolonObject> stateFilter = (object) -> true;// = (object) -> object.getState() ==
																			// HolonObjectState.PRODUCER;
	private Predicate<HolonElement> priorityFilter = (ele) -> true;
	private final int defaultWidth = 50;
	private final int defaultHeight = 200;

	private static final Color[] supplyStateColors = new Color[] { ColorPreference.HolonObject.Producer,
			ColorPreference.HolonObject.OverSupplied, ColorPreference.HolonObject.Supplied,
			ColorPreference.HolonObject.PartiallySupplied, ColorPreference.HolonObject.NotSupplied,
			ColorPreference.HolonObject.NoEnergy };
	private static final Color[] productionColors = new Color[] { ColorPreference.Energy.Production,
			ColorPreference.Energy.Consumption };
	private static final Color[] activeColors = new Color[] { ColorPreference.Element.Active,
			ColorPreference.Element.Inactive };
	private static final Color[] flexibilityColors = new Color[] { ColorPreference.Flexibility.Offered,
			ColorPreference.Flexibility.InUse, ColorPreference.Flexibility.OnCooldown,
			ColorPreference.Flexibility.NotOffered, ColorPreference.Flexibility.Unavailable,
			ColorPreference.Element.Priority.NoData };
	private static final Color[] priorityColors = new Color[] { ColorPreference.Element.Priority.Essential,
			ColorPreference.Element.Priority.High, ColorPreference.Element.Priority.Medium,
			ColorPreference.Element.Priority.Low, ColorPreference.Element.Priority.NoData };
	
	private PieChart supplyChart = createSupplyStateChart();
	private PieChart priorityChart = createPriorityChart();
	private PieChart flexibilityChart = createFlexibilityChart();
	private PieChart energyChart = createProductionChart();
	private PieChart activeChart = createActiveChart();

	private XChartPanel<PieChart> panelHolonObject;
	private XChartPanel<PieChart> panelPriority;
	private XChartPanel<PieChart> panelFlexibility;
	private XChartPanel<PieChart> panelEnergy;
	private XChartPanel<PieChart> panelActive;

	private JPanel graphPanel = new JPanel(new GridLayout(0, 2));
	private JPanel titlePanel = new JPanel(new BorderLayout(0, 0));

	private Control control;
	private JLabel differenceEnergyLabelAmount = new JLabel("");

	public HolonInformationPanel(Control control) {
		control.OnSelectionChanged.addListener(() -> updateCharts());
		this.control = control;
		this.setLayout(new BorderLayout());
		initGraphPanel();
		initTitlePanel();
		this.setBackground(ColorPreference.Panel.Background);
		this.add(titlePanel, BorderLayout.PAGE_START);
		this.add(graphPanel, BorderLayout.CENTER);
	}
	
	public void updateCharts() {
		if (GuiSettings.getSelectedObjects().isEmpty()) {
			return;
		}
		Optional<FilterableGroupNode> filteredGroupNode = multiSelectionToFilterableGroupNode();
		if(filteredGroupNode.isEmpty()) {
			return;
		}
		
		FilterableGroupNode decoratedGroupNode = filteredGroupNode.get();
		// UPDATE SUPPLY STATE
//		int producerAmount = decoratedGroupNode.getAmountOfSupplier(stateFilter);
//		int overSuppliedAmount = decoratedGroupNode.getAmountOfConsumerWithState(stateFilter,
//				HolonObjectState.OVER_SUPPLIED);
//		int suppliedAmount = decoratedGroupNode.getAmountOfConsumerWithState(stateFilter, HolonObjectState.SUPPLIED);
//		int partiallySuppliedAmount = decoratedGroupNode.getAmountOfConsumerWithState(stateFilter,
//				HolonObjectState.PARTIALLY_SUPPLIED);
//		int notSuppliedAmount = decoratedGroupNode.getAmountOfConsumerWithState(stateFilter,
//				HolonObjectState.NOT_SUPPLIED);
//		int noEnergyAmount = decoratedGroupNode.getAmountOfPassiv(stateFilter);
//
//		supplyChart.updatePieSeries("Producer", producerAmount);
//		supplyChart.updatePieSeries("Over supplied", overSuppliedAmount);
//		supplyChart.updatePieSeries("Supplied", suppliedAmount);
//		supplyChart.updatePieSeries("Partial supplied", partiallySuppliedAmount);
//		supplyChart.updatePieSeries("Not supplied", notSuppliedAmount);
//		supplyChart.updatePieSeries("No energy", noEnergyAmount);

		// UPDATE PRIORITYS
//		holeg.ui.view.information.FilterableGroupNode.PriorityCounts priorityCounts = decoratedGroupNode
//				.getPriorityCounts(stateFilter);
//
//		priorityChart.updatePieSeries("Essential", priorityCounts.essential);
//		priorityChart.updatePieSeries("High", priorityCounts.high);
//		priorityChart.updatePieSeries("Medium", priorityCounts.medium);
//		priorityChart.updatePieSeries("Low", priorityCounts.low);
//		boolean hasPriority = priorityCounts.essential + priorityCounts.high + priorityCounts.medium
//				+ priorityCounts.low > 0;
//		priorityChart.updatePieSeries("No Data", hasPriority ? 0 : 1);
//		updateToolTips(panelPriority);

		// UPDATE PRODUCTION
//		float production = decoratedGroupNode.getProduction(stateFilter, priorityFilter);
//		float consumption = decoratedGroupNode.getConsumption(stateFilter, priorityFilter);
//		log.info("production" + production + " consumption" + consumption);
//		float difference = Math.abs(production - consumption);
//		energyChart.updatePieSeries("Production", production);
//		energyChart.updatePieSeries("Consumption", consumption);
//		differenceEnergyLabelAmount.setText(Format.doubleFixedPlaces(1, difference));
//
//		// UPDATE FLEXIBILITIES
//		int inUse = 0;
//		int offered = 0;
//		int onCooldown = 0;
//		int notOffered = 0;
//		int unavailable = 0;
//
//		Stream<Flexibility> flexWrapperStream = decoratedGroupNode.getFlexibilitiesStream(stateFilter, priorityFilter);
//		List<Flexibility> flexList = flexWrapperStream.collect(Collectors.toList());
//		for (Flexibility flex : flexList) {
//			switch (flex.getState()) {
//			case IN_USE:
//				inUse++;
//				break;
//			case NOT_OFFERED:
//				notOffered++;
//				break;
//			case OFFERED:
//				offered++;
//				break;
//			case ON_COOLDOWN:
//				onCooldown++;
//				break;
//			case UNAVAILABLE:
//				unavailable++;
//				break;
//			default:
//				break;
//
//			}
//		}
//		flexibilityChart.updatePieSeries("Offered", offered);
//		flexibilityChart.updatePieSeries("In use", inUse);
//		flexibilityChart.updatePieSeries("On cooldown", onCooldown);
//		flexibilityChart.updatePieSeries("Not offered", notOffered);
//		flexibilityChart.updatePieSeries("Unavailable", unavailable);
//		boolean hasFlex = offered + inUse + onCooldown + notOffered + unavailable > 0;
//		flexibilityChart.updatePieSeries("No Data", hasFlex ? 0 : 1);
//		// UPDATE ActiveInActive
//		int activeAmount = decoratedGroupNode.getAmountOfAktiveElementsFromHolonObjects(stateFilter, priorityFilter);
//		int inactiveAmounts = decoratedGroupNode.getAmountOfElementsFromHolonObjects(stateFilter, priorityFilter)
//				- activeAmount;
//		activeChart.updatePieSeries("Active", activeAmount);
//		activeChart.updatePieSeries("Inactive", inactiveAmounts);

		this.revalidate();
		this.repaint();
	}


	private Optional<FilterableGroupNode> multiSelectionToFilterableGroupNode() {
//		FilterableGroupNode temp = new FilterableGroupNode(new GroupNode("Temp"),
//				control.getModel().getCurrentIteration());

//		Optional<VisualRepresentationalState> visState = control.getSimManager().getActualVisualRepresentationalState();
//		if(visState.isEmpty()) {
//			return Optional.empty();
//		}
//		
//		// GroupNodes
//		HashMap<GroupNode, DecoratedGroupNode> accessMapGroupNode = visState.get().getCreatedGroupNodes();
//		List<FilterableGroupNode> groupNodeList = GuiSettings.getSelectedObjects().stream()
//				.filter(object -> object instanceof GroupNode).map(object -> accessMapGroupNode.get(object))
//				.map(node -> new FilterableGroupNode(node, control.getModel().getCurrentIteration()))
//				.collect(Collectors.toList());
//
//		temp.getGroupNodeList().addAll(groupNodeList);
//
//		// HolonObjects
//		HashMap<HolonObject, DecoratedHolonObject> accessMapHolonObject = visState.get().createdHolonObjects;
//		List<DecoratedHolonObject> holonObjectList = GuiSettings.getSelectedObjects().stream()
//				.filter(object -> object instanceof HolonObject).map(object -> accessMapHolonObject.get(object))
//				.collect(Collectors.toList());
//
//		for (DecoratedHolonObject object : holonObjectList) {
//			switch (object.getState()) {
//			case NO_ENERGY:
//				temp.getPassivList().add((Passiv) object);
//				break;
//			case PRODUCER:
//				temp.getSupplierList().add((Supplier) object);
//				break;
//			default:
//				temp.getConsumerList().add((Consumer) object);
//				break;
//			}
//		}
//		return Optional.of(temp);
		return Optional.empty();
	}


	public void initGraphPanel() {
		graphPanel.setBackground(ColorPreference.Panel.Background);
		panelHolonObject = new XChartPanel<PieChart>(supplyChart);
		panelHolonObject.setBackground(ColorPreference.Panel.Background);
		graphPanel.add(panelHolonObject);
		panelPriority = new XChartPanel<PieChart>(priorityChart);
		panelPriority.setBackground(ColorPreference.Panel.Background);
		graphPanel.add(panelPriority);
		panelFlexibility = new XChartPanel<PieChart>(flexibilityChart);
		panelFlexibility.setBackground(ColorPreference.Panel.Background);
		graphPanel.add(panelFlexibility);
		Component panel = initEnergyChart();
		graphPanel.add(panel);
		panelActive = new XChartPanel<PieChart>(activeChart);
		panelActive.setBackground(ColorPreference.Panel.Background);
		panelActive.setLayout(new GridBagLayout());
		graphPanel.add(panelActive);
		graphPanel.setBorder(BorderFactory.createLineBorder(Color.lightGray));
	}

	private JLayeredPane initEnergyChart() {
		JLayeredPane panel = new JLayeredPane();
		JPanel panelMiddle = new JPanel(new GridBagLayout());
		panelEnergy = new XChartPanel<PieChart>(energyChart);
		panelEnergy.setBackground(ColorPreference.Panel.Background);
		GridBagConstraints c = new GridBagConstraints();
		c.gridx = 0;
		c.gridy = 0;
		c.insets = new Insets(15, 0, 0, 0); // top padding
		JLabel difference = new JLabel("Difference:");
		difference.setHorizontalAlignment(JLabel.CENTER);
		difference.setAlignmentX(Component.CENTER_ALIGNMENT);
		difference.setForeground(ColorPreference.Panel.Title);
		difference.setFont(new java.awt.Font("Arial", java.awt.Font.BOLD, 10));
		panelMiddle.add(difference, c);

		differenceEnergyLabelAmount.setHorizontalAlignment(JLabel.CENTER);
		differenceEnergyLabelAmount.setForeground(Color.red);
		differenceEnergyLabelAmount.setAlignmentX(Component.CENTER_ALIGNMENT);
		differenceEnergyLabelAmount.setFont(new java.awt.Font("Arial", java.awt.Font.BOLD, 12));
		c.insets = new Insets(0, 0, 0, 0);
		c.gridy = 1;
		panelMiddle.add(differenceEnergyLabelAmount, c);
		panel.setLayout(new OverlayLayout(panel));
		panelEnergy.setOpaque(false);
		panelMiddle.setOpaque(false);
		panel.add(panelMiddle, Integer.valueOf(0));
		panel.add(panelEnergy, Integer.valueOf(1));
		return panel;
	}

	public void initTitlePanel() {
		titlePanel.setBackground(ColorPreference.Panel.Background);
		titlePanel.setBorder(new EmptyBorder(5, 5, 2, 0));
	}

	public void setDefaultPieChartSettings(PieChart chart) {
		PieStyler styler = chart.getStyler();
		styler.setChartTitleVisible(true);
		styler.setDefaultSeriesRenderStyle(PieSeriesRenderStyle.Donut);
		styler.setLabelsFont(new java.awt.Font("Arial", java.awt.Font.PLAIN, 14));
		styler.setLabelType(LabelType.Percentage);
		styler.setLabelsFontColor(Color.black);
		styler.setLabelsFontColorAutomaticEnabled(false);
		styler.setLabelsDistance(0.8);
		styler.setChartFontColor(ColorPreference.Panel.Title);
		styler.setToolTipsEnabled(true);
		styler.setPlotContentSize(0.9);
		styler.setPlotBackgroundColor(ColorPreference.Panel.Transparent);
		styler.setPlotBorderColor(ColorPreference.Panel.Transparent);
		styler.setLegendVisible(false);
		styler.setChartBackgroundColor(ColorPreference.Panel.Transparent);
	}

	public PieChart createSupplyStateChart() {
		PieChart chart = new PieChartBuilder().width(defaultWidth).height(defaultHeight).title("Holon Objects").build();
		setDefaultPieChartSettings(chart);

		chart.getStyler().setSeriesColors(supplyStateColors);

		// Series
		chart.addSeries("Producer", 0);
		chart.addSeries("Over supplied", 0);
		chart.addSeries("Supplied", 0);
		chart.addSeries("Partial supplied", 0);
		chart.addSeries("Not supplied", 0);
		chart.addSeries("No energy", 0);
		return chart;
	}

	public PieChart createPriorityChart() {
		PieChart chart = new PieChartBuilder().width(defaultWidth).height(defaultHeight).title("Priotities").build();
		setDefaultPieChartSettings(chart);
		// Customize Chart

		chart.getStyler().setSeriesColors(priorityColors);
		// Series
		chart.addSeries("Essential", 0);
		chart.addSeries("High", 0);
		chart.addSeries("Medium", 0);
		chart.addSeries("Low", 0);
		chart.addSeries("No Data", 0);
		return chart;
	}

	public PieChart createFlexibilityChart() {
		PieChart chart = new PieChartBuilder().width(defaultWidth).height(defaultHeight).title("Flexibilities").build();
		setDefaultPieChartSettings(chart);
		// Customize Chart

		chart.getStyler().setSeriesColors(flexibilityColors);
		// Series
		chart.addSeries("Offered", 0);
		chart.addSeries("In use", 0);
		chart.addSeries("On cooldown", 0);
		chart.addSeries("Not offered", 0);
		chart.addSeries("Unavailable", 0);
		chart.addSeries("No Data", 0);
		return chart;
	}

	public PieChart createProductionChart() {
		PieChart chart = new PieChartBuilder().width(defaultWidth).height(defaultHeight)
				.title("Production vs. Consumption").build();
		setDefaultPieChartSettings(chart);

		// Customize Chart
		// Customize Chart

		chart.getStyler().setSeriesColors(productionColors);
		// Series
		chart.addSeries("Production", 0);
		chart.addSeries("Consumption", 0);
		return chart;
	}

	public PieChart createActiveChart() {
		PieChart chart = new PieChartBuilder().width(defaultWidth).height(defaultHeight).title("Active").build();
		setDefaultPieChartSettings(chart);
		// Customize Chart
		// Customize Chart

		chart.getStyler().setSeriesColors(activeColors);
		// Series
		chart.addSeries("Active", 0);
		chart.addSeries("Inactive", 0);
		return chart;
	}
}