package org.leumasjaffe.recipe.view;

import java.util.ArrayList;
import java.util.List;

import javax.swing.JPanel;

import org.leumasjaffe.observer.ForwardingObservableListener;
import org.leumasjaffe.observer.Observable;
import org.leumasjaffe.observer.ObserverDispatch;
import org.leumasjaffe.recipe.model.Phase;
import org.leumasjaffe.recipe.model.Step;
import org.leumasjaffe.recipe.viewmodel.ScaleFactor;

import lombok.AccessLevel;
import lombok.Getter;
import lombok.experimental.FieldDefaults;

import org.jdesktop.swingx.VerticalLayout;

@SuppressWarnings("serial")
@FieldDefaults(level=AccessLevel.PRIVATE, makeFinal=true)
public class PhasePanel extends JPanel {
	ForwardingObservableListener<Phase> listener = new ForwardingObservableListener<>();

	PreparationPanel panelPrep;
	RestPanel panelRest;
	@Getter(AccessLevel.PACKAGE) AutoGrowPanel<StepPanel, Step> panelSteps;
	
	// TODO Re-configure to support this(); setModel(phase); pattern.
	public PhasePanel(final Phase phase, final ScaleFactor scale) {		
		setLayout(new VerticalLayout(5));
		
		panelPrep = new PreparationPanel(phase, scale);
		add(panelPrep);
		
		panelSteps = new AutoGrowPanel<>(Step::new, s -> new StepPanel(s, scale));
		panelSteps.setGap(5);
		add(panelSteps);
		
		panelRest = new RestPanel(phase.getRest());
		add(panelRest);

		panelSteps.setModel(phase.getCooking(), added -> {
			listener.setObserved(phase, allChildren(phase));
			if (!added) {
				ObserverDispatch.notifySubscribers(phase);
			}
		});
		listener.setObserved(phase, allChildren(phase));
	}
	
	private static List<Observable> allChildren(Phase phase) {
		List<Observable> children = new ArrayList<>(phase.getCooking());
		children.add(phase.getPreparation());
		children.add(phase.getRest());
		return children;
	}
	
	@Override
	public void setEnabled(boolean enabled) {
		super.setEnabled(enabled);
		panelPrep.setEnabled(enabled);
		panelSteps.setEnabled(enabled);
		panelRest.setEnabled(enabled);
	}
	
	@Override
	public void removeNotify() {
		super.removeNotify();
		ObserverDispatch.unsubscribeAll(listener);
	}

}