package org.leumasjaffe.charsheet.view.magic;

import javax.swing.JPanel;

import org.jdesktop.swingx.VerticalLayout;
import org.leumasjaffe.charsheet.model.DDCharacter;
import org.leumasjaffe.charsheet.model.DDCharacterClass;
import org.leumasjaffe.charsheet.model.magic.impl.Prepared;
import org.leumasjaffe.charsheet.model.observable.BoolGate;
import org.leumasjaffe.observer.ObservableListener;
import org.leumasjaffe.observer.ObserverDispatch;

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

import java.awt.GridBagLayout;
import javax.swing.JScrollPane;

import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.ScrollPaneConstants;

@SuppressWarnings("serial")
@FieldDefaults(level=AccessLevel.PRIVATE, makeFinal=true)
public class PrepareSpellsDialog extends JPanel {	
	int[] ready = {0};
	int highestSpellLevel;
	ObservableListener<Consumer<Boolean>, BoolGate> allReady;

	public PrepareSpellsDialog(DDCharacter chara, DDCharacterClass dclass) {
		highestSpellLevel = dclass.getHighestSpellLevel();
		ready[0] = highestSpellLevel;
		
		GridBagLayout gridBagLayout = new GridBagLayout();
		gridBagLayout.columnWidths = new int[]{0, 0};
		gridBagLayout.rowHeights = new int[]{0, 0, 0};
		gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
		gridBagLayout.rowWeights = new double[]{0.0, 1.0, Double.MIN_VALUE};
		setLayout(gridBagLayout);
		
		JPanel panel_1 = new JPanel();
		GridBagConstraints gbc_panel_1 = new GridBagConstraints();
		gbc_panel_1.insets = new Insets(0, 0, 5, 0);
		gbc_panel_1.fill = GridBagConstraints.BOTH;
		gbc_panel_1.gridx = 0;
		gbc_panel_1.gridy = 0;
		add(panel_1, gbc_panel_1);
		GridBagLayout gbl_panel_1 = new GridBagLayout();
		gbl_panel_1.columnWidths = new int[]{0, 0};
		gbl_panel_1.rowHeights = new int[]{0, 0};
		gbl_panel_1.columnWeights = new double[]{0.0, Double.MIN_VALUE};
		gbl_panel_1.rowWeights = new double[]{0.0, Double.MIN_VALUE};
		panel_1.setLayout(gbl_panel_1);
		
		JButton btnPrepareTheseSpells = new JButton("Prepare These Spells");
		GridBagConstraints gbc_btnPrepareTheseSpells = new GridBagConstraints();
		gbc_btnPrepareTheseSpells.gridx = 0;
		gbc_btnPrepareTheseSpells.gridy = 0;
		panel_1.add(btnPrepareTheseSpells, gbc_btnPrepareTheseSpells);
		
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
		gbc_scrollPane.fill = GridBagConstraints.BOTH;
		gbc_scrollPane.gridx = 0;
		gbc_scrollPane.gridy = 1;
		add(scrollPane, gbc_scrollPane);
		
		JPanel panel = new JPanel(new VerticalLayout(5));
		scrollPane.setViewportView(panel);
		
		List<SelectPreparedSpellsPanel> panels = new ArrayList<>();
		final BoolGate gate = new BoolGate(highestSpellLevel);
		allReady = gate.makeListener(btnPrepareTheseSpells::setEnabled);
		for (int i = 0; i < highestSpellLevel; ++i) {
			SelectPreparedSpellsPanel lvl = new SelectPreparedSpellsPanel(chara, dclass, gate.handle(i), i);
			panels.add(lvl);
			panel.add(lvl);
		}
		
		final Prepared spellBook = (Prepared) dclass.getSpellBook().get();
		btnPrepareTheseSpells.addActionListener(e -> {
			for (int i = 0; i < highestSpellLevel; ++i) {
				spellBook.prepareSpells(i, panels.get(i).getPrepared());
			}
			((JDialog) this.getParent().getParent().getParent()).dispose();
		});
	}

	@Override
	public void removeNotify() {
		super.removeNotify();
		ObserverDispatch.unsubscribeAll(allReady);
	}
}