package org.leumasjaffe.charsheet.view.skills;

import javax.swing.JPanel;

import lombok.AccessLevel;
import lombok.experimental.FieldDefaults;
import java.awt.GridBagLayout;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

import org.jdesktop.swingx.VerticalLayout;
import org.leumasjaffe.charsheet.model.Ability;
import org.leumasjaffe.charsheet.model.DDCharacter;
import org.leumasjaffe.charsheet.model.DDCharacterClass;
import org.leumasjaffe.charsheet.model.observable.IntValue;
import org.leumasjaffe.charsheet.model.skill.DDSkills;
import org.leumasjaffe.observer.ObservableListener;
import org.leumasjaffe.observer.ObserverDispatch;

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

import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JDialog;
import java.awt.Dimension;

@FieldDefaults(level=AccessLevel.PRIVATE, makeFinal=true)
public class SkillLevelUpDialog extends JPanel {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private ObservableListener<JTextField, IntValue> purchaseListener;
	
	public SkillLevelUpDialog(final DDCharacter chara, final DDCharacterClass cclass) {
		final IntValue pointsAvaliable = new IntValue(Math.max(1, cclass.getSkillPoints() + 
				Ability.modifier(chara.getAbilities().getInt().baseModifier())));
		
		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 = new JPanel();
		GridBagConstraints gbc_panel = new GridBagConstraints();
		gbc_panel.insets = new Insets(0, 0, 5, 0);
		gbc_panel.fill = GridBagConstraints.HORIZONTAL;
		gbc_panel.gridx = 0;
		gbc_panel.gridy = 0;
		add(panel, gbc_panel);
		GridBagLayout gbl_panel = new GridBagLayout();
		gbl_panel.columnWidths = new int[]{0, 0, 0, 0};
		gbl_panel.rowHeights = new int[]{0, 0};
		gbl_panel.columnWeights = new double[]{0.0, 1.0, 0.0, Double.MIN_VALUE};
		gbl_panel.rowWeights = new double[]{0.0, Double.MIN_VALUE};
		panel.setLayout(gbl_panel);
		
		JLabel lblPointsRemaining = new JLabel("Points Remaining:");
		GridBagConstraints gbc_lblPointsRemaining = new GridBagConstraints();
		gbc_lblPointsRemaining.insets = new Insets(0, 0, 0, 5);
		gbc_lblPointsRemaining.anchor = GridBagConstraints.EAST;
		gbc_lblPointsRemaining.gridx = 0;
		gbc_lblPointsRemaining.gridy = 0;
		panel.add(lblPointsRemaining, gbc_lblPointsRemaining);
		
		JTextField pointsRemaining = new JTextField();
		pointsRemaining.setEditable(false);
		GridBagConstraints gbc_pointsRemaining = new GridBagConstraints();
		gbc_pointsRemaining.insets = new Insets(0, 0, 0, 5);
		gbc_pointsRemaining.fill = GridBagConstraints.HORIZONTAL;
		gbc_pointsRemaining.gridx = 1;
		gbc_pointsRemaining.gridy = 0;
		panel.add(pointsRemaining, gbc_pointsRemaining);
		pointsRemaining.setColumns(10);
		
		JScrollPane scrollPane = new JScrollPane();
		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
		gbc_scrollPane.fill = GridBagConstraints.BOTH;
		gbc_scrollPane.gridx = 0;
		gbc_scrollPane.gridy = 1;
		add(scrollPane, gbc_scrollPane);
		
		JPanel skillPanel = new JPanel();
		skillPanel.setMinimumSize(new Dimension(300, 200));
		scrollPane.setViewportView(skillPanel);
		skillPanel.setLayout(new VerticalLayout());
		
		JButton btnSubmitSkillChange = new JButton("Submit Skill Change");
		btnSubmitSkillChange.setEnabled(false);
		GridBagConstraints gbc_btnSubmitSkillChange = new GridBagConstraints();
		gbc_btnSubmitSkillChange.gridx = 2;
		gbc_btnSubmitSkillChange.gridy = 0;
		panel.add(btnSubmitSkillChange, gbc_btnSubmitSkillChange);
		
		final List<SkillLevelUpLine> lines = new ArrayList<>();
		final DDSkills skills = chara.getSkills();
		skills.getSkills().stream().forEach( skill -> {
			SkillLevelUpLine line = new SkillLevelUpLine(chara, cclass, skill, pointsAvaliable);
			skillPanel.add(line);
			lines.add(line);
		});
		
		purchaseListener = new ObservableListener<>(pointsRemaining, (c, v) -> {
			btnSubmitSkillChange.setEnabled(v.value() == 0);
			c.setText(Integer.toString(v.value()));
		});
		purchaseListener.setObserved(pointsAvaliable);
		
		btnSubmitSkillChange.addActionListener(e -> {
			((JDialog) this.getParent().getParent().getParent()).dispose();
			lines.stream().forEach(l -> {
				l.applyChange();
			});
		});
	}
	
	@Override
	public void removeNotify() {
		super.removeNotify();
		ObserverDispatch.unsubscribeAll(purchaseListener);
	}
}