package org.leumasjaffe.recipe.view;

import javax.swing.JPanel;
import java.awt.GridBagLayout;
import javax.swing.JTextField;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.text.NumberFormat;
import java.util.Locale;

import javax.swing.event.DocumentListener;
import javax.swing.text.NumberFormatter;

import org.leumasjaffe.observer.ObservableController;
import org.leumasjaffe.observer.ObserverDispatch;
import org.leumasjaffe.recipe.model.Ingredient;

import javax.swing.JFormattedTextField;
import java.awt.Font;
import javax.swing.JLabel;

@SuppressWarnings("serial")
public class IngredientPanel extends JPanel implements AutoGrowPanel.DocumentListenable {
	ObservableController<JTextField, Ingredient> controller;
	private JTextField txtName;
		
	public IngredientPanel(final Ingredient ingredient) {
		GridBagLayout gridBagLayout = new GridBagLayout();
		gridBagLayout.columnWidths = new int[]{0, 0, 0, 0, 0, 0};
		gridBagLayout.rowHeights = new int[]{0, 0};
		gridBagLayout.columnWeights = new double[]{0.0, 1.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
		gridBagLayout.rowWeights = new double[]{0.0, Double.MIN_VALUE};
		setLayout(gridBagLayout);
		
		JLabel label = new JLabel("\u2022");
		GridBagConstraints gbc_label = new GridBagConstraints();
		gbc_label.insets = new Insets(0, 0, 0, 5);
		gbc_label.anchor = GridBagConstraints.EAST;
		gbc_label.gridx = 0;
		gbc_label.gridy = 0;
		add(label, gbc_label);
		
		txtName = new JTextField(ingredient.getName());
		txtName.setFont(new Font("Source Code Pro", Font.PLAIN, 10));
		GridBagConstraints gbc_txtName = new GridBagConstraints();
		gbc_txtName.fill = GridBagConstraints.HORIZONTAL;
		gbc_txtName.insets = new Insets(0, 0, 0, 5);
		gbc_txtName.gridx = 1;
		gbc_txtName.gridy = 0;
		add(txtName, gbc_txtName);
		txtName.setColumns(10);
		
		NumberFormatter fmtDone = new NumberFormatter(NumberFormat.getNumberInstance(Locale.getDefault()));
		fmtDone.setMinimum(0.0);
		fmtDone.setCommitsOnValidEdit(true);
		JFormattedTextField txtAmount = new JFormattedTextField(fmtDone);
		txtAmount.setValue(ingredient.getAmount().getValue());
		txtAmount.setFont(new Font("Source Code Pro", Font.PLAIN, 10));
		GridBagConstraints gbc_txtAmount = new GridBagConstraints();
		gbc_txtAmount.fill = GridBagConstraints.HORIZONTAL;
		gbc_txtAmount.insets = new Insets(0, 0, 0, 5);
		gbc_txtAmount.gridx = 2;
		gbc_txtAmount.gridy = 0;
		add(txtAmount, gbc_txtAmount);
		txtAmount.setColumns(4);
		
		JTextField txtUnit = new JTextField(ingredient.getAmount().unitName());
		txtUnit.setFont(new Font("Source Code Pro", Font.PLAIN, 10));
		GridBagConstraints gbc_txtUnit = new GridBagConstraints();
		gbc_txtUnit.insets = new Insets(0, 0, 0, 5);
		gbc_txtUnit.anchor = GridBagConstraints.ABOVE_BASELINE;
		gbc_txtUnit.fill = GridBagConstraints.HORIZONTAL;
		gbc_txtUnit.gridx = 3;
		gbc_txtUnit.gridy = 0;
		add(txtUnit, gbc_txtUnit);
		txtUnit.setColumns(6);
		
		JTextField txtPreparation = new JTextField(ingredient.getPreparation());
		txtPreparation.setFont(new Font("Source Code Pro", Font.PLAIN, 10));
		GridBagConstraints gbc_txtPreparation = new GridBagConstraints();
		gbc_txtPreparation.anchor = GridBagConstraints.ABOVE_BASELINE;
		gbc_txtPreparation.fill = GridBagConstraints.HORIZONTAL;
		gbc_txtPreparation.gridx = 4;
		gbc_txtPreparation.gridy = 0;
		add(txtPreparation, gbc_txtPreparation);
		txtPreparation.setColumns(10);
		
		// I technically don't need to listen here as of this change,
		// but if I ever restore support for it, it will be convenient.
		controller = new ObservableController<>(txtName,
				Ingredient::getName, Ingredient::setName,
				JTextField::setText);
		controller.setObserved(ingredient);
	}

	@Override
	public void addDocumentListener(DocumentListener dl) {
		this.txtName.getDocument().addDocumentListener(dl);
	}

	@Override
	public void removeDocumentListener(DocumentListener dl) {
		this.txtName.getDocument().removeDocumentListener(dl);
	}
	
	@Override
	public void removeNotify() {
		super.removeNotify();
		ObserverDispatch.unsubscribeAll(controller);
	}

}