/*
 * Copyright (c) 2022, ctecinf.com.br
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package br.com.ctecinf.text;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import javax.swing.JFormattedTextField;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.DocumentFilter;

/**
 *
 * @author Cássio Conceição
 * @since 01/11/2019
 * @version 2203
 * @see http://ctecinf.com.br/
 */
public class DateFormatter extends JFormattedTextField.AbstractFormatter {

    private int length = 8;
    private String mask = "##/##/####";
    private static final DateFormat DTF = new SimpleDateFormat("dd/MM/yyyy");

    private final DocumentFilter df = new DocumentFilter() {
        @Override
        public void replace(DocumentFilter.FilterBypass fb, int offset, int length, String text, AttributeSet attrs) throws BadLocationException {

            if (offset == mask.length() - 1) {
                getFormattedTextField().transferFocus();
            }

            if (offset >= mask.length()) {
                return;
            }

            if (!Character.isDigit(text.charAt(length))) {
                return;
            }

            if (mask.charAt(offset) != '#') {
                text = String.valueOf(mask.charAt(offset)) + text;
            }

            super.replace(fb, offset, length, text, attrs);
        }
    };

    @Override
    public Object stringToValue(String text) throws ParseException {

        if (text.isEmpty() || text.length() < mask.length()) {
            getFormattedTextField().setValue(null);
            return null;
        }

        return new java.sql.Date(DTF.parse(text).getTime());
    }

    @Override
    public String valueToString(Object value) throws ParseException {

        if (value instanceof String && value.toString().length() == length) {

            String str = "";
            int index = 0;

            for (char c : mask.toCharArray()) {

                if (c == '#') {
                    str += value.toString().charAt(index);
                    index++;
                } else {
                    str += c;
                }
            }

            return str;
        }

        return value == null ? "" : DTF.format(value);
    }

    @Override
    protected DocumentFilter getDocumentFilter() {
        return df;
    }

    public static DateFormat format() {
        return DTF;
    }
}