/*
 * Copyright (C) 2008-2020, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.util;

/**
 * Created by aalexeev on 12/7/16.
 */
public class DateFormattersHolder {

    private DateFormattersHolder() {
        throw new IllegalStateException();
    }

    private static volatile DateFormatter messageFormatter;

    public static DateFormatter getMessageFormatterInstance() {
        DateFormatter localInstance = messageFormatter;

        if (localInstance == null) {
            synchronized (DateFormatter.class) {
                localInstance = messageFormatter;

                if (localInstance == null)
                    messageFormatter = localInstance = new DateFormatter("yyyy-MM-dd HH:mm:ss");
            }
        }
        return localInstance;
    }

    private static volatile DateFormatter rssFormatter;

    public static DateFormatter getRssFormatterInstance() {
        DateFormatter localInstance = rssFormatter;

        if (localInstance == null) {
            synchronized (DateFormatter.class) {
                localInstance = rssFormatter;

                if (localInstance == null)
                    rssFormatter = localInstance = new DateFormatter("EEE, d MMM yyyy HH:mm:ss");
            }
        }
        return localInstance;
    }

    private static volatile DateFormatter httpDateFormatter;

    public static DateFormatter getHttpDateFormatter() {
        DateFormatter localInstance = httpDateFormatter;
        if (localInstance == null) {
            synchronized (DateFormatter.class) {
                localInstance = httpDateFormatter;
                if (localInstance == null) {
                    httpDateFormatter = localInstance = new DateFormatter("EEE, dd MMM yyyy HH:mm:ss O");
                }
            }
        }
        return localInstance;
    }
}