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// 
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// 
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// 
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// 
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
// 
package org.eclipse.jetty.http;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 *  ThreadLocal data parsers for HTTP style dates
 *
 * @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
 */
@Deprecated(since = "2021-05-27")
public class DateParser {

    private static final TimeZone __GMT = TimeZone.getTimeZone("GMT");

    static {
        __GMT.setID("GMT");
    }

    static final String[] __dateReceiveFmt = { "EEE, dd MMM yyyy HH:mm:ss zzz", "EEE, dd-MMM-yy HH:mm:ss", "EEE MMM dd HH:mm:ss yyyy", "EEE, dd MMM yyyy HH:mm:ss", "EEE dd MMM yyyy HH:mm:ss zzz", "EEE dd MMM yyyy HH:mm:ss", "EEE MMM dd yyyy HH:mm:ss zzz", "EEE MMM dd yyyy HH:mm:ss", "EEE MMM-dd-yyyy HH:mm:ss zzz", "EEE MMM-dd-yyyy HH:mm:ss", "dd MMM yyyy HH:mm:ss zzz", "dd MMM yyyy HH:mm:ss", "dd-MMM-yy HH:mm:ss zzz", "dd-MMM-yy HH:mm:ss", "MMM dd HH:mm:ss yyyy zzz", "MMM dd HH:mm:ss yyyy", "EEE MMM dd HH:mm:ss yyyy zzz", "EEE, MMM dd HH:mm:ss yyyy zzz", "EEE, MMM dd HH:mm:ss yyyy", "EEE, dd-MMM-yy HH:mm:ss zzz", "EEE dd-MMM-yy HH:mm:ss zzz", "EEE dd-MMM-yy HH:mm:ss" };

    public static long parseDate(String date) {
        return __dateParser.get().parse(date);
    }

    private static final ThreadLocal __dateParser = new ThreadLocal() {

        @Override
        protected DateParser initialValue() {
            return new DateParser();
        }
    };

    final SimpleDateFormat[] _dateReceive = new SimpleDateFormat[__dateReceiveFmt.length];

    private long parse(final String dateVal) {
        for (int i = 0; i < _dateReceive.length; i++) {
            if (_dateReceive[i] == null) {
                _dateReceive[i] = new SimpleDateFormat(__dateReceiveFmt[i], Locale.US);
                _dateReceive[i].setTimeZone(__GMT);
            }
            try {
                Date date = (Date) _dateReceive[i].parseObject(dateVal);
                return date.getTime();
            } catch (java.lang.Exception e) {
                // LOG.ignore(e);
            }
        }
        if (dateVal.endsWith(" GMT")) {
            final String val = dateVal.substring(0, dateVal.length() - 4);
            for (SimpleDateFormat element : _dateReceive) {
                try {
                    Date date = (Date) element.parseObject(val);
                    return date.getTime();
                } catch (java.lang.Exception e) {
                    // LOG.ignore(e);
                }
            }
        }
        return -1;
    }
}