/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <log4cxx/logstring.h>
#include <log4cxx/helpers/datelayout.h>
#include <log4cxx/helpers/stringhelper.h>
#include <log4cxx/spi/loggingevent.h>
#include <log4cxx/helpers/dateformat.h>
#include <log4cxx/helpers/relativetimedateformat.h>
#include <log4cxx/helpers/absolutetimedateformat.h>
#include <log4cxx/helpers/datetimedateformat.h>
#include <log4cxx/helpers/iso8601dateformat.h>
#include <log4cxx/helpers/timezone.h>

using namespace log4cxx;
using namespace log4cxx::helpers;
using namespace log4cxx::spi;

DateLayout::DateLayout(const LogString& dateFormatOption1) :
	timeZoneID(), dateFormatOption(dateFormatOption1), dateFormat(0)
{
}

DateLayout::~DateLayout()
{
}


void DateLayout::setOption(const LogString& option, const LogString& value)
{

	if (StringHelper::equalsIgnoreCase(option,
			LOG4CXX_STR("DATEFORMAT"), LOG4CXX_STR("dateformat")))
	{
		dateFormatOption = value;
	}
	else if (StringHelper::equalsIgnoreCase(option,
			LOG4CXX_STR("TIMEZONE"), LOG4CXX_STR("timezone")))
	{
		timeZoneID = value;
	}
}

void DateLayout::activateOptions(Pool&)
{
	if (!dateFormatOption.empty())
	{

		if (dateFormatOption.empty())
		{
			dateFormat = 0;
		}
		else if (StringHelper::equalsIgnoreCase(dateFormatOption,
				LOG4CXX_STR("NULL"), LOG4CXX_STR("null")))
		{
			dateFormat = 0;
			dateFormatOption = LOG4CXX_STR("NULL");
		}
		else if (StringHelper::equalsIgnoreCase(dateFormatOption,
				LOG4CXX_STR("RELATIVE"), LOG4CXX_STR("relative")))
		{
			dateFormat =  new RelativeTimeDateFormat();
			dateFormatOption = LOG4CXX_STR("RELATIVE");
		}
		else if (StringHelper::equalsIgnoreCase(dateFormatOption,
				LOG4CXX_STR("ABSOLUTE"),  LOG4CXX_STR("absolute")))
		{
			dateFormat =  new AbsoluteTimeDateFormat();
			dateFormatOption = LOG4CXX_STR("ABSOLUTE");
		}
		else if (StringHelper::equalsIgnoreCase(dateFormatOption,
				LOG4CXX_STR("DATE"), LOG4CXX_STR("date")))
		{
			dateFormat =  new DateTimeDateFormat();
			dateFormatOption = LOG4CXX_STR("DATE");
		}
		else if (StringHelper::equalsIgnoreCase(dateFormatOption,
				LOG4CXX_STR("ISO8601"), LOG4CXX_STR("iso8601")))
		{
			dateFormat =  new ISO8601DateFormat();
			dateFormatOption = LOG4CXX_STR("iso8601");
		}
		else
		{
			dateFormat = new SimpleDateFormat(dateFormatOption);
		}
	}

	if (dateFormat != NULL)
	{
		if (timeZoneID.empty())
		{
			dateFormat->setTimeZone(TimeZone::getDefault());
		}
		else
		{
			dateFormat->setTimeZone(TimeZone::getTimeZone(timeZoneID));
		}
	}
}


void DateLayout::formatDate(LogString& s,
	const spi::LoggingEventPtr& event,
	Pool& p) const
{

	if (dateFormat != 0)
	{
		dateFormat->format(s, event->getTimeStamp(), p);
		s.append(1, (logchar) 0x20 /* ' ' */);
	}
}