#include "../config/pathan_config.h"
/*
 * Copyright (c) 2001, DecisionSoft Limited All rights reserved.
 * Please see LICENSE.TXT for more information.
 */

#include <pathan/functions/FunctionCurrentTime.hpp>
#include <pathan/DynamicContext.hpp>
#include <pathan/ATTimeOrDerived.hpp>
#include <pathan/internal/factory/DatatypeFactory.hpp>
#include <pathan/dataItem/StaticResolutionContext.hpp>
#include <time.h>
#include <stdio.h> // for sprintf

const XMLCh FunctionCurrentTime::name[] = {
XERCES_CPP_NAMESPACE_QUALIFIER chLatin_c, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_u, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_r, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_n, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_t, XERCES_CPP_NAMESPACE_QUALIFIER chDash, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_t, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_i, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_m, XERCES_CPP_NAMESPACE_QUALIFIER chLatin_e, XERCES_CPP_NAMESPACE_QUALIFIER chNull };

/**
 * fn:current-time() as xs:time
**/

FunctionCurrentTime::FunctionCurrentTime(const VectorOfDataItems &args, XPath2MemoryManager* memMgr)
  : DataItemFunction(name,0, 0, "empty()", args, memMgr)
{
}

DataItem* FunctionCurrentTime::staticResolution(StaticContext *context, StaticResolutionContext *src) {
  src->currentTimeUsed(true);
  return resolveDataItems(_args, context, src, false);
}

Sequence FunctionCurrentTime::collapseTreeInternal(DynamicContext* context, int flags) const
{
  time_t curDate=context->getCurrentTime();
  struct tm* curLocalDate=localtime(&curDate);
  char szDate[128];
  sprintf(szDate,"%02d:%02d:%02dZ",curLocalDate->tm_hour, curLocalDate->tm_min, curLocalDate->tm_sec);

  const ATTimeOrDerived* time = DatatypeFactory::STR2AT::createTime(context->getMemoryManager(), context->getMemoryManager()->getPooledString(szDate), context);
	// no need to add timezone, it's already compensated for in localtime
	// time.setTimezone(Timezone(XSDecimal(DateUtils::getImplicitTimezone(), memMgr)));
  return Sequence(time, context->getMemoryManager());
}