//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAPI/AlgorithmHistory.h"
#include "MantidAPI/Algorithm.h"

namespace Mantid
{
namespace API
{

using Kernel::Property;

/** Constructor
 *  @param alg      A pointer to the algorithm for which the history should be constructed
 *  @param start    The start time of the algorithm execution (optional)
 *  @param duration The time (in seconds) that it took to run this algorithm (optional)
 */
AlgorithmHistory::AlgorithmHistory(const Algorithm* const alg, const dateAndTime& start, const double& duration,unsigned int uexeccount) :
  m_name(alg->name()), m_version(alg->version()), m_executionDate(start), m_executionDuration(duration),m_execCount(uexeccount)
{
  // Now go through the algorithm's properties and create the PropertyHistory objects.
  const std::vector<Property*>& properties = alg->getProperties();
  std::vector<Property*>::const_iterator it;
  for (it = properties.begin(); it != properties.end(); ++it)
  {
    m_properties.push_back( (*it)->createHistory() );
  }
}

/// Destructor
AlgorithmHistory::~AlgorithmHistory()
{}

/*!
    Standard Copy Constructor
    \param A :: AlgorithmHistory Item to copy
 */
AlgorithmHistory::AlgorithmHistory(const AlgorithmHistory& A) :
  m_name(A.m_name),m_version(A.m_version),m_executionDate(A.m_executionDate),
  m_executionDuration(A.m_executionDuration),m_properties(A.m_properties),m_execCount(A.m_execCount)
{
}

/** Add details of an algorithm's execution to an existing history object
 *  @param start    The start time of the algorithm execution
 *  @param duration The time (in seconds) that it took to run this algorithm
 */
void AlgorithmHistory::addExecutionInfo(const dateAndTime& start, const double& duration)
{
  m_executionDate = start;
  m_executionDuration = duration;
}

/** Prints a text representation of itself
 *  @param os The ouput stream to write to
 *  @param indent an indentation value to make pretty printing of object and sub-objects
 */
void AlgorithmHistory::printSelf(std::ostream& os, const int indent)const
{
  os << std::string(indent,' ') << "Algorithm: " << m_name;
  os << std::string(indent,' ') << " v" << m_version << std::endl;
  if (m_executionDate)
  {
    char buffer [25];
    strftime (buffer,25,"%Y-%b-%d %H:%M:%S",localtime(&m_executionDate));
    os << std::string(indent,' ') << "Execution Date: " << buffer<<std::endl;
    os << std::string(indent,' ') << "Execution Duration: "<< m_executionDuration << " seconds" << std::endl;
  }
  std::vector<Kernel::PropertyHistory>::const_iterator it;
  os << std::string(indent,' ') << "Parameters:" <<std::endl;

  for (it=m_properties.begin();it!=m_properties.end();it++)
  {
    it->printSelf( os, indent+2 );
  }
}

/*!
    Standard Assignment operator
    \param A :: AlgorithmHistory Item to assign to 'this'
 */
AlgorithmHistory& AlgorithmHistory::operator=(const AlgorithmHistory& A)
{
  if (this!=&A)
  {
    m_name=A.m_name;
    m_version=A.m_version;
    m_executionDate=A.m_executionDate;
    m_executionDuration=A.m_executionDuration;
    m_properties=A.m_properties;
  }
  return *this;
}

/** Prints a text representation
 * @param os The ouput stream to write to
 * @param AH The AlgorithmHistory to output
 * @returns The ouput stream
 */
std::ostream& operator<<(std::ostream& os, const AlgorithmHistory& AH)
{
  AH.printSelf(os);
  return os;
}

} // namespace API
} // namespace Mantid