/*
 * Copyright (C) 1999-2011 Insight Software Consortium
 * Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * Licensed 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 "otbStandardWriterWatcher.h"

namespace otb
{

StandardWriterWatcher
::StandardWriterWatcher(itk::ProcessObject* process,
                        const char *comment)
  : WriterWatcherBase(process, comment)
{
  m_StarsCount = 50;
}

StandardWriterWatcher
::StandardWriterWatcher(itk::ProcessObject* process, itk::ProcessObject * source,
                        const char *comment)
  : WriterWatcherBase(process, source, comment)
{
  m_StarsCount = 50;
}

StandardWriterWatcher
::StandardWriterWatcher(itk::ProcessObject* process,
                        const std::string& comment)
  : WriterWatcherBase(process, comment.c_str())
{
  m_StarsCount = 50;
}

StandardWriterWatcher
::StandardWriterWatcher(itk::ProcessObject* process, itk::ProcessObject * source,
                        const std::string& comment)
  : WriterWatcherBase(process, source, comment.c_str())
{
  m_StarsCount = 50;
}

StandardWriterWatcher
::StandardWriterWatcher(const StandardWriterWatcher& watch)  : WriterWatcherBase(watch)
{
  // Initialize state
  m_StarsCount = watch.m_StarsCount;
}

void
StandardWriterWatcher
::operator =(const StandardWriterWatcher& watch)
{
  // Initialize state
  WriterWatcherBase::operator=(watch);
  m_StarsCount = watch.m_StarsCount;
}

void
StandardWriterWatcher
::ShowWriterProgress()
{
  this->ShowProgress();
}

void
StandardWriterWatcher
::ShowFilterProgress()
{
  this->ShowProgress();
}

void
StandardWriterWatcher
::ShowProgress()
{
  std::ostringstream oss;
  oss.str("");
  oss << "\r";

  if (m_SourceProcess)
    {
    double      progress = m_SourceProcess->GetProgress();
    int         progressPercent = static_cast<int>(progress * 100);
    unsigned int nbStars = static_cast<int>(progress * m_StarsCount);
    if(nbStars>m_StarsCount)
      {
      nbStars = m_StarsCount;
      }

    std::string stars(nbStars, '*');
    std::string blanks(m_StarsCount - nbStars, ' ');
    oss << "Current Tile: ";
    if (progressPercent < 10)
      {
      oss << " ";
      }
    if (progressPercent < 100)
      {
      oss << " ";
      }
    oss << progressPercent << "% [" << stars << blanks << "]  ";
    }

  if (m_Process)
    {
    double      progress = m_Process->GetProgress();
    int         progressPercent = static_cast<int>(progress * 100);
    unsigned int nbStars = static_cast<int>(progress * m_StarsCount);
    if(nbStars>m_StarsCount)
      {
      nbStars = m_StarsCount;
      }
    std::string stars(nbStars, '*');
    std::string blanks(m_StarsCount - nbStars, ' ');
    oss << "Writing: ";
    if (progressPercent < 10)
      {
      oss << " ";
      }
    if (progressPercent < 100)
      {
      oss << " ";
      }
    oss << progressPercent << "% [" << stars << blanks << "]" << std::flush;
    }
  std::cout << oss.str();
}

void
StandardWriterWatcher
::StartWriter()
{
  m_Stopwatch.Start();
  std::cout << "Writing task: " << " \"" << m_Comment << "\" " << std::endl;
  std::cout << "Writer type: " << (m_Process.GetPointer() ? m_Process->GetNameOfClass() : "None") << std::endl;
  std::cout << "Filter type: " << (m_SourceProcess.GetPointer() ? m_SourceProcess->GetNameOfClass() : "None") <<
  std::endl;
}

void
StandardWriterWatcher
::EndWriter()
{
  m_Stopwatch.Stop();
  std::cout << std::endl << "Writing task took "
            << m_Stopwatch.GetElapsedMilliseconds() / 1000
            << " seconds." << std::endl;
}

} // end namespace otb
