/**
 * Copyright (C) 2020-2021 Xilinx, Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License"). You may
 * not use this file except in compliance with the License. A copy of the
 * License is located 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 files
// Please keep these to the bare minimum
#include <string>
#include <chrono>

// ------ N A M E S P A C E ---------------------------------------------------

namespace XBUtilities {

class Timer {
  std::chrono::high_resolution_clock::time_point mTimeStart;

 public:
  Timer() {
    reset();
  }

  std::chrono::duration<double> stop() {
    std::chrono::high_resolution_clock::time_point timeEnd = std::chrono::high_resolution_clock::now();
    return std::chrono::duration<double>(timeEnd - mTimeStart);
  }

  void reset() {
    mTimeStart = std::chrono::high_resolution_clock::now();
  }
};

class ProgressBar {
 public:
  ProgressBar(const std::string &_opName, unsigned int _maxNumIterations, bool _isBatch, std::ostream &_ostr);

  void
  update(unsigned int _iteration);

  void
  finish(bool _successful, const std::string &_msg);

  static std::string
  formatTime(std::chrono::duration<double> duration);

  unsigned int getMaxIterations() {return m_maxNumIterations;}
  
  ~ProgressBar();
  ProgressBar() = delete;

 private:
  std::string m_opName;
  unsigned int m_maxNumIterations;
  bool m_isBatch;
  std::ostream &m_ostr;
  unsigned int m_runningIteration;
  bool m_finished;
  Timer m_timer;
  std::chrono::duration<double> m_elapsedTime;
  std::chrono::high_resolution_clock::time_point m_lastUpdated;
};
}

