/* -----------------------------------------------------------------------------
 * Copyright 2022 Massachusetts Institute of Technology.
 * All Rights Reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Research was sponsored by the United States Air Force Research Laboratory and
 * the United States Air Force Artificial Intelligence Accelerator and was
 * accomplished under Cooperative Agreement Number FA8750-19-2-1000. The views
 * and conclusions contained in this document are those of the authors and should
 * not be interpreted as representing the official policies, either expressed or
 * implied, of the United States Air Force or the U.S. Government. The U.S.
 * Government is authorized to reproduce and distribute reprints for Government
 * purposes notwithstanding any copyright notation herein.
 * -------------------------------------------------------------------------- */
#pragma once

#include <iostream>

#define ENABLE_LOGGING() 0

// To log use the macro SG_LOG(SEVERITY) << "message"; If available, this will use glog,
// otherwise it will use std::cout.

namespace spark_dsg {

struct DefaultLogger {
  DefaultLogger() = default;
  virtual ~DefaultLogger() {
    // Flush the log after invoking the macro.
    std::cout << std::endl;
  }
};

}  // namespace spark_dsg

#if ENABLE_LOGGING()
#ifdef GLOG_LOGGING_H
#define SG_LOG(SEVERITY) LOG(#SEVERITY)
#else
#define SG_LOG(SEVERITY)       \
  (spark_dsg::DefaultLogger(), \
   std::cout << "[" << #SEVERITY << "] [" << __FILE__ << ":" << __LINE__ << "]: ")
#endif
#else
#define SG_LOG(SEVERITY) std::ostream(nullptr)
#endif

// Always log dev messages, i.e. about loading deprecated files.
#define SG_LOG_DEV (spark_dsg::DefaultLogger(), std::cout)
