////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
///
/// Portions of the code are:
///
/// Copyright (c) 1999, Google Inc.
/// All rights reserved.
//
/// Redistribution and use in source and binary forms, with or without
/// modification, are permitted provided that the following conditions are
/// met:
//
///     * Redistributions of source code must retain the above copyright
///       notice, this list of conditions and the following disclaimer.
///     * 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.
///     * Neither the name of Google Inc. nor the names of its
///       contributors may be used to endorse or promote products derived
///       from this software without specific prior written permission.
///
/// 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
/// OWNER 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.
///
/// Author: Ray Sidney
////////////////////////////////////////////////////////////////////////////////

#ifndef ARANGODB_LOGGER_LOG_MACROS_H
#define ARANGODB_LOGGER_LOG_MACROS_H 1

#include "Logger.h"
#include "LoggerStream.h"

////////////////////////////////////////////////////////////////////////////////
/// @brief logs a message for a topic
////////////////////////////////////////////////////////////////////////////////

#define ARANGO_INTERNAL_LOG_HELPER(id)                        \
  ::arangodb::Logger::LINE(__LINE__)                          \
  << ::arangodb::Logger::FILE(__FILE__)                       \
  << ::arangodb::Logger::FUNCTION(__FUNCTION__)               

#define LOG_TOPIC(id, level, logger)                                        \
  !::arangodb::Logger::isEnabled((::arangodb::LogLevel::level), (logger))   \
    ? (void)nullptr                                                         \
    : ::arangodb::LogVoidify() & (::arangodb::LoggerStream()                \
      << (::arangodb::LogLevel::level)                                      \
      << ( ::arangodb::Logger::getShowIds() ? "[" id "] " : "" ))           \
      << (logger)                                                           \
      << ARANGO_INTERNAL_LOG_HELPER(id)

////////////////////////////////////////////////////////////////////////////////
/// @brief logs a message for a topic given that a condition is true
////////////////////////////////////////////////////////////////////////////////

#define LOG_TOPIC_IF(id, level, logger, cond)                                           \
  !(::arangodb::Logger::isEnabled((::arangodb::LogLevel::level), (logger)) && (cond))   \
    ? (void)nullptr                                                                     \
    : ::arangodb::LogVoidify() & (::arangodb::LoggerStream()                            \
      << (::arangodb::LogLevel::level)                                                  \
      << ( ::arangodb::Logger::getShowIds() ? "[" id "] " : "" ))                       \
      << (logger)                                                                       \
      << ARANGO_INTERNAL_LOG_HELPER(id)

////////////////////////////////////////////////////////////////////////////////
/// @brief logs a message for debugging during development
////////////////////////////////////////////////////////////////////////////////

#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
  #define LOG_DEVEL_LEVEL ERR
#else
  #define LOG_DEVEL_LEVEL DEBUG
#endif

#define LOG_DEVEL \
  LOG_TOPIC("xxxxx", LOG_DEVEL_LEVEL, ::arangodb::Logger::FIXME) << "###### "

#define LOG_DEVEL_IF(cond) \
  LOG_TOPIC_IF("xxxxx", LOG_DEVEL_LEVEL, ::arangodb::Logger::FIXME, (cond)) << "###### "

////////////////////////////////////////////////////////////////////////////////
/// @brief helper class for macros
////////////////////////////////////////////////////////////////////////////////

namespace arangodb {

class LoggerStream;

class LogVoidify {
 public:
  LogVoidify() {}
  void operator&(LoggerStream const&) {}
};

}  // namespace arangodb

#endif