//===-- support/log.cpp -----------------------------------------*- C++ -*-===//
//
//                                 The RoSA Framework
//
//===----------------------------------------------------------------------===//
///
/// \file support/log.cpp
///
/// \author David Juhasz (david.juhasz@tuwien.ac.at)
///
/// \date 2017
///
/// \brief Implementation for rosa/support/log.h.
///
//===----------------------------------------------------------------------===//

#include "rosa/support/log.h"

#include "rosa/support/debug.hpp" // NOLINT
#include "rosa/support/terminal_colors.h"

#include <array>

namespace rosa {

/// Textual representation of \c rosa::LogLevel values.
///
/// \note Do not index with \c rosa::LogLevel::NumLogLevels!
constexpr std::array<const char *, static_cast<size_t>(LogLevel::NumLogLevels)>
    LogLevelStrings{{"ERROR", "WARNING", "INFO", "DEBUG", "TRACE"}};

/// Terminal colors associated to \c rosa::LogLevel values.
///
/// \note Do not index with \c rosa::LogLevel::NumLogLevels!
constexpr std::array<terminal::Color,
                     static_cast<size_t>(LogLevel::NumLogLevels)>
    LogLevelColors{{
        terminal::Color::Red,     ///< color corresponding to
                                  /// `rosa::LogLevel::Error`
        terminal::Color::Yellow,  ///< color corresponding to
                                  /// `rosa::LogLevel::Warning`
        terminal::Color::Green,   ///< color corresponding to
                                  /// `rosa::LogLevel::Info`
        terminal::Color::Blue,    ///< color corresponding to
                                  /// `rosa::LogLevel::Debug`
        terminal::Color::Default, ///< color corresponding to
                                  /// `rosa::LogLevel::Trace`
    }};

std::string logLevelToString(const LogLevel logLevel) {
  ASSERT(logLevel != LogLevel::NumLogLevels);
  return LogLevelStrings[static_cast<size_t>(logLevel)];
}

std::ostream &operator<<(std::ostream &OS, const LogLevel logLevel) {
  ASSERT(logLevel != LogLevel::NumLogLevels);
  OS << LogLevelColors[static_cast<size_t>(logLevel)] << "["
     << logLevelToString(logLevel) << "]" << terminal::Color::Default;
  return OS;
}

std::ostream LogSink(nullptr);

} // End namespace rosa