/*
 * logger.hpp
 *
 *
 * Logger Library Header
 *
 *
 * Copyright (C) 2013-2017  Bryant Moscon - bmoscon@gmail.com
 *
 * Please see the LICENSE file for the terms and conditions 
 * associated with this software.
 *
 */

#ifndef __PL_LOGGER__
#define __PL_LOGGER__


#include <fstream>
#include <cassert>
#include <ctime>
#include <sstream>


// Log levels
typedef enum {
  VERBOSE = 0,
  DEBUG,
  INFO,
  NOTICE,
  WARNING,
  ERROR,
  CRITICAL
} logger_level;



class Logger : public std::ostringstream {
public:
	Logger(std::ostream& s);
    Logger(const char *f);
    Logger(const std::string& f);
    Logger (const Logger &) = delete;
    Logger &operator= (const Logger &) = delete;
    ~Logger();
    
    
    void set_level(const logger_level& level);
    void set_default_line_level(const logger_level& level);
    void flush();
    template <typename T>
    Logger& operator<<(const T& t)
    {
	*static_cast<std::ostringstream *>(this) << t;
	return (*this);
    }
    
    Logger& operator<<(const logger_level& level);
    typedef Logger& (* LoggerManip)(Logger&);
    Logger& operator<<(LoggerManip m);
    
private:
    std::string get_time() const;
    inline const char* level_str(const logger_level& level);
    
    std::ofstream  _file;
    std::ostream&  _log; 
    logger_level   _level;
    logger_level   _line_level;
    logger_level   _default_line_level;
};


namespace std { 
    inline Logger& endl(Logger& out) 
    { 
	out.put('\n'); 
	out.flush(); 
	return (out); 
    } 
}


#endif