#ifndef INCLUDED_BOBCAT_LOG_
#define INCLUDED_BOBCAT_LOG_

#include <iostream>

#include <fstream>
#include <memory>

#include "../logbuf/logbuf"
#include "../level/level"
#include "../exception/exception"

namespace FBB
{

enum LogManipulator
{
    FATAL,
    nl,                 // new line without new time stamp
    fnl,                // forced new line, even at low level specs.
};

class Log: private LogBuf, public std::ostream
{
                                                                    // opins:
    friend Log &operator<<(Log &log, LogManipulator manip);         //  2.cc

    friend Log &operator<<(Log &log,                                //  3.cc
                           std::ostream &(*fun)(std::ostream &str)); 

    friend Log &operator<<(Log &log,                                //  4.cc
                           std::ios_base &(*fun)(std::ios_base &base));

    template<typename Type>
    friend Log &operator<<(Log &log, Type const &type);             //   .f

    static std::unique_ptr<Log> s_stream;

    std::ofstream d_stream;
    size_t d_level;         // defined by setLevel: the minimum level 
                            // messages must have to be inserted

    struct Active
    {
        bool levelOK;
        bool opfunOK;
        std::string accept; // accepted log characters for opfun.cc
    };
 
    std::unique_ptr<Active> d_active;

    public:
        static Log &instance();
        static Log &initialize(std::string const &filename,
                std::ios::openmode = std::ios::out | std::ios::app,
                char const *delim = " ");

        Log();
        Log(std::ostream &out,  char const *delim = " ");
        Log(std::string const &filename,
                std::ios::openmode = std::ios::out | std::ios::app,
                char const *delim = " ");

        void open(std::string const &filename,
                std::ios::openmode = std::ios::out | std::ios::app,
                char const *delim = " ");

        size_t level() const;                                           // .f
        std::ostream &level(size_t useLevel);
        void  setLevel(size_t newLevel);
        void  setTimestamp(TimeStamps timeStamp, char const *delim = " ");
        void  off();                                                    // .f
        void  on(size_t logLevel = 0);

        Log &operator()(char accept);

        void str(std::string const &str);
        std::string const &str() const;

    private:
        void init();
};

#include "log.f"

//std::ostream &operator<<(std::ostream &str, LogManipulator);    // opins1.cc

} // FBB

std::ostream &operator<<(std::ostream &str, FBB::LogManipulator);    // opins1.cc

#endif
