/*
The MIT License (MIT)

Copyright (c) 2013 winlin

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include <srs_core_log.hpp>

#include <string.h>
#include <sys/time.h>

#include <string>
#include <map>

#include <st.h>

ILogContext::ILogContext()
{
}

ILogContext::~ILogContext()
{
}

class LogContext : public ILogContext
{
private:
	class DateTime
	{
	private:
	    // %d-%02d-%02d %02d:%02d:%02d.%03d
	    #define DATE_LEN 24
	    char time_data[DATE_LEN];
	public:
	    DateTime();
	    virtual ~DateTime();
	public:
	    virtual const char* format_time();
	};
private:
    DateTime time;
    std::map<st_thread_t, int> cache;
public:
    LogContext();
    virtual ~LogContext();
public:
    virtual void generate_id();
    virtual int get_id();
public:
    virtual const char* format_time();
};

ILogContext* log_context = new LogContext();

LogContext::DateTime::DateTime()
{
    memset(time_data, 0, DATE_LEN);
}

LogContext::DateTime::~DateTime()
{
}

const char* LogContext::DateTime::format_time()
{
    // clock time
    timeval tv;
    if (gettimeofday(&tv, NULL) == -1) {
        return "";
    }
    // to calendar time
    struct tm* tm;
    if ((tm = localtime(&tv.tv_sec)) == NULL) {
        return "";
    }
    
    // log header, the time/pid/level of log
    // reserved 1bytes for the new line.
    snprintf(time_data, DATE_LEN, "%d-%02d-%02d %02d:%02d:%02d.%03d", 
        1900 + tm->tm_year, 1 + tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec, 
        (int)(tv.tv_usec / 1000));
        
    return time_data;
}

LogContext::LogContext()
{
}

LogContext::~LogContext()
{
}

void LogContext::generate_id()
{
	static int id = 1;
    cache[st_thread_self()] = id++;
}

int LogContext::get_id()
{
    return cache[st_thread_self()];
}

const char* LogContext::format_time()
{
    return time.format_time();
}