#include "ichatserv.h"

static FILE* logfile = NULL;

int open_log()
{
    logfile = fopen( OPT_LOGFILE, "a+t" );
    if( ! logfile )
    {
	perror( "Error opening log file\n" );
	return 0;
    }
    
    return 1;
}

void close_log()
{
    if( logfile )
    {
	fclose( logfile );
	logfile = NULL;
    }
}

void print2log( const char* msg, ... )
{
    va_list arglist;
    
    if( logfile )
    {
        time_t tp;
	char* ts;

	// get the time and clip finishing \n symbol    
	tp = time( NULL );
	ts = ctime( &tp );
    	ts[strlen( ts )-1] = 0;
    
	// write header
	fprintf( logfile, "%s iChatSrv[%d]: ", ts, getpid() ); 
	
	// print the message
	va_start( arglist, msg );
	
	vfprintf( logfile, msg, arglist );
	
	va_end( arglist );
	
	// print the footer
	fputc( '\n', logfile );
	
	// force log to be updated
	fflush( logfile );
    }
}