/**
 * Copyright (c) 2020 rxi
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MIT license. See `log.c` for details.
 */

#ifndef LOG_H
#define LOG_H

#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <time.h>

#define LOG_VERSION "0.1.0"

typedef struct {
    va_list     ap;
    const char *fmt;
    const char *file;
    struct tm  *time;
    void       *udata;
    int         line;
    int         level;
} log_Event;

typedef void ( *log_LogFn )( log_Event *ev );
typedef void ( *log_LockFn )( bool lock, void *udata );

enum { LOG_TRACE, LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR, LOG_FATAL };

#define logTrace( ... ) logLog( LOG_TRACE, __FILE__, __LINE__, __VA_ARGS__ )
#define logDebug( ... ) logLog( LOG_DEBUG, __FILE__, __LINE__, __VA_ARGS__ )
#define logInfo( ... ) logLog( LOG_INFO, __FILE__, __LINE__, __VA_ARGS__ )
#define logWarn( ... ) logLog( LOG_WARN, __FILE__, __LINE__, __VA_ARGS__ )
#define logError( ... ) logLog( LOG_ERROR, __FILE__, __LINE__, __VA_ARGS__ )
#define logFatal( ... ) logLog( LOG_FATAL, __FILE__, __LINE__, __VA_ARGS__ )

const char *log_level_string( int level );
void        log_set_lock( log_LockFn fn, void *udata );
void        log_set_level( int level );
void        log_set_quiet( bool enable );
int         log_add_callback( log_LogFn fn, void *udata, int level );
int         log_add_fp( FILE *fp, int level );

void logLog( int level, const char *file, int line, const char *fmt, ... );

#endif