#ifndef OCT_LOG_H
#define OCT_LOG_H

#include <stdio.h>

#define OCT_LOG_LEVEL_ERROR 0
#define OCT_LOG_LEVEL_WARNING 1
#define OCT_LOG_LEVEL_INFO 2
#define OCT_LOG_LEVEL_DEBUG 3

#define OCT_LOG_MAX_MESSAGE_LENGTH_LUA 1024

#include <lua5.3/lualib.h>

extern FILE* oct_log_output_file;
extern int oct_log_level;

#define OCT_LOG_ERROR(...)								\
	if (oct_log_level >= OCT_LOG_LEVEL_ERROR) {			\
		fprintf(oct_log_output_file, "[ERR]: ");		\
		fprintf(oct_log_output_file, __VA_ARGS__);		\
		fprintf(oct_log_output_file, "\n");				\
	}

#define OCT_LOG_WARNING(...)								\
	if (oct_log_level >= OCT_LOG_LEVEL_WARNING) {			\
		fprintf(oct_log_output_file, "[WAR]: ");			\
		fprintf(oct_log_output_file, __VA_ARGS__);			\
		fprintf(oct_log_output_file, "\n");					\
	}

#define OCT_LOG_INFO(...)								\
	if (oct_log_level >= OCT_LOG_LEVEL_INFO) {			\
		fprintf(oct_log_output_file, "[INF]: ");		\
		fprintf(oct_log_output_file, __VA_ARGS__);		\
		fprintf(oct_log_output_file, "\n");				\
	}

#define OCT_LOG_DEBUG(...)								\
	if (oct_log_level >= OCT_LOG_LEVEL_DEBUG) {			\
		fprintf(oct_log_output_file, "[DBG]: ");		\
		fprintf(oct_log_output_file, __VA_ARGS__);		\
		fprintf(oct_log_output_file, "\n");				\
	}

// If filename is null, default to stderr
int oct_log_init(char* filename, int level);
int oct_log_deinit();

// Logging on the C-side (oct_log_init) is initialized before lua
// Thus, we have to have a separate function for initializing logging on the
// lua-side that is called after lua is initialized
int oct_log_init_lua(lua_State* L);

// Can't call macros directly from lua, these are just wrapper functions
// for the above macros
int oct_log_error_lua(lua_State* L);
int oct_log_warning_lua(lua_State* L);
int oct_log_info_lua(lua_State* L);
int oct_log_debug_lua(lua_State* L);

#endif