#ifndef R_LOG_H
#define R_LOG_H

#include <r_userconf.h>
#include <r_list.h>

#ifdef __cplusplus
extern "C" {
#endif

#ifndef R_LOG_ORIGIN
// log.origin = module or function name
#define R_LOG_ORIGIN __FUNCTION__
#endif
#ifndef R_LOG_SOURCE
// log.source = file:line
#define R_LOG_SOURCE __FILE__
#endif

#ifndef R_LOG_DISABLE
#define R_LOG_DISABLE 0
#endif

// unused, but could be a good replacement for eprintf when fully transitioned?
#define etrace(m) eprintf ("--> %s:%d : %s\n", __FUNCTION__, __LINE__, m)

#define R_LOG_LEVEL_DEFAULT R_LOG_LEVEL_TODO

typedef enum r_log_level {
	R_LOG_LEVEL_FATAL = 0, // May this trap?
	R_LOG_LEVEL_ERROR = 1,
	R_LOG_LEVEL_INFO = 2,
	R_LOG_LEVEL_WARN = 3,
	R_LOG_LEVEL_HINT = 4, // best-practice hint, also gated by log.hints
	R_LOG_LEVEL_TODO = 5,
	R_LOG_LEVEL_DEBUG = 6,
	R_LOG_LEVEL_TRACE = 7,
	R_LOG_LEVEL_LAST = 8,
} RLogLevel;

typedef bool (*RLogCallback)(void *user, int type, const char *origin, const char *msg);

R_VEC_TYPE_FORWARD (RVecRLogCallbackUser);

typedef struct r_log_t {
	int level; // skip messages lower than this level
	int traplevel; // skip messages lower than this level
	void *user;
	char *file;
	char *filter;
	bool color; // colorize depending on msg level
	bool hints; // show R_LOG_HINT best-practice messages
	bool quiet; // be quiet in the console
	bool show_origin;
	bool show_source;
	bool show_ts;
	bool iterating; // true while iterating cbs, prevents modification
	RVecRLogCallbackUser *cbs;
	PrintfCallback cb_printf;
} RLog;

typedef struct r_log_source_t {
	const char *file;
	ut32 lineno;
	const char *source;
} RLogSource;

R_API bool r_log_init(void);
R_API void r_log_fini(void);
R_API bool r_log_match(int level, const char *origin);
R_API void r_log_message(RLogLevel level, const char *origin, const char *func, int line, const char *fmt, ...) R_PRINTF_CHECK(5, 6);
R_API void r_log_vmessage(RLogLevel level, const char *origin, const char *func, int line, const char *fmt, va_list ap) R_PRINTF_CHECK(5, 0);
R_API void r_log_add_callback(RLogCallback cb, void *user);
R_API void r_log_del_callback(RLogCallback cb);

#if R_LOG_DISABLE
#define R_LOG(f,...) do {} while(0)
#define R_LOG_FATAL(f,...) do {} while(0)
#define R_LOG_ERROR(f,...) do {} while(0)
#define R_LOG_INFO(f,...) do {} while(0)
#define R_LOG_TODO(f,...) do {} while(0)
#define R_LOG_WARN(f,...) do {} while(0)
#define R_LOG_HINT(f,...) do {} while(0)
#define R_LOG_DEBUG(f,...) do {} while(0)
#else
#define R_LOG(f,...) if (r_log_match (R_LOG_LEVEL_INFO, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_INFO, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_FATAL(f,...) if (r_log_match (R_LOG_LEVEL_FATAL, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_FATAL, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_ERROR(f,...) if (r_log_match (R_LOG_LEVEL_ERROR, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_ERROR, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_INFO(f,...) if (r_log_match (R_LOG_LEVEL_INFO, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_INFO, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_TODO(f,...) if (r_log_match (R_LOG_LEVEL_TODO, R_LOG_ORIGIN)) {r_log_message(R_LOG_LEVEL_TODO, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_WARN(f,...) if (r_log_match (R_LOG_LEVEL_WARN, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_WARN, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#define R_LOG_HINT(f,...) if (r_log_match (R_LOG_LEVEL_HINT, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_HINT, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#if WANT_DEBUGSTUFF
#define R_LOG_DEBUG(f,...) if (r_log_match (R_LOG_LEVEL_DEBUG, R_LOG_ORIGIN)) {r_log_message (R_LOG_LEVEL_DEBUG, R_LOG_ORIGIN, __FILE__, __LINE__, f, ##__VA_ARGS__);}
#else
#define R_LOG_DEBUG(f,...) do {} while(0)
#endif
#endif

R_API void r_log_set_file(const char *expr);
R_API void r_log_set_filter(const char *expr);
R_API void r_log_set_colors(bool show_colors);
R_API void r_log_show_origin(bool show_origin);
R_API void r_log_show_source(bool show_source);
R_API void r_log_set_quiet(bool be_quiet);
R_API void r_log_set_hints(bool show_hints);
R_API bool r_log_hints(void);
R_API void r_log_set_level(RLogLevel level);
R_API void r_log_show_ts(bool ts);
R_API RLogLevel r_log_get_level(void);
R_API RLogLevel r_log_get_traplevel(void);
R_API void r_log_set_traplevel(RLogLevel level);
R_API void r_log_set_callback(RLogCallback cbfunc);
R_API const char *r_log_level_tostring(int i);
R_API int r_log_level_fromstring(const char *);
R_API const char *r_log_level_tocolor(int i);

R_API void r_log(const char *funcname, const char *filename, ut32 lineno, RLogLevel level, const char *tag, const char *fmtstr, ...) R_PRINTF_CHECK(6, 7);
R_API void r_vlog(const char *funcname, const char *filename, ut32 lineno, RLogLevel level, const char *tag, const char *fmtstr, va_list args) R_PRINTF_CHECK(6, 0);

#ifdef __cplusplus
}
#endif

#endif //  R_LOG_H