#pragma once
#include <stddef.h>

#define CLOG_MSG_MAX 0x1000

typedef enum {
	CLOG_FMT_JSONL      = 0,
	CLOG_FMT_TEXT       = 1,
	CLOG_FMT_TEXT_COLOR = 2,
} ClogFmt;

typedef enum {
	CLOG_INF = 0,
	CLOG_DBG = 1,
	CLOG_WRN = 2,
	CLOG_ERR = 3,
} ClogLevel;

typedef struct ClogEntry {
	ClogLevel    level;
	char         ts[26];           /* ctime() output, newline stripped  */
	const char  *file;             /* points to __FILE__ string literal */
	unsigned int line;             /* __LINE__                          */
	const char  *func;             /* points to __func__ string literal */
	char         msg[CLOG_MSG_MAX];
} ClogEntry;

typedef ClogEntry *CLog;

void clog_set_fmt(ClogFmt fmt);

CLog clog_log_init(void);
void clog_log_free(CLog log);
void clog_log_print(const CLog log);

/* internal — do not call directly */
void _clog_write_imm(ClogLevel level, const char *file, unsigned int line, const char *func, const char *msg);
void _clog_write_log(CLog *log, ClogLevel level, const char *file, unsigned int line, const char *func, const char *msg);

/* imperative */
#define clog(lvl, msg)          _clog_write_imm((lvl), __FILE__, __LINE__, __func__, (msg))

/* monoid */
#define clogm(lvl, log, msg)    _clog_write_log(&(log), (lvl), __FILE__, __LINE__, __func__, (msg))