#pragma once

#include <stdbool.h>

#include <stdarg.h>

#include <syslog.h>

#include <sys/signalfd.h>

#include <errno.h>

#include "macro.h"

#include "sd-id128.h"

typedef enum LogTarget{

LOG_TARGET_CONSOLE,

LOG_TARGET_CONSOLE_PREFIXED,

LOG_TARGET_KMSG,

LOG_TARGET_JOURNAL,

LOG_TARGET_JOURNAL_OR_KMSG,

LOG_TARGET_SYSLOG,

LOG_TARGET_SYSLOG_OR_KMSG,

LOG_TARGET_AUTO, /* console if stderr is tty, JOURNAL_OR_KMSG otherwise */

LOG_TARGET_SAFE, /* console if stderr is tty, KMSG otherwise */

LOG_TARGET_NULL,

_LOG_TARGET_MAX,

_LOG_TARGET_INVALID = -1

} LogTarget;

void log_set_target(LogTarget target);

void log_set_max_level(int level);

void log_set_facility(int facility);

int log_set_target_from_string(const char *e);

int log_set_max_level_from_string(const char *e);

void log_show_color(bool b);

bool log_get_show_color(void) _pure_;

void log_show_location(bool b);

bool log_get_show_location(void) _pure_;

int log_show_color_from_string(const char *e);

int log_show_location_from_string(const char *e);

LogTarget log_get_target(void) _pure_;

int log_get_max_level(void) _pure_;

int log_open(void);

void log_close(void);

void log_forget_fds(void);

void log_close_syslog(void);

void log_close_journal(void);

void log_close_kmsg(void);

void log_close_console(void);

void log_parse_environment(void);

int log_internal(

int level,

int error,

const char *file,

int line,

const char *func,

const char *format, ...) _printf_(6,7);

int log_internalv(

int level,

int error,

const char *file,

int line,

const char *func,

const char *format,

va_list ap) _printf_(6,0);

int log_object_internal(

int level,

int error,

const char *file,

int line,

const char *func,

const char *object_field,

const char *object,

const char *format, ...) _printf_(8,9);

int log_object_internalv(

int level,

int error,

const char*file,

int line,

const char *func,

const char *object_field,

const char *object,

const char *format,

va_list ap) _printf_(8,0);

int log_struct_internal(

int level,

int error,

const char *file,

int line,

const char *func,

const char *format, ...) _printf_(6,0) _sentinel_;

int log_oom_internal(

const char *file,

int line,

const char *func);

int log_dump_internal(

int level,

int error,

const char *file,

int line,

const char *func,

char *buffer);

noreturn void log_assert_failed(

const char *text,

const char *file,

int line,

const char *func);

noreturn void log_assert_failed_unreachable(

const char *text,

const char *file,

int line,

const char *func);

void log_assert_failed_return(

const char *text,

const char *file,

int line,

const char *func);

#define log_full_errno(level, error, ...) \

({ \

int _level = (level), _e = (error); \

(log_get_max_level() >= LOG_PRI(_level)) \

? log_internal(_level, _e, __FILE__, __LINE__, __func__, __VA_ARGS__) \

: -abs(_e); \

})

#define log_full(level, ...) log_full_errno(level, 0, __VA_ARGS__)

#define log_debug(...) log_full(LOG_DEBUG, __VA_ARGS__)

#define log_info(...) log_full(LOG_INFO, __VA_ARGS__)

#define log_notice(...) log_full(LOG_NOTICE, __VA_ARGS__)

#define log_warning(...) log_full(LOG_WARNING, __VA_ARGS__)

#define log_error(...) log_full(LOG_ERR, __VA_ARGS__)

#define log_emergency(...) log_full(getpid() == 1 ? LOG_EMERG : LOG_ERR, __VA_ARGS__)

#define log_debug_errno(error, ...) log_full_errno(LOG_DEBUG, error, __VA_ARGS__)

#define log_info_errno(error, ...) log_full_errno(LOG_INFO, error, __VA_ARGS__)

#define log_notice_errno(error, ...) log_full_errno(LOG_NOTICE, error, __VA_ARGS__)

#define log_warning_errno(error, ...) log_full_errno(LOG_WARNING, error, __VA_ARGS__)

#define log_error_errno(error, ...) log_full_errno(LOG_ERR, error, __VA_ARGS__)

#define log_emergency_errno(error, ...) log_full_errno(getpid() == 1 ? LOG_EMERG : LOG_ERR, error, __VA_ARGS__)

#ifdef LOG_TRACE

# define log_trace(...) log_debug(__VA_ARGS__)

#else

# define log_trace(...) do {} while(0)

#endif

#define log_struct(level, ...) log_struct_internal(level, 0, __FILE__, __LINE__, __func__, __VA_ARGS__)

#define log_struct_errno(level, error, ...) log_struct_internal(level, error, __FILE__, __LINE__, __func__, __VA_ARGS__)

#define log_dump(level, buffer) log_dump_internal(level, 0, __FILE__, __LINE__, __func__, buffer)

#define log_oom() log_oom_internal(__FILE__, __LINE__, __func__)

bool log_on_console(void) _pure_;

const char *log_target_to_string(LogTarget target) _const_;

LogTarget log_target_from_string(const char *s) _pure_;

#define LOG_MESSAGE(fmt, ...) "MESSAGE=" fmt, ##__VA_ARGS__

#define LOG_MESSAGE_ID(x) "MESSAGE_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(x)

#define LOG_ERRNO(error) "ERRNO=%i", abs(error)

void log_received_signal(int level, const struct signalfd_siginfo *si);

void log_set_upgrade_syslog_to_journal(bool b);