/** @file
 *  @brief Bluetooth subsystem logging helpers.
 */

/*
 * Copyright (c) 2017 Nordic Semiconductor ASA
 * Copyright (c) 2015-2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef __BT_LOG_H
#define __BT_LOG_H

#include <sections.h>
#include <offsets.h>
#include <zephyr.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>

#ifdef __cplusplus
extern "C" {
#endif

#if !defined(BT_DBG_ENABLED)
#define BT_DBG_ENABLED 1
#endif

#if defined(CONFIG_BLUETOOTH_DEBUG_MONITOR)
#include <stdio.h>

/* These defines follow the values used by syslog(2) */
#define BT_LOG_ERR      3
#define BT_LOG_WARN     4
#define BT_LOG_INFO     6
#define BT_LOG_DBG      7

__printf_like(2, 3) void bt_log(int prio, const char *fmt, ...);

#define BT_DBG(fmt, ...) \
	if (BT_DBG_ENABLED) { \
		bt_log(BT_LOG_DBG, "%s (%p): " fmt, \
		       __func__, k_current_get(), ##__VA_ARGS__); \
	}

#define BT_ERR(fmt, ...) bt_log(BT_LOG_ERR, "%s: " fmt, \
				__func__, ##__VA_ARGS__)
#define BT_WARN(fmt, ...) bt_log(BT_LOG_WARN, "%s: " fmt, \
				 __func__, ##__VA_ARGS__)
#define BT_INFO(fmt, ...) bt_log(BT_LOG_INFO, fmt, ##__VA_ARGS__)

/* Enabling debug increases stack size requirement */
#define BT_STACK_DEBUG_EXTRA	300

#elif defined(CONFIG_BLUETOOTH_DEBUG_LOG)

#define SYS_LOG_DOMAIN "bt"
#define SYS_LOG_LEVEL SYS_LOG_LEVEL_DEBUG
#include <logging/sys_log.h>

#define BT_DBG(fmt, ...) \
	if (BT_DBG_ENABLED) { \
		SYS_LOG_DBG("(%p) " fmt, k_current_get(), \
			    ##__VA_ARGS__); \
	}

#define BT_ERR(fmt, ...) SYS_LOG_ERR(fmt, ##__VA_ARGS__)
#define BT_WARN(fmt, ...) SYS_LOG_WRN(fmt, ##__VA_ARGS__)
#define BT_INFO(fmt, ...) SYS_LOG_INF(fmt, ##__VA_ARGS__)

/* Enabling debug increases stack size requirement considerably */
#define BT_STACK_DEBUG_EXTRA	300

#else

static inline __printf_like(1, 2) void _bt_log_dummy(const char *fmt, ...) {};

#define BT_DBG(fmt, ...) \
		if (0) { \
			_bt_log_dummy(fmt, ##__VA_ARGS__); \
		}
#define BT_ERR BT_DBG
#define BT_WARN BT_DBG
#define BT_INFO BT_DBG

#define BT_STACK_DEBUG_EXTRA	0

#endif

#define BT_ASSERT(cond) if (!(cond)) { \
				BT_ERR("assert: '" #cond "' failed"); \
				k_oops(); \
			}

#define BT_STACK(name, size) \
		char __stack name[(size) + BT_STACK_DEBUG_EXTRA]
#define BT_STACK_NOINIT(name, size) \
		char __noinit __stack name[(size) + BT_STACK_DEBUG_EXTRA]

/* This helper is only available when BLUETOOTH_DEBUG is enabled */
const char *bt_hex(const void *buf, size_t len);

/* These helpers are only safe to be called from internal threads as they're
 * not multi-threading safe
 */
const char *bt_addr_str(const bt_addr_t *addr);
const char *bt_addr_le_str(const bt_addr_le_t *addr);


#ifdef __cplusplus
}
#endif

#endif /* __BT_LOG_H */