// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef __ESP_LOG_H__
#define __ESP_LOG_H__

#include <stdint.h>
#include <stdarg.h>
#include "esp_common.h"
//#include "ets_sys.h"


#define CONFIG_LOG_COLORS 1
#define CONFIG_LOG_DEFAULT_LEVEL 100
#define CPU_CLK_FREQ 80000000

/**
 * @brief Log level
 *
 */
typedef enum {
    ESP_LOG_NONE,       /*!< No log output */
    ESP_LOG_ERROR,      /*!< Critical errors, software module can not recover on its own */
    ESP_LOG_WARN,       /*!< Error conditions from which recovery measures have been taken */
    ESP_LOG_INFO,       /*!< Information messages which describe normal flow of events */
    ESP_LOG_DEBUG,      /*!< Extra information which is not necessary for normal use (values, pointers, sizes, etc). */
    ESP_LOG_VERBOSE     /*!< Bigger chunks of debugging information, or frequent messages which can potentially flood the output. */
} esp_log_level_t;


/**
 * @brief Function which returns timestamp to be used in log output
 *
 * This function is used in expansion of ESP_LOGx macros.
 * In the 2nd stage bootloader, and at early application startup stage
 * this function uses CPU cycle counter as time source. Later when
 * FreeRTOS scheduler start running, it switches to FreeRTOS tick count.
 *
 * For now, we ignore millisecond counter overflow.
 *
 * @return timestamp, in milliseconds
 */
uint32_t esp_log_timestamp(void);

#if CONFIG_LOG_COLORS
#define LOG_COLOR_BLACK   "30"
#define LOG_COLOR_RED     "31"
#define LOG_COLOR_GREEN   "32"
#define LOG_COLOR_BROWN   "33"
#define LOG_COLOR_BLUE    "34"
#define LOG_COLOR_PURPLE  "35"
#define LOG_COLOR_CYAN    "36"
#define LOG_COLOR(COLOR)  "\033[0;" COLOR "m"
#define LOG_BOLD(COLOR)   "\033[1;" COLOR "m"
#define LOG_RESET_COLOR   "\033[0m"
#define LOG_COLOR_E       LOG_COLOR(LOG_COLOR_RED)
#define LOG_COLOR_W       LOG_COLOR(LOG_COLOR_BROWN)
#define LOG_COLOR_I       LOG_COLOR(LOG_COLOR_GREEN)
#define LOG_COLOR_D
#define LOG_COLOR_V
#else //CONFIG_LOG_COLORS
#define LOG_COLOR_E
#define LOG_COLOR_W
#define LOG_COLOR_I
#define LOG_COLOR_D
#define LOG_COLOR_V
#define LOG_RESET_COLOR
#endif //CONFIG_LOG_COLORS

#define LOG_FORMAT(letter, format)  LOG_COLOR_ ## letter #letter " (%u) %s: " format LOG_RESET_COLOR "\n"
#define LOG_LOCAL_LEVEL  ((esp_log_level_t) CONFIG_LOG_DEFAULT_LEVEL)

#define ESP_LOGE( tag, format, ... )  if (LOG_LOCAL_LEVEL >= ESP_LOG_ERROR)   { os_printf(LOG_FORMAT(E, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }
#define ESP_LOGW( tag, format, ... )  if (LOG_LOCAL_LEVEL >= ESP_LOG_WARN)    { os_printf(LOG_FORMAT(W, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }
#define ESP_LOGI( tag, format, ... )  if (LOG_LOCAL_LEVEL >= ESP_LOG_INFO)    { os_printf(LOG_FORMAT(I, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }
#define ESP_LOGD( tag, format, ... )  if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG)   { os_printf(LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }
#define ESP_LOGV( tag, format, ... )  if (LOG_LOCAL_LEVEL >= ESP_LOG_VERBOSE) { os_printf(LOG_FORMAT(V, format), esp_log_timestamp(), tag, ##__VA_ARGS__); }

#endif /* __ESP_LOG_H__ */