/*
 * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: CC0-1.0
 *
 * Zigbee light driver example
 *
 * This example code is in the Public Domain (or CC0 licensed, at your option.)
 *
 * Unless required by applicable law or agreed to in writing, this
 * software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied.
 */


#pragma once

#include <stdbool.h>
#include <math.h>

#ifdef __cplusplus
extern "C" {
#endif

/* light intensity level */
#define LIGHT_DEFAULT_ON  1
#define LIGHT_DEFAULT_OFF 0

/* LED strip configuration */
#define CONFIG_EXAMPLE_STRIP_LED_GPIO   8
#define CONFIG_EXAMPLE_STRIP_LED_NUMBER 1


/** Convert Hue,Saturation,V to RGB
 * RGB - [0..0xffff]
 * hue - [0..0xff]
 * Sat - [0..0xff]
 * V always = (ZB_UINT16_MAX-1)
*/
#define HSV_to_RGB(h, s, v, r, g, b )           \
{                                               \
  uint8_t i;                                    \
  uint8_t sector = UINT8_MAX/6;                 \
  float f, p, q, t;                             \
  if( s == 0 ) {  /* achromatic (grey)*/        \
    r = g = b = (v);                            \
  }                                             \
  else                                          \
  {                                             \
    i = h / sector;  /* sector 0 to 5 */        \
    f = h % sector; /* factorial part of h*/    \
    p = (float)(v * ( 1.0 - (float)s/UINT8_MAX ));                            \
    q = (float)(v * ( 1.0 - (float)s/UINT8_MAX * f/(float)sector ));          \
    t = (float)(v * ( 1.0 - (float)s/UINT8_MAX * ( 1 - f/(float)sector ) ));  \
    switch( i ) {                               \
      case 0: r = (v); g = t; b = p; break;     \
      case 1: r = q; g = (v); b = p; break;     \
      case 2: r = p; g = (v); b = t; break;     \
      case 3: r = p; g = q; b = (v); break;     \
      case 4: r = t; g = p; b = (v); break;     \
      case 5:                                   \
      default: r = (v); g = p; b = q; break;    \
    }                                           \
  }                                             \
}

#define XYZ_to_RGB(X, Y, Z, r, g, b)                        \
{                                                           \
  r = (float)( 3.240479*(X) -1.537150*(Y) -0.498535*(Z));   \
  g = (float)(-0.969256*(X) +1.875992*(Y) +0.041556*(Z));   \
  b = (float)( 0.055648*(X) -0.204043*(Y) +1.057311*(Z));   \
  if(r>1){r=1;}                                             \
  if(g>1){g=1;}                                             \
  if(b>1){b=1;}                                             \
}

/**
* @brief Set light power (on/off).
*
* @param  power  The light power to be set
*/
void light_driver_set_power(bool power);

/**
* @brief color light driver init, be invoked where you want to use color light
*
* @param power power on/off
*/
void light_driver_init(bool power);

/**
* @brief Set light level
*
* @param  level  The light level to be set
*/
void light_driver_set_level(uint8_t level);

/**
* @brief Set light color from RGB
*
* @param  red    The red color to be set
* @param  green  The green color to be set
* @param  blue   The blue color to be set
*/
void light_driver_set_color_RGB(uint8_t red, uint8_t green, uint8_t blue);

/**
* @brief Set light color from color xy
*
* @param  color_currentx  The color x to be set
* @param  color_currenty  The color y to be set
*/
void light_driver_set_color_xy(uint16_t color_current_x, uint16_t color_current_y);

/**
* @brief Set light color from hue saturation
*
* @param  hue  The hue to be set
* @param  sat  The sat to be set
*/
void light_driver_set_color_hue_sat(uint8_t hue, uint8_t sat);

#ifdef __cplusplus
} // extern "C"
#endif