#include <stdio.h>
#include "esp_err.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "driver/ledc.h"
#include "ledController.h"

esp_err_t init_led_driver(led_disp_config_t configs[], uint8_t config_nb){
	ledc_timer_config_t ledc_timer = {
		.speed_mode       = LEDC_LOW_SPEED_MODE,
		.timer_num        = LEDC_TIMER_0,
		.duty_resolution  = LEDC_TIMER_10_BIT,
		.freq_hz          = 5000,
		.clk_cfg          = LEDC_AUTO_CLK
	};

	ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));

	for(int i=0; i < config_nb; i++){
		ESP_LOGI("led setup", "conf n %i, gpio %i, duty %i", i, configs[i].output, configs[i].intensity);
		ledc_channel_config_t ledc_channel = {
			.speed_mode     = LEDC_LOW_SPEED_MODE,
			.channel        = i,
			.timer_sel      = LEDC_TIMER_0,
			.intr_type      = LEDC_INTR_DISABLE,
			.gpio_num       = configs[i].output,
			.duty           = configs[i].intensity,
			.hpoint         = 0
		};
		ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel));
	}

	return ESP_OK;
}

esp_err_t update_led_status(led_disp_config_t configs[], uint8_t config_nb, uint16_t co2){
	for(int i=0; i < config_nb; i++){
		uint16_t duty = (co2>configs[i].min && co2<configs[i].max)?configs[i].intensity:0;
		ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, i, duty));
		ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, i));
	}
	return ESP_OK;
}

led_disp_config_t* get_led_configuration(nvs_handle_t nvs){
	uint8_t nb = 0;
	ESP_ERROR_CHECK(nvs_get_u8(nvs, "led_nb", &nb));
	led_disp_config_t* led_configs = malloc(nb * sizeof(led_disp_config_t));
	size_t conf_size = sizeof(led_disp_config_t);
	for(int i = 0; i < nb; i++){
		char key[16];
		sprintf(key, "led%i_conf", i+1);
		ESP_ERROR_CHECK(nvs_get_blob(nvs, key, &led_configs[i], &conf_size));
	}
	return led_configs;

}