#include "rgb_led.h"

#include "esp_log.h"
#include "led_strip.h"

namespace kvida::drivers {

namespace {
constexpr const char *TAG = "rgb_led";
constexpr int kGpio = 8; // WS2812 on ESP32-C6-DevKitC-1
led_strip_handle_t g_strip = nullptr;
} // namespace

void rgb_led_init()
{
    if (g_strip) {
        return;
    }

    led_strip_config_t strip_config = {};
    strip_config.strip_gpio_num = kGpio;
    strip_config.max_leds = 1;
    strip_config.led_model = LED_MODEL_WS2812;
    strip_config.color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_GRB;

    led_strip_rmt_config_t rmt_config = {};
    rmt_config.resolution_hz = 10 * 1000 * 1000;

    esp_err_t err = led_strip_new_rmt_device(&strip_config, &rmt_config, &g_strip);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "led_strip_new_rmt_device failed: %s", esp_err_to_name(err));
        return;
    }
    led_strip_clear(g_strip);
}

void rgb_led_set_color(uint8_t red, uint8_t green, uint8_t blue)
{
    if (!g_strip) {
        ESP_LOGE(TAG, "rgb_led_set_color() called before rgb_led_init()");
        return;
    }
    led_strip_set_pixel(g_strip, 0, red, green, blue);
    led_strip_refresh(g_strip);
}

} // namespace kvida::drivers