#include <FastLED.h>

// Ledirenkaan tarvitsemat vakiot
#define NUM_LEDS 24       // Ledien määrä
#define LED_DATA_PIN 2    // Datapinni
#define BRIGHTNESS 8      // Kirkkaus (maksimi 255)
#define LED_OFFSET 0

CRGB leds[NUM_LEDS];      // Lista yksittäisten ledien väreille
CRGB color_minutes = CRGB::Green;
CRGB color_hours   = CRGB::Red;
CRGB color_parking = CRGB::Blue;

void setup() {
  FastLED.addLeds<WS2812B, LED_DATA_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(BRIGHTNESS );
  Serial.begin(57600);
}

uint16_t counter = 0;

void loop() {
  int hour = int(counter / 60) % 24;
  int minute = counter % 60;
  Serial.print(hour);
  Serial.print(":");
  Serial.println(minute);

  fill_solid(leds, NUM_LEDS, CRGB::Black);
  show_current_time(hour,minute);
  show_parking_time(hour, minute);
  FastLED.show();

  counter++;
  delay(100);
}

void show_parking_time(int hour,int minute){
  int parking_time_led = int(2 * (hour % 12) + (minute / 30) + LED_OFFSET) % 24;
  leds[parking_time_led] += color_parking;
}

void show_current_time(int hour, int minute) {
  int hour_led = (hour * 2 + LED_OFFSET) % 24;
  int minute_led = int(NUM_LEDS * minute / 60);
  leds[minute_led] += color_minutes;
  leds[hour_led] += color_hours;
}