#include <Adafruit_NeoPixel.h>
#include <Arduino.h>

#define PIN_H5 2
#define PIN_H1 3
#define PIN_M5 4
#define PIN_M1 5

#define N_H5 4
#define N_H1 4
#define N_M5 11
#define N_M1 4

Adafruit_NeoPixel stripH5(N_H5, PIN_H5, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel stripH1(N_H1, PIN_H1, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel stripM5(N_M5, PIN_M5, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel stripM1(N_M1, PIN_M1, NEO_GRB + NEO_KHZ800);

unsigned long lastUpdate = 0;
const unsigned long interval = 20000; // 20 000 ms = 20 s

// Generiert eine Zufallszeit, gibt sie per Serial aus und setzt die LEDs
void showRandomTime() {
  byte hours   = random(0, 24);
  byte minutes = random(0, 60);

  // Serial-Output
  Serial.print("Random Time: ");
  if (hours   < 10) Serial.print('0');
  Serial.print(hours);
  Serial.print(':');
  if (minutes < 10) Serial.print('0');
  Serial.println(minutes);

  // Blöcke berechnen
  byte b5 = hours / 5;
  byte b1 = hours % 5;
  byte m5 = minutes / 5;
  byte m1 = minutes % 5;

  // Zeile H5 (4 LEDs, rot)
  for (byte i = 0; i < N_H5; i++) {
    byte idx = N_H5 - 1 - i;
    stripH5.setPixelColor(idx, i < b5 ? stripH5.Color(255,0,0) : 0);
  }
  stripH5.show();

  // Zeile H1 (4 LEDs, rot)
  for (byte i = 0; i < N_H1; i++) {
    byte idx = N_H1 - 1 - i;
    stripH1.setPixelColor(idx, i < b1 ? stripH1.Color(255,0,0) : 0);
  }
  stripH1.show();

  // Zeile M5 (11 LEDs; gelb, 3./6./9. rot)
  for (byte i = 0; i < N_M5; i++) {
    byte idx = N_M5 - 1 - i;
    if (i < m5) {
      if (i == 2 || i == 5 || i == 8)
        stripM5.setPixelColor(idx, stripM5.Color(255,0,0));
      else
        stripM5.setPixelColor(idx, stripM5.Color(255,255,0));
    } else {
      stripM5.setPixelColor(idx, 0);
    }
  }
  stripM5.show();

  // Zeile M1 (4 LEDs, gelb)
  for (byte i = 0; i < N_M1; i++) {
    byte idx = N_M1 - 1 - i;
    stripM1.setPixelColor(idx, i < m1 ? stripM1.Color(255,255,0) : 0);
  }
  stripM1.show();
}

void setup() {
  Serial.begin(9600);
  while (!Serial);              // Warten bis Serial bereit

  // Zufallssamen initialisieren
  randomSeed(analogRead(A0));

  // Strips initialisieren
  stripH5.begin(); stripH5.setBrightness(100); stripH5.show();
  stripH1.begin(); stripH1.setBrightness(100); stripH1.show();
  stripM5.begin(); stripM5.setBrightness(100); stripM5.show();
  stripM1.begin(); stripM1.setBrightness(100); stripM1.show();

  // Sofort eine erste Zufallszeit anzeigen
  showRandomTime();
  lastUpdate = millis();
}

void loop() {
  if (millis() - lastUpdate >= interval) {
    lastUpdate = millis();
    showRandomTime();
  }
}