#include <Adafruit_NeoPixel.h>
#define PIN 6 //LED-Stripe
#define NUMPIXELS 66
#define SENSORPIN1 A3 //Schalter hell
#define SENSORPIN2 A5 //Schalter dunkel
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRBW + NEO_KHZ800);
int Sensorstatus1 = 0;
int Sensorstatus2 = 0;
int a=0;   
int b=0;


void setup() {

  pinMode(SENSORPIN1, INPUT);
  pinMode(SENSORPIN2, INPUT);
  digitalWrite(SENSORPIN1, LOW); //10KOhm-R  
  digitalWrite(SENSORPIN2, LOW); //10KOhm-R
  pixels.begin();   
}

void EinschaltsequenzTag() {
  for(int i=-7; i<66; i++) { 
    pixels.setPixelColor(i, pixels.Color(100,100,200,250)); // weiß wird hell dargestellt
    pixels.show();
    pixels.setPixelColor(i+1, pixels.Color(0,0,0,200));
    pixels.setPixelColor(i+2, pixels.Color(0,0,0,150));
    pixels.setPixelColor(i+3, pixels.Color(0,0,0,100)); 
    pixels.setPixelColor(i+4, pixels.Color(0,0,0,50));

    pixels.setPixelColor(i+5, pixels.Color(0,10,0,0));
    pixels.setPixelColor(i+6, pixels.Color(0,60,0,0));
    pixels.setPixelColor(i+7, pixels.Color(0,150,0,0)); 
    pixels.setPixelColor(i+8, pixels.Color(0,250,0,0)); // erstes Pixel grün
    pixels.show();
    delay(20);
  }
}
void EinschaltsequenzNacht() {
  for(int i=-7; i<66; i++) { 
    pixels.setPixelColor(i, pixels.Color(20,20,20,20)); // weiß wird dunkel dargestellt
    pixels.show();
    pixels.setPixelColor(i+1, pixels.Color(0,0,0,20));
    pixels.setPixelColor(i+2, pixels.Color(0,0,0,30));
    pixels.setPixelColor(i+3, pixels.Color(0,0,0,40)); 
    pixels.setPixelColor(i+4, pixels.Color(0,0,0,50));

    pixels.setPixelColor(i+5, pixels.Color(0,10,0,0));
    pixels.setPixelColor(i+6, pixels.Color(0,60,0,0));
    pixels.setPixelColor(i+7, pixels.Color(0,150,0,0)); 
    pixels.setPixelColor(i+8, pixels.Color(0,250,0,0)); // erstes Pixel grün
    pixels.show();
    delay(20);
  }
}
void EingeschaltenTag() {
  for(int i=-7; i<60; i++) { 
    pixels.setPixelColor(i, pixels.Color(100,100,200,250)); // helles Weiß
    pixels.show();
  }
}
void EingeschaltenNacht() {
  for(int i=-7; i<60; i++) { 
    pixels.setPixelColor(i, pixels.Color(20,20,20,20)); // dunkles Weiß
    pixels.show();
  }
}
void Ausschaltsequenz() {
  for(int i=70; i>-4; i--) { 
    pixels.setPixelColor(i, pixels.Color(0,0,0,0));
    pixels.show();
    pixels.setPixelColor(i-1, pixels.Color(20,0,0,0)); //letztes Pixel rot
    pixels.setPixelColor(i-2, pixels.Color(60,0,0,0));
    pixels.setPixelColor(i-3, pixels.Color(120,0,0,0));
    pixels.setPixelColor(i-4, pixels.Color(255,0,0,0)); 
    pixels.show(); 
    delay(50);
  } 
}
void Ausgeschalten() {
  for(int i=-7; i<66; i++) { 
    pixels.setPixelColor(i, pixels.Color(0,0,0,0));
    pixels.show();
  }
}
void Bunt() {
  for(int i=66; i>-1; i--) { 
    pixels.setPixelColor(i, pixels.Color(150,0,150,0)); // sind beide Kanäle "akiviert", leuchtet es pink
    delay(20);
    pixels.show();
  } 
}

void loop() {
  Sensorstatus1 = digitalRead(SENSORPIN1);
  Sensorstatus2 = digitalRead(SENSORPIN2);

  if((Sensorstatus1 == HIGH) && (Sensorstatus2 == LOW)) {
    if(a==0) {
      a++;
      EinschaltsequenzTag();
    }
    else if(a==1) {
      b=0;
      EingeschaltenTag();
    }
  }
  else if((Sensorstatus1 == LOW) && (Sensorstatus2 == HIGH)) {
    if(a==0) {
      a++;
      EinschaltsequenzNacht();
    }
    else if(a==1) {
      b=0;
      EingeschaltenNacht();
    }
  }
  else if((Sensorstatus1 == LOW) && (Sensorstatus2 == LOW)) {
    if((b==0) && (a==1)) {
      b++;
      Ausschaltsequenz();
    }
    else {
      a=0;
      Ausgeschalten();
    }  
  }
  else if((Sensorstatus1 == HIGH) && (Sensorstatus2 == HIGH)) {
    a=0;
    b=0;
    Bunt();
  }
  else {}
}