#include <Adafruit_NeoPixel.h>

#define TASTERPIN 3
#define RINGPIN 2
#define SENSORPIN A0
#define POTIPIN A1

Adafruit_NeoPixel LEDRing(16, RINGPIN, NEO_GRB + NEO_KHZ800);

void brightnessLEDRing(int a) {
    int brightness = map(a, 0, 1023, 255, 0); // Luxwerte invertiert auf Helligkeit mappen
    LEDRing.setBrightness(brightness);
    LEDRing.show();
}

void rudderIndicator(int b) {
    if (b >= 12 && b < 28) {
        int numLEDs = map(b, 28, 12, 0, 8); // Map to 0-8 LEDs
        for (int i = 0; i < 8; i++) {
            if (i < numLEDs) {
                LEDRing.setPixelColor(8 + i, 0, 255, 0); // Green LEDs on the right side
            } else {
                LEDRing.setPixelColor(8 + i, 0, 0, 0); // Turn off remaining LEDs on the right side
            }
        }
        for (int i = 0; i < 8; i++) {
            LEDRing.setPixelColor(7 - i, 0, 0, 0); // Turn off all LEDs on the left side
        }
    } else if (b > 28 && b <= 44) {
        int numLEDs = map(b, 28, 44, 0, 8); // Map to 0-8 LEDs
        for (int i = 0; i < 8; i++) {
            if (i < numLEDs) {
                LEDRing.setPixelColor(7 - i, 255, 0, 0); // Red LEDs on the left side
            } else {
                LEDRing.setPixelColor(7 - i, 0, 0, 0); // Turn off remaining LEDs on the left side
            }
        }
        for (int i = 0; i < 8; i++) {
            LEDRing.setPixelColor(8 + i, 0, 0, 0); // Turn off all LEDs on the right side
        }
    }

    LEDRing.show();
}

void setup() {
    pinMode(TASTERPIN, INPUT_PULLUP);
    LEDRing.begin();
    for (int i = 0; i < 16; i++) {
        LEDRing.setPixelColor(i, 0, 0, 0); // Clear LED ring
    }
    LEDRing.show();
}

void loop() {
    bool tasterstatus = digitalRead(TASTERPIN);
    static bool vorherigerTasterstatus = HIGH;
    static long lastDebounceTime = 0;
    static int zaehlwert = 0; 

    if (tasterstatus != vorherigerTasterstatus && millis() - lastDebounceTime >= 50) {
        lastDebounceTime = millis();
        if (tasterstatus == LOW) {
          zaehlwert ++;
          //Serial.println (zaehlwert); 
        }
    }
    if (zaehlwert % 2 == 1) {    
            int luxWert = map(analogRead(SENSORPIN), 0, 1023, 1023, 0);
            brightnessLEDRing(luxWert);
            int potiWert = analogRead(POTIPIN);
            int voltWert = 44 - (potiWert * (44 - 12) / 1023.0);
            rudderIndicator(voltWert);
    }

    else {
        for (int c = 0; c < 16; c++) {
            LEDRing.setPixelColor(c, 0, 0, 0);
        }
        LEDRing.show();
    }

    vorherigerTasterstatus = tasterstatus;
}