const int sensorPin = 0;
const int temperaturePin = 1;

int lightLevel, high = 0, low = 1023;

int mark = 255;

int count = 1;

int buttonState;
int lastButtonState = LOW;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup()
{
  Serial.begin(9600);
  //LEDs
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);

  //button
  pinMode(2, INPUT);

}

void loop()
{
  int reading = digitalRead(2);

  if (reading != lastButtonState)
  {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay)
  {
    if (reading != buttonState)
    {
      buttonState = reading;
      if (buttonState == HIGH)
      {
        count++;
      }
    }
  }
  lastButtonState = reading;

  //set mode based on toggle status. True on, false off
  if(count % 2)
  {
    mode1();
  }
  else
  {
    mode2();
  }

}
void mode1()
{

  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);

  lightLevel = analogRead(sensorPin);

  // prepare light levels
  if (lightLevel < low)
  {
    low = lightLevel;
  }
  if (lightLevel > high)
  {
    high = lightLevel;
  }
  lightLevel = map(lightLevel, low+30, high-30, 0, 250);
  lightLevel = constrain(lightLevel, 0, 250);


  //turn on LEDS accordingly

  if (lightLevel > mark)
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(12, HIGH);
    digitalWrite(13, HIGH);

  }
  if (lightLevel > (mark * 0.9) && lightLevel < mark)
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(12, HIGH);

  }
  if (lightLevel > (mark * 0.8) && lightLevel < (mark * 0.9))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);

  }
  if (lightLevel > (mark * 0.7) && lightLevel < (mark * 0.8))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);

  }
  if (lightLevel > (mark * 0.6) && lightLevel < (mark * 0.7))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
  }
  if (lightLevel > (mark * 0.5) && lightLevel < (mark * 0.6))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
  }
  if (lightLevel > (mark * 0.4) && lightLevel < (mark * 0.5))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
  }
  if (lightLevel > (mark * 0.3) && lightLevel < (mark * 0.4))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
  }
  if (lightLevel > (mark * 0.2) && lightLevel < (mark * 0.3))
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
  }
  if (lightLevel < (mark * 0.2))
  {
    digitalWrite(4, HIGH);
  }
  Serial.println(lightLevel);
  delay(500);
}
void mode2()
{
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  digitalWrite(11, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);

  float voltage, degreesC;

  voltage = getVoltage(temperaturePin);

  degreesC = (voltage - 0.5) * 100.0;

  if( (degreesC > 0.0) && (degreesC < 4.0) )
  {
    digitalWrite(4, HIGH);
  }
  if( (degreesC > 3.0) && (degreesC < 7.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
  }
  if( (degreesC > 6.0) && (degreesC < 10.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
  }
  if( (degreesC > 9.0) && (degreesC < 13.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
  }
  if( (degreesC > 12.0) && (degreesC < 16.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
  }
  if( (degreesC > 15.0) && (degreesC < 19.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
  }
  if( (degreesC > 18.0) && (degreesC < 22.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
  }
  if( (degreesC > 21.0) && (degreesC < 25.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
  }
  if( (degreesC > 24.0) && (degreesC < 28.0) )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(12, HIGH);
  }
  if( degreesC > 27.0 )
  {
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(6, HIGH);
    digitalWrite(7, HIGH);
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH);
    digitalWrite(11, HIGH);
    digitalWrite(12, HIGH);
    digitalWrite(13, HIGH);
  }
  Serial.println(degreesC);
  delay(500);
}
float getVoltage(int pin)
{
  return (analogRead(pin) * 0.004882814);

  // This equation converts the 0 to 1023 value that analogRead()
  // returns, into a 0.0 to 5.0 value that is the true voltage
  // being read at that pin.
}