const int illuminationLevelPin = A3;
const int firstRoomPin = 11;
const int secondRoomPin = 9;
const int thirdRoomPin = 5;

const int illuminationModePin = 2;
int illuminationMode = LOW;

const int ldrPin = A2;
const float BETA = 3950;
const float GAMMA = 0.7;
const float RL10 = 50;
float ldrValue = 0;

const int firstRoomMotionSenserPin = 4;
const int secondRoomMotionSenserPin = 3;
const int thirdRoomMotionSenserPin = 1;

void setup() {
  Serial.begin(9600);
  
  pinMode(firstRoomPin, OUTPUT);
  pinMode(secondRoomPin, OUTPUT);
  pinMode(thirdRoomPin, OUTPUT);
  pinMode(illuminationModePin, INPUT);
  pinMode(illuminationLevelPin, INPUT);
  pinMode(firstRoomMotionSenserPin, INPUT);
  pinMode(secondRoomMotionSenserPin, INPUT);
  pinMode(thirdRoomMotionSenserPin, INPUT);
}

void loop() {
  int analogValue = analogRead(ldrPin);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  ldrValue = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  ldrValue = (ldrValue / 100916.51) * 255;

  illuminationMode = digitalRead(illuminationModePin);
  if (illuminationMode == LOW) {
    analogWrite(firstRoomPin, digitalRead(firstRoomMotionSenserPin) * analogRead(illuminationLevelPin) / 4);
    analogWrite(secondRoomPin, digitalRead(secondRoomMotionSenserPin) * analogRead(illuminationLevelPin) / 4);
    analogWrite(thirdRoomPin, digitalRead(thirdRoomMotionSenserPin) * analogRead(illuminationLevelPin) / 4);

    Serial.print("Light regulator: ");
    Serial.println(analogRead(illuminationLevelPin) / 4);
  }
  else {
    analogWrite(firstRoomPin, digitalRead(firstRoomMotionSenserPin) * (255 - ldrValue));
    analogWrite(secondRoomPin, digitalRead(secondRoomMotionSenserPin) * (255 - ldrValue));
    analogWrite(thirdRoomPin, digitalRead(thirdRoomMotionSenserPin) * (255 - ldrValue));

    Serial.print("Street lightning: ");
    Serial.println(ldrValue);
  }

  delay(200);
}