MEGR 3171 Bathroom Occupation Detection

int photoresistor = A0;
int analogvalue;   
int inputPin = D0;               //  input pin (for PIR sensor)
int pirState = LOW;             // assuming no motion detected
int val = 0;                    // variable for reading the pin status

//This section of code simply assigns the pins on the Particle Photon, and names 
//variables that will be used later in the code.

void setup() {
    pinMode(photoresistor, INPUT);
    Particle.variable("analogvalue", &analogvalue, INT);
    pinMode(inputPin, INPUT);     // declare sensor as input
}

//This section of the code is the setup for the rest of the code.  It applies power
//to the pins requiring power, or names the pin to recieve an input; in this case
//from our photo resistor.

void loop() {
    val = digitalRead(inputPin);  // read input value
    analogvalue = analogRead(photoresistor);
    if (val == HIGH) {            // check if the input is HIGH
        if (pirState == LOW) {
          // turned on
          Particle.publish("MotionOn", PUBLIC);
          //  print on the output change, not state
          pirState = HIGH;delay(10);
        }
      } else {
        if (pirState == HIGH){
          // turned off
          Particle.publish("MotionOff", PUBLIC);
          // We only want to print on the output change, not state
          pirState = LOW;
        }
      }
    if (analogvalue < 3600){
        Particle.publish("LightOn", PUBLIC);
        delay(1000);
    }
    else {
        Particle.publish("LightOff", PUBLIC);
        delay(1000);
    }
    
}