Door Lock with Light Sensor

int led = D0;
int photoresistor = A0;
int power = A5;
int analogvalue;     

//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(led,OUTPUT);
    pinMode(power,OUTPUT);
    pinMode(photoresistor, INPUT);
    
    digitalWrite(power,HIGH);
    
    Particle.variable("analogvalue", &analogvalue, INT);
    
}

//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() {
    
    analogvalue = analogRead(photoresistor);
    delay(100);
    
    if (analogvalue < 60){
        Particle.publish("controller","Dark", PUBLIC);
        digitalWrite(led,HIGH);
        delay(4000);
        //delay(900000);
    }
    else {
        Particle.publish("controller","Bright", PUBLIC);
        digitalWrite(led,LOW);
        delay(4000);
        //delay(900000);
    }
    
}
    
//This loop checks the analogue value of the photoresistor and compares it to the
//average light value constant selected.  Then, depending on whether the value is
//higher or lower than the selected constant, the Particle publishes an event to the
//console, with the event reading either "Bright" or "Dark."
//The delay is in there simply to slow the iteration process of the loop so the 
//Particle does not overload the console with too many publishes per second.