Fan- DC motor and Potentiometer Activity

/*
* Divya Inaganti
* June 19, 2017
* Fan DC Motor and Integrated Circuit Activity
 */
 const int controlPin1 = 2;
 const int controlPin2 = 3;
 const int enablePin = 9;
 const int directionSwitchPin = 4;
 const int onOffSwitchStatePin = 6;
 const int potPin = A0;
 int onOffSwitchState= 0;
 int onOffSwitchStateSwitchPin = 0;
 int previousOnOffSwitchState = 0;
 int directionSwitchState = 0;
 int previousDirectionSwitchState = 0;
 int motorEnabled = 0;
 int motorSpeed = 0;
 int motorDirection = 1;

void setup()
{
 pinMode(potPin, INPUT);
 pinMode(directionSwitchPin, INPUT);
 pinMode(onOffSwitchStatePin, INPUT);
 pinMode(onOffSwitchStateSwitchPin, INPUT);
 pinMode(controlPin1, OUTPUT);
 pinMode(controlPin2, OUTPUT);
 pinMode(enablePin, OUTPUT);
 digitalWrite(enablePin, LOW);
 Serial.begin(9600);
}
void loop()
{
  onOffSwitchState = digitalRead(onOffSwitchStateSwitchPin);
  delay (1);
  directionSwitchState = digitalRead(directionSwitchPin);
  motorSpeed= analogRead(potPin);
  motorSpeed = map(motorSpeed, 0, 1023, 0, 255);
  motorSpeed = constrain(motorSpeed, 0, 255);

  if (onOffSwitchStatePin != previousOnOffSwitchState)
  {
    if(onOffSwitchStatePin == HIGH)
     {
      motorEnabled = !motorEnabled;
     }
  }

  if(directionSwitchState != previousDirectionSwitchState)
  {
    if(directionSwitchState == HIGH)
    {
      motorDirection = !motorDirection;
    }
  }

  if(motorDirection == 1)
  {
    digitalWrite(controlPin1, HIGH);
    digitalWrite(controlPin2, LOW);
  }

  else
  {
    digitalWrite(controlPin1, LOW);
    digitalWrite(controlPin2, HIGH);
  }

  if(motorEnabled == 1)
  {
    analogWrite(enablePin, motorSpeed);
  }
  else
  {
    analogWrite(enablePin, 0);
  }
{
previousDirectionSwitchState = directionSwitchState;
previousOnOffSwitchState = onOffSwitchStatePin;
}
}