const int dirPin = 2;  //to driver
const int stepPin = 3; //to driver
const int enablePin = 4; //to driver
const int LED_OPEN = 7;
const int LED_CLOSED = 6;
const int OPENSW = 8;
const int CLOSEDSW = 9;
const int initiateSwitch = 10; //to expand/retract button

const int STEPS_PER_REV = 2000;
const int OPEN_TIME = 10000;
const int CLOSE_TIME = 20000;

int initiateSwitchState = 0;
int previousinitiateSwitchState = 0;
int dirPinState = HIGH;
int previousdirPinState = LOW;
int OPENSWState = 0;
int CLOSEDSWState = 0;
int LED_OPEN_State = LOW;
int LED_CLOSED_State = LOW;

void setup() {
  digitalWrite (LED_OPEN,LOW);
  digitalWrite (LED_CLOSED,LOW);
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  pinMode(enablePin, OUTPUT);
  pinMode(LED_OPEN, OUTPUT);
  pinMode(LED_CLOSED, OUTPUT);
  pinMode(CLOSEDSW, INPUT_PULLUP);
  pinMode(OPENSW, INPUT_PULLUP);
  pinMode(initiateSwitch, INPUT);  //signal motor start w/ opposite direction
  Serial.begin(9600);
}

void loop() {
  LED_OPEN_State = digitalRead(LED_OPEN);
  LED_CLOSED_State = digitalRead(LED_CLOSED);
  OPENSWState = digitalRead(OPENSW);
  CLOSEDSWState = digitalRead(CLOSEDSW);
  initiateSwitchState = digitalRead(initiateSwitch); //signals the action
  delay(1);

  if (initiateSwitchState != previousinitiateSwitchState){     //reads limit switch states to decide which direction to turn
    if (initiateSwitchState == HIGH ){       //should this be "HIGH" or "1"?
      if (dirPinState != previousdirPinState && CLOSEDSWState == 0){
         digitalWrite(dirPin, HIGH);
         previousdirPinState = digitalRead(dirPin);
              for(int x = 0; x < STEPS_PER_REV; x++){ //STEPS_PER_REV*2 = 2 revolutions
              digitalWrite(stepPin, HIGH);
              delayMicroseconds(OPEN_TIME); //1000 = fast turn
              digitalWrite(stepPin, LOW);
              delayMicroseconds(OPEN_TIME); //1000 = fast turn
              digitalWrite(LED_OPEN, LOW);
              digitalWrite(LED_CLOSED, HIGH);
       }
      }
      if (dirPinState == previousdirPinState && OPENSWState == 0){
         digitalWrite(dirPin, LOW);
         previousdirPinState = digitalRead(dirPin);
         for(int x = 0; x < STEPS_PER_REV; x++){
         digitalWrite(stepPin, HIGH);
         delayMicroseconds(CLOSE_TIME);  //2000 = slow turn
         digitalWrite(stepPin, LOW);
         delayMicroseconds(CLOSE_TIME);  //2000 = slow turn
         digitalWrite(LED_OPEN, HIGH);
         digitalWrite(LED_CLOSED, LOW);
       }
      }
       else
       {

       }
  }
  Serial.print("initiateSwitchState: ");
  Serial.println(initiateSwitchState);
  Serial.print("Direction: ");
  Serial.println(previousdirPinState);
  }
  delay(50);
  previousinitiateSwitchState = initiateSwitchState;
}