motor reverse code working

unsigned long currentMillis;
unsigned long previousMillis;
unsigned long previous2Millis;
const long onInterval = 10000;
const long offInterval = 20000;
const byte in1 = 10;
const byte in2 = 11;
const byte sw1 = 7;  //this is left switch
const byte sw2 = 5;  //this is right switch
boolean sw1Status;
boolean sw2Status;
int stateMachine;

void setup() {
  // put your setup code here, to run once:
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(sw1, INPUT_PULLUP);
  pinMode(sw2, INPUT_PULLUP);
  Serial.begin(9600);


}

void loop() {

  currentMillis = millis();
  sw1Status = digitalRead(sw1);
  sw2Status = digitalRead(sw2);
  switch (stateMachine) {
    case 0:
    digitalWrite(in1, LOW);
    digitalWrite(in2, LOW);
    if(sw1Status == HIGH && sw2Status == LOW)
    {
      Serial.println("Just chose case 2 from case 0");
      delay(5000);              //waiting before going to the next command
      stateMachine = 2;
    } else if (sw1Status == LOW && sw2Status == HIGH) {
      delay(5000);
      stateMachine = 1;
    }
    break;

    case 1:
    if(sw2Status == HIGH) {
        digitalWrite(in1, HIGH);
        digitalWrite(in2, LOW);
    } else if (sw2Status == LOW) {
      stateMachine = 0;  // go to reset
    }
    break;

    case 2:
    if(sw1Status == HIGH) {
      digitalWrite(in1, LOW);
      digitalWrite(in2, HIGH);
    } else if (sw1Status == LOW) {
      stateMachine = 0;
    }
    break;


  }
  }