const int limitSwitch1Pin = 2;  // Pin for the first limit switch
const int limitSwitch2Pin = 3;  // Pin for the second limit switch
const int pushButtonPin = 4;     // Pin for the push button
const int relay1Pin = 5;         // Pin for the first relay
const int relay2Pin = 6;         // Pin for the second relay

bool pistonDirection = false;    // false for "to" motion, true for "fro" motion
bool buttonPressed = false;

void setup() {
  pinMode(limitSwitch1Pin, INPUT_PULLUP);
  pinMode(limitSwitch2Pin, INPUT_PULLUP);
  pinMode(pushButtonPin, INPUT_PULLUP);
  pinMode(relay1Pin, OUTPUT);
  pinMode(relay2Pin, OUTPUT);
}

void loop() {
  // Read limit switches
  bool limit1Pressed = digitalRead(limitSwitch1Pin) == LOW;
  bool limit2Pressed = digitalRead(limitSwitch2Pin) == LOW;

  // Read push button
  buttonPressed = digitalRead(pushButtonPin) == LOW;

  // If the button is pressed, start the piston cycle
  if (buttonPressed) {
    // If neither limit switch is pressed, continue moving in the current direction
    if (!limit1Pressed && !limit2Pressed) {
      digitalWrite(relay1Pin, pistonDirection);  // Control relay 1
      digitalWrite(relay2Pin, !pistonDirection); // Control relay 2
    }
    // If the "to" limit switch is pressed, change direction to "fro"
    else if (limit2Pressed) {
      pistonDirection = true;
      digitalWrite(relay1Pin, pistonDirection);
      digitalWrite(relay2Pin, !pistonDirection);
    }
    // If the "fro" limit switch is pressed, change direction to "to"
    else if (limit1Pressed) {
      pistonDirection = false;
      digitalWrite(relay1Pin, pistonDirection);
      digitalWrite(relay2Pin, !pistonDirection);
    }
  }
  // If the button is not pressed, stop the piston
  else {
    digitalWrite(relay1Pin, LOW);
    digitalWrite(relay2Pin, LOW);
  }
}