const int greenLedPin = 13;
const int redLedPin = 12;
const int buttonPin = 7;
#include <Servo.h>

Servo myServo;

int buttonState = 0;
int lastButtonState = HIGH;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;
int targetPos = 90;

void setup() {
  pinMode(greenLedPin, OUTPUT);
  pinMode(redLedPin, OUTPUT);
  myServo.attach(9);
  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  // Sweep the servo from 0 to 180 degrees
  for (int pos = 0; pos <= 180; pos++) {
    myServo.write(pos);
    delay(15);
  }

  // Sweep the servo back from 180 to 0 degrees
  for (int pos = 180; pos >= 0; pos--) {
    myServo.write(pos);
    delay(15);
  }

  // Check button state with debounce
  int reading = digitalRead(buttonPin);
  if (reading != lastButtonState) {
    lastDebounceTime = millis();  // Reset debounce timer
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != buttonState) {
      buttonState = reading;

      if (buttonState == LOW) {  // Button pressed
        if (myServo.read() == targetPos) {
          digitalWrite(greenLedPin, HIGH);  // Success: Servo is at 90 degrees
          delay(1000);  // Keep LED on for 1 second
          digitalWrite(greenLedPin, LOW);
        } else {
          digitalWrite(redLedPin, HIGH);  // Failure: Servo is not at 90 degrees
          delay(1000);  // Keep LED on for 1 second
          digitalWrite(redLedPin, LOW);
        }
      }
    }
  }

  lastButtonState = reading;  // Save the last button state
}