#include <ESP32Servo.h>

const int servoPin = 18; // Adjust this to your servo pin
const int valveOpenAngle = 90; // Angle for open position
const int valveClosedAngle = 0; // Angle for closed position (reversed for your request)
const int buttonPin = 13; // Push button pin

Servo servo;
bool servoActive = false; // Flag to indicate if servo is active
unsigned long previousMillis = 0; // Variable to store the previous time

void setup() {
  servo.attach(servoPin);
  pinMode(buttonPin, INPUT_PULLUP); // Set button pin as input with internal pull-up resistor
  Serial.begin(115200); // Open serial communication if desired
}

void loop() {
  unsigned long currentMillis = millis();

  // Check if the button is pressed to toggle servo activity
  if (digitalRead(buttonPin) == LOW) {
    servoActive = !servoActive;
    delay(250); // Debouncing delay
  }

  // If servo is active, move it every 1 second
  if (servoActive && currentMillis - previousMillis >= 1000) {
    previousMillis = currentMillis; // Update previous time
    servo.write(valveOpenAngle); // Move servo to open position
    Serial.println("Valve opened");
    delay(500); // Adjust delay for servo to reach position
    servo.write(valveClosedAngle); // Move servo to closed position
    Serial.println("Valve closed");
  }

  // Clear serial buffer for next command
  Serial.flush();
}