#include <ezButton.h>

#define BUTTON_PIN 22  // ESP32 pin GPIO22 connected to button's pin
#define RELAY_PIN  27  // ESP32 pin GPIO27 connected to relay's pin

ezButton button(BUTTON_PIN);  // create ezButton object that attach to pin 22;

// variables will change
int relay_state = LOW;  // the current state of the relay

void setup() {
  Serial.begin(115200);
  pinMode(RELAY_PIN, OUTPUT); // set Relay pin to output mode
  button.setDebounceTime(50); // set debounce time to 50 milliseconds
}

void loop() {
  button.loop(); // MUST call loop() function first
  
  if (button.isPressed()) {
    Serial.println("The button is pressed");

    relay_state = !relay_state; // Toggle the state of relay

    digitalWrite(RELAY_PIN, relay_state);
  }
}