const int PirPin = 19;  // Switch 1 GPIO pin
bool pirState = LOW;     // we start, assuming no motion detected
int pirval = 0;            // variable for reading the pin status

const int buttonPin1 = 2;  // Switch 1 GPIO pin
const int buttonPin2 = 3;  // Switch 2 GPIO pin
const int buttonPin3 = 4;  // Switch 3 GPIO pin

const int relayPin1 = 6;  // Relay 1 control GPIO pin
const int relayPin2 = 7;  // Relay 2 control GPIO pin
const int relayPin3 = 8;  // Relay 3 control GPIO pin

bool relayState1 = LOW;    // Initial state for Relay 1 (OFF)
bool relayState2 = LOW;    // Initial state for Relay 2 (OFF)
bool relayState3 = LOW;    // Initial state for Relay 3 (OFF)

bool buttonState1 = HIGH;
bool buttonState2 = HIGH;
bool buttonState3 = HIGH;
bool lastButtonState1 = HIGH;
bool lastButtonState2 = HIGH;
bool lastButtonState3 = HIGH;

unsigned long lastDebounceTime1 = 0;
unsigned long lastDebounceTime2 = 0;
unsigned long lastDebounceTime3 = 0;

unsigned long debounceDelay = 50;

void setup() {
  pinMode(PirPin, INPUT);     // declare Pir sensor as input

  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);

  pinMode(relayPin1, OUTPUT);
  pinMode(relayPin2, OUTPUT);
  pinMode(relayPin3, OUTPUT);

  digitalWrite(relayPin1, relayState1);
  digitalWrite(relayPin2, relayState2);
  digitalWrite(relayPin3, relayState3);

  Serial.begin(115200);
  Serial.println("3 Switches and 3 Relays Example");
}

void loop() {
  int pirReading = digitalRead(PirPin);

  if (pirReading == HIGH) {
    // PIR sensor detected motion
    if (relayState1 == LOW) {
      relayState1 = HIGH;  // Turn on relay1
      digitalWrite(relayPin1, relayState1);
      Serial.println("Motion Detected - Relay 1 ON");
    }
  } else {
    if (relayState1 == HIGH) {
      relayState1 = LOW;   // Turn off relay1
      digitalWrite(relayPin1, relayState1);
      Serial.println("No Motion - Relay 1 OFF");
    }
  }

  int buttonReading1 = digitalRead(buttonPin1);
  int buttonReading2 = digitalRead(buttonPin2);
  int buttonReading3 = digitalRead(buttonPin3);

  // Button 1 debouncing
  if (buttonReading1 != lastButtonState1) {
    lastDebounceTime1 = millis();
  }

  if ((millis() - lastDebounceTime1) > debounceDelay) {
    if (buttonReading1 != buttonState1) {
      buttonState1 = buttonReading1;
      if (buttonReading1 == LOW) {
        relayState1 = !relayState1;
        digitalWrite(relayPin1, relayState1);

        if (relayState1 == HIGH) {
          Serial.println("Switch 1 Pressed - Relay 1 ON");
        } else {
          Serial.println("Switch 1 Pressed - Relay 1 OFF");
        }
      }
    }
  }
  lastButtonState1 = buttonReading1;

  // Button 2 debouncing
  if (buttonReading2 != lastButtonState2) {
    lastDebounceTime2 = millis();
  }

  if ((millis() - lastDebounceTime2) > debounceDelay) {
    if (buttonReading2 != buttonState2) {
      buttonState2 = buttonReading2;
      if (buttonReading2 == LOW) {
        relayState2 = !relayState2;
        digitalWrite(relayPin2, relayState2);

        if (relayState2 == HIGH) {
          Serial.println("Switch 2 Pressed - Relay 2 ON");
        } else {
          Serial.println("Switch 2 Pressed - Relay 2 OFF");
        }
      }
    }
  }
  lastButtonState2 = buttonReading2;

  // Button 3 debouncing
  if (buttonReading3 != lastButtonState3) {
    lastDebounceTime3 = millis();
  }

  if ((millis() - lastDebounceTime3) > debounceDelay) {
    if (buttonReading3 != buttonState3) {
      buttonState3 = buttonReading3;
      if (buttonReading3 == LOW) {
        relayState3 = !relayState3;
        digitalWrite(relayPin3, relayState3);

        if (relayState3 == HIGH) {
          Serial.println("Switch 3 Pressed - Relay 3 ON");
        } else {
          Serial.println("Switch 3 Pressed - Relay 3 OFF");
        }
      }
    }
  }
  lastButtonState3 = buttonReading3;

  // You can add other code here

  // Optional: Add a delay or other code as needed.
}