#define BLYNK_TEMPLATE_ID "TMPL6mgffu1tv"
#define BLYNK_TEMPLATE_NAME "Smart Door Lock"
#define BLYNK_AUTH_TOKEN "KIhQ1ZyWaKd50DA0gsnLAm-Ip796nHnh"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <ESP32Servo.h>

// Blynk settings
char auth[] = BLYNK_AUTH_TOKEN;

// WiFi credentials
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Define servo settings
Servo myServo;
const int servoPin = 22;
const int unlockPosition = -90; // Set servo position to -90 degrees
const int lockPosition = 90;    // Set servo position to +90 degrees

// Define buzzer pin
const int buzzerPin = 21;

// Variables
bool locked = true;

// Blynk virtual pin handler
BLYNK_WRITE(V0) {
  int switchState = param.asInt();
  if (switchState == 1) { // Jika switch ON
    unlockDoor();
  } else { // Jika switch OFF
    lockDoor();
  }
}

void setup() {
  Serial.begin(9600);

  // Initialize Blynk
  Blynk.begin(auth, ssid, pass);

  // Initialize servo
  myServo.attach(servoPin);

  // Initialize buzzer
  pinMode(buzzerPin, OUTPUT);

  // Set initial lock state
  lockDoor();
}

void loop() {
  Blynk.run();
}

void unlockDoor() {
  locked = false;
  myServo.write(unlockPosition);
  Serial.println("Door Unlocked");
  Blynk.virtualWrite(V0, 1); // Update Blynk switch to ON
  playBuzzer(2);            // Buzzer berbunyi dua kali
}

void lockDoor() {
  locked = true;
  myServo.write(lockPosition);
  Serial.println("Door Locked");
  Blynk.virtualWrite(V0, 0); // Update Blynk switch to OFF
  playBuzzer(1);            // Buzzer berbunyi sekali
}

// Function to play buzzer sound
void playBuzzer(int times) {
  for (int i = 0; i < times; i++) {
    digitalWrite(buzzerPin, HIGH);
    delay(200); // Durasi bunyi 200 ms
    digitalWrite(buzzerPin, LOW);
    delay(200); // Jeda antar bunyi 200 ms
  }
}