#define BLYNK_TEMPLATE_ID "TMPLOCRXh0T1"
#define BLYNK_TEMPLATE_NAME "TESTING"
#define BLYNK_AUTH_TOKEN "4SNtY61KC-K8G3IZfZyWWKpG3zy_3Z-l"

#define BLYNK_AUTH "4SNtY61KC-K8G3IZfZyWWKpG3zy_3Z-l"
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""

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

// Pin for the LED
int ledPin = 2;

// Pin for the physical button
int buttonPin = 4;

// Variable to store LED state
int ledState = LOW;

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Connect to Wi-Fi
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected to Wi-Fi");

  // Configure Blynk
  Blynk.config(BLYNK_AUTH_TOKEN);

  // Set LED pin as OUTPUT
  pinMode(ledPin, OUTPUT);

  // Set button pin as INPUT
  pinMode(buttonPin, INPUT_PULLUP);
}

void loop() {
  // Run Blynk client
  Blynk.run();
  Connection();

}

// Blynk function to control LED state
BLYNK_WRITE(V1) {
  ledState = param.asInt();
  digitalWrite(ledPin, ledState);
}

void Connection(){
    // Check if connected to Blynk server
  if (Blynk.connected()) {
    // Control LED using Blynk app when online
    Blynk.virtualWrite(V1, ledState);
  }
  else {
    // Control LED using physical button when offline
    int buttonState = digitalRead(buttonPin);
    if (buttonState == LOW) {
      ledState = !ledState;
      digitalWrite(ledPin, ledState);
      delay(250); // Button debouncing delay
    }
  }
}