#define BLYNK_TEMPLATE_ID "TMPL6KQ9Y3lnz"
#define BLYNK_TEMPLATE_NAME "pt2"
#define BLYNK_AUTH_TOKEN "vIOU37H6FiLkJ9OZli_S20GcZhHiQWdt"
#define BLYNK_PRINT Serial

#include <WiFi.h>              // Include the WiFi library
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>  // Include the Blynk library for ESP32

// WiFi credentials
char ssid[] = "Wokwi-GUEST";   // Replace with your WiFi network name
char pass[] = "";              // Leave empty for open networks

bool isBlinking = false;       // Variable to check if LED should blink
unsigned long lastTime = 0;    // Stores the last time LED was toggled
int ledState = LOW;            // Keeps track of LED state (ON or OFF)

// This function runs when the button in the Blynk app is pressed
BLYNK_WRITE(V0) {
  int buttonState = param.asInt(); // Get the button value (1 for ON, 0 for OFF)

  if (buttonState == 1) {
    isBlinking = true;         // Start blinking when button is ON
    Serial.println("Blinking started");
  } else {
    isBlinking = false;        // Stop blinking when button is OFF
    digitalWrite(14, LOW);     // Turn off the LED immediately
    Serial.println("Blinking stopped");
  }
}

void setup() {
  pinMode(14, OUTPUT);         // Set pin as an OUTPUT for the LED
  Serial.begin(9600);          // Start serial communication at 9600 baud
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass); // Connect to Blynk using WiFi credentials
  Serial.println("Setup complete!");
}

void loop() {
  Blynk.run();                 // Keep Blynk running

  // Blink the LED if isBlinking is true
  if (isBlinking) {
    unsigned long currentTime = millis(); // Get the current time in milliseconds

    // Check if 1 second has passed
    if (currentTime - lastTime >= 500) {
      lastTime = currentTime; // Update the last time

      // Toggle the LED state
      if (ledState == LOW) {
        ledState = HIGH;
      } else {
        ledState = LOW;
      }

      digitalWrite(14, ledState); // Apply the new LED state
      Serial.println(ledState == HIGH ? "LED ON" : "LED OFF");
    }
  }
}