/*

*/

#define BLYNK_TEMPLATE_ID "TMPL37zKTQnZA"
#define BLYNK_TEMPLATE_NAME "Research Project"
#define BLYNK_AUTH_TOKEN "aCyN_Kf1Uq8o0mi551260Q10OA1Ilp3p"

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

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



#define LED_PIN 2                           // GPIO5 for LED
#define DHT_PIN 4                           // GPIO4 for DHT11 sensor
#define DHT_TYPE DHT11                      // Define sensor type as DHT11


#define BUTTON_PIN             V1
#define LED_STATUS_PIN         V2
#define TEMP_PIN               V3
#define HUMIDITY_PIN           V4

// Initialize DHT sensor
DHT dht(DHT_PIN, DHT_TYPE);

// Variable to store LED state
bool ledState;

void setup() 
{

  Serial.begin(115200);

  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW); 

  dht.begin();

  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) 
  {
    Serial.println("Connecting to WiFi...");
    delay(1000);
  }
  Serial.println("Connected to WiFi");
  
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
}

BLYNK_WRITE(BUTTON_PIN) {
  ledState = param.asInt(); 
  
  if (ledState == 1) 
  {
    digitalWrite(LED_PIN, HIGH); // Turn the LED on
    Blynk.virtualWrite(LED_STATUS_PIN, 255);  // Turn on the LED widget in the Blynk app
  } 
  else 
  {
    digitalWrite(LED_PIN, LOW); 
    Blynk.virtualWrite(LED_STATUS_PIN, 0);
  }
}

void loop() 
{
  
  Blynk.run();


  float temperature = dht.readTemperature();                // Read temperature in Celsius
  float humidity = dht.readHumidity();                      // Read humidity percentage


  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(TEMP_PIN, temperature);
  Blynk.virtualWrite(HUMIDITY_PIN, humidity);

  delay(1000); 
}