#define BLYNK_TEMPLATE_ID "TMPL6EyUDDg6W"
#define BLYNK_TEMPLATE_NAME "sensor  DHT"
#define BLYNK_AUTH_TOKEN "EBVLN6MuUMiCeKktqMtAdC2XlPkNhufN"

#define BLYNK_PRINT Serial

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

char auth[] = BLYNK_AUTH_TOKEN;

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

#define DHTPIN 5        // Pin for DHT22 sensor
#define DHTTYPE DHT22   // DHT22 sensor type
#define LED_PIN 2       // Pin for LED (change this if needed)

DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  
  dht.begin();
  
  pinMode(LED_PIN, OUTPUT);  // Set LED pin as output
  timer.setInterval(2500L, sendSensor);  // Call sendSensor() every 2.5 seconds
}

void loop() {
  Blynk.run();  // Run Blynk
  timer.run();  // Run timer
}

void sendSensor() {
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // Read temperature (in Celsius)
  
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(V1, h);  // Send humidity to Blynk
  Blynk.virtualWrite(V0, t);  // Send temperature to Blynk

  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print("°C    Humidity: ");
  Serial.println(h);

  
  if (t > 35) {
    digitalWrite(LED_PIN, HIGH);  
  } else {
    digitalWrite(LED_PIN, LOW);   
  }

  if (t > 30) {
    Blynk.logEvent("temp_alert", "Temperature above 30 degrees");
  }
}