#define BLYNK_TEMPLATE_ID "TMPL3Yg0xV6Ai"
#define BLYNK_TEMPLATE_NAME "Temperature"
#define BLYNK_AUTH_TOKEN "tFSGlfB3wM9u50JyKz4DWSnc2d7A7hrk"
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#define BLYNK_PRINT Serial
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
char auth[] = BLYNK_AUTH_TOKEN;
#define BLYNK_PRINT Serial  

#include <Wire.h>
#include <BlynkSimpleEsp32.h> //You need to add it by searching "Blynk" in libraries and install it
#include <DHT.h> //You need to add it by searching "DHT sensor library" in libraries and install it

// DHT sensor settings and configuration
#define DHT_BLYNK_VPIN_TEMPERATURE V0 //Virtual pin on Blynk side
#define DHT_BLYNK_VPIN_HUMIDITY V1 //Virtual pin on Blynk side

#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// This function creates the timer object. It's part of Blynk library
BlynkTimer timer;

// DHT related variables
int   DHT_ENABLED = 0;
float DHT_HUMIDITY;
float DHT_HUMIDITY_IGNORED_DELTA = 0.01;
float DHT_TEMPERATURE;
float DHT_TEMPERATURE_IGNORED_DELTA = 0.01;
int RUN = 0;

// SETUP BLOCK

// DHT setup
void setupDht() {
  Serial.println("DHT startup!");
  dht.begin();
  DHT_ENABLED = 1;
}

// Sending data from DHT sensor to Blynk
void sendDhtData() {
  Serial.println("Sending DHT data");
  Blynk.virtualWrite(DHT_BLYNK_VPIN_TEMPERATURE, DHT_TEMPERATURE);
  Blynk.virtualWrite(DHT_BLYNK_VPIN_HUMIDITY, DHT_HUMIDITY);
}

// DATA PROCESSING BLOCK
// Reading DHT data
void readAndSendDhtData() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  // check if returns are valid, if they are NaN (not a number) then something went wrong!
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT");
  } else {
    float humidityDelta = abs(humidity - DHT_HUMIDITY) - DHT_HUMIDITY_IGNORED_DELTA;
    float temperatureDelta = abs(temperature - DHT_TEMPERATURE) - DHT_HUMIDITY_IGNORED_DELTA;
    if (humidityDelta > 0 || temperatureDelta > 0) {
      DHT_HUMIDITY = humidity;
      DHT_TEMPERATURE = temperature;
      Serial.printf("Humidity: %f%%. Temperature: %f*C.\n", humidity, temperature);
      sendDhtData();
    }
  }
}


void reandAndSendSensorsData() {
  readAndSendDhtData();
 Serial.println("Sending data from sensors");
}
BLYNK_CONNECTED()
{
   Blynk.syncVirtual(V0);
   Serial.println("Inside Blynk Connected");
   Blynk.syncVirtual(V1);
   Serial.println("Inside Blynk Connected");
}
void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V0, millis() / 1000);
  Blynk.virtualWrite(V1, millis() / 1000);
}
void setup()
{
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN,ssid,pass);
  setupDht();
  timer.setInterval(5000L, reandAndSendSensorsData);
}
void loop() {
  Blynk.run();
  timer.run();
}