#define BLYNK_TEMPLATE_ID "TMPL3XcDNA1Ih"
#define BLYNK_TEMPLATE_NAME "soil"
#define BLYNK_AUTH_TOKEN "rNnrTGTf6JLPoFY9b0WsVZiYdV16K8cP"

#include <Wire.h>
#include <BlynkSimpleEsp32.h>  // Include Blynk library
#include <DHT.h>               // Include DHT sensor library

char auth[] = "rNnrTGTf6JLPoFY9b0WsVZiYdV16K8cP";
char ssid[] = "Wokwi-GUEST";
char pass[] = ""; // Enter your Wi-Fi password

#define DHTPIN 25       // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22   // DHT 22 (AM2302)

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Wire.begin(23, 22);
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);  // Initialize Blynk with Wi-Fi credentials
  dht.begin();
}

void loop() {
  float humidity = dht.readHumidity();    // Read humidity value from the sensor
  float temperature = dht.readTemperature(); // Read temperature value from the sensor

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Send temperature and humidity data to Blynk virtual pins V0 and V1
  Blynk.virtualWrite(V0, temperature);  // Temperature to V0
  Blynk.virtualWrite(V2, humidity);      // Humidity to V1

  // Determine soil moisture status
  String soilStatus = "";
  int16_t soilMoisture = analogRead(34);
  if (soilMoisture < 2165) {
    soilStatus = "WET";
  } else if (soilMoisture > 3135) {
    soilStatus = "DRY";
  } else {
    soilStatus = "OK";
  }

  // Send soil moisture status to Blynk virtual pin V2
  Blynk.virtualWrite(V1, soilStatus);

  Blynk.run();  // Run Blynk
  delay(500);
}