#define BLYNK_TEMPLATE_ID "TMPL64m1rZf1P"
#define BLYNK_TEMPLATE_NAME "Sensor"
#define BLYNK_AUTH_TOKEN "iUfwYhcu2QxvAMm98iIMEHV8sy9zpdAg"

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

// Blynk Auth Token
char auth[] = BLYNK_AUTH_TOKEN;

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

// DHT Sensor
#define DHTPIN 4  // Pin connected to the data pin of DHT sensor
#define DHTTYPE DHT22  // DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);

// Relay pin for the pump
#define RELAY_PIN 5

BlynkTimer timer;

void sendSensorData() {
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

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

  // Print to serial monitor
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print("%  Temperature: ");
  Serial.print(t);
  Serial.println("°C");

  // Send to Blynk
  Blynk.virtualWrite(V5, h); // Virtual pin V5 for humidity
  Blynk.virtualWrite(V6, t); // Virtual pin V6 for temperature
}

BLYNK_WRITE(V1) {
  int pinValue = param.asInt();
  if (pinValue) {
    digitalWrite(RELAY_PIN, LOW);  // Turn on the pump (assuming active low relay)
    Serial.println("Pump ON");
  } else {
    digitalWrite(RELAY_PIN, HIGH);  // Turn off the pump
    Serial.println("Pump OFF");
  }
}

void setup() {
  // Debug console
  Serial.begin(115200);

  // Initialize the DHT sensor
  dht.begin();

  // Set relay pin as output
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, HIGH);  // Initial state is off

  // Connect to WiFi
  Blynk.begin(auth, ssid, pass);

  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensorData);
}

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