#define BLYNK_TEMPLATE_ID "TMPL6AkKQH62x"
#define BLYNK_TEMPLATE_NAME "Mini projects"
#define BLYNK_AUTH_TOKEN "qwefLc6PiOcbVA22PJ5Re6RIpREWeach"

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

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "your-SSID";
char pass[] = "your-PASSWORD";

#define DHTPIN 7        // Pin for DHT22
#define DHTTYPE DHT22   // DHT 22 (AM2302)
#define PIR_PIN 2       // Pin for PIR sensor
#define TRIG_PIN 9      // Pin for Ultrasonic sensor
#define ECHO_PIN 8      // Pin for Ultrasonic sensor
#define LED_PIN 4       // Pin for LED
#define BUZZER_PIN 5    // Pin for Buzzer

#define PIN_V1 V1
#define PIN_V2 V2

DHT dht(DHTPIN, DHTTYPE);
Servo myServo;

BlynkTimer timer;

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

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  dht.begin();
  myServo.attach(3);
  pinMode(PIR_PIN, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  timer.setInterval(2000L, sendSensorData);
}

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

void sendSensorData() {
  readDHTSensor();
  handleMotion();
  controlServo();
}

void readDHTSensor() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (!isnan(humidity) && !isnan(temperature)) {
    Serial.print("Humidity: ");
    Serial.print(humidity);
    Serial.print(" %\t");
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println(" *C");

    Blynk.virtualWrite(PIN_V1, temperature);
    Blynk.virtualWrite(PIN_V2, humidity);
  } else {
    Serial.println("Failed to read from DHT sensor!");
  }
}

void handleMotion() {
  int motionDetected = digitalRead(PIR_PIN);
  if (motionDetected == HIGH) {
    Serial.println("Motion detected!");
    digitalWrite(LED_PIN, HIGH); // Turn on LED
    digitalWrite(BUZZER_PIN, HIGH); // Turn on Buzzer
  } else {
    digitalWrite(LED_PIN, LOW); // Turn off LED
    digitalWrite(BUZZER_PIN, LOW); // Turn off Buzzer
  }
}

void controlServo() {
  int motionDetected = digitalRead(PIR_PIN);
  if (motionDetected == HIGH) {
    myServo.write(90); // Move to 90 degrees
  } else {
    myServo.write(0); // Move to 0 degrees
  }
}