#define BLYNK_TEMPLATE_ID "TMPL65bKgx31F"
#define BLYNK_TEMPLATE_NAME "TempDHT"
#define BLYNK_AUTH_TOKEN "QsRHr5vm3-Xf6A5VFJqcOrlP-K6gAl6Q"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHTesp.h>
#include <ESP32Servo.h> // Library untuk ESP32 Servo
#include <LiquidCrystal_I2C.h> // Include LCD library

const int DHT_PIN = 15;
const int RELAY_PIN = 4; // Pin untuk relay
DHTesp dhtSensor;
Servo myServo; // Create servo object

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

// Initialize the LCD (I2C address 0x27, 16 columns and 2 rows)
LiquidCrystal_I2C lcd(0x27, 16, 2);

void sendSensor()
{
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  
  // Display on LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(data.temperature, 2) + "C");
  lcd.setCursor(0, 1);
  lcd.print("Hum: " + String(data.humidity, 1) + "%");

  Blynk.virtualWrite(V0, data.temperature);
  Blynk.virtualWrite(V1, data.humidity);
}

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  pinMode(RELAY_PIN, OUTPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  myServo.attach(14); // Attach servo to pin 14
  myServo.write(0); // Set initial servo position to 0 degrees
  timer.setInterval(1000, sendSensor);

  // Initialize the LCD
  lcd.init();
  lcd.backlight(); // Turn on the backlight
}

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

BLYNK_WRITE(V2)
{
  int pinValue = param.asInt();
  Serial.print("V2 Switch value is: ");
  Serial.println(pinValue);

  if (pinValue == 1) {
    myServo.write(90); // Move servo to 90 degrees when switch is on
    digitalWrite(RELAY_PIN, HIGH); // Turn on relay
  } else {
    myServo.write(0); // Move servo back to 0 degrees when switch is off
    digitalWrite(RELAY_PIN, LOW); // Turn off relay
  }
}