#define BLYNK_TEMPLATE_ID "TMPL6578V6ixr"
#define BLYNK_TEMPLATE_NAME "ESP32 DHT22 Lampu"
#define BLYNK_AUTH_TOKEN "P_SldhaWKaHY3lnhPLlnYYZGRlaqFgCK"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>

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

#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int ledBiru = 16;
const int ledKuning = 17;
const int ledMerah = 18;

BlynkTimer timer;

void sendSensor() {
  float suhu = dht.readTemperature();

  if (isnan(suhu)) {
    Serial.println("Gagal membaca DHT");
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Sensor Error");
    return;
  }

  Serial.print("Suhu: ");
  Serial.print(suhu);
  Serial.println(" °C");

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(suhu);
  lcd.print((char)223);
  lcd.print("C");

  Blynk.virtualWrite(V0, suhu);

  lcd.setCursor(0, 1);
  if (suhu < 20) {
    digitalWrite(ledBiru, HIGH);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledMerah, LOW);
    Blynk.virtualWrite(V1, 255);
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V3, 0);
    lcd.print("SUHU DINGIN     ");
  } else if (suhu >= 20 && suhu < 30) {
    digitalWrite(ledBiru, LOW);
    digitalWrite(ledKuning, HIGH);
    digitalWrite(ledMerah, LOW);
    Blynk.virtualWrite(V1, 0);
    Blynk.virtualWrite(V2, 255);
    Blynk.virtualWrite(V3, 0);
    lcd.print("SUHU NORMAL     ");
  } else {
    digitalWrite(ledBiru, LOW);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledMerah, HIGH);
    Blynk.virtualWrite(V1, 0);
    Blynk.virtualWrite(V2, 0);
    Blynk.virtualWrite(V3, 255);
    lcd.print("SUHU PANAS      ");
  }
}

void setup() {
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  dht.begin();
  Wire.begin(21, 22); // SDA, SCL untuk ESP32
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Inisialisasi...");

  pinMode(ledBiru, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledMerah, OUTPUT);

  timer.setInterval(2000L, sendSensor); // Interval sensor 2 detik
}

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