#define BLYNK_TEMPLATE_ID "TMPL6Lc78xxMb"
#define BLYNK_TEMPLATE_NAME "Monitoring Suhu Menggunakan Sensor DHT22"
#define BLYNK_AUTH_TOKEN "rVg5GGyhjv_VifvlLnzAUu52N6sb7Hza"

#define BLYNK_PRINT Serial

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

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

#define DHTPIN 5
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;

#define RELAY_PIN 2
#define BUZZER_PIN 4

LiquidCrystal_I2C lcd(0x27, 16, 2);

CTBot bot;  // Inisialisasi objek CTBot
float previousTemperature = 0;
float previousHumidity = 0;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
  timer.setInterval(2500L, sendSensor);

  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
  lcd.init();
  lcd.backlight();

  // Inisialisasi bot Telegram
  bot.wifiConnect(ssid, pass);
  bot.setTelegramToken("6712572745:AAEKlsJkHEjQdJaiofJUEhzYCFkY_MlGNOo");
}

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

void sendSensor() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(V1, h);
  Blynk.virtualWrite(V0, t);
  Serial.print("Temperature : ");
  Serial.print(t);
  Serial.print("    Humidity : ");
  Serial.println(h);

  if (t < 37.0) {
    digitalWrite(RELAY_PIN, HIGH);
  } else {
    digitalWrite(RELAY_PIN, LOW);
  }

  if (t != previousTemperature || h != previousHumidity) {
    digitalWrite(BUZZER_PIN, HIGH);
    delay(100);
    digitalWrite(BUZZER_PIN, LOW);
    previousTemperature = t;
    previousHumidity = h;

    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Suhu: ");
    lcd.print(t);
    lcd.print(" C");
    lcd.setCursor(0, 1);
    lcd.print("Kelembaban: ");
    lcd.print(h);
    lcd.print("%");

    // Kirim data suhu dan kelembaban ke Telegram hanya saat ada perubahan
    String message = "Suhu: " + String(t) + "°C, Kelembaban: " + String(h) + "%";
    bot.sendMessage(1857347614, message);
  }
}