#define BLYNK_TEMPLATE_ID "TMPL6F07GICu6"
#define BLYNK_TEMPLATE_NAME "Tugas ELIN"
#define BLYNK_AUTH_TOKEN "Sph_lpop7E0qG_WOppoLSfLJUs0XOTnu"

#define BLYNK_PRINT Serial

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

#define DHTPIN 15  // Pin tempat Anda menghubungkan output sensor DHT22
#define DHTTYPE DHT22
char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "Wokwi-GUEST"; //nama hotspot yang digunakan
char pass[] = ""; //password hotspot yang digunakan
DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Alamat I2C LCD dan jumlah kolom dan baris

#define RELAY_PIN_1 5  // Pin untuk Relay 1
#define RELAY_PIN_2 25 // Pin untuk Relay 2
BlynkTimer timer;

void setup() {
  Serial.begin(9600);
  dht.begin();
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(2500L, sendSensor);
  lcd.init();  // Inisialisasi LCD
  lcd.backlight();

  displayWelcomeScreen();
  pinMode(RELAY_PIN_1, OUTPUT);
  pinMode(RELAY_PIN_2, OUTPUT);
}

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

void sendSensor() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
  if (isnan(humidity) || isnan(temperature)) 
    return;

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

  displayTemperature(temperature);
  controlRelays(temperature);
}

void displayWelcomeScreen() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("DIOFANI ALBIR");
  lcd.setCursor(0, 1);
  lcd.print("211910201006");
  delay(2000);
}

void displayTemperature(float temperature) {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(temperature);
  lcd.print(" C");
  delay(2000);
}

void controlRelays(float temperature) {
  if (temperature < 32.0) {
    lcd.clear();
    digitalWrite(RELAY_PIN_1, HIGH);  // Menyalakan Relay 1 (lampu pemanas) 
    lcd.setCursor(0, 1);
    lcd.print("PEMANAS MENYALA");
  } else {
    digitalWrite(RELAY_PIN_1, LOW);  // Mematikan Relay 1 (lampu pemanas)
    delay(3000);
  }

  if (temperature > 35.0) {
    lcd.clear(); 
    digitalWrite(RELAY_PIN_2, HIGH);  // Menyalakan Relay 2 (kipas pendingin)
    lcd.setCursor(0, 1);
    lcd.print("KIPAS MENYALA");
  } else {
    digitalWrite(RELAY_PIN_2, LOW);  // Mematikan Relay 2 (kipas pendingin)
    delay(3000);
  }
}