#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

#include "DHTesp.h"

const int DHT_PIN = 13;

DHTesp dhtSensor;

#include <WiFi.h>

#include <PubSubClient.h>

WiFiClient espClient;
PubSubClient mqtt(espClient);

void connect_mqtt() {
  // Loop until we're reconnected
  while (!mqtt.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (mqtt.connect(clientId.c_str())) {
      Serial.println("Connected");
      // Once connected, publish an announcement...
      mqtt.publish("/mbkm/ilhamjul", "Connected");      
    } else {
      Serial.print("failed, rc=");
      Serial.print(mqtt.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

      lcd.init();
      lcd.backlight();

      lcd.setCursor(2,0);
      lcd.print("Hallo, jul");
      

      dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  mqtt.setServer("test.mosquitto.org", 1883);
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  // Menampilkan suhu di layar LCD
  lcd.setCursor(0, 1);  // Posisi baris kedua (indeks 1)
  lcd.print("Temp: " + String(data.temperature, 2) + "C");

  // Menampilkan kelembaban di layar LCD
  lcd.setCursor(0, 0);  // Posisi baris pertama (indeks 0)
  lcd.print("Humidity: " + String(data.humidity, 1) + "%");

  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  char temp[10] = {0};
  char humid[10] = {0};

  connect_mqtt(); 

  sprintf(temp, "%.2fC", data.temperature);
  mqtt.publish("/mbkm/ilhamjul", temp);
  sprintf(humid, "%.2f", data.humidity);
  mqtt.publish("/mbkm/ilhamjul", humid);

  Serial.println("---");
  delay(2000);
}