// #
// Nama  : Isma Tania Rahmawati
// NIM   : 3.34.22.2.09
// Kelas : IK-2C
// #

#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>
#include <PubSubClient.h>
#include <WiFi.h>

#define DHT_PIN 17 //berada di pin 17
DHTesp dhtSensor;
LiquidCrystal_I2C lcd(0x27, 20, 4);
WiFiClient espClient;
PubSubClient client(espClient);

const char* mqtt_server = "iotpintar.net";//mqtt
const int mqtt_port = 1883;
const char* mqtt_user = "";
const char* mqtt_password = "";

const char* ssid = "Wokwi-GUEST";//untuk wifi
    
float temperature;
float humidity;

void setup() {
  Serial.begin(115200);

  setup_wifi();
  client.setServer(mqtt_server, 1883);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  temperature = data.temperature;
  humidity = data.humidity;

  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print("Kelembapan : ");
  lcd.print(humidity);
  lcd.println(" %");

  lcd.setCursor(3, 2);
  lcd.print("Suhu : ");
  lcd.print(temperature);
  lcd.println(" C");

  // Kirim data ke dalam MQTT
  char* topik_kelembapan = "polines/ik/33422209/RH";
  client.publish(topik_kelembapan, String(humidity).c_str());  
  
  char* topik_suhu = "polines/ik/33422209/RT";
  client.publish(topik_suhu, String(temperature).c_str());

  delay(3000);
}

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Sedang Menghubungkan Ke Dalam ");
  Serial.println(ssid);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println(".");
  }

  Serial.println("");
  Serial.println("Selamat, WiFi berhasil terhubung!");
  Serial.print("Alamat IP : ");
  Serial.println(WiFi.localIP());
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Mencoba terhubung ke dalam server MQTT");
    if (client.connect("ESP32Client", mqtt_user, mqtt_password)) {
      Serial.println("   Selamat!");
      Serial.println("Anda Telah Terhubung ke server MQTT");
    }
    else {
      Serial.print("Gagal, kode status = ");
      Serial.print(client.state());
      Serial.println("Maaf, Silahkan Mencoba kembali dalam 5 detik");
      delay(5000);//delay 5 detik
    }
  }
}