#include <WiFi.h>
#include <DHT.h>
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <Arduino_MQTT_Client.h>
#include <ThingsBoard.h>

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""

#define TOKEN "6vv9U3zULl0ABbuEgSH2"
#define THINGSBOARD_SERVER "thingsboard.cloud"

uint16_t MAX_MESSAGE_SIZE = 128U;

WiFiClient espClient;

uint16_t THINGSBOARD_PORT = 1883U;

Arduino_MQTT_Client mqttClient(espClient);
ThingsBoard tb(mqttClient, MAX_MESSAGE_SIZE);
int statusWifi = WL_IDLE_STATUS;

#define DHTPIN 33
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define PIN_LED 23

LiquidCrystal_I2C lcd(0x27,16,2); 

void Wifi_Init() {
  Serial.println("Menghubungkan ke AP");
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}

void Reconnect_Wifi() {
  statusWifi = WiFi.status();
  if (statusWifi != WL_CONNECTED) {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  }
  Wifi_Init();
}

void setup() {
  Serial.begin(115200);
  Wifi_Init();
  dht.begin();
  pinMode (PIN_LED, OUTPUT);
  lcd.init(); 
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Monitoring suhu");
  lcd.setCursor(0,1);
  lcd.print(" Ruang Server ");
  delay (2000);
  lcd.clear();
  lcd.setCursor (0,0);
  lcd.print ("Helmi Misbakhul Umam | 2120501086");
  lcd.setCursor (0,1);
  lcd.print ("Muhammad Ilham Syafi | 2120501079");
  for (int i; i<= 20;i++)
  {
    lcd.scrollDisplayLeft();
    delay (250);
  }

}

void loop()
{
  delay(1000);
  lcd.clear();
  if (WiFi.status() != WL_CONNECTED) {
    Reconnect_Wifi();
  }
  if (!tb.connected()) {
    Serial.printf("Connecting to: (%s) with token (%s)\n", THINGSBOARD_SERVER, TOKEN);
    if (!tb.connect(THINGSBOARD_SERVER, TOKEN, THINGSBOARD_PORT)) {
      Serial.println("Failed to connect");
      return;
    }
  }

  float t = dht.readTemperature();

  Serial.print(F("Temperature: "));
  Serial.print(t);
  Serial.println(F("°C "));
  Serial.println(F("=========================="));

  tb.sendTelemetryData("Temperature", t);

  lcd.setCursor (0,0);
  lcd.print ("Suhu :");
  lcd.print (t);
  lcd.print ("C");


  if (t > 21.0)
  {
    digitalWrite(PIN_LED, HIGH);
    tb.sendTelemetryData("LED_State", 1); // Send attribute update to ThingsBoard
  }
  else
  {
    digitalWrite(PIN_LED, LOW);
    tb.sendTelemetryData("LED_State", 0); // Send attribute update to ThingsBoard
  }
}