#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <PubSubClient.h>

const int OneWireBus = 4;

float temperaturaC, temperaturaF;

OneWire oneWire(OneWireBus);

DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27,16,2);

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "test.mosquitto.org";

WiFiClient ClienteWokwi;
PubSubClient client(ClienteWokwi);

void reconnect(){
  while (!client.connected()){
    Serial.print("Estabelecendo conecxao MQTT ...");
    if (client.connected("ClienteWokwi")) 
    {
      Serial.print("Conectado");
    }
      else{
        Serial.print("Failed, rc= ");
        Serial.print(client.state());
        Serial.println(" Tentando novamente em 5 segundos");
        delay(5000);
      }
  }
}

void publica_dados(){
  client.publish("ESP32-Will",String(temperaturaC).c_str());
  delay(1000);
  
}

void setup() {

  Serial.begin(115200);
  sensors.begin();
  lcd.init();
  lcd.backlight();
  Serial.print("Conectando...");
  Serial.print(ssid);
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password,6);
  while (WiFi.status() != WL_CONNECTED){
    delay(500);
    Serial.print(".");
  }
  Serial.println("Wifi Conectado!!");
  Serial.println("Endereço de IP: ");
  Serial.println(WiFi.localIP());
  client.setServer(mqtt_server, 1883);
}
void loop() {
  sensors.requestTemperatures();
  temperaturaC = sensors.getTempCByIndex(0);
  temperaturaF = sensors.getTempFByIndex(0);
  Serial.print(temperaturaC);
  Serial.println("°C");
  Serial.print(temperaturaC);
  Serial.println("°C");
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(temperaturaC);
  lcd.print((char) 223);
  lcd.print("C");
  lcd.setCursor(0,1);
  lcd.print(temperaturaF);
  lcd.print((char) 223);
  lcd.print("F");
  if(!client.connected()) {
    reconnect();
  }
  publica_dados();
  delay(5000);
}