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

// Credenciais para acesso à rede e ao MQTT broker
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.hivemq.com"; 



WiFiClient WOKWI_client;
PubSubClient client(WOKWI_client);

void setup_wifi() {

  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

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

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void reconnect() {
  // Loop até que esteja reconectado
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
   
    if (client.connect("WOKWI_client")) {
      Serial.println("connected");
     
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Aguarda 5 segundos antes de tentar novamente
      delay(5000);
    }
  }
}

void setup() {
  pinMode(2, OUTPUT);  
  pinMode(15, OUTPUT);  
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  //client.setCallback(callback);
}

void Conectado_Wifi(){
  if (WiFi.status() == WL_CONNECTED)
    digitalWrite(2, HIGH);
  else
    digitalWrite(2, LOW);
}

void Conectado_Mosquito(){
  if (client.connected())
    digitalWrite(15, HIGH);
  else
    digitalWrite(15, LOW);
}

void Publica_Dados(){
  int Valor_Pot;
  Valor_Pot = analogRead(34);
  client.publish("TOPICO_WOKWI", String(Valor_Pot).c_str());
  delay(1000);
}

void loop() {
  reconnect();
  Conectado_Wifi();
  Conectado_Mosquito();
  Publica_Dados();
}