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

// Credenciais para acesso a rede e ao MQTT mosquitto

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

WiFiClient WOKWI_Client;
PubSubClient client(WOKWI_Client);




void setup_wifi() {

  delay(10);
  // We start by connecting to a WiFi network
  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 until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    
    // Attempt to connect
    if (client.connect("WOKWI_Client")) {
      Serial.println("connected");
      
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}

void setup() {
  pinMode(2, OUTPUT); 
  pinMode(15, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
}

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

void Conectado_MQTT(){
  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_MQTT();
    Publica_dados();
 
}