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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqttServer = "test.mosquitto.org";
const int mqttPort = 1883;

const int pinSound = 13; // Pino digital conectado ao sensor de som
const int pinLED = 12;   // Pino digital conectado ao LED
const char* topic = "palmas";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  pinMode(pinSound, INPUT);
  pinMode(pinLED, OUTPUT);
  Serial.begin(9600);

  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());

  client.setServer(mqttServer, mqttPort);
}

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

  int soundValue = digitalRead(pinSound);

  if (soundValue == HIGH) {
    digitalWrite(pinLED, HIGH);
    Serial.println("Palmas detectadas");
    client.publish(topic, "Palmas detectadas");
    delay(500);
  } else {
    digitalWrite(pinLED, LOW);
    Serial.println("Nenhuma palma detectada");
    client.publish(topic, "Nenhuma palma detectada");
    delay(500);
  }
}

void reconnect() {
  while (!client.connected()) {
    Serial.println("Attempting MQTT connection...");
    String clientId = "ESP32Client-";
    clientId += String(random(0xffff), HEX);
    if (client.connect(clientId.c_str())) {
      Serial.println("Connected to MQTT broker");
    } else {
      Serial.print("Failed, rc=");
      Serial.print(client.state());
      Serial.println(" Retry in 5 seconds");
      delay(5000);
    }
  }
}