#include <WiFi.h>
#include <PubSubCliente.h>

const char* ssid = "Woki-GUEST";
const char* senha = "";

const char * mqttServer = "mqtt-dashboard.com";
const int mqttPort = 1883;
const char* mqttClientID = "ESP32_Button_Client";
const char* mqttTopicPublish = "esp/32/button/press";

wifiClient espClient;]
PubSubClient mqttClient(espClient);

const int buttonPin = 4;
bool lastButtonState = HIGH;
bool buttonState = HIGH;
bool ledState = false;

void connectToWiFi() {
  Wifi.begin(ssid, senha);
  while (Wifi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print("-");
  }
  Serial.println(("\nWifi conectado! IP: " + Wifi.localIP().toString));
}

void connectToMQTT() {
  mqttClient.setServer(mqttServer, mqttPort);
  while (!mqttClient.connected()) {
    Serial.println("Conectado ao MQTT...");
    if (mqttClient.connect(mqttClientID)) {
      Serial.println("Conectado ao MQTT!");
    } else{
      Serial.println("Falha na conexão. Código de erro: ");
      Serial.println((mqttClient.state());
      delay(2000);
    }
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(buttonPin, INPUT_PULLUP);
  connectyToWifi();
  connectToMQTT();
}

void loop() {
  if (!mqttClient.connected()) {
    connectToMQTT();
  }
  mqttClient.loop();
  buttonState = digitalRead(buttonPin);
  if (lastButtonState == HIGH && buttonState == LOW) {
    // Alterar o estado do LED
    ledState = !ledState;
    if (ledState) {
      mqttClient.publish(mqttTopicPublish, "LED_ON");
      Serial.println("Botão pressionado . LED ON.");
    } else{
    mqttClient.publish(mqttTopicPublish, "LED_OFF");
    Serial.println("Botão pressionado. LED OFF.");  
    }
    delay(300);
  }
  lastButtonState = buttonState;