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

// Substitua pelas suas credenciais Wi-Fi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Configuração do broker MQTT
const char* mqtt_server = "test.mosquitto.org";
const char* mqtt_topic = "topicoPhotoresistor";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  pinMode(34, INPUT); // Pino analógico para LDR

  // Conexão Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Conectando ao WiFi...");
  }
  Serial.println("Conectado ao WiFi");

  // Conexão ao broker MQTT
  client.setServer(mqtt_server, 1883);
}

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

  int ldrValue = analogRead(34);
  Serial.println(ldrValue);

  // Publicar o valor do LDR no tópico
  char payload[50];
  snprintf(payload, sizeof(payload), "{\"ldr\": %d}", ldrValue);
  client.publish(mqtt_topic, payload);

  delay(1000); // Aumentar o delay para 1 segundo
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("Tentando conexão MQTT...");
    if (client.connect("ESP32Client")) {
      Serial.println("conectado");
    } else {
      Serial.print("Falha com erro: ");
      Serial.print(client.state());
      delay(2000);
    }
  }
}