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

char clientID[50];
WiFiClient espClient;
PubSubClient client(espClient);

static char strDetection[10] = {0};
int pir;

void setup() {
  WiFi.mode(WIFI_STA);
  WiFi.begin("Wokwi-GUEST", "");
  client.setServer("broker.emqx.io", 1883);

  pir = 4;
  pinMode(pir, INPUT);
  Serial.begin(9600);
}

void mqttReconnect() {
  while (!client.connected()) {
    Serial.println("Attempting MQTT connection...");
    if (client.connect(clientID)) {
      Serial.println("Connected!");
    } else {
      Serial.print("Failed, client state=");
      Serial.print(client.state());
      Serial.println(", trying again in 5 seconds");
      delay(5000);
    }
  }
}

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

  int value_of_pir = digitalRead(pir);
  Serial.println(value_of_pir);

  sprintf(strDetection, "%d", value_of_pir);
  client.publish("topicName/pir", strDetection);
}