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

// WIFI
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// MQTT
const char* mqtt_server = "broker.hivemq.com";

WiFiClient espClient;
PubSubClient client(espClient);

DHT dht(15, DHT22);

void setup() {
  Serial1.begin(115200);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) delay(500);

  client.setServer(mqtt_server, 1883);
  dht.begin();
}

void loop() {
  if (!client.connected()) {
    while (!client.connected()) client.connect("ESP32Weather");
  }
  client.loop();

  float t = dht.readTemperature();
  float h = dht.readHumidity();

  char payload[80];
  sprintf(payload, "{\"temperature\": %.2f, \"humidity\": %.2f}", t, h);

  client.publish("weatherstation/data", payload);

  delay(5000);
}