#include <WiFi.h>
#include "PubSubClient.h"
#include<DHT.h>
#define DHTPIN 15
#define DHTTYPE  DHT22

DHT dht(DHTPIN,DHTTYPE);
const char * MQTTServer = "broker.emqx.io";
const char * MQTT_Topic = "CHUYU/VLUTE";

// Tạo ID ngẫu nhiên tại: https://www.guidgen.com/
const char * MQTT_ID = "";
int Port = 1883;

WiFiClient espClient;
PubSubClient client(espClient);

void WIFIConnect() {
  Serial.println("Connecting to SSID: Wokwi-GUEST");
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("WiFi connected");
  Serial.print(", IP address: ");
  Serial.println(WiFi.localIP());
}

void MQTT_Reconnect() {
  while (!client.connected()) {
    if (client.connect(MQTT_ID)) {
      Serial.print("MQTT Topic: ");
      Serial.print(MQTT_Topic);
      Serial.print(" connected");
      client.subscribe(MQTT_Topic);
      Serial.println("");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}


void setup() {
  Serial.begin(115200);
  dht.begin();
  WIFIConnect();
  client.setServer(MQTTServer, Port);

}

void loop() {
  delay(10);
  npublish();
  if (!client.connected()) {
    MQTT_Reconnect();
  }
  client.loop();
  
}

void npublish(){
  float t = dht.readTemperature();
  float h = dht.readHumidity();

  String send = "NhietDo"+String(t)+"DoAm"+String(h);
  client.publish("CHUYU",String(send).c_str());
}