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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqttServer = "broker.hivemq.com";
int port = 1883;

// Temperature MQTT Topics
#define MQTT_PUB_TEMP "esp32-cenam/dht1/temperature"
#define MQTT_PUB_HUM  "esp32-cenam/dht1/humidity"

String stMac;
char mac[50];
char clientId[50];
//Pin del sensor
const int SensorPIN = 15;

WiFiClient espClient;
PubSubClient client(espClient);

DHTesp dhtSensor;



void setup() {
  Serial.begin(9600);
  dhtSensor.setup(SensorPIN, DHTesp::DHT22);

  delay(10);
  Serial.println();
  Serial.print("Conectado a ");
  Serial.println(ssid);

  wifiConnect();

  Serial.println("");
  Serial.println("WiFi conectado");
  Serial.println("Dirección IP: ");
  Serial.println(WiFi.localIP());
  Serial.println(WiFi.macAddress());
  stMac = WiFi.macAddress();
  stMac.replace(":", "_");
 
  client.setServer(mqttServer, port);

}

void wifiConnect() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
}

void mqttReconnect() {
  while (!client.connected()) {
    Serial.print("Intentando conexión MQTT...");
    long r = random(1000);
    sprintf(clientId, "clientId-%ld", r);
    if (client.connect(clientId)) {
      Serial.print(clientId);
      Serial.println(" Conectado");    
    } else {
      Serial.print("fallo, rc=");
      Serial.print(client.state());
      Serial.println(" Intentando de nuevo  en 5 segundo");
      delay(5000);
    }
  }
}



void loop() {
  delay(500);
  if (!client.connected()) {

    mqttReconnect();
  }
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temperatura: " + String(data.temperature, 2) + "°C");
  Serial.println("Humedad: " + String(data.humidity, 1) + "%");

  client.publish(MQTT_PUB_TEMP,String(data.temperature, 2).c_str());
  client.publish(MQTT_PUB_HUM,String(data.humidity, 2).c_str());    
  client.loop();
}