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

const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqttServer = "test.mosquitto.org";
int port = 1883;
String stMac;
char mac[50];
char clientId[50];

WiFiClient espClient;
PubSubClient client(espClient);

int valor = 0;
int potenciometro  = 12;
int valor1 = 0;
int potenciometro1  = 14;


void setup() {
  Serial.begin(115200);
  pinMode(potenciometro, INPUT);
  pinMode(potenciometro1, INPUT);
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  wifiConnect();

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println(WiFi.macAddress());
  stMac = WiFi.macAddress();
  stMac.replace(":", "_");
  Serial.println(stMac);
  
  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("Attempting MQTT connection...");
    long r = random(1000);
    sprintf(clientId, "clientId-%ld", r);
    if (client.connect(clientId)) {
      Serial.print(clientId);
      Serial.println(" connected");
      client.subscribe("panela/limon");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}

void loop() {
 valor = analogRead(potenciometro);
 valor1 = analogRead(potenciometro1);
 delay(1000);
 if (client.connected()) {
  String potString = String(valor, 1);
  Serial.print("Valor del potenciómetro: ");
  Serial.print(valor);
  Serial.print("C\n");
  client.publish("lectura/temperatura", potString.c_str());
 }
 if (!client.connected()) {
  mqttReconnect();
 }
 client.loop();
}