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

// Wi-Fi sozlamalari
const char* ssid = "Wokwi-GUEST";
const char* password = "";

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

// Potensiometr pin raqami
#define POT_PIN 34

// Ob'ektlar
WiFiClient espClient;
PubSubClient client(espClient);

void setup_wifi() {
  Serial.print("WiFiga ulanmoqda...");
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println();
  Serial.println("WiFiga ulandi!");
  Serial.print("IP manzil: ");
  Serial.println(WiFi.localIP());
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("MQTT brokerga ulanmoqda...");
    String clientId = "ESP32Client-" + String(random(0xffff), HEX);
    if (client.connect(clientId.c_str())) {
      Serial.println("MQTT brokerga ulandi!");
    } else {
      Serial.print("Xatolik. Kod: ");
      Serial.println(client.state());
      delay(5000);
    }
  }
}

void setup() {
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
}

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

  int potValue = analogRead(POT_PIN); // 0-4095
  int percent = map(potValue, 0, 4095, 0, 100); // 0-100 foizga aylantirish

  char msg[50];
  sprintf(msg, "Yuborildi -> Qiymat - %d", percent);

  client.publish("esp32/pot", msg);
  Serial.println(msg);

  delay(3000); // 3 soniyada bir yuborish
}