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

// WiFi ma'lumotlari
const char* ssid = "Wokwi-GUEST";
const char* password = "";

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

// PIR sensor pin
#define PIR_PIN 14

// Obyektlar
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("Ulanishda xatolik. Kod: ");
      Serial.println(client.state());
      delay(5000);
    }
  }
}

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

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

  int motion = digitalRead(PIR_PIN);
  const char* message;

  if (motion == HIGH) {
    message = "Yuborildi -> Harakat mavjud";
  } else {
    message = "Yuborildi -> Harakat mavjud emas";
  }

  client.publish("esp32/pir", message);
  Serial.println(message);

  delay(3000); // Har 3 soniyada tekshirish
}