#include <ESP8266WiFi.h>
#include <MQTT.h>
#include <ArduinoJson.h>

const char *SSID = "ssid";
const char *PWD = "password";
char device_name[] = "lamp";
#define PORT_NUMBER_TO_CONTROL LED_BUILTIN


WiFiClient wifiClient = WiFiClient();
MQTTClient client(350);

unsigned long lastMillis = 0;
void connect() {
  Serial.print("connecting...");
  while (!client.connect("arduino", "try", "try")) {
    Serial.print(".");
    delay(1000);
  }

  Serial.println("\nconnected!");

  client.subscribe("domoticz/out");
}

void messageReceived(MQTTClient *client, char topic[], char payload[], int payload_length) {
  StaticJsonDocument<350> doc;
  deserializeJson(doc, payload, payload_length);

  const char* name = doc["name"].as<char*>();
  int i = 0;
  bool if_name_match = true;
  while (name[i]) {
    if (name[i] != device_name[i]) {
      if_name_match = false;
      break;
    }
    i++;
  }
  if (if_name_match) {
    if (!doc["nvalue"].as<bool>()) {
      digitalWrite(PORT_NUMBER_TO_CONTROL, HIGH);
      Serial.println("Включено");
    }
    else {
      digitalWrite(PORT_NUMBER_TO_CONTROL, LOW);
      Serial.println("Выключено");
    }
  }
}

void setup() {
  pinMode(PORT_NUMBER_TO_CONTROL, OUTPUT);
  Serial.begin(115200);

  Serial.print("Connecting to ");
  Serial.println(SSID);
  WiFi.begin(SSID, PWD);

  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
    // we can even make the ESP32 to sleep
  }

  Serial.println("Connected - ");
  client.begin("192.168.0.120", wifiClient);
  client.onMessageAdvanced(messageReceived);
  connect();
}

void loop() {
  client.loop();

  if (!client.connected()) {
    connect();
  }
}