#include <ESP8266WiFi.h> 
#include <WiFiClientSecure.h> 
#include <UniversalTelegramBot.h> 

char ssid[] = "имя_твоего wi-fi";
char password[] = "пароль_wi-fi";

#define BOTtoken "твой_токен"

WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);

String keyboardJson = "[[\"/ledon\", \"/ledoff\"]]";

void setup() {
  Serial.begin(9600);
  client.setInsecure();
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }
}

void loop() {
  int numNewMessages = bot.getUpdates(
           bot.last_message_received + 1);
  handleNewMessages(numNewMessages);
}

void handleNewMessages(int numNewMessages) {
  for (int i = 0; i < numNewMessages; i++) {
    String chat_id = String(bot.messages[i].chat_id);
    String text = bot.messages[i].text;
    if (text == "/ledon") {
      Serial.println("turnOn");
      bot.sendMessage(chat_id, "Relay is ON", "");
    }
    if (text == "/ledoff") {
      Serial.println("turnOff");
      bot.sendMessage(chat_id, "Relay is OFF", "");
    }
    if (text == "/start") {
      bot.sendMessageWithReplyKeyboard(chat_id, 
          "Choose from one of the following options",
		  "", keyboardJson, true);
    }
  }
}