#include <WiFi.h> //library buat aktifin wifi buat ke esp
#include <WiFiClientSecure.h> //biasanya wifi ada pwnya, buat pwnya
#include <UniversalTelegramBot.h> //nyambungi ke telegram
//include = masukin library di progrma

// identitas wifinya
#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD "" //pwnya apa
// Telegram BOT Token (Get from Botfather)
#define BOT_TOKEN "7050221132:AAHU9-JLmxPFuKg1XeCbm707Ey3YPeO9ijo"

const unsigned long BOT_MTBS = 1000; // jeda antara telegram dan esp nya

WiFiClientSecure secured_client; //perintah buat aktifin PW wifinya
UniversalTelegramBot bot(BOT_TOKEN, secured_client); //peintah buat nyambungin bot tele dan pw wifinya
unsigned long bot_lasttime; // kalo wifi mati, biar espnya scan minta terhubung terus ke wifinya

const int ledPin = 2; //
int ledStatus = 0;

void handleNewMessages(int numNewMessages)
{
  Serial.print("handleNewMessages ");
  Serial.println(numNewMessages);

  for (int i = 0; i < numNewMessages; i++)
  {
    String chat_id = bot.messages[i].chat_id;
    String text = bot.messages[i].text;

    String from_name = bot.messages[i].from_name;
    if (from_name == "")
      from_name = "Guest";

    if (text == "/ledon")
    {
      digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
      ledStatus = 1;
      bot.sendMessage(chat_id, "Turn ON LED", "");
      Serial.println("Turn ON LED\n\n");
    }

    if (text == "/ledoff")
    {
      ledStatus = 0;
      digitalWrite(ledPin, LOW); // turn the LED off (LOW is the voltage level)
      bot.sendMessage(chat_id, "Turn OFF LED", "");
      Serial.println("Turn OFF LED\n\n");
    }

    if (text == "/status")
    {
      if (ledStatus)
      {
        bot.sendMessage(chat_id, "LED is ON", "");
        Serial.println("LED is ON\n\n");
      }
      else
      {
        bot.sendMessage(chat_id, "LED is OFF", "");
        Serial.println("LED is OFF\n\n");
      }
    }
    if (text == "/start")
    {
      String welcome = "Hai sayang, mau nyalain lampu ya?" + from_name + ".\n";//string itu tipe data tulisan
      welcome += "Pilih menu di bawaah ini ya ayang.\n\n";
      welcome += "/ledon : Untuk menyalakan lampu\n";
      welcome += "/ledoff : Untuk mematikan lampu\n";
      welcome += "/status : Untuk melihat status lampu\n";
      bot.sendMessage(chat_id, welcome, "Markdown"); //APA INI BRUH GAK NGERTI
    }
  }
}

void setup()
{
  Serial.begin(115200);
  Serial.println();

  pinMode(ledPin, OUTPUT); // buat setting pin nomor 2. initialize digital ledPin as an output.
  digitalWrite(ledPin, LOW); // initialize pin as off (active LOW)

  // attempt to connect to Wifi network:
  Serial.print("Connecting to Wifi SSID ");
  Serial.print(WIFI_SSID);
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  secured_client.setCACert(TELEGRAM_CERTIFICATE_ROOT); // Add root certificate for api.telegram.org
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(1000);
  }
  Serial.print("\nWiFi connected. IP address: ");
  Serial.println(WiFi.localIP());

  Serial.print("Retrieving time: ");
  configTime(0, 0, "pool.ntp.org"); // get UTC time via NTP //atur waktu realtime dicetak ke Serial Monitor setiap detik
  time_t now = time(nullptr);
  while (now < 24 * 3600)
  {
    Serial.print(".");
    delay(100);
    now = time(nullptr);
  }
  Serial.println(now);
  
}

void loop()
{
  if (millis() - bot_lasttime > BOT_MTBS)
  {
    int numNewMessages = bot.getUpdates(bot.last_message_received + 1);

    while (numNewMessages)
    {
      Serial.println("got response");
      handleNewMessages(numNewMessages);
      numNewMessages = bot.getUpdates(bot.last_message_received + 1);
    }

    bot_lasttime = millis();
  }
}