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

const char* ssid = "Wokwi-GUEST";
const char* password = "";

#define BOT_TOKEN "8211036391:AAEU0q16zuM-43Ahw5-CR70VrnCx07mFe4k"
#define CHAT_ID "905866858"

WiFiClientSecure client;
UniversalTelegramBot bot(BOT_TOKEN, client);

const int ledPin = 4;

// Keyboard custom
String keyboardJson = "[[\"/on\", \"/off\"], [\"/bantuan\"]]";

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW); // Pastikan LED mati saat start
  
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  client.setCACert(TELEGRAM_CERTIFICATE_ROOT);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println("\nConnected to WiFi");
  
  // Kirim pesan awal dengan keyboard
  String welcomeMsg = "🤖 *LED Control Bot* 🤖\n";
  welcomeMsg += "Gunakan tombol di bawah atau ketik perintah:\n";
  welcomeMsg += "• /on - Nyalakan LED\n";
  welcomeMsg += "• /off - Matikan LED\n";
  welcomeMsg += "• /bantuan - Tampilkan pesan bantuan\n";
  
  bot.sendMessageWithReplyKeyboard(CHAT_ID, welcomeMsg, "", keyboardJson, true);
}

void handleMessage(String chat_id, String text) {
  text.toLowerCase();
  
  if (text == "/on" || text == "on") {
    digitalWrite(ledPin, HIGH);
    bot.sendMessage(chat_id, "🔴 LED sekarang NYALA", "");
  }
  else if (text == "/off" || text == "off") {
    digitalWrite(ledPin, LOW);
    bot.sendMessage(chat_id, "⚪ LED sekarang MATI", "");
  }
  else if (text == "/start" || text == "/help" || text == "help") {
    String helpMsg = "🛠 *Panduan Penggunaan* 🛠\n\n";
    helpMsg += "Anda dapat mengontrol LED dengan:\n";
    helpMsg += "• Tombol keyboard yang tersedia\n";
    helpMsg += "• Atau dengan perintah text:\n";
    helpMsg += "  - /on atau 'on' untuk menyalakan\n";
    helpMsg += "  - /off atau 'off' untuk mematikan\n\n";
    helpMsg += "Status LED saat ini: ";
    helpMsg += digitalRead(ledPin) ? "NYALA 🔴" : "MATI ⚪";
    
    bot.sendMessageWithReplyKeyboard(chat_id, helpMsg, "", keyboardJson, true);
  }
  else {
    bot.sendMessage(chat_id, "Perintah tidak dikenali. Ketik /help untuk bantuan", "");
  }
}

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

  while(numNewMessages) {
    for (int i=0; i<numNewMessages; i++) {
      handleMessage(String(bot.messages[i].chat_id), bot.messages[i].text);
    }
    numNewMessages = bot.getUpdates(bot.last_message_received + 1);
  }
  delay(100);
}