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

// === WiFi Settings ===
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// === Telegram Bot ===
#define BOT_TOKEN "8403154383:AAF0m21mhUwFKZ9M8TMxiyhoJguXnX-a1Kg"
#define CHAT_ID "-4944057888" // sama seperti node sensor

WiFiClientSecure client;
UniversalTelegramBot bot(BOT_TOKEN, client);

// === Alarm Configuration ===
const int ledPin = 2;                // pin LED
const int alarmDuration = 30000;     // 30 detik (ms)

unsigned long lastChecked = 0;
const unsigned long checkDelay = 2000;

void triggerAlarm() {
  Serial.println("🚨 Trigger received! Turning ON LED for 30 seconds...");
  digitalWrite(ledPin, HIGH);
  bot.sendMessage(CHAT_ID, "🚨 LED ALARM ON (30 seconds)", "");

  delay(alarmDuration);

  digitalWrite(ledPin, LOW);
  Serial.println("✅ LED OFF (Alarm ended)");
  bot.sendMessage(CHAT_ID, "✅ LED ALARM OFF", "");
}

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

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

    Serial.println("📥 Received command: " + text + " from " + from_name);

    if (text == "/triggerbuzz") {
      bot.sendMessage(chat_id, "🔔 Alarm triggered by command", "");
      triggerAlarm();
    }
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);

  WiFi.begin(ssid, password);
  client.setInsecure(); // Non-SSL validation

  Serial.print("🔌 Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("\n✅ WiFi Connected!");

  bot.sendMessage(CHAT_ID, "🟢 Alarm Node Online and Ready", "");
}

void loop() {
  unsigned long now = millis();
  if (now - lastChecked > checkDelay) {
    handleTelegramMessages();
    lastChecked = now;
  }
}