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

// SSID dan Password WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Telegram BOT
#define BOTtoken "7601682558:AAE1gog7eZd86A-HbOZDqZa4mZasT_ylywM"
#define CHAT_ID "7866627819"

#define pin_merah   15
#define pin_kuning  13 
#define pin_hijau    4
#define pin_biru     5

WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);

// Cek Pesan Setiap 1 detik
int interval = 1000;
unsigned long waktu_terakhir;
bool status_merah;
bool status_kuning;
bool status_hijau;
bool status_biru;

void setup() {
  // atur mode pin menjadi output
  pinMode(pin_merah, OUTPUT);
  pinMode(pin_kuning, OUTPUT);
  pinMode(pin_hijau, OUTPUT);
  pinMode(pin_biru, OUTPUT);

  // Serial monitor
  Serial.begin(115200);
  
  // Hubungkan ke Wi-Fi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  client.setCACert(TELEGRAM_CERTIFICATE_ROOT);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Sedang menghubungkan ke WiFi..");
  }
  
  // IP Address
  Serial.println(WiFi.localIP());
  Serial.print("Atur Waktu: ");
  configTime(0, 0, "pool.ntp.org"); 
  time_t now = time(nullptr);
  while (now < 24 * 3600)
  {
    Serial.print(".");
    delay(100);
    now = time(nullptr);
  }
  Serial.println(now);
}

void loop() {
  cek_pesan();
}

// Cek Pesan Terbaru
void cek_pesan(){
  if (millis() > waktu_terakhir + interval){
    int banyakPesan = bot.getUpdates(bot.last_message_received + 1);
  
    while(banyakPesan) {
      Serial.println("got response");
      handleNewMessages(banyakPesan);
      banyakPesan = bot.getUpdates(bot.last_message_received + 1);
    }
    waktu_terakhir = millis();
  }
}

// Memproses pesan yang diterima
void handleNewMessages(int numNewMessages) {
  for (int i=0; i<numNewMessages; i++) {
    
    // Cek Chat ID
    String chat_id = String(bot.messages[i].chat_id);
    if (chat_id != CHAT_ID){
      bot.sendMessage(chat_id, "Unauthorized user", "");
      continue;
    }
    
    // Terima pesan dari telegram
    String text = bot.messages[i].text;
    Serial.println(text);

    String from_name = bot.messages[i].from_name;

    if (text == "/start") {
      String welcome = "Selamat Datang, " + from_name + ".\n";
     // Komen berikut untuk kontrol LED
      welcome += "/merah_on \n"; //untuk LED Merah ON 
      welcome += "/merah_off \n"; // untuk LED Merah OFF
      welcome += "/status_merah\n"; // mendapatkan status LED Merah

      welcome += "/kuning_on \n"; //untuk LED Merah ON 
      welcome += "/kuning_off \n"; // untuk LED Merah OFF
      welcome += "/status_kuning\n"; // mendapatkan status LED Merah

      welcome += "/hijau_on \n"; //untuk LED Merah ON 
      welcome += "/hijau_off \n"; // untuk LED Merah OFF
      welcome += "/status_hijau\n"; // mendapatkan status LED Merah

      welcome += "/biru_on \n"; //untuk LED Merah ON 
      welcome += "/biru_off \n"; // untuk LED Merah OFF
      welcome += "/status_biru\n"; // mendapatkan status LED Merah
      bot.sendMessage(chat_id, welcome, "");
    }

    if (text == "/merah_on") 
    {
      bot.sendMessage(chat_id, "LED Merah ON", "");
      led_merah(true);
    }
    
    if (text == "/merah_off") 
    {
      bot.sendMessage(chat_id, "LED Merah OFF", "");
      led_merah(false);
    }

    if (text == "/status_merah") 
    {
      if (digitalRead(pin_merah))
      {
        bot.sendMessage(chat_id, "LED Merah ON", "");
      }
      else
      {
        bot.sendMessage(chat_id, "LED Merah OFF", "");
      }
    }

        if (text == "/kuning_on") 
    {
      bot.sendMessage(chat_id, "LED kuning ON", "");
      led_kuning(true);
    }
    
    if (text == "/kuning_off") 
    {
      bot.sendMessage(chat_id, "LED kuning OFF", "");
      led_kuning(false);
    }

    if (text == "/status_kuning") 
    {
      if (digitalRead(pin_kuning))
      {
        bot.sendMessage(chat_id, "LED kuning ON", "");
      }
      else
      {
        bot.sendMessage(chat_id, "LED kuning OFF", "");
      }
    }

        if (text == "/hijau_on") 
    {
      bot.sendMessage(chat_id, "LED hijau ON", "");
      led_hijau(true);
    }
    
    if (text == "/hijau_off") 
    {
      bot.sendMessage(chat_id, "LED hijau OFF", "");
      led_hijau(false);
    }

    if (text == "/status_hijau") 
    {
      if (digitalRead(pin_hijau))
      {
        bot.sendMessage(chat_id, "LED hijau ON", "");
      }
      else
      {
        bot.sendMessage(chat_id, "LED hijau OFF", "");
      }
    }

        if (text == "/biru_on") 
    {
      bot.sendMessage(chat_id, "LED biru ON", "");
      led_biru(true);
    }
    
    if (text == "/biru_off") 
    {
      bot.sendMessage(chat_id, "LED biru OFF", "");
      led_biru(false);
    }

    if (text == "/status_biru") 
    {
      if (digitalRead(pin_biru))
      {
        bot.sendMessage(chat_id, "LED biru ON", "");
      }
      else
      {
        bot.sendMessage(chat_id, "LED biru OFF", "");
      }
    }
    
     }
}

void led_merah(bool isOn){
  if(isOn){
    digitalWrite(pin_merah, HIGH);
  }
  else{
    digitalWrite(pin_merah, LOW);
  }
}

void led_kuning(bool isOn){
  if(isOn){
    digitalWrite(pin_kuning, HIGH);
  }
  else{
    digitalWrite(pin_kuning, LOW);
  }
}

void led_hijau(bool isOn){
  if(isOn){
    digitalWrite(pin_hijau, HIGH);
  }
  else{
    digitalWrite(pin_hijau, LOW);
  }
}

void led_biru(bool isOn){
  if(isOn){
    digitalWrite(pin_biru, HIGH);
  }
  else{
    digitalWrite(pin_biru, LOW);
  }
}