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

#define LED_Naik 5
#define LED_Turun 22 
#define DHTPIN 15 
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);

#define WIFI_SSID "FITRIA AMRINA"
#define WIFI_PASSWORD "20071982"

#define BOT_TOKEN "5062535577:AAFB-k-dWQG9HmEPduqFq8jNZaPWA4YEoes"
#define CHAT_ID "375153334"

WiFiClientSecure secured_client;
UniversalTelegramBot bot(BOT_TOKEN, secured_client);

const unsigned long BOT_MTBS = 1000; 
unsigned long bot_lasttime; 
float temperatureC;
float humidity;

void handleNewMessages(int numNewMessages)
{
  Serial.print("handleNewMessages ");
  Serial.println(numNewMessages);
  for (int i = 0; i < numNewMessages; i++)
  {
    String chat_id = String(bot.messages[i].chat_id);
    
    if (chat_id != CHAT_ID )
    {
      bot.sendMessage(chat_id, "Unauthorized user", "");
    }
    else
    {
      String text = bot.messages[i].text;
      String from_name = bot.messages[i].from_name;
      if (from_name == "")
        from_name = "Guest";
      if (text == "/status")
      {   String msg = "Temperatur : ";
          msg += msg.concat(temperatureC);
          msg += "'C\n";
          msg += "Kelembapan : ";
          msg += msg.concat(humidity);
          msg += "%\n";
          bot.sendMessage(chat_id,msg, ""); 
      }
      if (text == "/start")
      {
        String welcome = "MONITORING RUANGAN KUBIKEL \n";
        welcome += "/status : nilai Suhu dan Humidity \n";
        bot.sendMessage(chat_id, welcome, "");
      }
    }
  }
}

void setup()
{
  pinMode(LED_Naik, OUTPUT);
  pinMode(LED_Turun, OUTPUT);

  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  secured_client.setCACert(TELEGRAM_CERTIFICATE_ROOT);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  
  dht.begin();
}

void loop()
{
  humidity = dht.readHumidity();
  temperatureC = dht.readTemperature();
  
  if (humidity <65 && temperatureC >35)
  {
    digitalWrite(LED_Naik, HIGH);
    digitalWrite(LED_Turun, LOW);
  } 
  else if (humidity >75 && temperatureC <29)
  {
    digitalWrite(LED_Naik, LOW);
    digitalWrite(LED_Turun, HIGH);
  }  
  else
  {
    digitalWrite(LED_Naik, LOW);
    digitalWrite(LED_Turun, LOW);
  }
  delay(1000);

  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();
  }
}