#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>

// Wifi network station credentials
#define WIFI_SSID WIFISSID
#define WIFI_PASSWORD WIFIPASS

#define BOT_TOKEN BOTTOKEN

const String CHAT_ID = CHATID;
const unsigned long BOT_MTBS = 1000; // mean time between scan messages

// GPIO Pin Definition
const int inputPin = 0;

// Initiale Zustandsvariablen
bool lastState = LOW;
bool again = true;
int count = 0;
X509List cert(TELEGRAM_CERTIFICATE_ROOT);
WiFiClientSecure secured_client;
UniversalTelegramBot bot(BOT_TOKEN, secured_client);
unsigned long bot_lasttime;          // last time messages' scan has been done
bool Start = false;

void handleNewMessages(int numNewMessages)
{
  Serial.println("handleNewMessages");
  Serial.println(String(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 == "/send_test_action")
    {
      bot.sendChatAction(chat_id, "typing");
      delay(4000);
      bot.sendMessage(chat_id, "Did you see the action message?");
      }

    if (text == "/start")
    {
      String welcome = "Willkommen beim Klingelbot";
      bot.sendMessage(chat_id, welcome);
    }
  }
}

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

 pinMode(inputPin, INPUT_PULLUP);
  // Set WiFi to station mode and disconnect from an AP if it was Previously
  // connected
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);

  // attempt to connect to Wifi network:
  Serial.print("Connecting to Wifi SSID ");
  Serial.print(WIFI_SSID);
  Serial.print(" ");
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  secured_client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(500);
  }
  Serial.println();

  Serial.print("WiFi connected. IP address: ");
  Serial.println(WiFi.localIP());
}

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);
    }
  delay(100); // Kurze Pause, um Prellen zu vermeiden
    bot_lasttime = millis();
  }
   if (digitalRead(inputPin) == LOW) {
    if (again) {
      bot.sendMessage(CHAT_ID, "Ding Dong");
      again = false;
    } else {
      count ++;
      Serial.println (count);
      if (count >20) {
        again = true;
        count=0;
      }
    }
  }
}