#include <Wire.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>
#include <ArduinoJson.h>
#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h>

// Wi-Fi and Telegram Credentials
const char* ssid = "Wokwi-GUEST";
const char* password = "";

#define BOTtoken "7644389856:AAFQY9JpnVjhhfX_-eckZgmpLeTexd6ImFo"
#define CHAT_ID "6841230108"

#ifdef ESP8266
  X509List cert(TELEGRAM_CERTIFICATE_ROOT);
#endif

WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);

// Pin dan variabel
int ledPin = 2;
int inputPin = 4;
int pirState = LOW;
int vallue = 0;

// Servo
Servo myServo;
int servoPin = 13;

// LCD I2C
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Alamat I2C bisa berbeda (0x3F, 0x27, dll)

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

  // Koneksi WiFi
  #ifdef ESP8266
    configTime(0, 0, "pool.ntp.org");
    client.setTrustAnchors(&cert);
  #endif

  #ifdef ESP32
    client.setCACert(TELEGRAM_CERTIFICATE_ROOT);
  #endif

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.print("Connecting Wifi: ");
  Serial.println(ssid);
  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

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

  // Setup Pin
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);

  // Setup Servo
  myServo.attach(servoPin);
  myServo.write(0); // posisi awal

  // Setup LCD
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("M. ZIQRILLAH 56");
  lcd.setCursor(0, 1);
  lcd.print("INFRA RED SENSOR");

  // Telegram notifikasi awal
  bot.sendMessage(CHAT_ID, "Bot started up", "");
}

void loop() {
  vallue = digitalRead(inputPin);

  if (vallue == HIGH) {
    digitalWrite(ledPin, HIGH);
    if (pirState == LOW) {
      Serial.println("MOTION DETECTION!");
      bot.sendMessage(CHAT_ID, "MUSUH TERLIHAT , SENSOR IR ACTIVE", "");

      // Tampilkan pesan di LCD
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Selamat Datang!");
      delay(2000);
      lcd.print("");

      // Gerakkan servo
      myServo.write(90); // ke posisi 90 derajat
      delay(1000);
      myServo.write(0);  // kembali ke posisi semula
      delay(500);

      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW);
    if (pirState == HIGH) {
      Serial.println("NO MOTION DETECTION!");
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Selamat Tinggal!");
      myServo.write(0);
      pirState = LOW;
    }
  }
}