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

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

#define BOTtoken "7648568824:AAEaclFgnS7vqoEpVWEWgiMpzTlAZyH9LYA"
#define CHAT_ID "1240345553"

WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);

// --- LCD & Servo ---
LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27
Servo myservo;

// --- PIN SETUP ---
const int pirPin = 4;     // Sensor PIR
const int servoPin = 13;  // Servo pin
int pirState = LOW;
int value = 0;

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

  // LCD setup
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("System Starting...");
  lcd.setCursor(0, 1);
  lcd.print("Connecting WiFi");

  // Servo & PIR
  myservo.attach(servoPin);
  pinMode(pirPin, INPUT);

  // WiFi connect
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("\nWiFi connected");
  Serial.println(WiFi.localIP());
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("WiFi connected!");

  client.setCACert(TELEGRAM_CERTIFICATE_ROOT);
  bot.sendMessage(CHAT_ID, "ROBOTNYA AKTIF NEHH", "");

  delay(1000);
  lcd.clear();
}

void loop() {
  value = digitalRead(pirPin);
  if (value == HIGH) {
    if (pirState == LOW) {
      Serial.println("Gerakan Terdeteksi!");
      lcd.setCursor(0, 0);
      lcd.print("GUWEH PANTAU NIHH ");

      bot.sendMessage(CHAT_ID, "BUKA WOII!", "");
      
      myservo.write(90); // Gerakkan servo
      delay(1000);
      myservo.write(0);  // Kembali ke awal
      pirState = HIGH;
    }
  } else {
    if (pirState == HIGH) {
      Serial.println("MAGER AHH");
      lcd.setCursor(0, 0);
      lcd.print("No Motion       ");
      pirState = LOW;
    }
  }

  delay(500); // Hindari spam
}