#define BLYNK_TEMPLATE_ID "TMPL2bsJyrlzm"
#define BLYNK_TEMPLATE_NAME "Quickstart Device"
#define BLYNK_AUTH_TOKEN "A46L3pvXe3F5VHGO6nhqXBv9C7GB9RQG"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h>
#include "time.h"

// إعداد الوقت (NTP)
const char* ntpServer = "pool.ntp.org";
const long gmtOffset_sec = 3 * 3600;  // +3 GMT للسودان
const int daylightOffset_sec = 0;

#define DHTPIN 4
#define DHTTYPE DHT22
#define PIR_PIN 5
#define SOUND_BTN 12
#define BUZZER 15
#define LED 2
#define SERVO_PIN 18

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myservo;

WidgetLCD lcdWidget(V5);
WidgetLED ledWidget(V6);

float t, h;
bool motion = false, sound = false;
unsigned long eventTime = 0;
bool eventActive = false;
bool servoRight = true;

String lastName = ""; // اسم الطالب من بايثون

// استقبال الاسم من بايثون عبر Blynk (V3)
BLYNK_WRITE(V3) {
  lastName = param.asStr();

  // الحصول على الوقت الحالي
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    Serial.println("⚠️ Failed to get time");
    return;
  }
  char timeString[30];
  strftime(timeString, sizeof(timeString), "%Y-%m-%d %H:%M:%S", &timeinfo);

  if (lastName == "Unauthorized") {
    // تفعيل التنبيه (ضوء + صوت + سيرفو)
    digitalWrite(BUZZER, HIGH);
    digitalWrite(LED, HIGH);
    myservo.write(0); // تحريك السيرفو
    eventActive = true;
    eventTime = millis();

    // عرض Unauthorized على الشاشات
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("ALERT!");
    lcd.setCursor(0, 1);
    lcd.print("Unauthorized");

    lcdWidget.clear();
    lcdWidget.print(0, 0, "ALERT!");
    lcdWidget.print(0, 1, "Unauthorized");

    ledWidget.on();
    String logData = "Unauthorized Entry | " + String(timeString);
    Serial.println("🚨 " + logData);
    Blynk.virtualWrite(V4, logData);

  } else {
    // عرض الاسم كحضور عادي
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Entry:");
    lcd.setCursor(0, 1);
    lcd.print(lastName);

    lcdWidget.clear();
    lcdWidget.print(0, 0, "Entry:");
    lcdWidget.print(0, 1, lastName);

    String logData = "Entry " + lastName + " | " + String(timeString);
    Serial.println("✅ " + logData);
    Blynk.virtualWrite(V4, logData);
  }
}

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(SOUND_BTN, INPUT_PULLUP);
  pinMode(BUZZER, OUTPUT);
  pinMode(LED, OUTPUT);

  myservo.attach(SERVO_PIN);
  myservo.write(90); // الوضع الطبيعي

  lcd.init();
  lcd.backlight();
  dht.begin();

  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // إعداد NTP
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
}

void loop() {
  Blynk.run();

  h = dht.readHumidity();
  t = dht.readTemperature();

  motion = digitalRead(PIR_PIN);
  sound = !digitalRead(SOUND_BTN);

  if (motion || sound) {
    eventActive = true;
    eventTime = millis();

    digitalWrite(BUZZER, HIGH);
    digitalWrite(LED, HIGH);

    // تحريك السيرفو لمحاكاة الكاميرا
    if (servoRight) {
      myservo.write(0);
    } else {
      myservo.write(180);
    }
    servoRight = !servoRight;

    if (motion && sound) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Motion & Noise");
      lcd.setCursor(0, 1);
      lcd.print("Detected");

      lcdWidget.clear();
      lcdWidget.print(0, 0, "Motion & Noise");
      lcdWidget.print(0, 1, "Detected");

      ledWidget.on();
      Blynk.virtualWrite(V4, "Motion & Noise Detected");

    } else if (motion) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Motion Detected");

      lcdWidget.clear();
      lcdWidget.print(0, 0, "Motion Detected");

      ledWidget.on();
      Blynk.virtualWrite(V4, "Motion Detected");

    } else if (sound) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Noise Detected");

      lcdWidget.clear();
      lcdWidget.print(0, 0, "Noise Detected");

      ledWidget.on();
      Blynk.virtualWrite(V4, "Noise Detected");
    }
  }

  // إيقاف الحدث بعد 5 ثواني
  if (eventActive && (millis() - eventTime >= 5000)) {
    eventActive = false;
    digitalWrite(BUZZER, LOW);
    digitalWrite(LED, LOW);
    ledWidget.off();
    myservo.write(90); // عودة للوضع الطبيعي
  }

  // في الوضع الطبيعي عرض الحرارة والرطوبة
  if (!eventActive) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("T:");
    lcd.print(t, 1);
    lcd.print(" H:");
    lcd.print(h, 1);

    lcdWidget.clear();
    lcdWidget.print(0, 0, "T:" + String(t, 1));
    lcdWidget.print(0, 1, "H:" + String(h, 1));

    String data = "T:" + String(t, 1) + " H:" + String(h, 1);
    Blynk.virtualWrite(V1, t);
    Blynk.virtualWrite(V2, h);
    Blynk.virtualWrite(V4, data);
  }
}