#define BLYNK_TEMPLATE_ID "TMPL6tDc_WYHI"
#define BLYNK_TEMPLATE_NAME "Keamanan Pintu"
#define BLYNK_AUTH_TOKEN "_EkIC6enYr4p8pnQkorm8vpqRxGjtgcU"

const int relay = 4;
#define BUTTON_PIN 18
int ldrPin = 34;    
int ldrVal = 0;   
#include <Keypad.h>
#include <BlynkSimpleEsp32.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

int SW_relay = 0;
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
const float GAMMA = 0.7;
const float RL10 = 50;
const byte ROWS = 4;
const byte COLS = 4; 
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}   };

byte rowPins[ROWS] = {13, 12, 14, 27}; // Pin untuk baris
byte colPins[COLS] = {26, 25, 33, 32}; // Pin untuk kolom
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Konfigurasi password (contoh: "1234")
String password = "0204";
String inputPassword = "";

BLYNK_WRITE(V0)
{
  SW_relay = param.asInt();
  if (SW_relay ==1){
    digitalWrite(relay, HIGH);
    Serial.println("Terbuka");
    Blynk.virtualWrite(V0, HIGH);
    delay(1000);
  }
  else{
    digitalWrite(relay, LOW);
    Serial.println("Terkunci");
    Blynk.virtualWrite(V0, LOW);
    delay(1000);
  }
}

BLYNK_CONNECTED() { 
  Blynk.syncAll();
}


void setup() {
  Blynk.begin(auth, ssid, pass);
  Serial.begin(115200);
  pinMode(relay, OUTPUT);
  digitalWrite(relay, LOW);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Password: ");
  lcd.setCursor(0, 1);
  lcd.print("Tekan Bel");
  delay(5000);
}

void loop() {
  delay(1000);
  Blynk.run();
  ldrVal = analogRead(ldrPin); 
  float voltage = ldrVal * (3.3 / 4095.0); 
  float resistance = 2000 * voltage / (3.3 - voltage);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
  int buttonState = digitalRead(BUTTON_PIN);
 
 if (lux < 200) {
  Blynk.logEvent("ldr","Ada orang disekitar rumah");
  } else {  }

  if (buttonState == LOW) {
    // Jika tombol ditekan, tampilkan pesan di LCD
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Mohon maaf,");
    lcd.setCursor(0,1);
    lcd.print("                ");
    delay(2000);
    lcd.setCursor(0, 0);
    lcd.print("penghuni rumah");
    lcd.setCursor(0, 1);
    lcd.print("sedang pergi");
    Serial.println("Mohon maaf, Penghuni rumah sedang pergi");
    Blynk.logEvent("tombol","Ada tamu");
    delay(2000);
  } else {
    // Jika tombol tidak ditekan, kosongkan baris kedua
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Password: ");
    lcd.setCursor(0, 1);
    lcd.print("Tekan Bel");
  }
  
  char key = keypad.getKey();

  if (key) {
    Serial.println(key);
    lcd.setCursor(9, 0);
    lcd.print(key);
    delay(500);
    if (key == '#') { // Tombol '#' untuk submit password
      if (inputPassword == password) {
        Serial.println("Password benar!");
        digitalWrite(relay, HIGH); // Nyalakan relay
        Blynk.virtualWrite(V0, HIGH);
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Password benar!");
      } else {
        Serial.println("Password salah!");
        digitalWrite(relay, LOW);
        Blynk.virtualWrite(V0, LOW);
        lcd.clear();
        lcd.setCursor(0, 1);
        lcd.print("Password salah!");
      }
     
    } else if (key == '*') { // Tombol '*' untuk reset input
      inputPassword = "";
    } else {
      inputPassword += key;
    }
  }
}