#include <Wire.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myServo;

int pos;
int udah;
String code = "1332121";
String inputCode = "";

void teks(String text, int col, int row) {
  lcd.setCursor(col, row);
  for (int i = 0; i < text.length(); i++) {
    lcd.print(text[i]); 
    delay(200);
  }
}

void addDigit(char digit) {
  if (inputCode.length() < 7) {
    inputCode += digit;
    lcd.setCursor(inputCode.length() - 1, 1);
    lcd.print(digit);
  }
}

void checkPassword() {
  lcd.clear();
  if (inputCode == code) {
    lcd.print("bener cuyy :D");
  } else {
    lcd.print("yah salah :(");
  }
  delay(2000);
  inputCode = "";
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Password:");
}

void setup() {
  pinMode(13, INPUT_PULLUP);
  pinMode(12, INPUT_PULLUP);
  pinMode(11, INPUT_PULLUP);
  pinMode(10, INPUT_PULLUP);
  pinMode(9, INPUT_PULLUP);
  myServo.attach(6);
  lcd.init();
  pos = 3;
  udah = 0;
  delay(1000);
  for (int i = 90; i > pos; i--) {
    myServo.write(i);
    if (i == pos) {
      break;
    }
    delay(30);
  }
  lcd.backlight();
  delay(3000);
  lcd.clear();
  teks("hai zaskia :D", 1, 0);
  delay(4000);
  lcd.clear();
  teks("maaf ya kalo aku", 0, 0);
  teks("telat ngasih", 2, 1);
  delay(700);
  lcd.clear();
  teks("hadiah ini ke", 1, 0);
  teks("kamu :(", 3, 1);
  delay(4000);
  lcd.clear();
  teks("btw, coba kamu", 1, 0);
  teks("ambil suratnya", 1, 1);
  delay(500);
  lcd.clear();
  teks("tapi jangan di", 1, 0);
  teks("buka dulu ya", 2, 1);
}

void loop() {
  if (digitalRead(9) == LOW && udah == 0) {
    lcd.clear();
    teks("kalo kamu mau", 1, 0);
    teks("dapat hadiahnya", 0, 1);
    delay(1000);
    lcd.clear();
    teks("kamu harus", 2, 0);
    teks("memasukkan kode", 0, 1);
    delay(4000);
    lcd.clear();
    teks("coba kamu", 3, 0);
    teks("buka suratnya :D", 0, 1);
    delay(6000);
    lcd.clear();
    teks("Password:", 0, 0);
    udah = 1;
  }
  if (digitalRead(9) == LOW && digitalRead(12) == LOW && udah == 1) {
    addDigit('1');
    delay(200);
  }
  if (digitalRead(9) == LOW && digitalRead(11) == LOW && udah == 1) {
    addDigit('2');
    delay(200);
  }
  if (digitalRead(9) == LOW && digitalRead(13) == LOW && udah == 1) {
    addDigit('3');
    delay(200);
  }
  if (digitalRead(9) == LOW && digitalRead(10) == LOW && udah == 1) {
    checkPassword();
    delay(200);
  }
}