#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <ESP32Servo.h>

#define SERVO_PIN 12 // ESP32 pin GPIO26 connected to servo motor

Servo servoMotor;

// set the LCD number of columns and rows
int lcdColumns = 16;
int lcdRows = 2;
int Buffer = 14;
int Lock = 27;
int InSideSensor = 1;
int Interval = 15000;
unsigned long previues = 0;

// set LCD address, number of columns and rows
// if you don't know your display address, run an I2C scanner sketch
LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);

#define ROW_NUM     4 // four rows
#define COLUMN_NUM  3 // three columns

char keys[ROW_NUM][COLUMN_NUM] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'},
  {'*', '0', '#'}
};

byte pin_rows[ROW_NUM] = {23, 19, 18, 5}; // GPIO18, GPIO5, GPIO17, GPIO16 connect to the row pins
byte pin_column[COLUMN_NUM] = {4, 2, 15};  // GPIO4, GPIO0, GPIO2 connect to the column pins

Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );

void setup() {
  Serial.begin(115200);
  pinMode(Buffer, OUTPUT);
  pinMode(Lock, OUTPUT);
  servoMotor.attach(SERVO_PIN);
  // initialize LCD
  lcd.init();
  // turn on LCD backlight
  lcd.backlight();
}

int ServoPos = 90;
String InputPassword;
String Password = "1234";
bool AutoClose = false;
bool setPassword = false;
bool setingPassword = false;
String ConfirmPassword;

void loop() {

  char key = keypad.getKey();
  if (!setPassword) {
    lcd.setCursor(0, 0);
    lcd.print("Input Password");
  }
  if (key) {
    if (key != '*' && !setPassword) {
      InputPassword += key;
      lcd.setCursor(0, 1);
      lcd.print(InputPassword);
    }
    if (key == '*' && !setPassword) {
      lcd.clear();
      InputPassword = "";
      lcd.setCursor(0, 1);
      lcd.print(InputPassword);
    }
    if (key == '#' || setPassword) {
      setPassword = true;
      if (key != '#') {
        ConfirmPassword += key;
      }
      if (!setingPassword) {
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Old Password : ");
        lcd.setCursor(0, 1);
        lcd.print(ConfirmPassword);
        if (ConfirmPassword == Password) {
          setingPassword = true;
          ConfirmPassword = "";
          InputPassword = "";
            Serial.println("Go to New Password");
        }
      }
      if (setingPassword) {
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("New Password : ");
        lcd.setCursor(0, 1);
        if (key != '#' && key != '*' ){
          InputPassword += key;
        }
        lcd.print(InputPassword);
        if (key == '*') {
          lcd.clear();
          lcd.setCursor(0, 0);
          lcd.print("Password reset");
          lcd.setCursor(0, 1);
          lcd.print("Successfuly <3");
          Password = InputPassword;
          InputPassword = "";
          setingPassword = false;
          setPassword = false;
          delay(100);
          lcd.clear();
            Serial.println(Password);
        }
      }

    }
  }
  if (InputPassword == Password) {
    for (; ServoPos <= 180 ; ServoPos++) {
      if (ServoPos == 90) {
        digitalWrite(Lock, HIGH);
        digitalWrite(Buffer, HIGH);
        delay(100);
        digitalWrite(Buffer, LOW);
      }
      if (ServoPos <= 130 && ServoPos >= 90) {
        digitalWrite(Lock, LOW);
      }
      servoMotor.write(ServoPos);
      delay((10));
      AutoClose = false;
    }
    if (AutoClose == true) {
      for (; ServoPos >= 90 ; ServoPos--) {
        servoMotor.write(ServoPos);
        if (ServoPos == 180 && ServoPos >= 160) {
          digitalWrite(Buffer, HIGH);
        }
        if (ServoPos == 160) {
          digitalWrite(Buffer, LOW);
        }
        delay(10);
      }
      InputPassword = "";
      lcd.clear();
      AutoClose = false;
    }
    if (millis() - previues >= Interval) {
      AutoClose  = true;
      previues = millis();
    } else {
      AutoClose = false;

    }
  }

}