#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C mylcd(0x27,16,2);
#include "OneButton.h"
// Setup a new OneButton on pin 16.  
OneButton button1(16, true);
// Setup a new OneButton on pin 27.  
OneButton button2(27, true);
#include <ESP32_Servo.h>
Servo myservo;
int servoPin = 13;
String password = "";
String correct_p = "-.-";  //The correct password for the password door

// setup code here, to run once:
void setup() {
  Serial.begin(115200);
  mylcd.init();
  mylcd.backlight();
  // link the button 1 functions.
  button1.attachClick(click1);
  button1.attachLongPressStop(longPressStop1);
  // link the button 2 functions.
  button2.attachClick(click2);
  button2.attachLongPressStop(longPressStop2);

  myservo.attach(servoPin);
  mylcd.setCursor(0, 0);
  mylcd.print("Enter password");
}

void loop() {
  // keep watching the push buttons:
  button1.tick();
  button2.tick();
  delay(10);
}

// ----- button 1 callback functions
// This function will be called when the button1 was pressed 1 time (and no 2. button press followed).
void click1() {
  Serial.print(".");
  password = password + '.';
  mylcd.setCursor(0, 1);
  mylcd.print(password);
} // click1

// This function will be called once, when the button1 is released after being pressed for a long time.
void longPressStop1() {
  Serial.print("-");
  password = password + '-';
  mylcd.setCursor(0, 1);
  mylcd.print(password);
} // longPressStop1

// ... and the same for button 2:
void click2() {
  Serial.println(password);
  if(password == correct_p)
  {
    myservo.write(180);  //Open the door if the password is correct
    mylcd.clear();
    mylcd.setCursor(0, 0);
    mylcd.print("open");
  }
  else
  {
    mylcd.clear();
    mylcd.setCursor(0, 0);
    mylcd.print("error");
    delay(2000);
    mylcd.clear();
    mylcd.setCursor(0, 0);
    mylcd.print("input again");
  }
  password = "";
} // click2

void longPressStop2() {
  //Serial.println("Button 2 longPress stop");
   myservo.write(0);  //Close the door
   mylcd.clear();
   mylcd.setCursor(0, 0);
   mylcd.print("close");
} // longPressStop2