//Program LCD 20x4 I2C
//Nisa Alvina 7A Labsky
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
Servo entrance;
Servo out;

int sensor_in;
int sensor_out;
int buzzer = 6;
int number = 0;
int left = 10;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(buzzer, OUTPUT);
  entrance.attach(5);
  out.attach(3);
  lcd.setCursor(5, 0);
  lcd.print("WELCOME TO");
  lcd.setCursor(6, 1);
  lcd.print("LABSKY'S");
  lcd.setCursor(4, 2);
  lcd.print("PARKING LOT!");
  delay(2000);
  lcd.clear();
  entrance.write(90);
}

void loop() {
  sensor_in = digitalRead(A0);
  sensor_out = digitalRead(A1);
  if (sensor_in == 1) {
    if (number < 10) {
      entrance.write(90);
      delay(1000);
      entrance.write(0);
      number++;
      left --;
    }
    else if (sensor_in == 0) {
      entrance.write(0);
    }

  }
  else if (sensor_in == 0) {
    entrance.write(0);
  }
  if (sensor_out == 1) {
    if (left < 10){
      out.write(90);
      delay(1000);
      out.write(0);
      number--;
      left++;
    }
  }



  lcd.setCursor(0, 0);
  lcd.print("Number of Cars: ");
  lcd.setCursor(0, 1);
  lcd.print(number);
  lcd.print("  ");
  lcd.setCursor(0, 2);
  lcd.print("Spaces Left:");
  lcd.setCursor(0, 3);
  lcd.print(left);
  lcd.print("  ");
}

//lcd.clear();
//  delay(250);
//  lcd.setCursor(3,1);
//  lcd.print("ROBOTIK Labsky");
//  delay(250);