package onlineFoodOrdering;

import java.util.List;

public class RestaurantService {

private static RestaurantService restaurantService=null;

private RestaurantService(){

}

public static RestaurantService getInstance(){

if(restaurantService==null){

restaurantService=new RestaurantService();

}

return restaurantService;

}

UserDao userDao=UserDao.getInstance();

public Restaurant registerRestaurant(String name,String pinCodes,String item,int price,int quantity){

if(price<=0 || quantity<0){

System.out.println("Invalid value for mandatory fields");

return null;

}

else if(name.isEmpty()){

System.out.println("invalid value for name");

return null;

}

return userDao.registerRestaurant(name, pinCodes, item, price, quantity);

}

public Review rateRestaurant(String name, Integer rating , String comment){

if(rating==null || rating<=0 || rating>5 ){

System.out.println("Invalid value for mandatory fields");

return null;

}

return userDao.rateRestaurant(name,rating,comment);

}

public Restaurant updateQuantity(String name, int quantity){

if(quantity<=0){

System.out.println("Invalid value for mandatory fields");

return null;

}

return userDao.updateQuantity(name,quantity);

}

public List<Restaurant> showRestaurant(String sortBy){

return userDao.showRestaurant(sortBy);

}

}