55 lines
2.2 KiB
C#
55 lines
2.2 KiB
C#
using ConfectioneryFileImplement.Models;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
using System.Xml.Linq;
|
|
|
|
namespace ConfectioneryFileImplement
|
|
{
|
|
public class DataFileSingleton
|
|
{
|
|
private static DataFileSingleton? instance;
|
|
private readonly string IngredientFileName = "Ingredient.xml";
|
|
private readonly string OrderFileName = "Order.xml";
|
|
private readonly string PastryFileName = "Pastry.xml";
|
|
public List<Ingredient> Ingredients { get; private set; }
|
|
public List<Order> Orders { get; private set; }
|
|
public List<Pastry> Pastries { get; private set; }
|
|
public static DataFileSingleton GetInstance()
|
|
{
|
|
if (instance == null)
|
|
{
|
|
instance = new DataFileSingleton();
|
|
}
|
|
return instance;
|
|
}
|
|
public void SaveIngredients() => SaveData(Ingredients, IngredientFileName, "Ingredients", x => x.GetXElement);
|
|
public void SavePastries() => SaveData(Pastries, PastryFileName, "Pastries", x => x.GetXElement);
|
|
public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
|
|
private DataFileSingleton()
|
|
{
|
|
Ingredients = LoadData(IngredientFileName, "Ingredient", x => Ingredient.Create(x)!)!;
|
|
Pastries = LoadData(PastryFileName, "Pastry", x => Pastry.Create(x)!)!;
|
|
Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
|
|
}
|
|
private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
|
|
{
|
|
if (File.Exists(filename))
|
|
{
|
|
return XDocument.Load(filename)?.Root?.Elements(xmlNodeName)?.Select(selectFunction)?.ToList();
|
|
}
|
|
return new List<T>();
|
|
}
|
|
private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
|
|
{
|
|
if (data != null)
|
|
{
|
|
new XDocument(new XElement(xmlNodeName, data.Select(selectFunction).ToArray())).Save(filename);
|
|
}
|
|
}
|
|
}
|
|
}
|