PIbd-22_Kozlova_A.A_Precast.../PrecastConcretePlant/PrecastConcretePlantFileImplement/DataFileSingleton.cs
2024-06-16 15:06:51 +04:00

58 lines
2.7 KiB
C#

using System.Xml.Linq;
using PrecastConcretePlantFileImplement.Models;
namespace PrecastConcretePlantFileImplement
{
internal class DataFileSingleton
{
private static DataFileSingleton? instance;
private readonly string ComponentFileName = "Component.xml";
private readonly string OrderFileName = "Order.xml";
private readonly string ReinforcedFileName = "Reinforced.xml";
private readonly string ShopFileName = "Shop.xml";
private readonly string ClientFileName = "Client.xml";
public List<Component> Components { get; private set; }
public List<Order> Orders { get; private set; }
public List<Reinforced> Reinforceds { get; private set; }
public List<Client> Clients { get; private set; }
public List<Shop> Shops { get; private set; }
public static DataFileSingleton GetInstance()
{
if (instance == null)
{
instance = new DataFileSingleton();
}
return instance;
}
public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
public void SaveReinforceds() => SaveData(Reinforceds, ReinforcedFileName, "Reinforceds", x => x.GetXElement);
public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
public void SaveClients() => SaveData(Clients, ClientFileName, "Clients", x => x.GetXElement);
public void SaveShops() => SaveData(Shops, ShopFileName, "Shops", x => x.GetXElement);
private DataFileSingleton()
{
Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
Reinforceds = LoadData(ReinforcedFileName, "Reinforced", x => Reinforced.Create(x)!)!;
Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
Shops = LoadData(ShopFileName, "Shop", x => Shop.Create(x)!)!;
Clients = LoadData(ClientFileName, "Client", x => Client.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);
}
}
}
}