ConfectionaryFileImplement/Component.cs

@@ -0,0 +1,7 @@
+namespace ConfectionaryFileImplement
+{
+    public class Class1
+    {
+
+    }
+}

ConfectionaryFileImplement/ConfectioneryFileImplement.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

ConfectionaryFileImplement/DataFileSingleton.cs

@@ -0,0 +1,52 @@
+using ConfectioneryFileImplement.Models;
+using System.Xml.Linq;
+
+namespace ConfectioneryFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string PastryFileName = "Pastry.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Pastry> Pastrys { 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 SavePastrys() => SaveData(Pastrys, PastryFileName, "Pastrys", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x
+        => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x =>
+            Component.Create(x)!)!;
+            Pastrys = 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);
+            }
+        }
+    }
+}

ConfectionaryFileImplement/Order.cs

@@ -0,0 +1,76 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Enums;
+using ConfectioneryDataModels.Models;
+using System.Xml.Linq;
+
+namespace ConfectioneryFileImplement
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+
+        public int PastryId { get; private set; }
+
+        public int Count { get; private set; }
+
+        public double Sum { get; private set; }
+
+        public OrderStatus Status { get; private set; }
+
+        public DateTime DateCreate { get; private set; }
+
+        public DateTime? DateImplement { get; private set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                PastryId = model.PastryId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement,
+                Id = model.Id,
+            };
+        }
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            PastryId = model.PastryId;
+            Count = model.Count;
+            Sum = model.Sum;
+            Status = model.Status;
+            DateCreate = model.DateCreate;
+            DateImplement = model.DateImplement;
+            Id = model.Id;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            PastryId = PastryId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+            Id = Id,
+        };
+        public XElement GetXElement => new("Order",
+            new XAttribute("Id", Id),
+            new XElement("PastryId", PastryId),
+            new XElement("Count", Count),
+            new XElement("Sum", Sum.ToString()),
+            new XElement("Status", Status),
+            new XElement("DateCreate", DateCreate),
+            new XElement("DateImplement", DateImplement)
+        );
+    }
+}

ConfectionaryFileImplement/Pastry.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectionaryFileImplement
+{
+    internal class Pastry
+    {
+    }
+}

Confectionery.sln

@@ -9,9 +9,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryDataModels", "
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryContracts", "ConfectioneryContracts\ConfectioneryContracts.csproj", "{28EC043D-88E8-48DA-B5E8-2DE5659EB1BD}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConfectioneryBusinessLogic", "ConfectionaryBusinessLogic\ConfectioneryBusinessLogic.csproj", "{82EF78A8-98EC-490A-8D66-66909E5431E2}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryBusinessLogic", "ConfectionaryBusinessLogic\ConfectioneryBusinessLogic.csproj", "{82EF78A8-98EC-490A-8D66-66909E5431E2}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConfectioneryListImplement", "ConfectionaryListImplement\ConfectioneryListImplement.csproj", "{0A7B118B-9B7C-4796-9846-66026159723E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryListImplement", "ConfectionaryListImplement\ConfectioneryListImplement.csproj", "{0A7B118B-9B7C-4796-9846-66026159723E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConfectioneryFileImplement", "ConfectionaryFileImplement\ConfectioneryFileImplement.csproj", "{47A2EA59-4443-487E-85F4-AC49C04B7211}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +41,10 @@ Global
 		{0A7B118B-9B7C-4796-9846-66026159723E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{0A7B118B-9B7C-4796-9846-66026159723E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{0A7B118B-9B7C-4796-9846-66026159723E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{47A2EA59-4443-487E-85F4-AC49C04B7211}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{47A2EA59-4443-487E-85F4-AC49C04B7211}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{47A2EA59-4443-487E-85F4-AC49C04B7211}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{47A2EA59-4443-487E-85F4-AC49C04B7211}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE