в хранилище FileImplement изменено для сохранения клиента

SushiBarFileImplement/DataFileSingleton.cs

@@ -13,9 +13,12 @@ namespace SushiBarFileImplement
 
         private readonly string SushiFileName = "Sushi.xml";
 
+        private readonly string ClientFileName = "Client.xml";
+
         public List<Component> Components { get; private set; }
         public List<Order> Orders { get; private set; }
         public List<Sushi> Sushis { get; private set; }
+        public List<Client> Clients { get; private set; }
 
         public static DataFileSingleton GetInstance()
         {
@@ -29,12 +32,14 @@ namespace SushiBarFileImplement
         public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
         public void SaveSushis() => SaveData(Sushis, SushiFileName, "Sushis", x => x.GetXElement);
         public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        public void SaveClients() => SaveData(Clients, ClientFileName, "Clients", x => x.GetXElement);
 
         private DataFileSingleton()
         {
             Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
             Sushis = LoadData(SushiFileName, "Sushi", x => Sushi.Create(x)!)!;
             Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+            Clients = LoadData(ClientFileName, "Order", x => Client.Create(x)!)!;
         }
 
         private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)

SushiBarFileImplement/Implements/ClientStorage.cs

@@ -0,0 +1,71 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.SearchModel;
+using SushiBarContracts.ViewModels;
+using SushiBarFileImplement.Models;
+
+namespace SushiBarFileImplement.Implements
+{
+    public class ClientStorage
+    {
+        private readonly DataFileSingleton source;
+        public ClientStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<ClientViewModel> GetFullList()
+        {
+            return source.Clients.Select(x => x.GetViewModel).ToList();
+        }
+        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                return new();
+            }
+            return source.Clients.Where(x => x.Email.Contains(model.Email)).Select(x => x.GetViewModel).ToList();
+        }
+        public ClientViewModel? GetElement(ClientSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Email) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Clients.FirstOrDefault(x => (!string.IsNullOrEmpty(model.Email) &&
+            x.Email == model.Email) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public ClientViewModel? Insert(ClientBindingModel model)
+        {
+            model.Id = source.Clients.Count > 0 ? source.Clients.Max(x => x.Id) + 1 : 1;
+            var newClient = Client.Create(model);
+            if (newClient == null)
+            {
+                return null;
+            }
+            source.Clients.Add(newClient);
+            source.SaveClients();
+            return newClient.GetViewModel;
+        }
+        public ClientViewModel? Update(ClientBindingModel model)
+        {
+            var client = source.Clients.FirstOrDefault(x => x.Id == model.Id);
+            if (client == null)
+            {
+                return null;
+            }
+            client.Update(model);
+            source.SaveClients();
+            return client.GetViewModel;
+        }
+        public ClientViewModel? Delete(ClientBindingModel model)
+        {
+            var element = source.Clients.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Clients.Remove(element);
+                source.SaveClients();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

SushiBarFileImplement/Models/Client.cs

@@ -0,0 +1,67 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.ViewModels;
+using SushiBarDataModels;
+using System.Xml.Linq;
+
+namespace SushiBarFileImplement.Models
+{
+    public class Client : IClientModel
+    {
+        public int Id { get; private set; }
+        public string ClientFIO { get; private set; } = string.Empty;
+        public string Email { get; private set; } = string.Empty;
+        public string Password { get; private set; } = string.Empty;
+        public static Client? Create(ClientBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Client()
+            {
+                Id = model.Id,
+                ClientFIO = model.ClientFIO,
+                Email = model.Email,
+                Password = model.Password
+            };
+        }
+        public static Client? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Client()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ClientFIO = element.Element("ClientFIO")!.Value,
+                Email = element.Element("Email")!.Value,
+                Password = element.Element("Password")!.Value,
+            };
+        }
+        public void Update(ClientBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ClientFIO = model.ClientFIO;
+            Email = model.Email;
+            Password = model.Password;
+        }
+        public ClientViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ClientFIO = ClientFIO,
+            Email = Email,
+            Password = Password
+        };
+        public XElement GetXElement =>
+            new("Client",
+            new XAttribute("Id", Id),
+            new XElement("ClientFIO", ClientFIO),
+            new XElement("Email", Email),
+            new XElement("Password", Password)
+            );
+    }
+}

SushiBarFileImplement/Models/Order.cs

@@ -10,6 +10,7 @@ namespace SushiBarFileImplement.Models
     {
         public int Id { get; private set; }
         public int SushiId { get; private set; }
+        public int ClientId { get; private set; }
         public int Count { get; private set; }
         public double Sum { get; private set; }
         public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;
@@ -27,6 +28,7 @@ namespace SushiBarFileImplement.Models
                 SushiId = model.SushiId,
                 Count = model.Count,
                 Sum = model.Sum,
+                ClientId = model.ClientId,
                 Status = model.Status,
                 DateCreate = model.DateCreate,
                 DateImplement = model.DateImplement
@@ -42,6 +44,7 @@ namespace SushiBarFileImplement.Models
             {
                 Id = Convert.ToInt32(element.Attribute("Id")!.Value),
                 SushiId = Convert.ToInt32(element.Element("SushiId")!.Value),
+                ClientId = Convert.ToInt32(element.Element("ClientId")!.Value),
                 Count = Convert.ToInt32(element.Element("Count")!.Value),
                 Sum = Convert.ToDouble(element.Element("Sum")!.Value),
                 Status = (OrderStatus)Enum.Parse(typeof(OrderStatus), element.Element("Status")!.Value),
@@ -68,11 +71,13 @@ namespace SushiBarFileImplement.Models
             Status = Status,
             DateCreate = DateCreate,
             DateImplement = DateImplement,
+            ClientId = ClientId,
         };
         public XElement GetXElement =>
             new("Order",
             new XAttribute("Id", Id),
             new XElement("SushiId", SushiId.ToString()),
+            new XElement("ClientId", ClientId.ToString()),
             new XElement("Count", SushiId.ToString()),
             new XElement("Sum", Sum.ToString()),
             new XElement("Status", Status.ToString()),