Реализация хранилища клиентов в файле

LawFirm/LawFirmFileImplement/DataFileSingleton.cs

@@ -15,9 +15,11 @@ namespace LawFirmFileImplement
         private readonly string BlankFileName = "Blank.xml";
         private readonly string OrderFileName = "Order.xml";
         private readonly string DocumentFileName = "Document.xml";
+        private readonly string ClientFileName = "Client.xml";
         public List<Blank> Blanks { get; private set; }
         public List<Order> Orders { get; private set; }
         public List<Document> Documents { get; private set; }
+        public List<Client> Clients { get; private set; }
         public static DataFileSingleton GetInstance()
         {
             if (instance == null)
@@ -29,11 +31,13 @@ namespace LawFirmFileImplement
         public void SaveBlanks() => SaveData(Blanks, BlankFileName, "Blanks", x => x.GetXElement);
         public void SaveDocuments() => SaveData(Documents, DocumentFileName, "Documents", 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()
         {
             Blanks = LoadData(BlankFileName, "Blank", x => Blank.Create(x)!)!;
             Documents = LoadData(DocumentFileName, "Document", x => Document.Create(x)!)!;
             Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+            Clients = LoadData(ClientFileName, "Client", x => Client.Create(x)!)!;
         }
         private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
         {

LawFirm/LawFirmFileImplement/Implements/ClientStorage.cs

@@ -0,0 +1,86 @@
+using LawFirmContracts.BindingModels;
+using LawFirmContracts.SearchModels;
+using LawFirmContracts.StorageContracts;
+using LawFirmContracts.ViewModels;
+using LawFirmFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LawFirmFileImplement.Implements
+{
+    public class ClientStorage : IClientStorage
+    {
+        private readonly DataFileSingleton source;
+        public ClientStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        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 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 List<ClientViewModel> GetFullList()
+        {
+            return source.Clients.Select(x => x.GetViewModel).ToList();
+        }
+
+        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 client = source.Clients.FirstOrDefault(x => x.Id == model.Id);
+            if (client == null)
+            {
+                return null;
+            }
+            source.Clients.Remove(client);
+            source.SaveClients();
+            return client?.GetViewModel;
+        }
+    }
+}

LawFirm/LawFirmFileImplement/Models/Client.cs

@@ -0,0 +1,79 @@
+using LawFirmContracts.BindingModels;
+using LawFirmContracts.ViewModels;
+using LawFirmDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace LawFirmFileImplement.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()
+            {
+                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()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ClientFIO = element.Element("FIO")!.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("FIO", ClientFIO),
+            new XElement("Email", Email),
+            new XElement("Password", Password)
+        );
+    }
+}