Реализация хранилища клиентов в памяти

LawFirm/LawFirmListImplements/DataListSingleton.cs

@@ -14,11 +14,13 @@ namespace LawFirmListImplements
         public List<Blank> Blanks { get; set; }
         public List<Order> Orders { get; set; }
         public List<Document> Documents { get; set; }
+        public List<Client> Clients { get; set; }
         private DataListSingleton()
         {
             Blanks = new List<Blank>();
             Orders = new List<Order>();
             Documents = new List<Document>();
+            Clients= new List<Client>();
         }
         public static DataListSingleton GetInstance()
         {

LawFirm/LawFirmListImplements/Implements/ClientStorage.cs

@@ -0,0 +1,105 @@
+using LawFirmContracts.BindingModels;
+using LawFirmContracts.SearchModels;
+using LawFirmContracts.StorageContracts;
+using LawFirmContracts.ViewModels;
+using LawFirmListImplements.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LawFirmListImplements.Implements
+{
+    public class ClientStorage : IClientStorage
+    {
+        private readonly DataListSingleton _source;
+        public ClientStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+
+        public ClientViewModel? GetElement(ClientSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Email) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var client in _source.Clients)
+            {
+                if ((!string.IsNullOrEmpty(model.Email) && client.Email == model.Email) || (model.Id.HasValue && client.Id == model.Id))
+                {
+                    return client.GetViewModel;
+                }
+            }
+            return null;
+        }
+
+        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
+        {
+            var result = new List<ClientViewModel>();
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                return result;
+            }
+            var client = GetElement(model);
+            if (client != null) result.Add(client);
+            return result;
+        }
+
+        public List<ClientViewModel> GetFullList()
+        {
+            var result = new List<ClientViewModel>();
+            foreach (var client in _source.Clients)
+            {
+                result.Add(client.GetViewModel);
+            }
+            return result;
+        }
+
+        public ClientViewModel? Insert(ClientBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var client in _source.Clients)
+            {
+                if (model.Id <= client.Id)
+                {
+                    model.Id = client.Id + 1;
+                }
+            }
+            var res = Client.Create(model);
+            if (res != null)
+            {
+                _source.Clients.Add(res);
+            }
+            return res?.GetViewModel;
+        }
+
+        public ClientViewModel? Update(ClientBindingModel model)
+        {
+            foreach (var client in _source.Clients)
+            {
+                if (client.Id == model.Id)
+                {
+                    client.Update(model);
+                    return client.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ClientViewModel? Delete(ClientBindingModel model)
+        {
+            for (int i = 0; i < _source.Clients.Count; ++i)
+            {
+                if (_source.Clients[i].Id == model.Id)
+                {
+                    var element = _source.Clients[i];
+                    _source.Clients.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+
+    }
+}

LawFirm/LawFirmListImplements/Models/Client.cs

@@ -0,0 +1,56 @@
+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;
+
+namespace LawFirmListImplements.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 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,
+        };
+    }
+}