add contracts, business logic & data models

BookShop/BookShop.sln

@@ -3,7 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.5.33530.505
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BookShop", "BookShop\BookShop.csproj", "{946EC661-9CF9-43DA-9C97-A2CE481406D2}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BookShopView", "BookShopView\BookShopView.csproj", "{1455C2BC-5C22-4B93-8954-ACC01353BD24}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BookShopDataModels", "BookShopDataModels\BookShopDataModels.csproj", "{032BDFC0-6AAF-4A75-A9AE-B24C85A4679C}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -11,15 +13,19 @@ Global
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{946EC661-9CF9-43DA-9C97-A2CE481406D2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1455C2BC-5C22-4B93-8954-ACC01353BD24}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{946EC661-9CF9-43DA-9C97-A2CE481406D2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1455C2BC-5C22-4B93-8954-ACC01353BD24}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{946EC661-9CF9-43DA-9C97-A2CE481406D2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1455C2BC-5C22-4B93-8954-ACC01353BD24}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{946EC661-9CF9-43DA-9C97-A2CE481406D2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1455C2BC-5C22-4B93-8954-ACC01353BD24}.Release|Any CPU.Build.0 = Release|Any CPU
+		{032BDFC0-6AAF-4A75-A9AE-B24C85A4679C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{032BDFC0-6AAF-4A75-A9AE-B24C85A4679C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{032BDFC0-6AAF-4A75-A9AE-B24C85A4679C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{032BDFC0-6AAF-4A75-A9AE-B24C85A4679C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {F2A3B3D2-EC41-4B24-B6F1-95D5692C7561}
+		SolutionGuid = {CC21F821-D99C-4781-AD62-0FA7B3BA0F82}
 	EndGlobalSection
 EndGlobal

BookShop/BookShopBusinessLogic/BookShopBusinessLogic.csproj

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

BookShop/BookShopBusinessLogic/BusinessLogics/AuthorLogic.cs

@@ -0,0 +1,116 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopContracts.SearchModels;
+using BookShopContracts.StoragesContracts;
+using BookShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace BookShopBusinessLogic.BusinessLogics
+{
+    public class AuthorLogic : IAuthorLogic
+    {
+        private readonly ILogger _logger;
+        
+        private readonly IAuthorStorage _authorStorage;
+        
+        public AuthorLogic(ILogger<AuthorLogic> logger, IAuthorStorage authorStorage)
+        {
+            _logger = logger;
+            _authorStorage = authorStorage;
+        }
+        
+        public bool Create(AuthorBindingModel model)
+        {
+            CheckModel(model);
+            if (_authorStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(AuthorBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_authorStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public AuthorViewModel? ReadElement(AuthorSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. AuthorSurname: {AuthorSurname}. AuthorName: {AuthorName}. Id: {Id}.", model.AuthorSurname, model.AuthorName, model.Id);
+            var element = _authorStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
+            return element;
+        }
+
+        public List<AuthorViewModel>? ReadList(AuthorSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. AuthorSurname: {AuthorSurname}. AuthorName: {AuthorName}. Id: {Id}.", model?.AuthorSurname, model?.AuthorName, model?.Id);
+            var list = model == null ? _authorStorage.GetFullList() : _authorStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public bool Update(AuthorBindingModel model)
+        {
+            CheckModel(model);
+            if (_authorStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(AuthorBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.AuthorSurname))
+            {
+                throw new ArgumentNullException("Нет фамилии клиента", nameof(model.AuthorSurname));
+            }
+            if (string.IsNullOrEmpty(model.AuthorName))
+            {
+                throw new ArgumentNullException("Нет имени клиента", nameof(model.AuthorName));
+            }
+            _logger.LogInformation("Author. AuthorSurname: {AuthorSurname}. AuthorName: {AuthorName}. AuthorPatronymic: {AuthorPatronymic}. Id: {Id}.", model.AuthorSurname, model.AuthorName, model.AuthorPatronymic, model.Id);
+            var element = _authorStorage.GetElement(new AuthorSearchModel
+            {
+                AuthorSurname = model.AuthorSurname,
+                AuthorName = model.AuthorName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Автор с таким ФИО уже есть");
+            }
+        }
+    }
+}

BookShop/BookShopBusinessLogic/BusinessLogics/BookLogic.cs

@@ -0,0 +1,129 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopContracts.SearchModels;
+using BookShopContracts.StoragesContracts;
+using BookShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace BookShopBusinessLogic.BusinessLogics
+{
+    public class BookLogic : IBookLogic
+    {
+        private readonly ILogger _logger;
+        
+        private readonly IBookStorage _bookStorage;
+        
+        public BookLogic(ILogger<BookLogic> logger, IBookStorage bookStorage)
+        {
+            _logger = logger;
+            _bookStorage = bookStorage;
+        }
+        
+        public bool Create(BookBindingModel model)
+        {
+            CheckModel(model);
+            if (_bookStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(BookBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_bookStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public BookViewModel? ReadElement(BookSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. BookName: {BookName}. Id: {Id}.", model.BookName, model.Id);
+            var element = _bookStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
+            return element;
+        }
+
+        public List<BookViewModel>? ReadList(BookSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. BookName: {BookName}. Id: {Id}.", model?.BookName, model?.Id);
+            var list = model == null ? _bookStorage.GetFullList() : _bookStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public string TestInsertList(int num)
+        {
+            throw new NotImplementedException();
+        }
+
+        public string TestReadList(int num)
+        {
+            return _bookStorage.TestReadList(num);
+        }
+        
+        public bool Update(BookBindingModel model)
+        {
+            CheckModel(model);
+            if (_bookStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(BookBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.BookName))
+            {
+                throw new ArgumentNullException("Нет названия книги", nameof(model.BookName));
+            }
+            if (model.Count < 0)
+            {
+                throw new ArgumentNullException("Количество не может быть меньше 0", nameof(model.BookName));
+            }
+            if (model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Стоимость не может быть меньше 0", nameof(model.BookName));
+            }
+            _logger.LogInformation("Book. BookName: {BookName}. Cost: {Cost}. Id: {Id}.", model.BookName, model.Cost, model.Id);
+            var element = _bookStorage.GetElement(new BookSearchModel
+            {
+                BookName = model.BookName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Книга с таким названием уже есть");
+            }
+        }
+    }
+}

BookShop/BookShopBusinessLogic/BusinessLogics/ClientLogic.cs

@@ -0,0 +1,119 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopContracts.SearchModels;
+using BookShopContracts.StoragesContracts;
+using BookShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace BookShopBusinessLogic.BusinessLogics
+{
+    public class ClientLogic : IClientLogic
+    {
+        private readonly ILogger _logger;
+        
+        private readonly IClientStorage _clientStorage;
+        
+        public ClientLogic(ILogger<ClientLogic> logger, IClientStorage clientStorage)
+        {
+            _logger = logger;
+            _clientStorage = clientStorage;
+        }
+        
+        public bool Create(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ClientBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_clientStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public ClientViewModel? ReadElement(ClientSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ClientSurname: {ClientSurname}. ClientName: {ClientName}. ClientPatronymic: {ClientPatronymic}. Email: {Email}. Id: {Id}.", model.ClientSurname, model.ClientName, model.ClientPatronymic, model.Email, model.Id);
+            var element = _clientStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
+            return element;
+        }
+
+        public List<ClientViewModel>? ReadList(ClientSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ClientSurname: {ClientSurname}. ClientName: {ClientName}. ClientPatronymic: {ClientPatronymic}. Email: {Email}. Id: {Id}.", model?.ClientSurname, model?.ClientName, model?.ClientPatronymic, model?.Email, model?.Id);
+            var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public bool Update(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ClientBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ClientSurname))
+            {
+                throw new ArgumentNullException("Нет фамилии клиента", nameof(model.ClientSurname));
+            }
+            if (string.IsNullOrEmpty(model.ClientName))
+            {
+                throw new ArgumentNullException("Нет имени клиента", nameof(model.ClientName));
+            }
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                throw new ArgumentNullException("Нет почты клиента", nameof(model.Email));
+            }
+            _logger.LogInformation("Client. ClientSurname: {ClientSurname}. ClientName: {ClientName}. ClientPatronymic: {ClientPatronymic}. Email: {Email}. Id: {Id}.", model.ClientSurname, model.ClientName, model.ClientPatronymic, model.Email, model.Id);
+            var element = _clientStorage.GetElement(new ClientSearchModel
+            {
+                Email = model.Email
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Клиент с такой почтой уже есть");
+            }
+        }
+    }
+}

BookShop/BookShopBusinessLogic/BusinessLogics/GenreLogic.cs

@@ -0,0 +1,111 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopContracts.SearchModels;
+using BookShopContracts.StoragesContracts;
+using BookShopContracts.ViewModels;
+using BookShopDataModels.Models;
+using Microsoft.Extensions.Logging;
+
+namespace BookShopBusinessLogic.BusinessLogics
+{
+    public class GenreLogic : IGenreLogic
+    {
+        private readonly ILogger _logger;
+        
+        private readonly IGenreStorage _genreStorage;
+        public GenreLogic(ILogger<GenreLogic> logger, IGenreStorage genreStorage)
+        {
+            _logger = logger;
+            _genreStorage = genreStorage;
+        }
+        
+        public bool Create(GenreBindingModel model)
+        {
+            CheckModel(model);
+            if (_genreStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(GenreBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_genreStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public GenreViewModel? ReadElement(GenreSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. GenreName: {GenreName}. Id: {Id}.", model.GenreName, model.Id);
+            var element = _genreStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
+            return element;
+        }
+
+        public List<GenreViewModel>? ReadList(GenreSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. GenreName: {GenreName}. Id: {Id}.", model?.GenreName, model?.Id);
+            var list = model == null ? _genreStorage.GetFullList() : _genreStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
+            return list;
+        }
+
+        public bool Update(GenreBindingModel model)
+        {
+            CheckModel(model);
+            if (_genreStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(GenreBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.GenreName))
+            {
+                throw new ArgumentNullException("Нет названия жанра", nameof(model.GenreName));
+            }
+            _logger.LogInformation("Genre. GenreName: {GenreName}. Id: {Id}.", model.GenreName, model.Id);
+            var element = _genreStorage.GetElement(new GenreSearchModel
+            {
+                GenreName = model.GenreName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Такой жанр уже есть");
+            }
+        }
+    }
+}

BookShop/BookShopBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -0,0 +1,102 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopContracts.SearchModels;
+using BookShopContracts.StoragesContracts;
+using BookShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace BookShopBusinessLogic.BusinessLogics
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly ILogger _logger;
+        
+        private readonly IOrderStorage _orderStorage;
+
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        {
+            _logger = logger;
+            _orderStorage = orderStorage;
+        }
+
+        public bool Create(OrderBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_orderStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            _logger.LogInformation("Order. OrderId:{Id}", model?.Id);
+
+            var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (model.BookId < 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор книги", nameof(model.BookId));
+            }
+
+            if (model.Count <= 0)
+            {
+                throw new ArgumentNullException("Количество книг в заказе должно быть больше 0", nameof(model.Count));
+            }
+            if (model.Sum <= 0)
+            {
+                throw new ArgumentNullException("Сумма заказа должна быть больше 0", nameof(model.Sum));
+            }
+
+            _logger.LogInformation("Order. OrderId:{Id}.Sum:{ Sum}. Id: { BookId}", model.Id, model.Sum, model.BookId);
+        }
+        
+        public OrderViewModel? ReadElement(OrderSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. Id:{ Id}", model.Id);
+
+            var element = _orderStorage.GetElement(model);
+
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+
+                return null;
+            }
+
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+
+            return element;
+        }
+    }
+}

BookShop/BookShopContracts/BindingModels/AuthorBindingModel.cs

@@ -0,0 +1,15 @@
+using BookShopDataModels.Models;
+
+namespace BookShopContracts.BindingModels
+{
+    public class AuthorBindingModel : IAuthorModel
+    {
+        public int Id { get; set; }
+
+        public string AuthorSurname { get; set; } = string.Empty;
+
+        public string AuthorName { get; set; } = string.Empty;
+
+        public string AuthorPatronymic { get; set; } = string.Empty;
+    }
+}

BookShop/BookShopContracts/BindingModels/BookBindingModel.cs

@@ -0,0 +1,28 @@
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.BindingModels
+{
+    public class BookBindingModel : IBookModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название")]
+
+        public string BookName { get; set; } = string.Empty;
+        [DisplayName("Стоимость")]
+
+        public double Cost { get; set; }
+        [DisplayName("Количество")]
+
+        public int Count { get; set; }
+        [DisplayName("Жанр")]
+
+        public int GenreId { get; set; }
+
+        public Dictionary<int, IAuthorModel> BookAuthors
+        {
+            get;
+            set;
+        } = new();
+    }
+}

BookShop/BookShopContracts/BindingModels/ClientBindingModel.cs

@@ -0,0 +1,18 @@
+using BookShopDataModels.Models;
+
+namespace BookShopContracts.BindingModels
+{
+    public class ClientBindingModel : IClientModel
+    {
+        public int Id { get; set; }
+
+        public string ClientSurname { get; set; } = string.Empty;
+
+        public string ClientName { get; set; } = string.Empty;
+
+        public string ClientPatronymic { get; set; } = string.Empty;
+
+        public string Email { get; set; } = string.Empty;
+
+    }
+}

BookShop/BookShopContracts/BindingModels/GenreBindingModel.cs

@@ -0,0 +1,11 @@
+using BookShopDataModels.Models;
+
+namespace BookShopContracts.BindingModels
+{
+    public class GenreBindingModel : IGenreModel
+    {
+        public int Id { get; set; }
+
+        public string GenreName { get; set; } = string.Empty;
+    }
+}

BookShop/BookShopContracts/BindingModels/OrderBindingModel.cs

@@ -0,0 +1,23 @@
+using BookShopDataModels.Models;
+
+namespace BookShopContracts.BindingModels
+{
+    public class OrderBindingModel : IOrderModel
+    {
+        public int Id { get; set; }
+
+        public int BookId { get; set; }
+
+        public string BookName { get; set; } = string.Empty;
+
+        public int ClientId { get; set; }
+
+        public string ClientName { get; set; } = string.Empty;
+
+        public int Count { get; set; }
+
+        public double Sum { get; set; }
+
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+    }
+}

BookShop/BookShopContracts/BookShopContracts.csproj

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

BookShop/BookShopContracts/BusinessLogicsContracts/IAuthorLogic.cs

@@ -0,0 +1,19 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.BusinessLogicsContracts
+{
+    public interface IAuthorLogic
+    {
+        List<AuthorViewModel>? ReadList(AuthorSearchModel? model);
+
+        AuthorViewModel? ReadElement(AuthorSearchModel model);
+
+        bool Create(AuthorBindingModel model);
+
+        bool Update(AuthorBindingModel model);
+
+        bool Delete(AuthorBindingModel model);
+    }
+}

BookShop/BookShopContracts/BusinessLogicsContracts/IBookLogic.cs

@@ -0,0 +1,23 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.BusinessLogicsContracts
+{
+    public interface IBookLogic
+    {
+        List<BookViewModel>? ReadList(BookSearchModel? model);
+
+        BookViewModel? ReadElement(BookSearchModel model);
+        
+        bool Create(BookBindingModel model);
+        
+        bool Update(BookBindingModel model);
+        
+        bool Delete(BookBindingModel model);
+        
+        string TestInsertList(int num);
+        
+        string TestReadList(int num);
+    }
+}

BookShop/BookShopContracts/BusinessLogicsContracts/IClientLogic.cs

@@ -0,0 +1,19 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.BusinessLogicsContracts
+{
+    public interface IClientLogic
+    {
+        List<ClientViewModel>? ReadList(ClientSearchModel? model);
+        
+        ClientViewModel? ReadElement(ClientSearchModel model);
+        
+        bool Create(ClientBindingModel model);
+        
+        bool Update(ClientBindingModel model);
+        
+        bool Delete(ClientBindingModel model);
+    }
+}

BookShop/BookShopContracts/BusinessLogicsContracts/IGenreLogic.cs

@@ -0,0 +1,19 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.BusinessLogicsContracts
+{
+    public interface IGenreLogic
+    {
+        List<GenreViewModel>? ReadList(GenreSearchModel? model);
+        
+        GenreViewModel? ReadElement(GenreSearchModel model);
+        
+        bool Create(GenreBindingModel model);
+        
+        bool Update(GenreBindingModel model);
+        
+        bool Delete(GenreBindingModel model);
+    }
+}

BookShop/BookShopContracts/BusinessLogicsContracts/IOrderLogic.cs

@@ -0,0 +1,15 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.BusinessLogicsContracts
+{
+    public interface IOrderLogic
+    {
+        List<OrderViewModel>? ReadList(OrderSearchModel? model);
+        
+        OrderViewModel? ReadElement(OrderSearchModel model);
+        
+        bool Create(OrderBindingModel model);
+    }
+}

BookShop/BookShopContracts/SearchModels/AuthorSearchModel.cs

@@ -0,0 +1,11 @@
+namespace BookShopContracts.SearchModels
+{
+    public class AuthorSearchModel
+    {
+        public int? Id { get; set; }
+        
+        public string? AuthorSurname { get; set; }
+        
+        public string? AuthorName { get; set; }
+    }
+}

BookShop/BookShopContracts/SearchModels/BookSearchModel.cs

@@ -0,0 +1,9 @@
+namespace BookShopContracts.SearchModels
+{
+    public class BookSearchModel
+    {
+        public int? Id { get; set; }
+        
+        public string? BookName { get; set; }
+    }
+}

BookShop/BookShopContracts/SearchModels/ClientSearchModel.cs

@@ -0,0 +1,15 @@
+namespace BookShopContracts.SearchModels
+{
+    public class ClientSearchModel
+    {
+        public int? Id { get; set; }
+        
+        public string? ClientSurname { get; set; }
+        
+        public string? ClientName { get; set; }
+        
+        public string? ClientPatronymic { get; set; }
+        
+        public string? Email { get; set; }
+    }
+}

BookShop/BookShopContracts/SearchModels/GenreSearchModel.cs

@@ -0,0 +1,9 @@
+namespace BookShopContracts.SearchModels
+{
+    public class GenreSearchModel
+    {
+        public int? Id { get; set; }
+        
+        public string? GenreName { get; set; }
+    }
+}

BookShop/BookShopContracts/SearchModels/OrderSearchModel.cs

@@ -0,0 +1,11 @@
+namespace BookShopContracts.SearchModels
+{
+    public class OrderSearchModel
+    {
+        public int? Id { get; set; }
+        
+        public int? ClientId { get; set; }
+        
+        public DateTime? DateCreate { get; set; }
+    }
+}

BookShop/BookShopContracts/StoragesContracts/IAuthorStorage.cs

@@ -0,0 +1,21 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.StoragesContracts
+{
+    public interface IAuthorStorage
+    {
+        List<AuthorViewModel> GetFullList();
+        
+        List<AuthorViewModel> GetFilteredList(AuthorSearchModel model);
+        
+        AuthorViewModel? GetElement(AuthorSearchModel model);
+        
+        AuthorViewModel? Insert(AuthorBindingModel model);
+        
+        AuthorViewModel? Update(AuthorBindingModel model);
+        
+        AuthorViewModel? Delete(AuthorBindingModel model);
+    }
+}

BookShop/BookShopContracts/StoragesContracts/IBookStorage.cs

@@ -0,0 +1,25 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.StoragesContracts
+{
+    public interface IBookStorage
+    {
+        List<BookViewModel> GetFullList();
+        
+        List<BookViewModel> GetFilteredList(BookSearchModel model);
+        
+        BookViewModel? GetElement(BookSearchModel model);
+        
+        BookViewModel? Insert(BookBindingModel model);
+        
+        BookViewModel? Update(BookBindingModel model);
+        
+        BookViewModel? Delete(BookBindingModel model);
+        
+        string TestInsertList(int num);
+        
+        string TestReadList(int num);
+    }
+}

BookShop/BookShopContracts/StoragesContracts/IClientStorage.cs

@@ -0,0 +1,21 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.StoragesContracts
+{
+    public interface IClientStorage
+    {
+        List<ClientViewModel> GetFullList();
+        
+        List<ClientViewModel> GetFilteredList(ClientSearchModel model);
+        
+        ClientViewModel? GetElement(ClientSearchModel model);
+        
+        ClientViewModel? Insert(ClientBindingModel model);
+        
+        ClientViewModel? Update(ClientBindingModel model);
+        
+        ClientViewModel? Delete(ClientBindingModel model);
+    }
+}

BookShop/BookShopContracts/StoragesContracts/IGenreStorage.cs

@@ -0,0 +1,21 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.StoragesContracts
+{
+    public interface IGenreStorage
+    {
+        List<GenreViewModel> GetFullList();
+        
+        List<GenreViewModel> GetFilteredList(GenreSearchModel model);
+        
+        GenreViewModel? GetElement(GenreSearchModel model);
+        
+        GenreViewModel? Insert(GenreBindingModel model);
+        
+        GenreViewModel? Update(GenreBindingModel model);
+        
+        GenreViewModel? Delete(GenreBindingModel model);
+    }
+}

BookShop/BookShopContracts/StoragesContracts/IOrderStorage.cs

@@ -0,0 +1,17 @@
+using BookShopContracts.BindingModels;
+using BookShopContracts.SearchModels;
+using BookShopContracts.ViewModels;
+
+namespace BookShopContracts.StoragesContracts
+{
+    public interface IOrderStorage
+    {
+        List<OrderViewModel> GetFullList();
+        
+        List<OrderViewModel> GetFilteredList(OrderSearchModel model);
+        
+        OrderViewModel? GetElement(OrderSearchModel model);
+        
+        OrderViewModel? Insert(OrderBindingModel model);
+    }
+}

BookShop/BookShopContracts/ViewModels/AuthorViewModel.cs

@@ -0,0 +1,19 @@
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.ViewModels
+{
+    public class AuthorViewModel: IAuthorModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Фамилия автора")]
+        
+        public string AuthorSurname { get; set; } = string.Empty;
+        [DisplayName("Имя автора")]
+        
+        public string AuthorName { get; set; } = string.Empty;
+        [DisplayName("Отчество автора")]
+        
+        public string AuthorPatronymic { get; set; } = string.Empty;
+    }
+}

BookShop/BookShopContracts/ViewModels/BookViewModel.cs

@@ -0,0 +1,24 @@
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.ViewModels
+{
+    public class BookViewModel: IBookModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название")]
+        
+        public string BookName { get; set; } = string.Empty;
+        [DisplayName("Стоимость")]
+        
+        public double Cost { get; set; }
+        
+        public int Count { get; set; }
+        
+        public int GenreId { get; set; }
+        
+        public string GenreName { get; set; } = string.Empty;
+        
+        public Dictionary<int, IAuthorModel> BookAuthors { get; set; } = new();
+    }
+}

BookShop/BookShopContracts/ViewModels/ClientViewModel.cs

@@ -0,0 +1,23 @@
+using BookShopContracts.BusinessLogicsContracts;
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.ViewModels
+{
+    public class ClientViewModel: IClientModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Фамилия клиента")]
+        
+        public string ClientSurname { get; set; } = string.Empty;
+        [DisplayName("Имя клиента")]
+        
+        public string ClientName { get; set; } = string.Empty;
+        [DisplayName("Отчество клиента")]
+        
+        public string ClientPatronymic { get; set; } = string.Empty;
+        [DisplayName("Электронная почта клиента")]
+        
+        public string Email { get; set; } = string.Empty;
+    }
+}

BookShop/BookShopContracts/ViewModels/GenreViewModel.cs

@@ -0,0 +1,13 @@
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.ViewModels
+{
+    public class GenreViewModel: IGenreModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Жанр")]
+        
+        public string GenreName { get; set; } = string.Empty;
+    }
+}

BookShop/BookShopContracts/ViewModels/OrderViewModel.cs

@@ -0,0 +1,29 @@
+using BookShopDataModels.Models;
+using System.ComponentModel;
+
+namespace BookShopContracts.ViewModels
+{
+    public class OrderViewModel: IOrderModel
+    {
+        public int Id { get; set; }
+        
+        public int BookId { get; set; }
+        [DisplayName("Название книги")]
+        
+        public string BookName { get; set; } = string.Empty;
+        
+        public int ClientId { get; set; }
+        [DisplayName("Фамилия клиента")]
+        
+        public string ClientSurname {get; set; } = string.Empty;
+        [DisplayName("Количество")]
+        
+        public int Count { get; set; }
+        [DisplayName("Сумма")]
+        
+        public double Sum { get; set; }
+        [DisplayName("Дата заказа")]
+        
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+    }
+}

BookShop/BookShopDataModels/BookShopDataModels.csproj

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

BookShop/BookShopDataModels/IId.cs

@@ -0,0 +1,7 @@
+namespace BookShopDataModels
+{
+    public interface IId
+    {
+        int Id { get; }
+    }
+}

BookShop/BookShopDataModels/Models/IAuthorModel.cs

@@ -0,0 +1,11 @@
+namespace BookShopDataModels.Models
+{
+    public interface IAuthorModel: IId
+    {
+        string AuthorSurname { get; }
+
+        string AuthorName { get; }
+
+        string AuthorPatronymic { get; }
+    }
+}

BookShop/BookShopDataModels/Models/IBookModel.cs

@@ -0,0 +1,15 @@
+namespace BookShopDataModels.Models
+{
+    public interface IBookModel: IId
+    {
+        string BookName { get; }
+
+        double Cost { get; }
+
+        int Count { get; }
+
+        int GenreId { get; }
+
+        Dictionary<int, IAuthorModel> BookAuthors { get; }
+    }
+}

BookShop/BookShopDataModels/Models/IClientModel.cs

@@ -0,0 +1,13 @@
+namespace BookShopDataModels.Models
+{
+    public interface IClientModel: IId
+    {
+        string ClientSurname { get; }
+
+        string ClientName { get; }
+
+        string ClientPatronymic { get; }
+
+        string Email { get; }
+    }
+}

BookShop/BookShopDataModels/Models/IGenreModel.cs

@@ -0,0 +1,7 @@
+namespace BookShopDataModels.Models
+{
+    public interface IGenreModel : IId
+    {
+        string GenreName { get; }
+    }
+}

BookShop/BookShopDataModels/Models/IOrderModel.cs

@@ -0,0 +1,15 @@
+namespace BookShopDataModels.Models
+{
+    public interface IOrderModel: IId
+    {
+        int Count { get; }
+
+        int BookId { get; }
+
+        int ClientId { get; }
+
+        double Sum { get; }
+
+        DateTime DateCreate { get; }
+    }
+}

BookShop/BookShopView/Form1.Designer.cs

@@ -1,4 +1,4 @@
-namespace BookShop
+namespace BookShopView
 {
 	partial class Form1
 	{

BookShop/BookShopView/Form1.cs

@@ -1,4 +1,4 @@
-namespace BookShop
+namespace BookShopView
 {
 	public partial class Form1 : Form
 	{

BookShop/BookShopView/Program.cs

@@ -1,4 +1,4 @@
-namespace BookShop
+namespace BookShopView
 {
 	internal static class Program
 	{