.gitattributes

@@ -0,0 +1,63 @@
+###############################################################################
+# Set default behavior to automatically normalize line endings.
+###############################################################################
+* text=auto
+
+###############################################################################
+# Set default behavior for command prompt diff.
+#
+# This is need for earlier builds of msysgit that does not have it on by
+# default for csharp files.
+# Note: This is only used by command line
+###############################################################################
+#*.cs     diff=csharp
+
+###############################################################################
+# Set the merge driver for project and solution files
+#
+# Merging from the command prompt will add diff markers to the files if there
+# are conflicts (Merging from VS is not affected by the settings below, in VS
+# the diff markers are never inserted). Diff markers may cause the following 
+# file extensions to fail to load in VS. An alternative would be to treat
+# these files as binary and thus will always conflict and require user
+# intervention with every merge. To do so, just uncomment the entries below
+###############################################################################
+#*.sln       merge=binary
+#*.csproj    merge=binary
+#*.vbproj    merge=binary
+#*.vcxproj   merge=binary
+#*.vcproj    merge=binary
+#*.dbproj    merge=binary
+#*.fsproj    merge=binary
+#*.lsproj    merge=binary
+#*.wixproj   merge=binary
+#*.modelproj merge=binary
+#*.sqlproj   merge=binary
+#*.wwaproj   merge=binary
+
+###############################################################################
+# behavior for image files
+#
+# image files are treated as binary by default.
+###############################################################################
+#*.jpg   binary
+#*.png   binary
+#*.gif   binary
+
+###############################################################################
+# diff behavior for common document formats
+# 
+# Convert binary document formats to text before diffing them. This feature
+# is only available from the command line. Turn it on by uncommenting the 
+# entries below.
+###############################################################################
+#*.doc   diff=astextplain
+#*.DOC   diff=astextplain
+#*.docx  diff=astextplain
+#*.DOCX  diff=astextplain
+#*.dot   diff=astextplain
+#*.DOT   diff=astextplain
+#*.pdf   diff=astextplain
+#*.PDF   diff=astextplain
+#*.rtf   diff=astextplain
+#*.RTF   diff=astextplain

.gitignore

@@ -0,0 +1,363 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd

BookBusinessLogic/BookBusinessLogic.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BookContract\BookContract.csproj" />
+  </ItemGroup>
+
+</Project>

BookBusinessLogic/BusinessLogic/BookLogic.cs

@@ -0,0 +1,61 @@
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookBusinessLogic.BusinessLogic
+{
+    public class BookLogic : IBookLogic
+    {
+        private readonly IBookStorage _bookStorage;
+
+        public BookLogic(IBookStorage bookStorage)
+        {
+            _bookStorage = bookStorage;
+        }
+
+        public void CreateOrUpdate(BookBindingModel model)
+        {
+            var element = _bookStorage.GetElement(new BookBindingModel { Title = model.Title });
+            if (element != null && element.Id != model.Id) {
+                throw new Exception("Книги с таким названием тут нет");
+            }
+            if (model.Id.HasValue)
+            {
+                _bookStorage.Update(model);
+            }
+            else
+            {
+                _bookStorage.Insert(model);
+            }
+        }
+
+        public void Delete(BookBindingModel model)
+        {
+            var element = _bookStorage.GetElement(new BookBindingModel { Title = model.Title });
+            if (element == null)
+            {
+                throw new Exception("Книги с таким названием тут нет");
+            }
+            _bookStorage.Delete(model);
+        }
+
+        public List<BookViewModel> Read(BookBindingModel model)
+        {
+            if(model == null)
+                return _bookStorage.GetFullList();
+            if (model.Id.HasValue) {
+                return new List<BookViewModel> {
+                    _bookStorage.GetElement(model)
+                };
+            }
+            return _bookStorage.GetFullList();
+        }
+    }
+}

BookBusinessLogic/BusinessLogic/HistoryLogic.cs

@@ -0,0 +1,66 @@
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookBusinessLogic.BusinessLogic
+{
+    public class HistoryLogic : IHistoryLogic
+    {
+        private readonly IHistoryStorage _historyStorage;
+
+        public HistoryLogic(IHistoryStorage historyStorage)
+        {
+            _historyStorage = historyStorage;
+        }
+
+        public List<HistoryViewModel> Read(HistoryBindingModel model)
+        {
+            if(model == null)
+            {
+                return _historyStorage.GetFullList();
+            }
+            if (model.Id.HasValue) { 
+                return new List<HistoryViewModel>
+                {
+                    _historyStorage.GetElement(model)
+                };
+            }
+            return _historyStorage.GetHistoryByBookId(model.BookId);
+        }
+
+        public void CreateOrUpdate(HistoryBindingModel model)
+        {
+            var element = _historyStorage.GetElement(
+               new HistoryBindingModel
+               {
+                   Id = model.Id,
+               });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new Exception("Такая связь уже существует");
+            }
+            _historyStorage.Insert(model);
+        }
+
+        public void Delete(HistoryBindingModel model)
+        {
+            var element = _historyStorage.GetElement(new HistoryBindingModel
+            {
+                Id = model.Id
+            });
+
+            if (element == null)
+            {
+                throw new Exception("Навык не найден");
+            }
+
+            _historyStorage.Delete(model);
+        }
+    }
+}

BookBusinessLogic/BusinessLogic/ReaderLogic.cs

@@ -0,0 +1,62 @@
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookBusinessLogic.BusinessLogic
+{
+    public class ReaderLogic : IReaderLogic
+    {
+        private readonly IReaderStorage _readerStorage;
+
+        public ReaderLogic(IReaderStorage readerStorage)
+        {
+            _readerStorage = readerStorage;
+        }
+
+        public void CreateOrUpdate(ReaderBindingModel model)
+        {
+            var element = _readerStorage.GetElement(new ReaderBindingModel { Name = model.Name });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new Exception("Книги с таким названием тут нет");
+            }
+            if (model.Id.HasValue)
+            {
+                _readerStorage.Update(model);
+            }
+            else
+            {
+                _readerStorage.Insert(model);
+            }
+        }
+
+        public void Delete(ReaderBindingModel model)
+        {
+            var element = _readerStorage.GetElement(new ReaderBindingModel { Name = model.Name });
+            if (element == null)
+            {
+                throw new Exception("Книги с таким названием тут нет");
+            }
+            _readerStorage.Delete(model);
+        }
+
+        public List<ReaderViewModel> Read(ReaderBindingModel model)
+        {
+            if (model == null)
+                return _readerStorage.GetFullList();
+            if (model.Id.HasValue)
+            {
+                return new List<ReaderViewModel> {
+                    _readerStorage.GetElement(model)
+                };
+            }
+            return _readerStorage.GetFullList();
+        }
+    }
+}

BookContract/BindingModels/BookBindingModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BindingModels
+{
+    public class BookBindingModel
+    {
+        public int? Id { get; set; }
+        public string Title { get; set; } = string.Empty;
+        public string BookType { get; set; } = string.Empty; 
+        public string Annotation { get; set; } = string.Empty;
+        public List<int> ReaderIds { get; set; } = new List<int>();
+    }
+}

BookContract/BindingModels/HistoryBindingModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BindingModels
+{
+    public class HistoryBindingModel
+    {
+        public int? Id { get; set; }
+        public int BookId { get; set; }
+        public int ReaderId { get; set; }
+        public DateTime DateBorrowed { get; set; }
+    }
+}

BookContract/BindingModels/ReaderBindingModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BindingModels
+{
+    public class ReaderBindingModel
+    {
+        public int? Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+    }
+}

BookContract/BookContract.csproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+</Project>

BookContract/BusinessLogicContracts/IBookLogic.cs

@@ -0,0 +1,19 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BusinessLogicContracts
+{
+    public interface IBookLogic
+    {
+        List<BookViewModel> Read(BookBindingModel model);
+
+        void CreateOrUpdate(BookBindingModel model);
+
+        void Delete(BookBindingModel model);
+    }
+}

BookContract/BusinessLogicContracts/IHistoryLogic.cs

@@ -0,0 +1,19 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BusinessLogicContracts
+{
+    public interface IHistoryLogic
+    {
+        List<HistoryViewModel> Read(HistoryBindingModel model);
+
+        void CreateOrUpdate(HistoryBindingModel model);
+
+        void Delete(HistoryBindingModel model);
+    }
+}

BookContract/BusinessLogicContracts/IReaderLogic.cs

@@ -0,0 +1,19 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.BusinessLogicContracts
+{
+    public interface IReaderLogic
+    {
+        List<ReaderViewModel> Read(ReaderBindingModel model);
+
+        void CreateOrUpdate(ReaderBindingModel model);
+
+        void Delete(ReaderBindingModel model);
+    }
+}

BookContract/StorageContracts/IBookStorage.cs

@@ -0,0 +1,20 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.StorageContracts
+{
+    public interface IBookStorage
+    {
+        List<BookViewModel> GetFullList();
+        List<BookViewModel> GetFilterList(BookBindingModel model);
+        BookViewModel GetElement(BookBindingModel model);
+        void Insert(BookBindingModel model);
+        void Update(BookBindingModel model);
+        void Delete(BookBindingModel model);
+    }
+}

BookContract/StorageContracts/IHistoryStorage.cs

@@ -0,0 +1,19 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.StorageContracts
+{
+    public interface IHistoryStorage
+    {
+        HistoryViewModel GetElement(HistoryBindingModel model);
+        List<HistoryViewModel> GetFullList();
+        List<HistoryViewModel> GetHistoryByBookId(int bookId);
+        void Insert(HistoryBindingModel model);
+        void Delete(HistoryBindingModel model);
+    }
+}

BookContract/StorageContracts/IReaderStorage.cs

@@ -0,0 +1,20 @@
+using BookContract.BindingModels;
+using BookContract.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.StorageContracts
+{
+    public interface IReaderStorage
+    {
+        List<ReaderViewModel> GetFullList();
+        List<ReaderViewModel> GetFilterList(ReaderBindingModel model);
+        ReaderViewModel GetElement(ReaderBindingModel model);
+        void Insert(ReaderBindingModel model);
+        void Update(ReaderBindingModel model);
+        void Delete(ReaderBindingModel model);
+    }
+}

BookContract/ViewModels/BookViewModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.ViewModels
+{
+    public class BookViewModel
+    {
+        public int Id { get; set; }
+        public string Title { get; set; } = string.Empty;
+        public string BookType { get; set; } = string.Empty;
+        public string Annotation { get; set; } = string.Empty;
+        public List<ReaderViewModel> LastReaders { get; set; } = new List<ReaderViewModel>();
+    }
+}

BookContract/ViewModels/HistoryViewModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.ViewModels
+{
+    public class HistoryViewModel
+    {
+        public int Id { get; set; }
+        public int BookId { get; set; }
+        public int ReaderId { get; set; }
+        public DateTime DateBorrowed { get; set; }
+    }
+}

BookContract/ViewModels/ReaderViewModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookContract.ViewModels
+{
+    public class ReaderViewModel
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+    }
+}

BookDatabaseImplement/BookDatabaseImplement.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.10" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql" Version="8.0.5" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.10" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BookContract\BookContract.csproj" />
+  </ItemGroup>
+
+</Project>

BookDatabaseImplement/BookLibraryDatabase .cs

@@ -0,0 +1,28 @@
+using BookDatabaseImplement.Model;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement
+{
+    public class BookLibraryDatabase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"Host=localhost;Port=5432;Database=BookLibrary_db;Username=postgres;Password=password");
+            }
+            base.OnConfiguring(optionsBuilder);
+            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+            AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+        }
+        public virtual DbSet<Book> Books { get; set; }
+        public virtual DbSet<Reader> Readers { get; set; }
+        public virtual DbSet<History> Histories { get; set; }
+    }
+}

BookDatabaseImplement/Implements/BookStorage.cs

@@ -0,0 +1,126 @@
+using BookContract.BindingModels;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using BookDatabaseImplement.Model;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Implements
+{
+    public class BookStorage : IBookStorage
+    {
+        private Book CreateModel(BookBindingModel model, Book book)
+        {
+            book.Title = model.Title;
+            book.BookType = model.BookType;
+            book.Annotation = model.Annotation;
+
+            return book;
+        }
+
+        private BookViewModel CreateModel(Book book)
+        {
+            return new BookViewModel
+            {
+                Id = book.Id,
+                Title = book.Title,
+                BookType = book.BookType,
+                Annotation = book.Annotation,
+                LastReaders = book.LastReaders
+                .OrderByDescending(h => h.DateBorrowed)
+                .Select(h => new ReaderViewModel
+                {
+                    Id = h.Reader.Id,
+                    Name = h.Reader.Name
+                })
+                .Take(6)
+                .ToList()
+            };
+        }
+
+        public List<BookViewModel> GetFullList()
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Books
+                            .Include(b => b.LastReaders)
+                                .ThenInclude(h => h.Reader)
+                            .ToList()
+                            .Select(CreateModel)
+                            .ToList();
+        }
+
+        public List<BookViewModel> GetFilterList(BookBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Books
+                .Where(book => book.BookType.Contains(model.BookType))
+                .ToList().Select(CreateModel).ToList();
+        }
+
+        public BookViewModel? GetElement(BookBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var book = context.Books.FirstOrDefault(rec => rec.Id == model.Id || rec.Title == model.Title);
+            return book != null ? CreateModel(book) : null;
+        }
+
+        public void Insert(BookBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                context.Books.Add(CreateModel(model, new Book()));
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public void Update(BookBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var book = context.Books.FirstOrDefault(rec => rec.Id == model.Id);
+                if (book == null)
+                {
+                    throw new Exception("Книга не найдена");
+                }
+                CreateModel(model, book);
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public void Delete(BookBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var book = context.Books.FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (book != null)
+            {
+                context.Books.Remove(book);
+                context.SaveChanges();
+            }
+            else
+            {
+                throw new Exception("Книга не найдена");
+            }
+        }
+    }
+}

BookDatabaseImplement/Implements/HistoryStorage.cs

@@ -0,0 +1,87 @@
+using BookContract.BindingModels;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using BookDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Implements
+{
+    public class HistoryStorage : IHistoryStorage
+    {
+        private History CreateModel(HistoryBindingModel model, History history)
+        {
+            history.BookId = model.BookId;
+            history.ReaderId = model.ReaderId;
+            history.DateBorrowed = model.DateBorrowed;
+            return history;
+        }
+
+        private HistoryViewModel CreateModel(History history)
+        {
+            return new HistoryViewModel
+            {
+                Id = history.Id,
+                BookId = history.BookId,
+                ReaderId = history.ReaderId,
+                DateBorrowed = history.DateBorrowed
+            };
+        }
+
+        public List<HistoryViewModel> GetFullList()
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Histories.ToList().Select(CreateModel).ToList();
+        }
+
+        public List<HistoryViewModel> GetHistoryByBookId(int bookId)
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Histories
+                .Where(history => history.BookId == bookId)
+                .ToList().Select(CreateModel).ToList();
+        }
+
+        public HistoryViewModel? GetElement(HistoryBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var history = context.Histories.FirstOrDefault(rec => rec.Id == model.Id);
+            return history != null ? CreateModel(history) : null;
+        }
+
+        public void Insert(HistoryBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                context.Histories.Add(CreateModel(model, new History()));
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public void Delete(HistoryBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var history = context.Histories.FirstOrDefault(rec => rec.Id == model.Id);
+            if (history != null)
+            {
+                context.Histories.Remove(history);
+                context.SaveChanges();
+            }
+            else
+            {
+                throw new Exception("Запись истории не найдена");
+            }
+        }
+    }
+}

BookDatabaseImplement/Implements/ReaderStorage.cs

@@ -0,0 +1,105 @@
+using BookContract.BindingModels;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using BookDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Implements
+{
+    public class ReaderStorage : IReaderStorage
+    {
+        private Reader CreateModel(ReaderBindingModel model, Reader reader)
+        {
+            reader.Name = model.Name;
+            return reader;
+        }
+
+        private ReaderViewModel CreateModel(Reader reader)
+        {
+            return new ReaderViewModel
+            {
+                Id = reader.Id,
+                Name = reader.Name
+            };
+        }
+
+        public List<ReaderViewModel> GetFullList()
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Readers.ToList().Select(CreateModel).ToList();
+        }
+
+        public List<ReaderViewModel> GetFilterList(ReaderBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            return context.Readers
+                .Where(reader => reader.Name.Contains(model.Name))
+                .ToList().Select(CreateModel).ToList();
+        }
+
+        public ReaderViewModel? GetElement(ReaderBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var reader = context.Readers.FirstOrDefault(rec => rec.Id == model.Id || rec.Name == model.Name);
+            return reader != null ? CreateModel(reader) : null;
+        }
+
+        public void Insert(ReaderBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                context.Readers.Add(CreateModel(model, new Reader()));
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public void Update(ReaderBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var reader = context.Readers.FirstOrDefault(rec => rec.Id == model.Id);
+                if (reader == null)
+                {
+                    throw new Exception("Читатель не найден");
+                }
+                CreateModel(model, reader);
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public void Delete(ReaderBindingModel model)
+        {
+            using var context = new BookLibraryDatabase();
+            var reader = context.Readers.FirstOrDefault(rec => rec.Id == model.Id);
+            if (reader != null)
+            {
+                context.Readers.Remove(reader);
+                context.SaveChanges();
+            }
+            else
+            {
+                throw new Exception("Читатель не найден");
+            }
+        }
+    }
+}

BookDatabaseImplement/Migrations/20241028084936_InitMig.Designer.cs

@@ -0,0 +1,128 @@
+// <auto-generated />
+using System;
+using BookDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BookDatabaseImplement.Migrations
+{
+    [DbContext(typeof(BookLibraryDatabase))]
+    [Migration("20241028084936_InitMig")]
+    partial class InitMig
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Book", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Annotation")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("BookType")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Books");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.History", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("BookId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateBorrowed")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<int>("ReaderId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BookId");
+
+                    b.HasIndex("ReaderId");
+
+                    b.ToTable("Histories");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Reader", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Readers");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.History", b =>
+                {
+                    b.HasOne("BookDatabaseImplement.Model.Book", "Book")
+                        .WithMany("LastReaders")
+                        .HasForeignKey("BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("BookDatabaseImplement.Model.Reader", "Reader")
+                        .WithMany("BorrowedBooks")
+                        .HasForeignKey("ReaderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+
+                    b.Navigation("Reader");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Book", b =>
+                {
+                    b.Navigation("LastReaders");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Reader", b =>
+                {
+                    b.Navigation("BorrowedBooks");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BookDatabaseImplement/Migrations/20241028084936_InitMig.cs

@@ -0,0 +1,94 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BookDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitMig : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Books",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Title = table.Column<string>(type: "text", nullable: false),
+                    BookType = table.Column<string>(type: "text", nullable: false),
+                    Annotation = table.Column<string>(type: "character varying(200)", maxLength: 200, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Books", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Readers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Readers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Histories",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    BookId = table.Column<int>(type: "integer", nullable: false),
+                    ReaderId = table.Column<int>(type: "integer", nullable: false),
+                    DateBorrowed = table.Column<DateTime>(type: "timestamp without time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Histories", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Histories_Books_BookId",
+                        column: x => x.BookId,
+                        principalTable: "Books",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Histories_Readers_ReaderId",
+                        column: x => x.ReaderId,
+                        principalTable: "Readers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Histories_BookId",
+                table: "Histories",
+                column: "BookId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Histories_ReaderId",
+                table: "Histories",
+                column: "ReaderId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Histories");
+
+            migrationBuilder.DropTable(
+                name: "Books");
+
+            migrationBuilder.DropTable(
+                name: "Readers");
+        }
+    }
+}

BookDatabaseImplement/Migrations/BookLibraryDatabaseModelSnapshot.cs

@@ -0,0 +1,125 @@
+// <auto-generated />
+using System;
+using BookDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BookDatabaseImplement.Migrations
+{
+    [DbContext(typeof(BookLibraryDatabase))]
+    partial class BookLibraryDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Book", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Annotation")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("character varying(200)");
+
+                    b.Property<string>("BookType")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Books");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.History", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("BookId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateBorrowed")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<int>("ReaderId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BookId");
+
+                    b.HasIndex("ReaderId");
+
+                    b.ToTable("Histories");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Reader", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Readers");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.History", b =>
+                {
+                    b.HasOne("BookDatabaseImplement.Model.Book", "Book")
+                        .WithMany("LastReaders")
+                        .HasForeignKey("BookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("BookDatabaseImplement.Model.Reader", "Reader")
+                        .WithMany("BorrowedBooks")
+                        .HasForeignKey("ReaderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Book");
+
+                    b.Navigation("Reader");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Book", b =>
+                {
+                    b.Navigation("LastReaders");
+                });
+
+            modelBuilder.Entity("BookDatabaseImplement.Model.Reader", b =>
+                {
+                    b.Navigation("BorrowedBooks");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BookDatabaseImplement/Model/Book.cs

@@ -0,0 +1,28 @@
+    using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Model
+{
+    public class Book
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Title { get; set; } = string.Empty;
+
+        [Required]
+        public string BookType { get; set; } = string.Empty;
+
+        [Required]
+        [StringLength(200, MinimumLength = 100)]
+        public string Annotation { get; set; } = string.Empty;
+
+        [InverseProperty("Book")]
+        public List<History> LastReaders { get; set; } = new List<History>();
+    }
+}

BookDatabaseImplement/Model/History.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Model
+{
+    public class History
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int BookId { get; set; }
+
+        [ForeignKey("BookId")]
+        public Book Book { get; set; }
+
+        [Required]
+        public int ReaderId { get; set; }
+
+        [ForeignKey("ReaderId")]
+        public Reader Reader { get; set; }
+
+        [Required]
+        public DateTime DateBorrowed { get; set; }
+    }
+}

BookDatabaseImplement/Model/Reader.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookDatabaseImplement.Model
+{
+    public class Reader
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        public List<History> BorrowedBooks { get; set; } = new List<History>();
+    }
+}

COP3.sln

@@ -0,0 +1,49 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35303.130
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BookContract", "BookContract\BookContract.csproj", "{B6BADCB3-6326-4D78-B7EA-33E648B98B45}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BookDatabaseImplement", "BookDatabaseImplement\BookDatabaseImplement.csproj", "{1ADFC6AE-FBB7-405C-9D0E-80E1EB5E15F9}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Desktop", "Desktop\Desktop.csproj", "{193A14AF-1D66-4FE6-B463-A985BE2E63BB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Test", "Test\Test.csproj", "{67A97857-028F-4E5B-A9CF-BDEFD8699C25}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BookBusinessLogic", "BookBusinessLogic\BookBusinessLogic.csproj", "{1FCCA8B4-9391-4F9E-AF1F-556C56EAA352}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B6BADCB3-6326-4D78-B7EA-33E648B98B45}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B6BADCB3-6326-4D78-B7EA-33E648B98B45}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B6BADCB3-6326-4D78-B7EA-33E648B98B45}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B6BADCB3-6326-4D78-B7EA-33E648B98B45}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1ADFC6AE-FBB7-405C-9D0E-80E1EB5E15F9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1ADFC6AE-FBB7-405C-9D0E-80E1EB5E15F9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1ADFC6AE-FBB7-405C-9D0E-80E1EB5E15F9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1ADFC6AE-FBB7-405C-9D0E-80E1EB5E15F9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{193A14AF-1D66-4FE6-B463-A985BE2E63BB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{193A14AF-1D66-4FE6-B463-A985BE2E63BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{193A14AF-1D66-4FE6-B463-A985BE2E63BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{193A14AF-1D66-4FE6-B463-A985BE2E63BB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{67A97857-028F-4E5B-A9CF-BDEFD8699C25}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{67A97857-028F-4E5B-A9CF-BDEFD8699C25}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{67A97857-028F-4E5B-A9CF-BDEFD8699C25}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{67A97857-028F-4E5B-A9CF-BDEFD8699C25}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1FCCA8B4-9391-4F9E-AF1F-556C56EAA352}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1FCCA8B4-9391-4F9E-AF1F-556C56EAA352}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1FCCA8B4-9391-4F9E-AF1F-556C56EAA352}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1FCCA8B4-9391-4F9E-AF1F-556C56EAA352}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {05DA2BD9-9B6D-4B78-897A-1EEAEEA4139A}
+	EndGlobalSection
+EndGlobal

COP3/COP3.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BookContract\BookContract.csproj" />
+  </ItemGroup>
+
+</Project>

COP3/Class1.cs

@@ -0,0 +1,7 @@
+namespace COP3
+{
+    public class Class1
+    {
+
+    }
+}

Desktop/Desktop.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Components" Version="1.0.0" />
+    <PackageReference Include="COP_V6" Version="1.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Unity" Version="5.11.10" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BookBusinessLogic\BookBusinessLogic.csproj" />
+    <ProjectReference Include="..\BookContract\BookContract.csproj" />
+    <ProjectReference Include="..\BookDatabaseImplement\BookDatabaseImplement.csproj" />
+  </ItemGroup>
+
+</Project>

Desktop/Form1.Designer.cs

@@ -0,0 +1,58 @@
+namespace Desktop
+{
+    partial class Form1
+    {
+        /// <summary>
+        ///  Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        ///  Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        ///  Required method for Designer support - do not modify
+        ///  the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            bookList = new Components.VisualComponents.UserListBox();
+            SuspendLayout();
+            // 
+            // bookList
+            // 
+            bookList.Location = new Point(-1, 1);
+            bookList.Name = "bookList";
+            bookList.SelectedIndex = -1;
+            bookList.Size = new Size(803, 450);
+            bookList.TabIndex = 0;
+            // 
+            // Form1
+            // 
+            AutoScaleDimensions = new SizeF(7F, 15F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(800, 450);
+            Controls.Add(bookList);
+            Name = "Form1";
+            Text = "Form1";
+            Load += Form1_Load;
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private Components.VisualComponents.UserListBox bookList;
+    }
+}

Desktop/Form1.cs

@@ -0,0 +1,45 @@
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookDatabaseImplement.Implements;
+
+namespace Desktop
+{
+    public partial class Form1 : Form
+    {
+        private IBookLogic _bookLogicl;
+        private IHistoryLogic _historyLogicl;
+        private IReaderLogic _readerLogicl;
+
+
+        public Form1(IBookLogic bookLogic, IHistoryLogic historyLogicl, IReaderLogic readerLogicl)
+        {
+            InitializeComponent();
+            _bookLogicl = bookLogic;
+            _historyLogicl = historyLogicl;
+            _readerLogicl = readerLogicl;
+
+            bookList.SetTemplate("{", "}", "Ôîðìà êíèãè {BookType} Èíäèôèêàòîð {Id} Íàçâàíèå {Title} {Annotation} Àííîòàöèÿ");
+        }
+
+        private void Form1_Load(object sender, EventArgs e)
+        {
+            var books = _bookLogicl.Read(null);
+
+            foreach (var book in books)
+            {
+                bookList.Add<BookBindingModel>(new BookBindingModel { Id = book.Id, Title = book.Title, BookType = book.BookType, Annotation = book.Annotation });
+            }
+        }
+
+        private void controlTextBox1_Load(object sender, EventArgs e)
+        {
+
+        }
+
+        private void bookList_Load(object sender, EventArgs e)
+        {
+
+        }
+
+    }
+}

Desktop/Form1.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Desktop/Program.cs

@@ -0,0 +1,51 @@
+using BookBusinessLogic.BusinessLogic;
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookContract.StorageContracts;
+using BookDatabaseImplement.Implements;
+using Unity;
+using Unity.Lifetime;
+
+namespace Desktop
+{
+    internal static class Program
+    {
+        private static IUnityContainer container = null;
+
+        public static IUnityContainer Container
+        {
+            get
+            {
+                if (container == null)
+                {
+                    container = BuildUnityContainer();
+                }
+                return container;
+            }
+        }
+
+        [STAThread]
+        static void Main()
+        {
+            Application.SetHighDpiMode(HighDpiMode.SystemAware);
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(Container.Resolve<Form1>());
+        }
+
+        private static IUnityContainer BuildUnityContainer()
+        {
+            var currentContainer = new UnityContainer();
+
+            currentContainer.RegisterType<IBookStorage, BookStorage>(new HierarchicalLifetimeManager());
+            currentContainer.RegisterType<IHistoryStorage, HistoryStorage>(new HierarchicalLifetimeManager());
+            currentContainer.RegisterType<IReaderStorage, ReaderStorage>(new HierarchicalLifetimeManager());
+
+            currentContainer.RegisterType<IBookLogic, BookLogic>(new HierarchicalLifetimeManager());
+            currentContainer.RegisterType<IHistoryLogic, HistoryLogic>(new HierarchicalLifetimeManager());
+            currentContainer.RegisterType<IReaderLogic, ReaderLogic>(new HierarchicalLifetimeManager());
+
+            return currentContainer;
+        }
+    }
+}

README.md

@@ -1,2 +0,0 @@
-# PIbd-31_COP6
-

Test/Program.cs

@@ -0,0 +1,119 @@
+using BookBusinessLogic.BusinessLogic;
+using BookContract.BindingModels;
+using BookContract.BusinessLogicContracts;
+using BookContract.StorageContracts;
+using BookContract.ViewModels;
+using BookDatabaseImplement.Implements;
+using Microsoft.Extensions.DependencyInjection;
+
+//var bookStorage = new BookStorage();
+//var readerStorage = new ReaderStorage();
+//var historyStorage = new HistoryStorage();
+
+//// создание книг
+//var book1 = new bookbindingmodel { title = "книга 1", booktype = "фантастика", annotation = "аннотация к книге 1" };
+//var book2 = new bookbindingmodel { title = "книга 2", booktype = "приключения", annotation = "аннотация к книге 2" };
+
+//bookstorage.insert(book1);
+//bookstorage.insert(book2);
+
+//console.writeline("книги созданы.");
+
+//// создание читателей
+//var reader1 = new readerbindingmodel { name = "читатель 1" };
+//var reader2 = new readerbindingmodel { name = "читатель 2" };
+//var reader3 = new readerbindingmodel { name = "читатель 3" };
+
+//readerstorage.insert(reader1);
+//readerstorage.insert(reader2);
+//readerstorage.insert(reader3);
+
+//console.writeline("читатели созданы.");
+
+
+//historystorage.insert(new historybindingmodel { bookid = 2, readerid = 1, dateborrowed = datetime.now });
+//historystorage.insert(new historybindingmodel { bookid = 2, readerid = 2, dateborrowed = datetime.now });
+//historystorage.insert(new historybindingmodel { bookid = 2, readerid = 3, dateborrowed = datetime.now });
+
+
+//Console.WriteLine("Читатели добавлены к книге.");
+
+//var books = bookStorage.GetFullList();
+//foreach (var book in books)
+//{
+//    Console.WriteLine($"Title: {book.Title}");
+//    Console.WriteLine("Readers: ");
+//    foreach (var reader in book.LastReaders)
+//    {
+//        Console.WriteLine($"- {reader.Name} (ID: {reader.Id})");
+//    }
+//}
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        //Настройка DI (если используете)
+        var serviceProvider = new ServiceCollection()
+            .AddSingleton<IBookStorage, BookStorage>()
+            .AddSingleton<IBookLogic, BookLogic>()
+            .AddSingleton<IReaderLogic, ReaderLogic>()
+            .AddSingleton<IReaderStorage, ReaderStorage>()
+            .AddSingleton<IHistoryLogic, HistoryLogic>()
+            .AddSingleton<IHistoryStorage, HistoryStorage>()
+            .BuildServiceProvider();
+
+        var bookLogic = serviceProvider.GetService<IBookLogic>();
+        var readerLogic = serviceProvider.GetService<IReaderLogic>();
+        var historyLogic = serviceProvider.GetService<IHistoryLogic>();
+
+        var book1 = new BookBindingModel();
+        book1.Id = 1;
+        book1.BookType = "HHHH";
+        book1.Annotation = "asdafaf";
+        book1.Title = "Title";
+        //bookLogic.CreateOrUpdate(book1);
+        
+       /* var pay1 = new HistoryBindingModel();
+        pay1.DateBorrowed = DateTime.Now;
+        pay1.Id = 5;
+        pay1.BookId = 1;
+        pay1.ReaderId = 4;
+
+        historyLogic.CreateOrUpdate(pay1);
+
+        DisplayAllBooks(bookLogic);
+
+        var readers = readerLogic.Read(null);
+        foreach (var reader in readers)
+        {
+            Console.WriteLine($"ID: {reader.Id}, Name: {reader.Name}");
+        }*/
+    }
+
+    private static void DisplayAllBooks(IBookLogic bookLogic)
+    {
+        /*try
+        {
+            var books = bookLogic.Read(null);
+            if (books.Count == 0)
+            {
+                Console.WriteLine("Нет доступных книг.");
+                return;
+            }
+
+            foreach (var book in books)
+            {
+                Console.WriteLine($"ID: {book.Id}, Title: {book.Title}, Type: {book.BookType}, Annotation: {book.Annotation}");
+                foreach (var reader in book.LastReaders)
+                {
+                    Console.WriteLine($"- {reader.Name}");
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Ошибка: {ex.Message}");
+        }*/
+    }
+}

Test/Test.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BookBusinessLogic\BookBusinessLogic.csproj" />
+    <ProjectReference Include="..\BookContract\BookContract.csproj" />
+    <ProjectReference Include="..\BookDatabaseImplement\BookDatabaseImplement.csproj" />
+  </ItemGroup>
+
+</Project>