158 changed files with 79211 additions and 42 deletions
--- a/.gitattributes
+++ b/.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
--- a/.gitignore
+++ b/.gitignore
@ -1,8 +1,7 @@
-# ---> VisualStudio
 ## 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/main/VisualStudio.gitignore
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore

 # User-specific files
 *.rsuser
@ -30,6 +29,7 @@ x86/
 bld/
 [Bb]in/
 [Oo]bj/
+[Oo]ut/
 [Ll]og/
 [Ll]ogs/

@ -91,7 +91,6 @@ StyleCopReport.xml
 *.tmp_proj
 *_wpftmp.csproj
 *.log
-*.tlog
 *.vspscc
 *.vssscc
 .builds
@ -295,17 +294,6 @@ node_modules/
 # Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
 *.vbw

-# Visual Studio 6 auto-generated project file (contains which files were open etc.)
-*.vbp
-
-# Visual Studio 6 workspace and project file (working project files containing files to include in project)
-*.dsw
-*.dsp
-
-# Visual Studio 6 technical files
-*.ncb
-*.aps
-
 # Visual Studio LightSwitch build output
 **/*.HTMLClient/GeneratedArtifacts
 **/*.DesktopClient/GeneratedArtifacts
@ -362,9 +350,6 @@ ASALocalRun/
 # Local History for Visual Studio
 .localhistory/

-# Visual Studio History (VSHistory) files
-.vshistory/
-
 # BeatPulse healthcheck temp database
 healthchecksdb

@ -375,26 +360,4 @@ MigrationBackup/
 .ionide/

 # Fody - auto-generated XML schema
-FodyWeavers.xsd
-
-# VS Code files for those working on multiple tools
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-*.code-workspace
-
-# Local History for Visual Studio Code
-.history/
-
-# Windows Installer files from build outputs
-*.cab
-*.msi
-*.msix
-*.msm
-*.msp
-
-# JetBrains Rider
-*.sln.iml
-
+FodyWeavers.xsd
--- a/Forum.sln
+++ b/Forum.sln
@ -0,0 +1,73 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32825.248
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumView", "ForumView\ForumView.csproj", "{79DC3161-0FFB-4832-B2DC-DB5AE48DA9AB}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumDataModels", "ForumDataModels\ForumDataModels.csproj", "{B2D1577A-49BC-4D1B-A8A0-029BB21EEC5B}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumContracts", "ForumContracts\ForumContracts.csproj", "{41257133-A3B7-497B-B615-AEFB2305E7F6}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumDatabaseImplement", "ForumDatabaseImplement\ForumDatabaseImplement.csproj", "{2C535F67-58F0-4098-99D8-9AF46BAC8605}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumBusinessLogic", "ForumBusinessLogic\ForumBusinessLogic.csproj", "{70B2DA03-F38D-42B0-81AC-13CD959750DD}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumRestApi", "ForumRestApi\ForumRestApi.csproj", "{53155982-EDFA-4038-87DF-5A99E6D8C758}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ForumUserApp", "ForumUserApp\ForumUserApp.csproj", "{CDAB926A-2C76-427D-A1D4-76A3E3092A4A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ForumMongoDataBase", "ForumMongoDataBase\ForumMongoDataBase.csproj", "{C8AA8117-89C1-4B41-91D0-B9CD248EA08F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ToMongoDB", "ToMongoDB\ToMongoDB.csproj", "{1C827109-83C3-4DDE-8DF2-30DF9631E984}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{79DC3161-0FFB-4832-B2DC-DB5AE48DA9AB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79DC3161-0FFB-4832-B2DC-DB5AE48DA9AB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79DC3161-0FFB-4832-B2DC-DB5AE48DA9AB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79DC3161-0FFB-4832-B2DC-DB5AE48DA9AB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B2D1577A-49BC-4D1B-A8A0-029BB21EEC5B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B2D1577A-49BC-4D1B-A8A0-029BB21EEC5B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B2D1577A-49BC-4D1B-A8A0-029BB21EEC5B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B2D1577A-49BC-4D1B-A8A0-029BB21EEC5B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{41257133-A3B7-497B-B615-AEFB2305E7F6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{41257133-A3B7-497B-B615-AEFB2305E7F6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{41257133-A3B7-497B-B615-AEFB2305E7F6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{41257133-A3B7-497B-B615-AEFB2305E7F6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2C535F67-58F0-4098-99D8-9AF46BAC8605}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2C535F67-58F0-4098-99D8-9AF46BAC8605}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2C535F67-58F0-4098-99D8-9AF46BAC8605}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2C535F67-58F0-4098-99D8-9AF46BAC8605}.Release|Any CPU.Build.0 = Release|Any CPU
+		{70B2DA03-F38D-42B0-81AC-13CD959750DD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{70B2DA03-F38D-42B0-81AC-13CD959750DD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{70B2DA03-F38D-42B0-81AC-13CD959750DD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{70B2DA03-F38D-42B0-81AC-13CD959750DD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{53155982-EDFA-4038-87DF-5A99E6D8C758}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{53155982-EDFA-4038-87DF-5A99E6D8C758}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{53155982-EDFA-4038-87DF-5A99E6D8C758}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{53155982-EDFA-4038-87DF-5A99E6D8C758}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CDAB926A-2C76-427D-A1D4-76A3E3092A4A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CDAB926A-2C76-427D-A1D4-76A3E3092A4A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CDAB926A-2C76-427D-A1D4-76A3E3092A4A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CDAB926A-2C76-427D-A1D4-76A3E3092A4A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C8AA8117-89C1-4B41-91D0-B9CD248EA08F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C8AA8117-89C1-4B41-91D0-B9CD248EA08F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C8AA8117-89C1-4B41-91D0-B9CD248EA08F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C8AA8117-89C1-4B41-91D0-B9CD248EA08F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1C827109-83C3-4DDE-8DF2-30DF9631E984}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1C827109-83C3-4DDE-8DF2-30DF9631E984}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1C827109-83C3-4DDE-8DF2-30DF9631E984}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1C827109-83C3-4DDE-8DF2-30DF9631E984}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {877C9F0F-56FC-4459-BABB-6548C0024653}
+	EndGlobalSection
+EndGlobal
--- a/ForumBusinessLogic/BusinessLogic/AnswerLogic.cs
+++ b/ForumBusinessLogic/BusinessLogic/AnswerLogic.cs
@ -0,0 +1,127 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumBusinessLogic.BusinessLogic
+{
+    public class AnswerLogic : IAnswerLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly IAnswerStorage _answerStorage;
+
+        public AnswerLogic(ILogger<AnswerLogic> logger, IAnswerStorage answerStorage)
+        {
+            _logger = logger;
+            _answerStorage = answerStorage;
+        }
+
+        public bool Create(AnswerBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_answerStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Delete(AnswerBindingModel model)
+        {
+            CheckModel(model, false);
+
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+            if (_answerStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public AnswerViewModel? ReadElement(AnswerSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. AnswerDes:{AnswerDes}.Id:{ Id}", model.AnswerDes, model.Id);
+
+            var element = _answerStorage.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<AnswerViewModel>? ReadList(AnswerSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. AnswerDes:{AnswerDes}.Id:{ Id}", model?.AnswerDes, model?.Id);
+
+            var list = model == null ? _answerStorage.GetFullList() : _answerStorage.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(AnswerBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_answerStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CheckModel(AnswerBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.AnswerDes))
+            {
+                throw new ArgumentNullException("Нет ответа", nameof(model.AnswerDes));
+            }
+
+            _logger.LogInformation("Answer. AnswerDes:{AnswerDes}.ResponseDate:{ ResponseDate}. Id: { Id}", model.AnswerDes, model.ResponseDate, model.Id);
+        }
+    }
+}
--- a/ForumBusinessLogic/BusinessLogic/CategoryLogic.cs
+++ b/ForumBusinessLogic/BusinessLogic/CategoryLogic.cs
@ -0,0 +1,121 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumBusinessLogic.BusinessLogic
+{
+    public class CategoryLogic : ICategoryLogic
+    {
+        private readonly ILogger _logger;
+        private readonly ICategoryStorage _categoryStorage;
+
+        public CategoryLogic(ILogger<CategoryLogic> logger, ICategoryStorage categoryStorage)
+        {
+            _logger = logger;
+            _categoryStorage = categoryStorage;
+        }
+
+        public bool Create(CategoryBindingModel model)
+        {
+            CheckModel(model);
+            if (_categoryStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(CategoryBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_categoryStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public CategoryViewModel? ReadElement(CategorySearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Name:{FIO}.Id:{ Id}",
+                model.Name, model.Id);
+            var element = _categoryStorage.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<CategoryViewModel>? ReadList(CategorySearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Name:{Name}.Id:{ Id} ", model?.Name, model?.Id);
+            var list = (model == null) ? _categoryStorage.GetFullList() :
+            _categoryStorage.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(CategoryBindingModel model)
+        {
+            CheckModel(model);
+            if (_categoryStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(CategoryBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия категории", nameof(model.Name));
+            }
+            if (string.IsNullOrEmpty(model.Description))
+            {
+                throw new ArgumentNullException("Нет описания категории", nameof(model.Description));
+            }
+            _logger.LogInformation("Caregory. Id: {Id}, Name: {Name}", model.Id, model.Name);
+            var element = _categoryStorage.GetElement(new CategorySearchModel
+            {
+                Name = model.Name,
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Категория с таким названием уже есть");
+            }
+        }
+    }
+}
--- a/ForumBusinessLogic/BusinessLogic/QuestionLogic.cs
+++ b/ForumBusinessLogic/BusinessLogic/QuestionLogic.cs
@ -0,0 +1,143 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumBusinessLogic.BusinessLogic
+{
+    public class QuestionLogic : IQuestionLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly IQuestionStorage _questionStorage;
+
+        public QuestionLogic(ILogger<QuestionLogic> logger, IQuestionStorage questionStorage)
+        {
+            _logger = logger;
+            _questionStorage = questionStorage;
+        }
+        public bool Create(QuestionBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_questionStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Delete(QuestionBindingModel model)
+        {
+            CheckModel(model, false);
+
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+            if (_questionStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public QuestionViewModel? ReadElement(QuestionSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. QuestionDes:{QuestionDes}.Id:{ Id}", model.QuestionDes, model.Id);
+
+            var element = _questionStorage.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<QuestionViewModel>? ReadList(QuestionSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. QuestionDes:{QuestionDes}.Id:{ Id}", model?.QuestionDes, model?.Id);
+
+            var list = model == null ? _questionStorage.GetFullList() : _questionStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+
+            return list;
+        }
+
+        public List<QuestionViewModel>? HardRequest(QuestionSearchModel? model)
+        {
+            return _questionStorage.HardRequest(new QuestionSearchModel
+            {
+                DateFrom = model.DateFrom,
+                DateTo = model.DateTo
+            })
+                .Select(x => new QuestionViewModel
+                {
+                    CreateDate = x.CreateDate,
+                    QuestionDes = x.QuestionDes,
+                    UserName = x.UserName,
+                    CategoryName = x.CategoryName
+                })
+                .ToList();
+        }
+
+        public bool Update(QuestionBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_questionStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        private void CheckModel(QuestionBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.QuestionDes))
+            {
+                throw new ArgumentNullException("Нет вопроса", nameof(model.QuestionDes));
+            }
+
+            _logger.LogInformation("Question. QuestionDes:{QuestionDes}.CreateDate:{ CreateDate}. Id: { Id}", model.QuestionDes, model.CreateDate, model.Id);
+        }
+    }
+}
--- a/ForumBusinessLogic/BusinessLogic/UserLogic.cs
+++ b/ForumBusinessLogic/BusinessLogic/UserLogic.cs
@ -0,0 +1,133 @@
+using ForumContracts.BindingModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace ForumBusinessLogic.BusinessLogic
+{
+    public class UserLogic : IUserLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IUserStorage _userStorage;
+        public UserLogic(ILogger<UserLogic> logger, IUserStorage userStorage)
+        {
+            _logger = logger;
+            _userStorage = userStorage;
+        }
+
+        public bool Create(UserBindingModel model)
+        {
+            CheckModel(model);
+            if (_userStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(UserBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(model.Nickname))
+            {
+                throw new ArgumentNullException("Нет ника пользователя", nameof(model.Nickname));
+            }
+
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                throw new ArgumentNullException("Нет почты пользователя", nameof(model.Email));
+            }
+
+            if (string.IsNullOrEmpty(model.Password))
+            {
+                throw new ArgumentNullException("Нет пароля пользователя", nameof(model.Password));
+            }
+
+            _logger.LogInformation("User. Nickname: {Nickname}. Email: {Email}. Id: {Id}", model.Nickname, model.Email, model.Id);
+
+            var element = _userStorage.GetElement(new UserSearchModel
+            {
+                Nickname = model.Nickname,
+                Email = model.Email
+            });
+
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Пользователь с такой почтой и ником уже есть");
+            }
+        }
+
+        public bool Delete(UserBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id: {Id}", model.Id);
+            if (_userStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public UserViewModel? ReadElement(UserSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. Nickname: {Nickname}. Email: {Email}. Id: {Id}.", model.Nickname, model.Email, model.Id);
+            var element = _userStorage.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<UserViewModel>? ReadList(UserSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Nickname: {Nickname}. Email: {Email}. Id: {Id}.", model?.Nickname, model?.Email, model?.Id);
+            var list = model == null ? _userStorage.GetFullList() : _userStorage.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(UserBindingModel model)
+        {
+            CheckModel(model);
+            if (_userStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+    }
+}
--- a/ForumBusinessLogic/ForumBusinessLogic.csproj
+++ b/ForumBusinessLogic/ForumBusinessLogic.csproj
@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+    <ProjectReference Include="..\ForumDatabaseImplement\ForumDatabaseImplement.csproj" />
+    <ProjectReference Include="..\ForumMongoDataBase\ForumMongoDataBase.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumContracts/BindingModels/AnswerBindingModel.cs
+++ b/ForumContracts/BindingModels/AnswerBindingModel.cs
@ -0,0 +1,22 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BindingModels
+{
+    public class AnswerBindingModel : IAnswerModel
+    {
+        public string AnswerDes { get; set; } = string.Empty;
+
+        public DateTime ResponseDate { get; set; } = DateTime.Now;
+
+        public int QuestionId { get; set; }
+
+        public int UserId { get; set; }
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/BindingModels/CategoryBindingModel.cs
+++ b/ForumContracts/BindingModels/CategoryBindingModel.cs
@ -0,0 +1,18 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BindingModels
+{
+    public class CategoryBindingModel : ICategoryModel
+    {
+        public string Name { get; set; } = string.Empty;
+
+        public string Description { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/BindingModels/QuestionBindingModel.cs
+++ b/ForumContracts/BindingModels/QuestionBindingModel.cs
@ -0,0 +1,22 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BindingModels
+{
+    public class QuestionBindingModel : IQuestionModel
+    {
+        public string QuestionDes { get; set; } = string.Empty;
+
+        public DateTime CreateDate { get; set; } = DateTime.Now;
+
+        public int UserId { get; set; }
+
+        public int CategoryId { get; set; }
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/BindingModels/UserBindingModel.cs
+++ b/ForumContracts/BindingModels/UserBindingModel.cs
@ -0,0 +1,24 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BindingModels
+{
+    public class UserBindingModel : IUserModel
+    {
+        public string Nickname { get; set; } = string.Empty;
+
+        public string Password { get; set; } = string.Empty;
+
+        public string Email { get; set; } = string.Empty;
+
+        public DateTime RegistrationDate { get; set; } = DateTime.Now;
+
+        public DateTime ActivityDate { get; set; } = DateTime.Now;
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/BusinessLogicContracts/IAnswerLogic.cs
+++ b/ForumContracts/BusinessLogicContracts/IAnswerLogic.cs
@ -0,0 +1,20 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BusinessLogicContracts
+{
+    public interface IAnswerLogic
+    {
+        List<AnswerViewModel>? ReadList(AnswerSearchModel? model);
+        AnswerViewModel? ReadElement(AnswerSearchModel model);
+        bool Create(AnswerBindingModel model);
+        bool Update(AnswerBindingModel model);
+        bool Delete(AnswerBindingModel model);
+    }
+}
--- a/ForumContracts/BusinessLogicContracts/ICategoryLogic.cs
+++ b/ForumContracts/BusinessLogicContracts/ICategoryLogic.cs
@ -0,0 +1,20 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BusinessLogicContracts
+{
+    public interface ICategoryLogic
+    {
+        List<CategoryViewModel>? ReadList(CategorySearchModel? model);
+        CategoryViewModel? ReadElement(CategorySearchModel model);
+        bool Create(CategoryBindingModel model);
+        bool Update(CategoryBindingModel model);
+        bool Delete(CategoryBindingModel model);
+    }
+}
--- a/ForumContracts/BusinessLogicContracts/IQuestionLogic.cs
+++ b/ForumContracts/BusinessLogicContracts/IQuestionLogic.cs
@ -0,0 +1,21 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BusinessLogicContracts
+{
+    public interface IQuestionLogic
+    {
+        List<QuestionViewModel>? ReadList(QuestionSearchModel? model);
+        QuestionViewModel? ReadElement(QuestionSearchModel model);
+        List<QuestionViewModel>? HardRequest(QuestionSearchModel? model);
+        bool Create(QuestionBindingModel model);
+        bool Update(QuestionBindingModel model);
+        bool Delete(QuestionBindingModel model);
+    }
+}
--- a/ForumContracts/BusinessLogicContracts/IUserLogic.cs
+++ b/ForumContracts/BusinessLogicContracts/IUserLogic.cs
@ -0,0 +1,20 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.BusinessLogicContracts
+{
+    public interface IUserLogic
+    {
+        List<UserViewModel>? ReadList(UserSearchModel? model);
+        UserViewModel? ReadElement(UserSearchModel model);
+        bool Create(UserBindingModel model);
+        bool Update(UserBindingModel model);
+        bool Delete(UserBindingModel model);
+    }
+}
--- a/ForumContracts/ForumContracts.csproj
+++ b/ForumContracts/ForumContracts.csproj
@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumDataModels\ForumDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumContracts/SearchModels/AnswerSearchModel.cs
+++ b/ForumContracts/SearchModels/AnswerSearchModel.cs
@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.SearchModels
+{
+    public class AnswerSearchModel
+    {
+        public string? AnswerDes { get; set; }
+        public DateTime? ResponseDate { get; set; }
+        public int? QuestionId { get; set; }
+        public int? UserId { get; set; }
+        public int? Id { get; set; }
+    }
+}
--- a/ForumContracts/SearchModels/CategorySearchModel.cs
+++ b/ForumContracts/SearchModels/CategorySearchModel.cs
@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.SearchModels
+{
+    public class CategorySearchModel
+    {
+        public string? Name { get; set; }
+        public string? Description { get; set; }
+        public int? Id { get; set; }
+    }
+}
--- a/ForumContracts/SearchModels/QuestionSearchModel.cs
+++ b/ForumContracts/SearchModels/QuestionSearchModel.cs
@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.SearchModels
+{
+    public class QuestionSearchModel
+    {
+        public string? QuestionDes { get; set; }
+        public DateTime? CreateDate { get; set; }
+        public DateTime? DateFrom { get; set; }
+        public DateTime? DateTo { get; set; }
+        public int? UserId { get; set; }
+        public int? CategoryId { get; set; }
+        public int? Id { get; set; }
+    }
+}
--- a/ForumContracts/SearchModels/UserSearchModel.cs
+++ b/ForumContracts/SearchModels/UserSearchModel.cs
@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.SearchModels
+{
+    public class UserSearchModel
+    {
+        public int? Id { get; set; }
+        public string? Nickname { get; set; }
+        public string? Password { get; set; }
+        public string? Email { get; set; }
+        public DateTime? RegistrationDate { get; set; }
+        public DateTime? ActivityDate { get; set; }
+    }
+}
--- a/ForumContracts/StorageContracts/IAnswerStorage.cs
+++ b/ForumContracts/StorageContracts/IAnswerStorage.cs
@ -0,0 +1,21 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.StorageContracts
+{
+    public interface IAnswerStorage
+    {
+        List<AnswerViewModel> GetFullList();
+        List<AnswerViewModel> GetFilteredList(AnswerSearchModel model);
+        AnswerViewModel? GetElement(AnswerSearchModel model);
+        AnswerViewModel? Insert(AnswerBindingModel model);
+        AnswerViewModel? Update(AnswerBindingModel model);
+        AnswerViewModel? Delete(AnswerBindingModel model);
+    }
+}
--- a/ForumContracts/StorageContracts/ICategoryStorage.cs
+++ b/ForumContracts/StorageContracts/ICategoryStorage.cs
@ -0,0 +1,21 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.StorageContracts
+{
+    public interface ICategoryStorage
+    {
+        List<CategoryViewModel> GetFullList();
+        List<CategoryViewModel> GetFilteredList(CategorySearchModel model);
+        CategoryViewModel? GetElement(CategorySearchModel model);
+        CategoryViewModel? Insert(CategoryBindingModel model);
+        CategoryViewModel? Update(CategoryBindingModel model);
+        CategoryViewModel? Delete(CategoryBindingModel model);
+    }
+}
--- a/ForumContracts/StorageContracts/IQuestionStorage.cs
+++ b/ForumContracts/StorageContracts/IQuestionStorage.cs
@ -0,0 +1,22 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.StorageContracts
+{
+    public interface IQuestionStorage
+    {
+        List<QuestionViewModel> GetFullList();
+        List<QuestionViewModel> GetFilteredList(QuestionSearchModel model);
+        List<QuestionViewModel> HardRequest(QuestionSearchModel model);
+        QuestionViewModel? GetElement(QuestionSearchModel model);
+        QuestionViewModel? Insert(QuestionBindingModel model);
+        QuestionViewModel? Update(QuestionBindingModel model);
+        QuestionViewModel? Delete(QuestionBindingModel model);
+    }
+}
--- a/ForumContracts/StorageContracts/IUserStorage.cs
+++ b/ForumContracts/StorageContracts/IUserStorage.cs
@ -0,0 +1,21 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.StorageContracts
+{
+    public interface IUserStorage
+    {
+        List<UserViewModel> GetFullList();
+        List<UserViewModel> GetFilteredList(UserSearchModel model);
+        UserViewModel? GetElement(UserSearchModel model);
+        UserViewModel? Insert(UserBindingModel model);
+        UserViewModel? Update(UserBindingModel model);
+        UserViewModel? Delete(UserBindingModel model);
+    }
+}
--- a/ForumContracts/ViewModels/AnswerViewModel.cs
+++ b/ForumContracts/ViewModels/AnswerViewModel.cs
@ -0,0 +1,34 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.ViewModels
+{
+    public class AnswerViewModel : IAnswerModel
+    {
+        [DisplayName("Ответ на вопрос")]
+        public string AnswerDes { get; set; } = string.Empty;
+
+        [DisplayName("Дата ответа")]
+        public DateTime ResponseDate { get; set; } = DateTime.Now;
+
+        [DisplayName("Автор ответа")]
+        public string AuthorAnswer { get; set; } = string.Empty;
+
+        [DisplayName("Содержание вопроса")]
+        public string QuestionText { get; set; } = string.Empty;
+
+        [DisplayName("Дата создания вопроса")]
+        public DateTime QuestionCreateDate { get; set; } = DateTime.Now;
+
+        public int QuestionId { get; set; }
+
+        public int UserId { get; set; }
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/ViewModels/CategoryViewModel.cs
+++ b/ForumContracts/ViewModels/CategoryViewModel.cs
@ -0,0 +1,21 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.ViewModels
+{
+    public class CategoryViewModel : ICategoryModel
+    {
+        [DisplayName("Название категории")]
+        public string Name { get; set; } = string.Empty;
+
+        [DisplayName("Описание категории")]
+        public string Description { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/ViewModels/QuestionViewModel.cs
+++ b/ForumContracts/ViewModels/QuestionViewModel.cs
@ -0,0 +1,31 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.ViewModels
+{
+    public class QuestionViewModel : IQuestionModel
+    {
+        [DisplayName("Содержание вопроса")]
+        public string QuestionDes { get; set; } = string.Empty;
+
+        [DisplayName("Дата создания вопроса")]
+        public DateTime CreateDate { get; set; } = DateTime.Now;
+
+        [DisplayName("Имя пользователя")]
+        public string UserName { get; set; } = string.Empty;
+
+        [DisplayName("Название категории")]
+        public string CategoryName { get; set; } = string.Empty;
+
+        public int UserId { get; set; }
+
+        public int CategoryId { get; set; }
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumContracts/ViewModels/UserViewModel.cs
+++ b/ForumContracts/ViewModels/UserViewModel.cs
@ -0,0 +1,30 @@
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumContracts.ViewModels
+{
+    public class UserViewModel : IUserModel
+    {
+        [DisplayName("Никнейм")]
+        public string Nickname { get; set; } = string.Empty;
+
+        [DisplayName("Пароль")]
+        public string Password { get; set; } = string.Empty;
+
+        [DisplayName("Эл. почта")]
+        public string Email { get; set; } = string.Empty;
+
+        [DisplayName("Дата регистрации")]
+        public DateTime RegistrationDate { get; set; } = DateTime.Now;
+
+        [DisplayName("Дата активности")]
+        public DateTime ActivityDate { get; set; } = DateTime.Now;
+
+        public int Id { get; set; }
+    }
+}
--- a/ForumDataModels/ForumDataModels.csproj
+++ b/ForumDataModels/ForumDataModels.csproj
@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
--- a/ForumDataModels/IId.cs
+++ b/ForumDataModels/IId.cs
@ -0,0 +1,7 @@
+namespace ForumDataModels
+{
+    public interface IId
+    {
+        int Id { get; }
+    }
+}
--- a/ForumDataModels/Models/IAnswerModel.cs
+++ b/ForumDataModels/Models/IAnswerModel.cs
@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDataModels.Models
+{
+    public interface IAnswerModel : IId
+    {
+        string AnswerDes { get; }
+        DateTime ResponseDate { get; }
+        int QuestionId { get; }
+        int UserId { get; }
+    }
+}
--- a/ForumDataModels/Models/ICategoryModel.cs
+++ b/ForumDataModels/Models/ICategoryModel.cs
@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDataModels.Models
+{
+    public interface ICategoryModel : IId
+    {
+        string Name { get; }
+        string Description { get; }
+    }
+}
--- a/ForumDataModels/Models/IQuestionModel.cs
+++ b/ForumDataModels/Models/IQuestionModel.cs
@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDataModels.Models
+{
+    public interface IQuestionModel : IId
+    {
+        string QuestionDes { get; }
+        DateTime CreateDate { get; }
+        int UserId { get; }
+        int CategoryId { get; }
+    }
+}
--- a/ForumDataModels/Models/IUserModel.cs
+++ b/ForumDataModels/Models/IUserModel.cs
@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDataModels.Models
+{
+    public interface IUserModel : IId
+    {
+        string Nickname { get; }
+        string Password { get; }
+        string Email { get; }
+        DateTime RegistrationDate { get; }
+        DateTime ActivityDate { get; }
+    }
+}
--- a/ForumDatabaseImplement/ForumDataBase.cs
+++ b/ForumDatabaseImplement/ForumDataBase.cs
@ -0,0 +1,26 @@
+using ForumDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System.Collections.Generic;
+
+namespace ForumDatabaseImplement
+{
+    public class ForumDataBase : DbContext
+    {
+        public ForumDataBase()
+        {
+        }
+
+        public ForumDataBase(DbContextOptions<ForumDataBase> options)
+            : base(options)
+        {
+        }
+
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        => optionsBuilder.UseNpgsql("Host=192.168.56.101;Port=5432;Database=Forum;Username=ggg;Password=ankavanka27022003");
+
+        public virtual DbSet<User> Users { set; get; }
+        public virtual DbSet<Answer> Answers { set; get; }
+        public virtual DbSet<Question> Questions { set; get; }
+        public virtual DbSet<Category> Categories { set; get; }
+    }
+}
--- a/ForumDatabaseImplement/ForumDatabaseImplement.csproj
+++ b/ForumDatabaseImplement/ForumDatabaseImplement.csproj
@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="EntityFramework" Version="6.4.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+    <ProjectReference Include="..\ForumDataModels\ForumDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumDatabaseImplement/Implements/AnswerStorage.cs
+++ b/ForumDatabaseImplement/Implements/AnswerStorage.cs
@ -0,0 +1,131 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Implements
+{
+    public class AnswerStorage : IAnswerStorage
+    {
+        public AnswerViewModel? Delete(AnswerBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var element = context.Answers
+                .Include(x => x.User)
+                .Include(x => x.Question)
+                .FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Answers.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+
+        public AnswerViewModel? GetElement(AnswerSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new ForumDataBase();
+
+            return context.Answers
+                    .Include(x => x.User)
+                    .Include(x => x.Question)
+                    .FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public List<AnswerViewModel> GetFilteredList(AnswerSearchModel model)
+        {
+            if (model.Id.HasValue)
+            {
+                var result = GetElement(model);
+                return result != null ? new() { result } : new();
+            }
+
+            using var context = new ForumDataBase();
+            IQueryable<Answer>? queryWhere = null;
+
+            if (model.QuestionId.HasValue)
+            {
+                queryWhere = context.Answers.Where(x => x.QuestionId == model.QuestionId);
+            }
+            else
+            {
+                return new();
+            }
+
+            return queryWhere
+                    .Include(x => x.Question)
+                    .Include(x => x.User)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<AnswerViewModel> GetFullList()
+        {
+            using var context = new ForumDataBase();
+
+            return context.Answers
+                .Include(x => x.User)
+                .Include(x => x.Question)
+                .Select(x => x.GetViewModel).ToList();
+        }
+
+        public AnswerViewModel? Insert(AnswerBindingModel model)
+        {
+            var newAnswer = Answer.Create(model);
+
+            if (newAnswer == null)
+            {
+                return null;
+            }
+
+            using var context = new ForumDataBase();
+
+            context.Answers.Add(newAnswer);
+            context.SaveChanges();
+
+            return context.Answers
+                .Include(x => x.Question)
+                .Include(x => x.User)
+                .FirstOrDefault(x => x.Id == newAnswer.Id)
+                ?.GetViewModel;
+        }
+
+        public AnswerViewModel? Update(AnswerBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var answer = context.Answers
+                .Include(x => x.Question)
+                .Include(x => x.User)
+                .FirstOrDefault(x => x.Id == model.Id);
+
+            if (answer == null)
+            {
+                return null;
+            }
+
+            answer.Update(model);
+            context.SaveChanges();
+
+            return answer.GetViewModel;
+        }
+    }
+}
--- a/ForumDatabaseImplement/Implements/CategoryStorage.cs
+++ b/ForumDatabaseImplement/Implements/CategoryStorage.cs
@ -0,0 +1,111 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Implements
+{
+    public class CategoryStorage : ICategoryStorage
+    {
+        public CategoryViewModel? Delete(CategoryBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var res = context.Categories
+                .FirstOrDefault(x => x.Id == model.Id);
+
+            if (res != null)
+            {
+                context.Categories.Remove(res);
+                context.SaveChanges();
+            }
+
+            return res?.GetViewModel;
+        }
+
+        public CategoryViewModel? GetElement(CategorySearchModel model)
+        {
+            using var context = new ForumDataBase();
+
+            if (model.Id.HasValue)
+                return context.Categories
+                    .FirstOrDefault(x => x.Id == model.Id)
+                    ?.GetViewModel;
+
+            return null;
+        }
+
+        public List<CategoryViewModel> GetFilteredList(CategorySearchModel model)
+        {
+            if (model == null)
+            {
+                return new();
+            }
+
+            if (model.Id.HasValue)
+            {
+                var res = GetElement(model);
+
+                return res != null ? new() { res } : new();
+            }
+
+            if (model.Name != null)
+            {
+                using var context = new ForumDataBase();
+
+                return context.Categories
+                    .Where(x => x.Name.Equals(model.Name))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+
+            return new();
+        }
+
+        public List<CategoryViewModel> GetFullList()
+        {
+            using var context = new ForumDataBase();
+
+            return context.Categories
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public CategoryViewModel? Insert(CategoryBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var res = Category.Create(model);
+
+            if (res != null)
+            {
+                context.Categories.Add(res);
+                context.SaveChanges();
+            }
+
+            return res?.GetViewModel;
+        }
+
+        public CategoryViewModel? Update(CategoryBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var res = context.Categories
+                .FirstOrDefault(x => x.Id == model.Id);
+
+            if (res != null)
+            {
+                res.Update(model);
+                context.SaveChanges();
+            }
+
+            return res?.GetViewModel;
+        }
+    }
+}
--- a/ForumDatabaseImplement/Implements/QuestionStorage.cs
+++ b/ForumDatabaseImplement/Implements/QuestionStorage.cs
@ -0,0 +1,148 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Implements
+{
+    public class QuestionStorage : IQuestionStorage
+    {
+        public QuestionViewModel? Delete(QuestionBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var element = context.Questions
+                .Include(x => x.User)
+                .Include(x => x.Category)
+                .FirstOrDefault(rec => rec.Id == model.Id);
+
+            if (element != null)
+            {
+                context.Questions.Remove(element);
+                context.SaveChanges();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+
+        public QuestionViewModel? GetElement(QuestionSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new ForumDataBase();
+
+            return context.Questions
+                    .Include(x => x.User)
+                    .Include(x => x.Category)
+                    .FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public List<QuestionViewModel> GetFilteredList(QuestionSearchModel model)
+        {
+            if (model.Id.HasValue)
+            {
+                var result = GetElement(model);
+                return result != null ? new() { result } : new();
+            }
+
+            using var context = new ForumDataBase();
+            IQueryable<Question>? queryWhere = null;
+
+            if (model.CategoryId.HasValue)
+            {
+                queryWhere = context.Questions.Where(x => x.CategoryId == model.CategoryId);
+            }
+            else if (model.UserId.HasValue)
+            {
+                queryWhere = context.Questions.Where(x => x.UserId == model.UserId);
+            }
+
+            else
+            {
+                return new();
+            }
+
+            return queryWhere
+                    .Include(x => x.Category)
+                    .Include(x => x.User)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<QuestionViewModel> HardRequest(QuestionSearchModel model)
+        {
+            using var context = new ForumDataBase();
+            return context.Questions.
+                OrderBy(x => x.CreateDate)
+                .Include(x => x.Category)
+                .Include(x => x.User)
+                .Where(x => x.CreateDate.Date >= model.DateFrom.Value.Date && x.CreateDate.Date <= model.DateTo.Value.Date)
+                .Select(x=>x.GetViewModel)
+                .ToList();
+        }
+
+        public List<QuestionViewModel> GetFullList()
+        {
+            using var context = new ForumDataBase();
+
+            return context.Questions
+                .Include(x => x.User)
+                .Include(x => x.Category)
+                .Select(x => x.GetViewModel).ToList();
+        }
+
+        public QuestionViewModel? Insert(QuestionBindingModel model)
+        {
+            var newQuestion = Question.Create(model);
+
+            if (newQuestion == null)
+            {
+                return null;
+            }
+
+            using var context = new ForumDataBase();
+
+            context.Questions.Add(newQuestion);
+            context.SaveChanges();
+
+            return context.Questions
+                .Include(x => x.Category)
+                .Include(x => x.User)
+                .FirstOrDefault(x => x.Id == newQuestion.Id)
+                ?.GetViewModel;
+        }
+
+        public QuestionViewModel? Update(QuestionBindingModel model)
+        {
+            using var context = new ForumDataBase();
+
+            var question = context.Questions
+                .Include(x => x.Category)
+                .Include(x => x.User)
+                .FirstOrDefault(x => x.Id == model.Id);
+
+            if (question == null)
+            {
+                return null;
+            }
+
+            question.Update(model);
+            context.SaveChanges();
+
+            return question.GetViewModel;
+        }
+    }
+}
--- a/ForumDatabaseImplement/Implements/UserStorage.cs
+++ b/ForumDatabaseImplement/Implements/UserStorage.cs
@ -0,0 +1,83 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Implements
+{
+    public class UserStorage : IUserStorage
+    {
+        public UserViewModel? Delete(UserBindingModel model)
+        {
+            using var context = new ForumDataBase();
+            var element = context.Users.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Users.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public UserViewModel? GetElement(UserSearchModel model)
+        {
+            using var context = new ForumDataBase();
+            if (model.Id.HasValue)
+                return context.Users.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
+            if (!string.IsNullOrEmpty(model.Nickname) && !string.IsNullOrEmpty(model.Password))
+                return context.Users.FirstOrDefault(x => x.Nickname.Equals(model.Nickname) && x.Password.Equals(model.Password))?.GetViewModel;
+            if (!string.IsNullOrEmpty(model.Email))
+                return context.Users.FirstOrDefault(x => x.Email.Equals(model.Email))?.GetViewModel;
+            return null;
+        }
+
+        public List<UserViewModel> GetFilteredList(UserSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Nickname))
+            {
+                return new();
+            }
+            using var context = new ForumDataBase();
+            return context.Users.Where(x => x.Nickname.Contains(model.Nickname)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<UserViewModel> GetFullList()
+        {
+            using var context = new ForumDataBase();
+            return context.Users.Select(x => x.GetViewModel).ToList();
+        }
+
+        public UserViewModel? Insert(UserBindingModel model)
+        {
+            var newUser = User.Create(model);
+            if (newUser == null)
+            {
+                return null;
+            }
+            using var context = new ForumDataBase();
+            context.Users.Add(newUser);
+            context.SaveChanges();
+            return newUser.GetViewModel;
+        }
+
+        public UserViewModel? Update(UserBindingModel model)
+        {
+            using var context = new ForumDataBase();
+            var user = context.Users.FirstOrDefault(x => x.Id == model.Id);
+            if (user == null)
+            {
+                return null;
+            }
+            user.Update(model);
+            context.SaveChanges();
+            return user.GetViewModel;
+        }
+    }
+}
--- a/ForumDatabaseImplement/Migrations/20230430154303_InitDb.Designer.cs
+++ b/ForumDatabaseImplement/Migrations/20230430154303_InitDb.Designer.cs
@ -0,0 +1,197 @@
+// <auto-generated />
+using System;
+using ForumDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ForumDatabaseImplement.Migrations
+{
+    [DbContext(typeof(ForumDataBase))]
+    [Migration("20230430154303_InitDb")]
+    partial class InitDb
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Answer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("AnswerDes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("ResponseDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("QuestionId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Category", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CategoryId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("CreateDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("QuestionDes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CategoryId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Questions");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("ActivityDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Nickname")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("RegistrationDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Answer", b =>
+                {
+                    b.HasOne("ForumDatabaseImplement.Models.Question", "Question")
+                        .WithMany("Answers")
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ForumDatabaseImplement.Models.User", "User")
+                        .WithMany("Answers")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Question");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.HasOne("ForumDatabaseImplement.Models.Category", "Category")
+                        .WithMany("Questions")
+                        .HasForeignKey("CategoryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ForumDatabaseImplement.Models.User", "User")
+                        .WithMany("Questions")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Category");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Category", b =>
+                {
+                    b.Navigation("Questions");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.User", b =>
+                {
+                    b.Navigation("Answers");
+
+                    b.Navigation("Questions");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/ForumDatabaseImplement/Migrations/20230430154303_InitDb.cs
+++ b/ForumDatabaseImplement/Migrations/20230430154303_InitDb.cs
@ -0,0 +1,139 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ForumDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitDb : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Categories",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    Description = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Categories", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Users",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Nickname = table.Column<string>(type: "text", nullable: false),
+                    Password = table.Column<string>(type: "text", nullable: false),
+                    Email = table.Column<string>(type: "text", nullable: false),
+                    RegistrationDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    ActivityDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Questions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    CreateDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    CategoryId = table.Column<int>(type: "integer", nullable: false),
+                    QuestionDes = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Questions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Questions_Categories_CategoryId",
+                        column: x => x.CategoryId,
+                        principalTable: "Categories",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Questions_Users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Answers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ResponseDate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    QuestionId = table.Column<int>(type: "integer", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false),
+                    AnswerDes = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Answers", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Answers_Questions_QuestionId",
+                        column: x => x.QuestionId,
+                        principalTable: "Questions",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Answers_Users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Answers_QuestionId",
+                table: "Answers",
+                column: "QuestionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Answers_UserId",
+                table: "Answers",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Questions_CategoryId",
+                table: "Questions",
+                column: "CategoryId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Questions_UserId",
+                table: "Questions",
+                column: "UserId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Answers");
+
+            migrationBuilder.DropTable(
+                name: "Questions");
+
+            migrationBuilder.DropTable(
+                name: "Categories");
+
+            migrationBuilder.DropTable(
+                name: "Users");
+        }
+    }
+}
--- a/ForumDatabaseImplement/Migrations/ForumDataBaseModelSnapshot.cs
+++ b/ForumDatabaseImplement/Migrations/ForumDataBaseModelSnapshot.cs
@ -0,0 +1,194 @@
+// <auto-generated />
+using System;
+using ForumDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ForumDatabaseImplement.Migrations
+{
+    [DbContext(typeof(ForumDataBase))]
+    partial class ForumDataBaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Answer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("AnswerDes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("ResponseDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("QuestionId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Category", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Categories");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("CategoryId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("CreateDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("QuestionDes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CategoryId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Questions");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("ActivityDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Nickname")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("RegistrationDate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Answer", b =>
+                {
+                    b.HasOne("ForumDatabaseImplement.Models.Question", "Question")
+                        .WithMany("Answers")
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ForumDatabaseImplement.Models.User", "User")
+                        .WithMany("Answers")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Question");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.HasOne("ForumDatabaseImplement.Models.Category", "Category")
+                        .WithMany("Questions")
+                        .HasForeignKey("CategoryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ForumDatabaseImplement.Models.User", "User")
+                        .WithMany("Questions")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Category");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Category", b =>
+                {
+                    b.Navigation("Questions");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.Question", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("ForumDatabaseImplement.Models.User", b =>
+                {
+                    b.Navigation("Answers");
+
+                    b.Navigation("Questions");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
--- a/ForumDatabaseImplement/Models/Answer.cs
+++ b/ForumDatabaseImplement/Models/Answer.cs
@ -0,0 +1,81 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Answer : IAnswerModel
+    {
+        [Required]
+        public DateTime ResponseDate { get; set; } = DateTime.Now;
+
+        public int QuestionId { get; set; }
+
+        public int UserId { get; set; }
+
+        public int Id { get; set; }
+
+        [Required]
+        public string AnswerDes { get; set; } = string.Empty;
+
+        public virtual User User { get; set; }
+
+        public virtual Question Question { get; set; }
+
+        public static Answer? Create(AnswerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Answer()
+            {
+                Id = model.Id,
+                ResponseDate = model.ResponseDate,
+                UserId = model.UserId,
+                QuestionId = model.QuestionId,
+                AnswerDes = model.AnswerDes
+            };
+        }
+        public static Answer Create(AnswerViewModel model)
+        {
+            return new Answer
+            {
+                Id = model.Id,
+                UserId = model.UserId,
+                QuestionId = model.QuestionId,
+                ResponseDate = model.ResponseDate,
+                AnswerDes = model.AnswerDes
+            };
+        }
+        public void Update(AnswerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            UserId = model.UserId;
+            QuestionId = model.QuestionId;
+            ResponseDate = model.ResponseDate;
+            AnswerDes = model.AnswerDes;
+        }
+        public AnswerViewModel GetViewModel => new()
+        {
+            AuthorAnswer= User?.Nickname ?? string.Empty,
+            QuestionCreateDate =Question?.CreateDate ?? DateTime.Now,
+            QuestionText = Question?.QuestionDes ?? string.Empty,
+            Id = Id,
+            ResponseDate = ResponseDate,
+            UserId = UserId,
+            QuestionId = QuestionId,
+            AnswerDes = AnswerDes
+        };
+    }
+}
--- a/ForumDatabaseImplement/Models/Category.cs
+++ b/ForumDatabaseImplement/Models/Category.cs
@ -0,0 +1,66 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Category : ICategoryModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [Required]
+        public string Description { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+
+        [ForeignKey("CategoryId")]
+        public virtual List<Question> Questions { get; set; } = new();
+
+        public static Category? Create(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Category()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Description = model.Description
+            };
+        }
+        public static Category Create(CategoryViewModel model)
+        {
+            return new Category
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Description = model.Description
+            };
+        }
+        public void Update(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Description = model.Description;
+        }
+        public CategoryViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Description = Description
+        };
+    }
+}
--- a/ForumDatabaseImplement/Models/Question.cs
+++ b/ForumDatabaseImplement/Models/Question.cs
@ -0,0 +1,84 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Question : IQuestionModel
+    {
+        [Required]
+        public DateTime CreateDate { get; set; } = DateTime.Now;
+
+        public int UserId { get; set; }
+
+        public int CategoryId { get; set; }
+
+        public int Id { get; set; }
+
+        [Required]
+        public string QuestionDes { get; set; } = string.Empty;
+
+        public virtual User User { get; set; }
+
+        public virtual Category Category { get; set; }
+
+        [ForeignKey("QuestionId")]
+        public virtual List<Answer> Answers { get; set; } = new();
+
+        public static Question? Create(QuestionBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Question()
+            {
+                Id = model.Id,
+                CreateDate = model.CreateDate,
+                UserId = model.UserId,
+                CategoryId = model.CategoryId,
+                QuestionDes = model.QuestionDes
+            };
+        }
+        public static Question Create(QuestionViewModel model)
+        {
+            return new Question
+            {
+                Id = model.Id,
+                UserId = model.UserId,
+                CategoryId = model.CategoryId,
+                CreateDate = model.CreateDate,
+                QuestionDes = model.QuestionDes
+            };
+        }
+        public void Update(QuestionBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            UserId = model.UserId;
+            CategoryId = model.CategoryId;
+            CreateDate = model.CreateDate;
+            QuestionDes = model.QuestionDes;
+        }
+        public QuestionViewModel GetViewModel => new()
+        {
+            Id = Id,
+            UserId = UserId,
+            UserName = User?.Nickname ?? string.Empty,
+            CategoryId = CategoryId,
+            CreateDate = CreateDate,
+            QuestionDes = QuestionDes,
+            CategoryName=Category?.Name
+        };
+    }
+}
--- a/ForumDatabaseImplement/Models/User.cs
+++ b/ForumDatabaseImplement/Models/User.cs
@ -0,0 +1,89 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class User : IUserModel
+    {
+        [Required]
+        public string Nickname { get; set; } = string.Empty;
+
+        [Required]
+        public string Password { get; set; } = string.Empty;
+
+        [Required]
+        public string Email { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime RegistrationDate { get; set; } = DateTime.Now;
+
+        [Required]
+        public DateTime ActivityDate { get; set; } = DateTime.Now;
+
+        public int Id { get; set; }
+
+        [ForeignKey("UserId")]
+        public virtual List<Answer> Answers { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Question> Questions { get; set; } = new();
+
+        public static User? Create(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new User()
+            {
+                Id = model.Id,
+                Nickname = model.Nickname,
+                Password = model.Password,
+                Email = model.Email,
+                RegistrationDate = model.RegistrationDate,
+                ActivityDate = model.ActivityDate
+            };
+        }
+        public static User Create(UserViewModel model)
+        {
+            return new User
+            {
+                Id = model.Id,
+                Nickname = model.Nickname,
+                Password = model.Password,
+                Email = model.Email,
+                RegistrationDate = model.RegistrationDate,
+                ActivityDate = model.ActivityDate
+            };
+        }
+        public void Update(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Nickname = model.Nickname;
+            Password = model.Password;
+            Email = model.Email;
+            RegistrationDate = model.RegistrationDate;
+            ActivityDate = model.ActivityDate;
+        }
+        public UserViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Nickname = Nickname,
+            Password = Password,
+            Email = Email,
+            RegistrationDate = RegistrationDate,
+            ActivityDate = ActivityDate
+        };
+    }
+}
--- a/ForumMongoDataBase/ForumMongoDataBase.cs
+++ b/ForumMongoDataBase/ForumMongoDataBase.cs
@ -0,0 +1,19 @@
+using MongoDB.Driver;
+
+namespace ForumMongoDataBase
+{
+	public class ForumMongoDataBase
+	{
+		private static ForumMongoDataBase instance;
+		public MongoClient client;
+		private ForumMongoDataBase()
+		{ client = new MongoClient("mongodb://localhost:27017"); }
+
+		public static ForumMongoDataBase getInstance()
+		{
+			if (instance == null)
+				instance = new ForumMongoDataBase();
+			return instance;
+		}
+	}
+}
--- a/ForumMongoDataBase/ForumMongoDataBase.csproj
+++ b/ForumMongoDataBase/ForumMongoDataBase.csproj
@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MongoDB.Driver" Version="2.19.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+    <ProjectReference Include="..\ForumDataModels\ForumDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumMongoDataBase/Implements/AnswerStorage.cs
+++ b/ForumMongoDataBase/Implements/AnswerStorage.cs
@ -0,0 +1,120 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using MongoDB.Bson;
+using MongoDB.Driver;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumMongoDataBase.Implements
+{
+	public class AnswerStorage : IAnswerStorage
+	{
+		private readonly IMongoCollection<Answer> _collection;
+		public MongoClient context;
+
+		public AnswerStorage()
+		{
+			context = ForumMongoDataBase.getInstance().client;
+			_collection = context.GetDatabase("forum").GetCollection<Answer>("answers");
+		}
+
+		public AnswerViewModel? Delete(AnswerBindingModel model)
+		{
+			var filter = Builders<Answer>.Filter.Eq(a => a.Id, model.Id);
+			var answer = _collection.FindOneAndDelete(filter);
+
+			if (answer == null)
+			{
+				return null;
+			}
+
+			return answer.GetViewModel();
+		}
+
+		public AnswerViewModel? GetElement(AnswerSearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+
+			var answer = _collection.Find(a => a.Id == model.Id.Value)
+									 .FirstOrDefault();
+
+			if (answer == null)
+			{
+				return null;
+			}
+
+			return answer.GetViewModel();
+		}
+
+		public List<AnswerViewModel> GetFilteredList(AnswerSearchModel model)
+		{
+			var filter = Builders<Answer>.Filter.Empty;
+
+			if (model.Id.HasValue)
+			{
+				filter &= Builders<Answer>.Filter.Eq(a => a.Id, model.Id.Value);
+			}
+
+			if (model.QuestionId.HasValue)
+			{
+				filter &= Builders<Answer>.Filter.Eq(a => a.QuestionId, model.QuestionId.Value);
+			}
+			else
+			{
+				return new List<AnswerViewModel>();
+			}
+
+			var answers = _collection.Find(filter)
+									 .ToList()
+									 .Select(a => a.GetViewModel())
+									 .ToList();
+
+			return answers;
+		}
+
+		public List<AnswerViewModel> GetFullList()
+		{
+			var answers = _collection.Find(_ => true)
+									 .ToList()
+									 .Select(a => a.GetViewModel())
+									 .ToList();
+
+			return answers;
+		}
+
+		public AnswerViewModel? Insert(AnswerBindingModel model)
+		{
+			var answer = Answer.Create(model);
+
+			if (answer == null)
+			{
+				return null;
+			}
+
+			_collection.InsertOne(answer);
+
+			return answer.GetViewModel();
+		}
+
+		public AnswerViewModel? Update(AnswerBindingModel model)
+		{
+			var filter = Builders<Answer>.Filter.Eq(a => a.Id, model.Id);
+			var answer = _collection.Find(filter).FirstOrDefault();
+
+			answer.Update(model);
+			_collection.ReplaceOne(filter, answer);
+
+			return answer.GetViewModel();
+		}
+	}
+}
+
--- a/ForumMongoDataBase/Implements/CategoryStorage.cs
+++ b/ForumMongoDataBase/Implements/CategoryStorage.cs
@ -0,0 +1,119 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using MongoDB.Driver;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ForumDatabaseImplement.Models;
+
+namespace ForumMongoDataBase.Implements
+{
+	public class CategoryStorage : ICategoryStorage
+	{
+		private readonly IMongoCollection<Category> _collection;
+		public MongoClient context;
+
+		public CategoryStorage()
+		{
+			context = ForumMongoDataBase.getInstance().client;
+			_collection = context.GetDatabase("forum").GetCollection<Category>("categories");
+		}
+
+		public CategoryViewModel? Delete(CategoryBindingModel model)
+		{
+			var filter = Builders<Category>.Filter.Eq(c => c.Id, model.Id);
+			var category = _collection.FindOneAndDelete(filter);
+
+			if (category == null)
+			{
+				return null;
+			}
+
+			return category.GetViewModel();
+		}
+
+		public CategoryViewModel? GetElement(CategorySearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+
+			var category = _collection.Find(c => c.Id == model.Id.Value)
+									   .FirstOrDefault();
+
+			if (category == null)
+			{
+				return null;
+			}
+
+			return category.GetViewModel();
+		}
+
+		public List<CategoryViewModel> GetFilteredList(CategorySearchModel model)
+		{
+			var filter = Builders<Category>.Filter.Empty;
+
+			if (model.Id.HasValue)
+			{
+				filter &= Builders<Category>.Filter.Eq(c => c.Id, model.Id.Value);
+			}
+
+			if (model.Name != null)
+			{
+				filter &= Builders<Category>.Filter.Eq(c => c.Name, model.Name);
+			}
+
+			var categories = _collection.Find(filter)
+										 .ToList()
+										 .Select(c => c.GetViewModel())
+										 .ToList();
+
+			return categories;
+		}
+
+		public List<CategoryViewModel> GetFullList()
+		{
+			var categories = _collection.Find(_ => true)
+										 .ToList()
+										 .Select(c => c.GetViewModel())
+										 .ToList();
+
+			return categories;
+		}
+
+		public CategoryViewModel? Insert(CategoryBindingModel model)
+		{
+			var category = Category.Create(model);
+
+			if (category == null)
+			{
+				return null;
+			}
+
+			_collection.InsertOne(category);
+
+			return category.GetViewModel();
+		}
+
+		public CategoryViewModel? Update(CategoryBindingModel model)
+		{
+			var filter = Builders<Category>.Filter.Eq(c => c.Id, model.Id);
+			var category = _collection.Find(filter).FirstOrDefault();
+
+			if (category == null)
+			{
+				return null;
+			}
+
+			category.Update(model);
+			_collection.ReplaceOne(filter, category);
+
+			return category.GetViewModel();
+		}
+	}
+}
--- a/ForumMongoDataBase/Implements/QuestionStorage.cs
+++ b/ForumMongoDataBase/Implements/QuestionStorage.cs
@ -0,0 +1,141 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using MongoDB.Bson;
+using MongoDB.Driver;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumMongoDataBase.Implements
+{
+	public class QuestionStorage : IQuestionStorage
+	{
+		public MongoClient context;
+		private readonly IMongoCollection<Question> _collection;
+
+		public QuestionStorage()
+		{
+			context = ForumMongoDataBase.getInstance().client;
+			_collection = context.GetDatabase("forum").GetCollection<Question>("questions");
+		}
+
+		public QuestionViewModel? Delete(QuestionBindingModel model)
+		{
+			var filter = Builders<Question>.Filter.Eq(q => q.Id, model.Id);
+			var question = _collection.FindOneAndDelete(filter);
+
+			if (question == null)
+			{
+				return null;
+			}
+
+			return question.GetViewModel();
+		}
+
+		public QuestionViewModel? GetElement(QuestionSearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+
+			var question = _collection.Find(q => q.Id == model.Id.Value)
+									   .FirstOrDefault();
+
+			if (question == null)
+			{
+				return null;
+			}
+
+			return question.GetViewModel();
+		}
+
+		public List<QuestionViewModel> GetFilteredList(QuestionSearchModel model)
+		{
+			var filter = Builders<Question>.Filter.Empty;
+
+			if (model.Id.HasValue)
+			{
+				filter &= Builders<Question>.Filter.Eq(q => q.Id, model.Id.Value);
+			}
+
+			if (model.CategoryId.HasValue)
+			{
+				filter &= Builders<Question>.Filter.Eq(q => q.CategoryId, model.CategoryId.Value);
+			}
+
+			if (model.UserId.HasValue)
+			{
+				filter &= Builders<Question>.Filter.Eq(q => q.UserId, model.UserId.Value);
+			}
+
+			var questions = _collection.Find(filter)
+									   .ToList()
+									   .Select(q => q.GetViewModel())
+									   .ToList();
+
+			return questions;
+		}
+
+		public List<QuestionViewModel> HardRequest(QuestionSearchModel model)
+		{
+			var filter = Builders<Question>.Filter.And(
+							Builders<Question>.Filter.Gte(q => q.CreateDate, model.DateFrom),
+							Builders<Question>.Filter.Lte(q => q.CreateDate, model.DateTo));
+
+			var questions = _collection.Find(filter)
+									   .SortBy(q => q.CreateDate)
+									   .ToList()
+									   .Select(q => q.GetViewModel())
+									   .ToList();
+
+			return questions;
+		}
+
+		public List<QuestionViewModel> GetFullList()
+		{
+			var questions = _collection.Find(_ => true)
+									   .ToList()
+									   .Select(q => q.GetViewModel())
+									   .ToList();
+
+			return questions;
+		}
+
+		public QuestionViewModel? Insert(QuestionBindingModel model)
+		{
+			var question = Question.Create(model);
+
+			if (question == null)
+			{
+				return null;
+			}
+
+			_collection.InsertOne(question);
+
+			return question.GetViewModel();
+		}
+
+		public QuestionViewModel? Update(QuestionBindingModel model)
+		{
+			var filter = Builders<Question>.Filter.Eq(q => q.Id, model.Id);
+			var question = _collection.Find(filter).FirstOrDefault();
+
+			if (question == null)
+			{
+				return null;
+			}
+
+			question.Update(model);
+			_collection.ReplaceOne(filter, question);
+
+			return question.GetViewModel();
+		}
+	}
+}
+
--- a/ForumMongoDataBase/Implements/UserStorage.cs
+++ b/ForumMongoDataBase/Implements/UserStorage.cs
@ -0,0 +1,128 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StorageContracts;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using MongoDB.Bson;
+using MongoDB.Driver;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumMongoDataBase.Implements
+{
+	public class UserStorage : IUserStorage
+	{
+		private readonly IMongoCollection<User> _collection;
+		public MongoClient context;
+
+		public UserStorage()
+		{
+			context = ForumMongoDataBase.getInstance().client;
+			_collection = context.GetDatabase("forum").GetCollection<User>("users");
+		}
+
+		public UserViewModel? Delete(UserBindingModel model)
+		{
+			var filter = Builders<User>.Filter.Eq(u => u.Id, model.Id);
+			var user = _collection.FindOneAndDelete(filter);
+
+			if (user == null)
+			{
+				return null;
+			}
+
+			return user.GetViewModel();
+		}
+
+		public UserViewModel? GetElement(UserSearchModel model)
+		{
+			var filter = Builders<User>.Filter.Empty;
+
+			if (model.Id.HasValue)
+			{
+				filter &= Builders<User>.Filter.Eq(u => u.Id, model.Id.Value);
+			}
+
+			if (!string.IsNullOrEmpty(model.Nickname) && !string.IsNullOrEmpty(model.Password))
+			{
+				filter &= Builders<User>.Filter.Eq(u => u.Nickname, model.Nickname)
+					   & Builders<User>.Filter.Eq(u => u.Password, model.Password);
+			}
+
+			if (!string.IsNullOrEmpty(model.Email))
+			{
+				filter &= Builders<User>.Filter.Eq(u => u.Email, model.Email);
+			}
+
+			var user = _collection.Find(filter)
+								   .FirstOrDefault();
+
+			if (user == null)
+			{
+				return null;
+			}
+
+			return user.GetViewModel();
+		}
+
+		public List<UserViewModel> GetFilteredList(UserSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.Nickname))
+			{
+				return new List<UserViewModel>();
+			}
+
+			var filter = Builders<User>.Filter.Regex(u => u.Nickname, new BsonRegularExpression(model.Nickname, "i"));
+
+			var users = _collection.Find(filter)
+								   .ToList()
+								   .Select(u => u.GetViewModel())
+								   .ToList();
+
+			return users;
+		}
+
+		public List<UserViewModel> GetFullList()
+		{
+			var users = _collection.Find(_ => true)
+								   .ToList()
+								   .Select(u => u.GetViewModel())
+								   .ToList();
+
+			return users;
+		}
+
+		public UserViewModel? Insert(UserBindingModel model)
+		{
+			var user = User.Create(model);
+
+			if (user == null)
+			{
+				return null;
+			}
+
+			_collection.InsertOne(user);
+
+			return user.GetViewModel();
+		}
+
+		public UserViewModel? Update(UserBindingModel model)
+		{
+			var filter = Builders<User>.Filter.Eq(u => u.Id, model.Id);
+			var user = _collection.Find(filter).FirstOrDefault();
+
+			if (user == null)
+			{
+				return null;
+			}
+
+			user.Update(model);
+			_collection.ReplaceOne(filter, user);
+
+			return user.GetViewModel();
+		}
+	}
+}
--- a/ForumMongoDataBase/Models/Answer.cs
+++ b/ForumMongoDataBase/Models/Answer.cs
@ -0,0 +1,85 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Answer : IAnswerModel
+    {
+        [Required]
+        public DateTime ResponseDate { get; set; } = DateTime.Now;
+
+        public int QuestionId { get; set; }
+
+        public int UserId { get; set; }
+
+        public int Id { get; set; }
+
+        [Required]
+        public string AnswerDes { get; set; } = string.Empty;
+
+        public virtual User User { get; set; }
+
+        public virtual Question Question { get; set; }
+
+        public static Answer? Create(AnswerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Answer()
+            {
+                Id = model.Id,
+                ResponseDate = model.ResponseDate,
+                UserId = model.UserId,
+                QuestionId = model.QuestionId,
+                AnswerDes = model.AnswerDes
+			};
+        }
+        public static Answer Create(AnswerViewModel model)
+        {
+            return new Answer
+            {
+                Id = model.Id,
+                UserId = model.UserId,
+                QuestionId = model.QuestionId,
+                ResponseDate = model.ResponseDate,
+                AnswerDes = model.AnswerDes
+            };
+        }
+        public void Update(AnswerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            UserId = model.UserId;
+            QuestionId = model.QuestionId;
+            ResponseDate = model.ResponseDate;
+            AnswerDes = model.AnswerDes;
+        }
+
+		public AnswerViewModel? GetViewModel()
+		{
+            return new()
+			{
+				AuthorAnswer = User?.Nickname ?? string.Empty,
+				QuestionCreateDate = Question?.CreateDate ?? DateTime.Now,
+				QuestionText = Question?.QuestionDes ?? string.Empty,
+				Id = Id,
+				ResponseDate = ResponseDate,
+				UserId = UserId,
+				QuestionId = QuestionId,
+				AnswerDes = AnswerDes
+			};
+		}
+    }
+}
--- a/ForumMongoDataBase/Models/Category.cs
+++ b/ForumMongoDataBase/Models/Category.cs
@ -0,0 +1,70 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Category : ICategoryModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [Required]
+        public string Description { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+
+        [ForeignKey("CategoryId")]
+        public virtual List<Question> Questions { get; set; } = new();
+
+        public static Category? Create(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Category()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Description = model.Description
+            };
+        }
+        public static Category Create(CategoryViewModel model)
+        {
+            return new Category
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Description = model.Description
+            };
+        }
+        public void Update(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Description = model.Description;
+        }
+
+		public CategoryViewModel? GetViewModel()
+        {
+            return new()
+			{
+				Id = Id,
+				Name = Name,
+				Description = Description
+			};
+		} 
+    }
+}
--- a/ForumMongoDataBase/Models/Question.cs
+++ b/ForumMongoDataBase/Models/Question.cs
@ -0,0 +1,87 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class Question : IQuestionModel
+    {
+        [Required]
+        public DateTime CreateDate { get; set; } = DateTime.Now;
+
+        public int UserId { get; set; }
+
+        public int CategoryId { get; set; }
+
+        public int Id { get; set; }
+
+        [Required]
+        public string QuestionDes { get; set; } = string.Empty;
+
+        public virtual User User { get; set; }
+
+        public virtual Category Category { get; set; }
+
+        [ForeignKey("QuestionId")]
+        public virtual List<Answer> Answers { get; set; } = new();
+
+        public static Question? Create(QuestionBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Question()
+            {
+                Id = model.Id,
+                CreateDate = model.CreateDate,
+                UserId = model.UserId,
+                CategoryId = model.CategoryId,
+                QuestionDes = model.QuestionDes
+            };
+        }
+        public static Question Create(QuestionViewModel model)
+        {
+            return new Question
+            {
+                Id = model.Id,
+                UserId = model.UserId,
+                CategoryId = model.CategoryId,
+                CreateDate = model.CreateDate,
+                QuestionDes = model.QuestionDes
+            };
+        }
+        public void Update(QuestionBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            UserId = model.UserId;
+            CategoryId = model.CategoryId;
+            CreateDate = model.CreateDate;
+            QuestionDes = model.QuestionDes;
+        }
+        public QuestionViewModel GetViewModel()
+        {
+            return new()
+			{
+				Id = Id,
+				UserId = UserId,
+				UserName = User?.Nickname ?? string.Empty,
+				CategoryId = CategoryId,
+				CreateDate = CreateDate,
+				QuestionDes = QuestionDes,
+				CategoryName = Category?.Name
+			};
+		} 
+    }
+}
--- a/ForumMongoDataBase/Models/User.cs
+++ b/ForumMongoDataBase/Models/User.cs
@ -0,0 +1,92 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ForumDatabaseImplement.Models
+{
+    public class User : IUserModel
+    {
+        [Required]
+        public string Nickname { get; set; } = string.Empty;
+
+        [Required]
+        public string Password { get; set; } = string.Empty;
+
+        [Required]
+        public string Email { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime RegistrationDate { get; set; } = DateTime.Now;
+
+        [Required]
+        public DateTime ActivityDate { get; set; } = DateTime.Now;
+
+        public int Id { get; set; }
+
+        [ForeignKey("UserId")]
+        public virtual List<Answer> Answers { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Question> Questions { get; set; } = new();
+
+        public static User? Create(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new User()
+            {
+                Id = model.Id,
+                Nickname = model.Nickname,
+                Password = model.Password,
+                Email = model.Email,
+                RegistrationDate = model.RegistrationDate,
+                ActivityDate = model.ActivityDate
+            };
+        }
+        public static User Create(UserViewModel model)
+        {
+            return new User
+            {
+                Id = model.Id,
+                Nickname = model.Nickname,
+                Password = model.Password,
+                Email = model.Email,
+                RegistrationDate = model.RegistrationDate,
+                ActivityDate = model.ActivityDate
+            };
+        }
+        public void Update(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Nickname = model.Nickname;
+            Password = model.Password;
+            Email = model.Email;
+            RegistrationDate = model.RegistrationDate;
+            ActivityDate = model.ActivityDate;
+        }
+        public UserViewModel GetViewModel()
+        {
+            return new()
+			{
+				Id = Id,
+				Nickname = Nickname,
+				Password = Password,
+				Email = Email,
+				RegistrationDate = RegistrationDate,
+				ActivityDate = ActivityDate
+			};
+		} 
+    }
+}
--- a/ForumRestApi/Controllers/MainController.cs
+++ b/ForumRestApi/Controllers/MainController.cs
@ -0,0 +1,198 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using ForumDatabaseImplement.Models;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ForumRestApi.Controllers
+{
+    [Route("api/[controller]/[action]")]
+    [ApiController]
+    public class MainController : Controller
+    {
+        private readonly ILogger _logger;
+        private readonly IAnswerLogic _answer;
+        private readonly IQuestionLogic _question;
+        private readonly ICategoryLogic _category;
+        public MainController(ILogger<MainController> logger, IAnswerLogic answer, IQuestionLogic question, ICategoryLogic category)
+        {
+            _logger = logger;
+            _answer = answer;
+            _question = question;
+            _category = category;
+        }
+
+        [HttpGet]
+        public List<CategoryViewModel>? GetCategoryList()
+        {
+            try
+            {
+                return _category.ReadList(null);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения списка категорий");
+                throw;
+            }
+        }
+
+        [HttpGet]
+        public List<AnswerViewModel>? GetAnswersByQuestion(int questionId)
+        {
+            try
+            {            
+                return _answer.ReadList(new AnswerSearchModel
+                {
+                    QuestionId = questionId
+                });              
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения списка ответов вопроса id ={ questionId}", questionId);
+                throw;
+            }
+        }
+
+        [HttpGet]
+        public CategoryViewModel? GetCategory(int categoryId)
+        {
+            try
+            {
+                return _category.ReadElement(new CategorySearchModel
+                {
+                    Id = categoryId
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения категории по id={categoryId}", categoryId);
+                throw;
+            }
+        }
+
+        [HttpGet]
+        public List<QuestionViewModel>? GetQuestionsByUser(int userId)
+        {
+            try
+            {
+                return _question.ReadList(new QuestionSearchModel
+                {
+                    UserId = userId
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения списка вопросов пользователя id ={ userId}", userId);
+                throw;
+            }
+        }
+
+        [HttpGet]
+        public List<QuestionViewModel>? HardRequest(DateTime dateFrom,DateTime dateTo)
+        {
+            try
+            {
+                return _question.HardRequest(new QuestionSearchModel
+                {
+                    DateFrom=dateFrom,
+                    DateTo=dateTo
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения списка вопросов");
+                throw;
+            }
+        }
+
+
+        [HttpGet]
+        public List<QuestionViewModel>? GetQuestionsByCategory(int categoryId)
+        {
+            try
+            {            
+                return _question.ReadList(new QuestionSearchModel
+                {
+                    CategoryId = categoryId
+                });           
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения списка вопросов категории id ={ categoryId}", categoryId);
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void DeleteQuestion(QuestionBindingModel model)
+        {
+            try
+            {
+                _question.Delete(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка удаления вопроса");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void DeleteAnswer(AnswerBindingModel model)
+        {
+            try
+            {
+                _answer.Delete(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка удаления ответа");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void CreateCategory(CategoryBindingModel model)
+        {
+            try
+            {
+                _category.Create(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка создания категории");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void CreateAnswer(AnswerBindingModel model)
+        {
+            try
+            {
+                _answer.Create(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка создания ответа");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void CreateQuestion(QuestionBindingModel model)
+        {
+            try
+            {
+                _question.Create(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка создания вопроса");
+                throw;
+            }
+        }
+    }
+}
--- a/ForumRestApi/Controllers/UserController.cs
+++ b/ForumRestApi/Controllers/UserController.cs
@ -0,0 +1,70 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using ForumContracts.ViewModels;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System.Diagnostics;
+
+namespace ForumRestApi.Controllers
+{
+    [Route("api/[controller]/[action]")]
+    [ApiController]
+    public class UserController : Controller
+    {
+        private readonly ILogger _logger;
+        private readonly IUserLogic _logic;
+        public UserController(IUserLogic logic, ILogger<UserController> logger)
+        {
+            _logger = logger;
+            _logic = logic;
+        }
+
+        [HttpGet]
+        public UserViewModel? Login(string login, string password)
+        {
+            try
+            {
+                return _logic.ReadElement(new UserSearchModel
+                {
+                    Email = login,
+                    Password = password
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка входа в систему");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void Register(UserBindingModel model)
+        {
+            try
+            {
+                _logic.Create(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка регистрации");
+                throw;
+            }
+        }
+
+        [HttpPost]
+        public void UpdateData(UserBindingModel model)
+        {
+            try
+            {
+                _logic.Update(model);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка обновления данных");
+                throw;
+            }
+        }
+
+    }
+}
--- a/ForumRestApi/ForumRestApi.csproj
+++ b/ForumRestApi/ForumRestApi.csproj
@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="log4net" Version="2.0.15" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.2.3" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumBusinessLogic\ForumBusinessLogic.csproj" />
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+    <ProjectReference Include="..\ForumDatabaseImplement\ForumDatabaseImplement.csproj" />
+    <ProjectReference Include="..\ForumMongoDataBase\ForumMongoDataBase.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumRestApi/Program.cs
+++ b/ForumRestApi/Program.cs
@ -0,0 +1,51 @@
+using ForumBusinessLogic.BusinessLogic;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.StorageContracts;
+using ForumMongoDataBase.Implements;
+using Microsoft.OpenApi.Models;
+using NLog.Extensions.Logging;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Logging.SetMinimumLevel(LogLevel.Trace);
+builder.Logging.AddNLog("log4net.config");
+
+// Add services to the container.
+builder.Services.AddTransient<IAnswerStorage, AnswerStorage>();
+builder.Services.AddTransient<IQuestionStorage, QuestionStorage>();
+builder.Services.AddTransient<IUserStorage, UserStorage>();
+builder.Services.AddTransient<ICategoryStorage, CategoryStorage>();
+
+builder.Services.AddTransient<IAnswerLogic, AnswerLogic>();
+builder.Services.AddTransient<IQuestionLogic, QuestionLogic>();
+builder.Services.AddTransient<IUserLogic, UserLogic>();
+builder.Services.AddTransient<ICategoryLogic, CategoryLogic>();
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen(c =>
+{
+    c.SwaggerDoc("v1", new OpenApiInfo
+    {
+        Title = "ForumRestApi",
+        Version = "v1"
+    });
+});
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "ForumRestApi v1"));
+}
+
+app.UseHttpsRedirection();
+AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();
--- a/ForumRestApi/Properties/launchSettings.json
+++ b/ForumRestApi/Properties/launchSettings.json
@ -0,0 +1,31 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:27698",
+      "sslPort": 44340
+    }
+  },
+  "profiles": {
+    "ForumRestApi": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7124;http://localhost:5124",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
--- a/ForumRestApi/appsettings.Development.json
+++ b/ForumRestApi/appsettings.Development.json
@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
--- a/ForumRestApi/appsettings.json
+++ b/ForumRestApi/appsettings.json
@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}
--- a/ForumUserApp/APIClient.cs
+++ b/ForumUserApp/APIClient.cs
@ -0,0 +1,49 @@
+using ForumContracts.ViewModels;
+using Newtonsoft.Json;
+using System.Net.Http.Headers;
+using System.Text;
+
+namespace ForumUserApp
+{
+    public class APIClient
+    {
+        private static readonly HttpClient _client = new();
+
+        public static UserViewModel? User { get; set; } = null;
+
+        public static void Connect(IConfiguration configuration)
+        {
+            _client.BaseAddress = new Uri(configuration["IPAddress"]);
+            _client.DefaultRequestHeaders.Accept.Clear();
+            _client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+        }
+
+        public static T? GetRequest<T>(string requestUrl)
+        {
+            var response = _client.GetAsync(requestUrl);
+            var result = response.Result.Content.ReadAsStringAsync().Result;
+            if (response.Result.IsSuccessStatusCode)
+            {
+                return JsonConvert.DeserializeObject<T>(result);
+            }
+            else
+            {
+                throw new Exception(result);
+            }
+        }
+
+        public static void PostRequest<T>(string requestUrl, T model)
+        {
+            var json = JsonConvert.SerializeObject(model);
+            var data = new StringContent(json, Encoding.UTF8, "application/json");
+
+            var response = _client.PostAsync(requestUrl, data);
+
+            var result = response.Result.Content.ReadAsStringAsync().Result;
+            if (!response.Result.IsSuccessStatusCode)
+            {
+                throw new Exception(result);
+            }
+        }
+    }
+}
--- a/ForumUserApp/Controllers/HomeController.cs
+++ b/ForumUserApp/Controllers/HomeController.cs
@ -0,0 +1,239 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumUserApp.Models;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System.Diagnostics;
+using static System.Formats.Asn1.AsnWriter;
+
+namespace ForumUserApp.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly ILogger<HomeController> _logger;
+
+        public HomeController(ILogger<HomeController> logger)
+        {
+            _logger = logger;
+        }
+
+        public IActionResult CreateCategory()
+        {
+            return View();
+        }
+
+        [HttpPost]
+        public void CreateCategory(string name, string des)
+        {
+            if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(des))
+            {
+                throw new Exception("Введите название");
+            }
+            if (string.IsNullOrEmpty(des))
+            {
+                throw new Exception("Введите описание");
+            }
+            APIClient.PostRequest("api/main/createcategory", new CategoryBindingModel
+            {
+                Name = name,
+                Description = des
+            });
+            Response.Redirect("Index");
+        }
+
+        public IActionResult CreateQuestion()
+        {
+            ViewBag.Categories = APIClient.GetRequest<List<CategoryViewModel>>("api/main/getcategorylist");
+            return View();
+        }
+
+        [HttpPost]
+        public void CreateQuestion(string questionDes, int categoryId)
+        {
+            if (string.IsNullOrEmpty(questionDes))
+            {
+                throw new Exception("Введите вопрос");
+            }
+            APIClient.PostRequest("api/main/createquestion", new QuestionBindingModel
+            {
+                UserId = APIClient.User.Id,
+                CategoryId=categoryId,
+                QuestionDes = questionDes,
+                CreateDate = DateTime.Now
+            });
+            Response.Redirect("Index");
+        }
+
+        [HttpPost]
+        public void DeleteQuestion(int questionId)
+        {
+            APIClient.PostRequest("api/main/deletequestion", new QuestionBindingModel
+            {
+                Id = questionId
+            });
+            Response.Redirect("Index");
+        }
+
+        [HttpPost]
+        public void DeleteAnswer(int answerId)
+        {
+            APIClient.PostRequest("api/main/deleteanswer", new AnswerBindingModel
+            {
+                Id = answerId
+            });
+            Response.Redirect("Index");
+        }
+
+        public IActionResult Index()
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<CategoryViewModel>>($"api/main/getcategorylist"));
+        }
+
+        public IActionResult Questions(int categoryId)
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<QuestionViewModel>>($"api/main/getquestionsbycategory?categoryId={categoryId}"));
+        }
+
+        public IActionResult UserQuestions()
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<QuestionViewModel>>($"api/main/getquestionsbyuser?userId={APIClient.User.Id}"));
+        }
+
+        public IActionResult HardRequest(DateTime dateFrom,DateTime dateTo)
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<QuestionViewModel>>($"api/main/hardrequest?dateFrom={dateFrom}&dateTo={dateTo}"));
+        }
+
+        public IActionResult CreateAnswer()
+        {
+            return View();
+        }
+
+        [HttpPost]
+        public void CreateAnswer(string answerDes, int questionId)
+        {
+            if (string.IsNullOrEmpty(answerDes))
+            {
+                throw new Exception("Введите ответ");
+            }
+            APIClient.PostRequest("api/main/createanswer", new AnswerBindingModel
+            {
+                UserId = APIClient.User.Id,
+                QuestionId = questionId,
+                AnswerDes = answerDes,
+                ResponseDate = DateTime.Now
+            });
+            Response.Redirect("Index");
+        }
+
+        public IActionResult Answers(int questionId)
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<AnswerViewModel>>($"api/main/getanswersbyquestion?questionId={questionId}"));
+        }
+
+        [HttpGet]
+        public IActionResult Privacy()
+        {
+            if (APIClient.User == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.User);
+        }
+
+        [HttpPost]
+        public void Privacy(string login, string password, string nick)
+        {
+            if (APIClient.User == null)
+            {
+                throw new Exception("Вы как сюда попали? Сюда вход только авторизованным");
+            }
+            if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(nick))
+            {
+                throw new Exception("Введите логин, пароль и никнейм");
+            }
+            APIClient.PostRequest("api/user/updatedata", new UserBindingModel
+            {
+                Id = APIClient.User.Id,
+                Nickname= nick,
+                Email = login,
+                Password = password
+            });
+
+            APIClient.User.Nickname = nick;
+            APIClient.User.Email = login;
+            APIClient.User.Password = password;
+            Response.Redirect("Index");
+        }
+
+        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+        public IActionResult Error()
+        {
+            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
+        }
+
+        [HttpGet]
+        public IActionResult Enter()
+        {
+            return View();
+        }
+
+        [HttpPost]
+        public void Enter(string login, string password)
+        {
+            if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password))
+            {
+                throw new Exception("Введите логин и пароль");
+            }
+            APIClient.User = APIClient.GetRequest<UserViewModel>($"api/user/login?login={login}&password={password}");
+            if (APIClient.User == null)
+            {
+                throw new Exception("Неверный логин/пароль");
+            }
+            Response.Redirect("Index");
+        }
+
+        [HttpGet]
+        public IActionResult Register()
+        {
+            return View();
+        }
+
+        [HttpPost]
+        public void Register(string login, string password, string nick)
+        {
+            if (string.IsNullOrEmpty(login) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(nick))
+            {
+                throw new Exception("Введите логин, пароль и ник");
+            }
+            APIClient.PostRequest("api/user/register", new UserBindingModel
+            {
+                Nickname = nick,
+                Email = login,
+                Password = password
+            });
+            Response.Redirect("Enter");
+            return;
+        }
+    }
+}
--- a/ForumUserApp/ForumUserApp.csproj
+++ b/ForumUserApp/ForumUserApp.csproj
@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/ForumUserApp/Models/ErrorViewModel.cs
+++ b/ForumUserApp/Models/ErrorViewModel.cs
@ -0,0 +1,9 @@
+namespace ForumUserApp.Models
+{
+    public class ErrorViewModel
+    {
+        public string? RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+    }
+}
--- a/ForumUserApp/Program.cs
+++ b/ForumUserApp/Program.cs
@ -0,0 +1,30 @@
+using ForumUserApp;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddControllersWithViews();
+
+var app = builder.Build();
+APIClient.Connect(builder.Configuration);
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Home/Error");
+    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+    app.UseHsts();
+}
+
+app.UseHttpsRedirection();
+app.UseStaticFiles();
+
+app.UseRouting();
+AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+app.UseAuthorization();
+
+app.MapControllerRoute(
+    name: "default",
+    pattern: "{controller=Home}/{action=Index}/{id?}");
+
+app.Run();
--- a/ForumUserApp/Properties/launchSettings.json
+++ b/ForumUserApp/Properties/launchSettings.json
@ -0,0 +1,28 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:24810",
+      "sslPort": 44336
+    }
+  },
+  "profiles": {
+    "ForumUserApp": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7110;http://localhost:5110",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
--- a/ForumUserApp/Views/Home/Answers.cshtml
+++ b/ForumUserApp/Views/Home/Answers.cshtml
@ -0,0 +1,62 @@
+@using ForumContracts.ViewModels
+
+@model List<AnswerViewModel>
+
+@{
+	ViewData["Title"] = "Answer Page";
+}
+
+<div class="text-center">
+<p>
+	@if(Model.Count > 0){
+		<h1>@Model[0].QuestionText</h1>
+		<h5>@Model[0].QuestionCreateDate</h5>
+	}
+</p>
+	<h1 class="display-4">Ответы</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+			<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+						<table class="table">
+							<thead>
+								<tr>
+									<th>
+										Дата ответа
+									</th>
+									<th>
+										Ответ
+									</th>
+								</tr>
+							</thead>
+							<tbody>
+					@foreach (var item in Model)
+				{
+												<tr>
+													<td>
+								@Html.DisplayFor(modelItem => item.ResponseDate)
+													</td>
+													<td>
+								@Html.DisplayFor(modelItem => item.AnswerDes)
+													</td>
+													<td>
+							@if (APIClient.User.Id == item.UserId)
+							{
+																			<form action="DeleteAnswer" method="post">
+																				<input type="hidden" name="answerId" value="@item.Id"/>
+																				<button type="submit" class="btn btn-danger">Удалить</button>
+																			</form>
+							}</td>
+												</tr>
+				}
+							</tbody>
+						</table>
+	}
+</div>
--- a/ForumUserApp/Views/Home/CreateAnswer.cshtml
+++ b/ForumUserApp/Views/Home/CreateAnswer.cshtml
@ -0,0 +1,16 @@
+@{
+	ViewData["Title"] = "CreateAnswer";
+}
+<div class="text-center">
+	<h2 class="display-4">Создание ответа</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Ответ:</div>
+		<div class="col-8"><input type="text" name="answerDes" id="answerDes" /></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Создать" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/CreateCategory.cshtml
+++ b/ForumUserApp/Views/Home/CreateCategory.cshtml
@ -0,0 +1,20 @@
+@{
+	ViewData["Title"] = "CreateCategory";
+}
+<div class="text-center">
+	<h2 class="display-4">Создание категории</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Название:</div>
+		<div class="col-8"><input type="text" name="name" id="name" /></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Описание:</div>
+		<div class="col-8"><input type="text" id="des" name="des" /></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Создать" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/CreateQuestion.cshtml
+++ b/ForumUserApp/Views/Home/CreateQuestion.cshtml
@ -0,0 +1,22 @@
+@{
+	ViewData["Title"] = "CreateQuestion";
+}
+<div class="text-center">
+	<h2 class="display-4">Создание вопроса</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Выберите категорию вопроса:</div>
+		<div class="col-8">
+			<select id="categoryId" name="categoryId" class="form-control" asp-items="@(new SelectList(@ViewBag.Categories,"Id", "Name"))"></select>
+		</div>
+	</div>
+	<div class="row">
+		<div class="col-4">Содержание вопроса:</div>
+		<div class="col-8"><input type="text" name="questionDes" id="questionDes" /></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Создать" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/Enter.cshtml
+++ b/ForumUserApp/Views/Home/Enter.cshtml
@ -0,0 +1,21 @@
+@{
+	ViewData["Title"] = "Enter";
+}
+
+<div class="text-center">
+	<h2 class="display-4">Добро пожаловать на форум!</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Логин:</div>
+		<div class="col-8"><input type="text" name="login" /></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Пароль:</div>
+		<div class="col-8"><input type="password" name="password" /></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Вход" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/HardRequest.cshtml
+++ b/ForumUserApp/Views/Home/HardRequest.cshtml
@ -0,0 +1,69 @@
+@using ForumContracts.ViewModels
+
+@model List<QuestionViewModel>
+
+@{
+	ViewData["Title"] = "HardRequest Page";
+}
+
+<div class="text-center">
+	<h1 class="display-4">Выборка вопросов</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+					<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+			<form method="post">
+		<div class="row">
+			<div class="col-4">С:</div>
+			<div class="col-8"><input type="date" name="dateFrom" /></div>
+		</div>
+		<div class="row">
+			<div class="col-4">По:</div>
+				<div class="col-8"><input type="date" name="dateTo" /></div>
+		</div>
+		<div class="row">
+			<div class="col-8"></div>
+			<div class="col-4"><input type="submit" value="Показать" class="btn btn-primary" /></div>
+		</div>
+	</form>
+
+					<table class="table">
+						<thead>
+							<tr>
+								<th>
+									Дата создания
+								</th>
+									<th>
+										Категория вопроса
+									</th>
+								<th>
+									Вопрос
+								</th>
+							</tr>
+						</thead>
+						<tbody>
+				@foreach (var item in Model)
+				{
+											<tr>
+												<td>
+							@Html.DisplayFor(modelItem => item.CreateDate)
+												</td>
+														<td>
+							@Html.DisplayFor(modelItem => item.CategoryName)
+														</td>
+												<td>
+							@Html.DisplayFor(modelItem => item.QuestionDes)
+												</td>
+											</tr>
+				}
+						</tbody>
+					</table>
+	}
+</div>
--- a/ForumUserApp/Views/Home/Index.cshtml
+++ b/ForumUserApp/Views/Home/Index.cshtml
@ -0,0 +1,59 @@
+@using ForumContracts.ViewModels
+
+@model List<CategoryViewModel>
+
+@{
+	ViewData["Title"] = "Home Page";
+}
+
+<div class="text-center">
+	<h1 class="display-4">Главная страница</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+					<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+			<p>
+				<a asp-action="CreateCategory">Создать категорию</a>
+				<a asp-action="CreateQuestion">Задать вопрос</a>
+			</p>
+
+			<table class="table">
+				<thead>
+					<tr>
+						<th>
+							Имя категории
+						</th>
+						<th>
+							Описание категории
+						</th>
+					</tr>
+				</thead>
+				<tbody>
+				@foreach (var item in Model)
+				{
+							<tr>
+								<td>
+							@Html.DisplayFor(modelItem => item.Name)
+								</td>
+								<td>
+							@Html.DisplayFor(modelItem => item.Description)
+								</td>
+								<td>
+									<form asp-action="Questions" method="post">
+										<input type="hidden" name="categoryId" value="@item.Id"/>
+												<button type="submit" class="btn btn-primary">Выбрать</button>
+									</form>
+								</td>
+							</tr>
+				}
+				</tbody>
+			</table>
+	}
+</div>
--- a/ForumUserApp/Views/Home/Privacy.cshtml
+++ b/ForumUserApp/Views/Home/Privacy.cshtml
@ -0,0 +1,28 @@
+@using ForumContracts.ViewModels
+
+@model UserViewModel
+
+@{
+	ViewData["Title"] = "Privacy Policy";
+}
+<div class="text-center">
+	<h2 class="display-4">Личные данные</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Логин:</div>
+		<div class="col-8"><input type="text" name="login" value="@Model.Email"/></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Пароль:</div>
+		<div class="col-8"><input type="password" name="password"  value="@Model.Password"/></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Ник:</div>
+		<div class="col-8"><input type="text" name="nick"  value="@Model.Nickname"/></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Сохранить" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/Questions.cshtml
+++ b/ForumUserApp/Views/Home/Questions.cshtml
@ -0,0 +1,75 @@
+@using ForumContracts.ViewModels
+
+@model List<QuestionViewModel>
+
+@{
+	ViewData["Title"] = "Question Page";
+}
+
+<div class="text-center">
+	<h1 class="display-4">Вопросы</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+			<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+				<table class="table">
+					<thead>
+						<tr>
+							<th>
+								Дата создания
+							</th>
+							<th>
+								Вопрос
+							</th>
+						</tr>
+					</thead>
+					<tbody>
+				@foreach (var item in Model)
+				{
+									<tr>
+										<td>
+							@Html.DisplayFor(modelItem => item.CreateDate)
+										</td>
+										<td>
+							@Html.DisplayFor(modelItem => item.QuestionDes)
+										</td>
+										<td>
+											<div class="container">
+												<div class="row">
+													<div class="col">
+														<form asp-action="CreateAnswer" method="get">
+															<input type="hidden" name="questionId" value="@item.Id" />
+																	<button type="submit" class="btn btn-success">Ответить</button>
+														</form>
+													</div>
+													<div class="col">
+																<form action="Answers" method="post">
+																	<input type="hidden" name="questionId" value="@item.Id"/>
+																	<button type="submit" class="btn btn-primary">Выбрать</button>
+																</form>
+													</div>
+													<div class="col">
+														@if (APIClient.User.Id == item.UserId)
+															{
+																<form action="DeleteQuestion" method="post">
+																	<input type="hidden" name="questionId" value="@item.Id"/>
+																	<button type="submit" class="btn btn-danger">Удалить</button>
+																</form>
+															}
+													</div>
+												</div>
+											</div>
+										</td>
+									</tr>
+				}
+					</tbody>
+				</table>
+	}
+</div>
--- a/ForumUserApp/Views/Home/Register.cshtml
+++ b/ForumUserApp/Views/Home/Register.cshtml
@ -0,0 +1,25 @@
+@{
+	ViewData["Title"] = "Register";
+}
+
+<div class="text-center">
+	<h2 class="display-4">Регистрация</h2>
+</div>
+<form method="post">
+	<div class="row">
+		<div class="col-4">Логин:</div>
+		<div class="col-8"><input type="text" name="login" /></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Пароль:</div>
+		<div class="col-8"><input type="password" name="password" /></div>
+	</div>
+	<div class="row">
+		<div class="col-4">Ник:</div>
+		<div class="col-8"><input type="text" name="nick" /></div>
+	</div>
+	<div class="row">
+		<div class="col-8"></div>
+		<div class="col-4"><input type="submit" value="Регистрация" class="btn btn-primary" /></div>
+	</div>
+</form>
--- a/ForumUserApp/Views/Home/UserQuestions.cshtml
+++ b/ForumUserApp/Views/Home/UserQuestions.cshtml
@ -0,0 +1,75 @@
+@using ForumContracts.ViewModels
+
+@model List<QuestionViewModel>
+
+@{
+	ViewData["Title"] = "UserQuestions Page";
+}
+
+<div class="text-center">
+	<h1 class="display-4">Мои вопросы</h1>
+</div>
+
+
+<div class="text-center">
+	@{
+		if (Model == null)
+		{
+			<h3 class="display-4">Авторизируйтесь</h3>
+			return;
+		}
+
+				<table class="table">
+					<thead>
+						<tr>
+							<th>
+								Дата создания
+							</th>
+							<th>
+								Вопрос
+							</th>
+						</tr>
+					</thead>
+					<tbody>
+				@foreach (var item in Model)
+				{
+									<tr>
+										<td>
+							@Html.DisplayFor(modelItem => item.CreateDate)
+										</td>
+										<td>
+							@Html.DisplayFor(modelItem => item.QuestionDes)
+										</td>
+										<td>
+											<div class="container">
+												<div class="row">
+													<div class="col">
+														<form asp-action="CreateAnswer" method="get">
+															<input type="hidden" name="questionId" value="@item.Id" />
+																	<button type="submit" class="btn btn-success">Ответить</button>
+														</form>
+													</div>
+													<div class="col">
+																<form action="Answers" method="post">
+																	<input type="hidden" name="questionId" value="@item.Id"/>
+																	<button type="submit" class="btn btn-primary">Выбрать</button>
+																</form>
+													</div>
+													<div class="col">
+														@if (APIClient.User.Id == item.UserId)
+															{
+																<form action="DeleteQuestion" method="post">
+																	<input type="hidden" name="questionId" value="@item.Id"/>
+																	<button type="submit" class="btn btn-danger">Удалить</button>
+																</form>
+															}
+													</div>
+												</div>
+											</div>
+										</td>
+									</tr>
+				}
+					</tbody>
+				</table>
+	}
+</div>
--- a/ForumUserApp/Views/Shared/Error.cshtml
+++ b/ForumUserApp/Views/Shared/Error.cshtml
@ -0,0 +1,25 @@
+@model ErrorViewModel
+@{
+    ViewData["Title"] = "Error";
+}
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (Model.ShowRequestId)
+{
+        <p>
+            <strong>Request ID:</strong> <code>@Model.RequestId</code>
+        </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>
--- a/ForumUserApp/Views/Shared/_Layout.cshtml
+++ b/ForumUserApp/Views/Shared/_Layout.cshtml
@ -0,0 +1,65 @@
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>@ViewData["Title"] - ForumUserApp</title>
+    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
+    <link rel="stylesheet" href="~/ForumUserApp.styles.css" asp-append-version="true" />
+</head>
+<body>
+    <header>
+        <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
+            <div class="container-fluid">
+               <a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">Форум</a>
+                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
+                        aria-expanded="false" aria-label="Toggle navigation">
+                    <span class="navbar-toggler-icon"></span>
+                </button>
+                <div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
+                    <ul class="navbar-nav flex-grow-1">
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Главная страница</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="CreateQuestion">Задать вопрос</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Личные данные</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Enter">Вход</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Register">Регистрация</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="UserQuestions">Мои вопросы</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="HardRequest">Выборка вопросов</a>
+                        </li>
+                    </ul>
+                </div>
+            </div>
+        </nav>
+    </header>
+    <div class="container">
+        <main role="main" class="pb-3">
+            @RenderBody()
+        </main>
+    </div>
+
+    <footer class="border-top footer text-muted">
+        <div class="container">
+            &copy; 2023 - ForumUserApp - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
+        </div>
+    </footer>
+    <script src="~/lib/jquery/dist/jquery.min.js"></script>
+    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="~/js/site.js" asp-append-version="true"></script>
+    @await RenderSectionAsync("Scripts", required: false)
+</body>
+</html>
--- a/ForumUserApp/Views/Shared/_Layout.cshtml.css
+++ b/ForumUserApp/Views/Shared/_Layout.cshtml.css
@ -0,0 +1,49 @@
+/* Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
+for details on configuring this project to bundle and minify static web assets. */
+
+a.navbar-brand {
+    white-space: normal;
+    text-align: center;
+    word-break: break-all;
+}
+
+a {
+    color: #0077cc;
+}
+
+.btn-primary {
+    color: #fff;
+    background-color: #1b6ec2;
+    border-color: #1861ac;
+}
+
+.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
+    color: #fff;
+    background-color: #1b6ec2;
+    border-color: #1861ac;
+}
+
+.border-top {
+    border-top: 1px solid #e5e5e5;
+}
+
+.border-bottom {
+    border-bottom: 1px solid #e5e5e5;
+}
+
+.box-shadow {
+    box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
+}
+
+button.accept-policy {
+    font-size: 1rem;
+    line-height: inherit;
+}
+
+.footer {
+    position: absolute;
+    bottom: 0;
+    width: 100%;
+    white-space: nowrap;
+    line-height: 60px;
+}
--- a/ForumUserApp/Views/Shared/_ValidationScriptsPartial.cshtml
+++ b/ForumUserApp/Views/Shared/_ValidationScriptsPartial.cshtml
@ -0,0 +1,2 @@
+<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
+<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>
--- a/ForumUserApp/Views/_ViewImports.cshtml
+++ b/ForumUserApp/Views/_ViewImports.cshtml
@ -0,0 +1,3 @@
+@using ForumUserApp
+@using ForumUserApp.Models
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
--- a/ForumUserApp/Views/_ViewStart.cshtml
+++ b/ForumUserApp/Views/_ViewStart.cshtml
@ -0,0 +1,3 @@
+@{
+    Layout = "_Layout";
+}
--- a/ForumUserApp/appsettings.Development.json
+++ b/ForumUserApp/appsettings.Development.json
@ -0,0 +1,9 @@
+{
+  "DetailedErrors": true,
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
--- a/ForumUserApp/appsettings.json
+++ b/ForumUserApp/appsettings.json
@ -0,0 +1,10 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "IPAddress": "http://localhost:5124/"
+}
--- a/ForumUserApp/wwwroot/css/site.css
+++ b/ForumUserApp/wwwroot/css/site.css
@ -0,0 +1,18 @@
+html {
+  font-size: 14px;
+}
+
+@media (min-width: 768px) {
+  html {
+    font-size: 16px;
+  }
+}
+
+html {
+  position: relative;
+  min-height: 100%;
+}
+
+body {
+  margin-bottom: 60px;
+}
--- a/ForumUserApp/wwwroot/favicon.ico
+++ b/ForumUserApp/wwwroot/favicon.ico
--- a/ForumUserApp/wwwroot/js/site.js
+++ b/ForumUserApp/wwwroot/js/site.js
@ -0,0 +1,4 @@
+// Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
+// for details on configuring this project to bundle and minify static web assets.
+
+// Write your JavaScript code.
--- a/ForumUserApp/wwwroot/lib/bootstrap/LICENSE
+++ b/ForumUserApp/wwwroot/lib/bootstrap/LICENSE
@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2011-2021 Twitter, Inc.
+Copyright (c) 2011-2021 The Bootstrap Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.css
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.css
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.css.map
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.css.map
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css.map
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css.map
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.rtl.css
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.rtl.css
--- a/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.rtl.css.map
+++ b/ForumUserApp/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.rtl.css.map
--- a/Show More
+++ b/Show More