Initial commit

.vs/CommandHandler/v17/DocumentLayout.json

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+}

CommandHandler.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.35122.118
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CommandHandler", "CommandHandler\CommandHandler.csproj", "{065989A4-DB65-4A02-AED7-A831E92C3429}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{065989A4-DB65-4A02-AED7-A831E92C3429}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{065989A4-DB65-4A02-AED7-A831E92C3429}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{065989A4-DB65-4A02-AED7-A831E92C3429}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{065989A4-DB65-4A02-AED7-A831E92C3429}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A3F21B54-7B86-4635-8112-5996A510F1D5}
+	EndGlobalSection
+EndGlobal

CommandHandler/ApplicationContext.cs

@@ -0,0 +1,6 @@
+namespace CommandHandler;
+
+internal static class ApplicationContext
+{
+    public static bool IsRan { get; set; } = true;
+}

CommandHandler/CommandHandler.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

CommandHandler/Commands/ChangeNavigationStateCommand.cs

@@ -0,0 +1,13 @@
+
+using CommandHandler.Navigation;
+
+namespace CommandHandler.Commands;
+
+internal class ChangeNavigationStateCommand(INavigationContext context, INavigationState state) : ICommand
+{
+    public Task Execute()
+    {
+        context.SetState(state);
+        return Task.CompletedTask;
+    }
+}

CommandHandler/Commands/CombinedCommand.cs

@@ -0,0 +1,12 @@
+namespace CommandHandler.Commands;
+
+internal class CombinedCommand(params ICommand[] commands) : ICommand
+{
+    public async Task Execute()
+    {
+        foreach (var command in commands)
+        {
+            await command.Execute();
+        }
+    }
+}

CommandHandler/Commands/DrawMenuCommand.cs

@@ -0,0 +1,12 @@
+using CommandHandler.Navigation;
+
+namespace CommandHandler.Commands;
+
+internal class DrawMenuCommand(INavigationDrawer navigationDrawer) : ICommand
+{
+    public Task Execute()
+    {
+        Console.Write(navigationDrawer.DrawNavigationMenu());
+        return Task.CompletedTask;
+    }
+}

CommandHandler/Commands/EmptyCommand.cs

@@ -0,0 +1,9 @@
+namespace CommandHandler.Commands;
+
+internal class EmptyCommand : ICommand
+{
+    public Task Execute()
+    {
+        return Task.CompletedTask;
+    }
+}

CommandHandler/Commands/ExitCommand.cs

@@ -0,0 +1,10 @@
+namespace CommandHandler.Commands;
+
+internal class ExitCommand : ICommand
+{
+    public Task Execute()
+    {
+        ApplicationContext.IsRan = false;
+        return Task.CompletedTask;
+    }
+}

CommandHandler/Commands/ICommand.cs

@@ -0,0 +1,6 @@
+namespace CommandHandler.Commands;
+
+internal interface ICommand
+{
+    Task Execute();
+}

CommandHandler/Navigation/INavigationContext.cs

@@ -0,0 +1,9 @@
+using CommandHandler.Commands;
+
+namespace CommandHandler.Navigation;
+
+internal interface INavigationContext
+{
+    void SetState(INavigationState navigationState);
+    ICommand GetCommand(string message);
+}

CommandHandler/Navigation/INavigationDrawer.cs

@@ -0,0 +1,6 @@
+namespace CommandHandler.Navigation;
+
+internal interface INavigationDrawer
+{
+    string DrawNavigationMenu();
+}

CommandHandler/Navigation/INavigationState.cs

@@ -0,0 +1,9 @@
+using CommandHandler.Commands;
+
+namespace CommandHandler.Navigation;
+
+internal interface INavigationState
+{
+    void SetContext(INavigationContext context);
+    ICommand GetCommand(string message);
+}

CommandHandler/Navigation/States/NavigationMainState.cs

@@ -0,0 +1,12 @@
+using CommandHandler.Commands;
+
+namespace CommandHandler.Navigation.States;
+
+internal class NavigationMainState : NavigationStateBase, INavigationDrawer
+{
+    public NavigationMainState()
+    {
+        Commands.Add("/some", () => ChangeNavigationState(new NavigationSomeState()));
+        Commands.Add("/exit", () => new ExitCommand());
+    }
+}

CommandHandler/Navigation/States/NavigationSomeState.cs

@@ -0,0 +1,9 @@
+namespace CommandHandler.Navigation.States;
+
+internal class NavigationSomeState : NavigationStateBase, INavigationDrawer
+{
+    public NavigationSomeState()
+    {
+        Commands.Add("/back", () => ChangeNavigationState(new NavigationMainState()));
+    }
+}

CommandHandler/Navigation/States/NavigationStateBase.cs

@@ -0,0 +1,69 @@
+using System.Text;
+using CommandHandler.Commands;
+
+namespace CommandHandler.Navigation.States;
+
+internal abstract class NavigationStateBase : INavigationState, INavigationDrawer
+{
+    private INavigationContext? _context;
+
+    protected readonly IDictionary<string, Func<ICommand>> Commands = new Dictionary<string, Func<ICommand>>();
+
+    protected ICommand ChangeNavigationState(INavigationState  newState)
+    {
+        if (_context == null)
+        {
+            throw new InvalidOperationException();
+        }
+
+        var commands = new List<ICommand>
+        {
+            new ChangeNavigationStateCommand(_context, newState)
+        };
+
+        if (newState is INavigationDrawer drawer)
+        {
+            commands.Add(new DrawMenuCommand(drawer));
+        }
+
+        return new CombinedCommand([.. commands]);
+    }
+
+    public void SetContext(INavigationContext context)
+    {
+        _context = context;
+    }
+
+    public ICommand GetCommand(string message)
+    {
+        var parts = message.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+        if (parts.Length <= 0)
+        {
+            return new EmptyCommand();
+        }
+
+        if (Commands.TryGetValue(parts[0], out var commandFactory))
+        {
+            return commandFactory();
+        }
+
+        if (this is INavigationDrawer navigationDrawer)
+        {
+            return new DrawMenuCommand(navigationDrawer);
+        }
+
+        throw new NotImplementedException();
+    }
+
+    public string DrawNavigationMenu()
+    {
+        var builder = new StringBuilder();
+
+        foreach (var command in Commands.Keys)
+        {
+            builder.AppendLine(command);
+        }
+
+        return builder.ToString();
+    }
+}

CommandHandler/NavigationContext.cs

@@ -0,0 +1,25 @@
+using CommandHandler.Commands;
+using CommandHandler.Navigation;
+
+namespace CommandHandler;
+
+internal class NavigationContext : INavigationContext
+{
+    private INavigationState? _navigationState = null;
+
+    public void SetState(INavigationState navigationState)
+    {
+        _navigationState = navigationState;
+        _navigationState.SetContext(this);
+    }
+
+    public ICommand GetCommand(string message)
+    {
+        if (_navigationState == null)
+        {
+            throw new InvalidOperationException();
+        }
+
+        return _navigationState.GetCommand(message);
+    }
+}

CommandHandler/Program.cs

@@ -0,0 +1,25 @@
+using CommandHandler;
+using CommandHandler.Navigation;
+using CommandHandler.Navigation.States;
+
+Console.WriteLine("Hello, World!");
+
+INavigationContext context = new NavigationContext();
+context.SetState(new NavigationMainState());
+
+while (ApplicationContext.IsRan)
+{
+    try
+    {
+        var line = Console.ReadLine();
+        if (!string.IsNullOrEmpty(line))
+        {
+            var command = context.GetCommand(line);
+            await command.Execute();
+        }
+    }
+    catch (Exception ex)
+    {
+        Console.WriteLine(ex.ToString());
+    }
+}

CommandHandler/bin/Debug/net8.0/CommandHandler.deps.json

@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v8.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v8.0": {
+      "CommandHandler/1.0.0": {
+        "runtime": {
+          "CommandHandler.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "CommandHandler/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

CommandHandler/bin/Debug/net8.0/CommandHandler.runtimeconfig.json

@@ -0,0 +1,12 @@
+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "8.0.0"
+    },
+    "configProperties": {
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}

CommandHandler/obj/CommandHandler.csproj.nuget.dgspec.json

@@ -0,0 +1,73 @@
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+          "warn": true,
+          "frameworkReferences": {
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CommandHandler/obj/CommandHandler.csproj.nuget.g.props

@@ -0,0 +1,16 @@
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+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">$(UserProfile)\.nuget\packages\</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\Local\.nuget\packages\;C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.10.2</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="C:\Users\Local\.nuget\packages\" />
+    <SourceRoot Include="C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages\" />
+  </ItemGroup>
+</Project>

CommandHandler/obj/CommandHandler.csproj.nuget.g.targets

@@ -0,0 +1,2 @@
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+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />

CommandHandler/obj/Debug/net8.0/.NETCoreApp,Version=v8.0.AssemblyAttributes.cs

@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v8.0", FrameworkDisplayName = ".NET 8.0")]

CommandHandler/obj/Debug/net8.0/CommandHandler.AssemblyInfo.cs

@@ -0,0 +1,23 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Этот код создан программой.
+//     Исполняемая версия:4.0.30319.42000
+//
+//     Изменения в этом файле могут привести к неправильной работе и будут потеряны в случае
+//     повторной генерации кода.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("CommandHandler")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("CommandHandler")]
+[assembly: System.Reflection.AssemblyTitleAttribute("CommandHandler")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Создано классом WriteCodeFragment MSBuild.
+

CommandHandler/obj/Debug/net8.0/CommandHandler.AssemblyInfoInputs.cache

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CommandHandler/obj/Debug/net8.0/CommandHandler.GeneratedMSBuildEditorConfig.editorconfig

@@ -0,0 +1,13 @@
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+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property.EnforceExtendedAnalyzerRules = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = CommandHandler
+build_property.ProjectDir = D:\_pet\CommandHandler\CommandHandler\
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 

CommandHandler/obj/Debug/net8.0/CommandHandler.GlobalUsings.g.cs

@@ -0,0 +1,8 @@
+// <auto-generated/>
+global using global::System;
+global using global::System.Collections.Generic;
+global using global::System.IO;
+global using global::System.Linq;
+global using global::System.Net.Http;
+global using global::System.Threading;
+global using global::System.Threading.Tasks;

CommandHandler/obj/Debug/net8.0/CommandHandler.csproj.CoreCompileInputs.cache

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CommandHandler/obj/Debug/net8.0/CommandHandler.csproj.FileListAbsolute.txt

@@ -0,0 +1,14 @@
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+D:\_pet\CommandHandler\CommandHandler\bin\Debug\net8.0\CommandHandler.deps.json
+D:\_pet\CommandHandler\CommandHandler\bin\Debug\net8.0\CommandHandler.runtimeconfig.json
+D:\_pet\CommandHandler\CommandHandler\bin\Debug\net8.0\CommandHandler.dll
+D:\_pet\CommandHandler\CommandHandler\bin\Debug\net8.0\CommandHandler.pdb
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.GeneratedMSBuildEditorConfig.editorconfig
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.AssemblyInfoInputs.cache
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.AssemblyInfo.cs
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.csproj.CoreCompileInputs.cache
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.dll
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\refint\CommandHandler.dll
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.pdb
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\CommandHandler.genruntimeconfig.cache
+D:\_pet\CommandHandler\CommandHandler\obj\Debug\net8.0\ref\CommandHandler.dll

CommandHandler/obj/Debug/net8.0/CommandHandler.genruntimeconfig.cache

@@ -0,0 +1 @@
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CommandHandler/obj/project.assets.json

@@ -0,0 +1,79 @@
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CommandHandler/obj/project.nuget.cache

@@ -0,0 +1,8 @@
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