add: WebApplication控制服务

YaeBlog.Core/Builder/BlogApplicationOptions.cs

@@ -2,5 +2,5 @@
 
 public class BlogApplicationOptions
 {
-    public string[]? Args { get; init; }
+    public required string[] Args { get; init; }
 }

YaeBlog.Core/Components/_Imports.razor

@@ -0,0 +1,8 @@
+@using System.Net.Http
+@using System.Net.Http.Json
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using static Microsoft.AspNetCore.Components.Web.RenderMode
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.JSInterop

YaeBlog.Core/Extensions/BlogApplicationExtension.cs

@@ -1,4 +1,5 @@
 using Markdig;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using YaeBlog.Core.Builder;
@@ -11,7 +12,7 @@ namespace YaeBlog.Core.Extensions;
 
 internal static class BlogApplicationExtension
 {
-    public static BlogApplicationBuilder ConfigureBlogApplication(this BlogApplicationBuilder builder)
+    public static void ConfigureBlogApplication(this BlogApplicationBuilder builder)
     {
         builder.Configuration.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
         builder.Configuration.AddJsonFile($"appsettings.{builder.Environment.EnvironmentName}.json",
@@ -33,7 +34,14 @@ internal static class BlogApplicationExtension
         builder.Services.AddSingleton<EssayScanService>();
         builder.Services.AddSingleton<RendererService>();
         builder.Services.AddSingleton<EssayContentService>();
+    }
 
-        return builder;
+    public static void ConfigureWebApplication(this BlogApplicationBuilder builder,
+        Action<WebApplicationBuilder> configureWebApplicationBuilder,
+        Action<WebApplication> configureWebApplication)
+    {
+        builder.Services.AddHostedService<WebApplicationHostedService>(provider =>
+            new WebApplicationHostedService(configureWebApplicationBuilder,
+            configureWebApplication, provider));
     }
 }

YaeBlog.Core/Services/WebApplicationHostedService.cs

@@ -0,0 +1,100 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace YaeBlog.Core.Services;
+
+public class WebApplicationHostedService : IHostedService
+{
+    private readonly WebApplicationBuilder _websiteBuilder = WebApplication.CreateBuilder();
+
+    private readonly Action<WebApplication> _configureWebApplication;
+
+    private Website? _currentWebsite;
+
+    public WebApplicationHostedService(Action<WebApplicationBuilder> configureWebApplicationBuilder,
+        Action<WebApplication> configureWebApplication,
+        IServiceProvider hostServiceProvider)
+    {
+        _configureWebApplication = configureWebApplication;
+        configureWebApplicationBuilder(_websiteBuilder);
+        AddHostServices(hostServiceProvider);
+    }
+
+    public async Task BuildWebsite()
+    {
+        if (_currentWebsite is not null)
+        {
+            await _currentWebsite.ShutdownAsync(new CancellationToken());
+        }
+
+        WebApplication application = _websiteBuilder.Build();
+        _configureWebApplication(application);
+        IHostLifetime websiteLifetime = application.Services.GetRequiredService<IHostLifetime>();
+        _currentWebsite = new Website(application, websiteLifetime);
+    }
+
+    public Task RunAsync()
+    {
+        if (_currentWebsite is not null)
+        {
+            return _currentWebsite.RunAsync();
+        }
+
+        throw new InvalidOperationException("Website has not been built.");
+    }
+
+    public Task ShutdownAsync()
+    {
+        if (_currentWebsite is { Running: true })
+        {
+            return _currentWebsite.ShutdownAsync(new CancellationToken());
+        }
+
+        throw new InvalidOperationException("Website is not running.");
+    }
+
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        await BuildWebsite();
+        _ = RunAsync();
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        if (_currentWebsite is { Running: true })
+        {
+            return _currentWebsite.ShutdownAsync(cancellationToken);
+        }
+
+        return Task.CompletedTask;
+    }
+
+    private void AddHostServices(IServiceProvider provider)
+    {
+        _websiteBuilder.Services.AddSingleton<EssayContentService>(_ =>
+            provider.GetRequiredService<EssayContentService>());
+    }
+
+
+    private class Website(WebApplication application, IHostLifetime websiteLifetime)
+    {
+        public bool Running { get; private set; }
+
+        public Task RunAsync()
+        {
+            Running = true;
+            return application.RunAsync();
+        }
+
+        public async Task ShutdownAsync(CancellationToken cancellationToken)
+        {
+            if (!Running)
+            {
+                await websiteLifetime.StopAsync(cancellationToken);
+            }
+
+            Running = false;
+        }
+    }
+}

YaeBlog.Core/YaeBlog.Core.csproj

@@ -11,6 +11,10 @@
     <SupportedPlatform Include="browser" />
   </ItemGroup>
   
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Markdig" Version="0.34.0" />
     <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="8.0.0" />

YaeBlog.Core/_Imports.razor

@@ -1 +0,0 @@
-@using Microsoft.AspNetCore.Components.Web