chore: 提交当前变更

src/Modules/TakeoutSaaS.Module.Tenancy/Extensions/TenantServiceCollectionExtensions.cs

@@ -0,0 +1,34 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Module.Tenancy.Extensions;
+
+/// <summary>
+/// 多租户服务注册及中间件扩展。
+/// </summary>
+public static class TenantServiceCollectionExtensions
+{
+    /// <summary>
+    /// 注册租户上下文、解析中间件及默认租户提供者。
+    /// </summary>
+    public static IServiceCollection AddTenantResolution(this IServiceCollection services, IConfiguration configuration)
+    {
+        services.TryAddSingleton<ITenantContextAccessor, TenantContextAccessor>();
+        services.TryAddScoped<ITenantProvider, TenantProvider>();
+
+        services.AddOptions<TenantResolutionOptions>()
+            .Bind(configuration.GetSection("Tenancy"))
+            .ValidateDataAnnotations();
+
+        return services;
+    }
+
+    /// <summary>
+    /// 使用多租户解析中间件。
+    /// </summary>
+    public static IApplicationBuilder UseTenantResolution(this IApplicationBuilder app)
+        => app.UseMiddleware<TenantResolutionMiddleware>();
+}