using Microsoft.AspNetCore.Mvc.ActionConstraints;
using Microsoft.AspNetCore.Mvc.ApiExplorer;
using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.DependencyInjection;
using Store.Users.Controllers;

internal static class UserRoutingChecks
{
    public static void Run()
    {
        // 经真实 MVC 模型构建流程验证约定，不只是检查特性或直接调用 Apply。
        var services = new ServiceCollection();
        services.AddLogging();
        services.AddControllers().AddApplicationPart(typeof(UserController).Assembly);
        using var provider = services.BuildServiceProvider();
        var actions = provider.GetRequiredService<IActionDescriptorCollectionProvider>().ActionDescriptors.Items
            .OfType<ControllerActionDescriptor>().Where(a => a.ControllerTypeInfo.AsType() == typeof(UserController)).ToArray();
        if (actions.Length != 19) throw new Exception("用户控制器操作发现数量错误");
        foreach (var action in actions)
        {
            var method = "POST";
            var constraint = action.ActionConstraints!.OfType<HttpMethodActionConstraint>().Single();
            var metadata = action.EndpointMetadata.OfType<IHttpMethodMetadata>().Single();
            if (!constraint.HttpMethods.SequenceEqual([method]) || !metadata.HttpMethods.SequenceEqual([method]))
                throw new Exception($"{action.ActionName} 的方法约束或端点元数据错误");
        }
        var descriptions = provider.GetRequiredService<IApiDescriptionGroupCollectionProvider>().ApiDescriptionGroups.Items
            .SelectMany(g => g.Items).Where(d => d.ActionDescriptor is ControllerActionDescriptor a
                && a.ControllerTypeInfo.AsType() == typeof(UserController)).ToArray();
        if (descriptions.Length != actions.Length || descriptions.Any(d => d.HttpMethod !=
            "POST"))
            throw new Exception("用户接口文档的 HTTP 方法错误");
        Console.WriteLine("PASS: User 统一 POST、路由约束、端点元数据和接口文档验证通过。");
    }
}