using System.Security.Claims;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;

namespace Util.Tests.Middlewares; 

/// <summary>
/// 测试用户中间件
/// </summary>
public class TestUserMiddleware {
    /// <summary>
    /// 下个中间件
    /// </summary>
    private readonly RequestDelegate _next;

    /// <summary>
    /// 初始化测试用户中间件
    /// </summary>
    /// <param name="next">下个中间件</param>
    public TestUserMiddleware( RequestDelegate next ) {
        _next = next;
    }

    /// <summary>
    /// 执行中间件
    /// </summary>
    /// <param name="context">Http上下文</param>
    public async Task Invoke( HttpContext context ) {
        var userId = context.Request.Headers["user-id"].SafeString();
        if ( userId.IsEmpty() == false ) {
            var identity = new ClaimsIdentity( new[] { new Claim( "sub", userId ) } );
            context.User = new ClaimsPrincipal( identity );
        }
        await _next( context );
    }
}