为asp.net-core 2中的每个角色实现不同的登录页

public class CustomAuthenticationHandler : AuthenticationHandler<AuthenticationSchemeOptions>
{
    public CustomAuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock)
        : base(options, logger, encoder, clock)
    {
    }

    protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
    {
        // 获取当前用户的角色信息
        var userRoles = Context.User.Claims.Where(c => c.Type == ClaimTypes.Role).Select(c => c.Value).ToList();

        // 根据角色选择不同的登录页
        string loginPath = "/login";
        if (userRoles.Contains("Admin"))
        {
            loginPath = "/admin-login";
        }
        else if (userRoles.Contains("User"))
        {
            loginPath = "/user-login";
        }

        // 执行身份验证
        var result = await Context.AuthenticateAsync();

        if (result.Succeeded)
        {
            return AuthenticateResult.Success(result.Ticket);
        }
        else if (result.Failure != null)
        {
            return AuthenticateResult.Fail(result.Failure);
        }
        else
        {
            return AuthenticateResult.Fail("Authentication failed.");
        }
    }
}

services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = "CustomScheme";
    options.DefaultChallengeScheme = "CustomScheme";
})
.AddScheme<AuthenticationSchemeOptions, CustomAuthenticationHandler>("CustomScheme", options => { });

[Authorize(Roles = "Admin")]
public class AdminController : Controller
{
    // ...
}

[Authorize(Roles = "User")]
public class UserController : Controller
{
    // ...
}