using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Net;
using System.Text;
using System.Text.Encodings.Web;
using System.Threading.Tasks;

namespace Saxonite.Net.Core.Web.Base.Middleware
{
	//=======================================================================
	// Authentication handler required to allow actions to issue Forbid() responses.
	// Ref. https://stackoverflow.com/questions/54578426/why-do-i-need-to-set-a-defaultforbidscheme/54587054#54587054
	//=======================================================================
	public class SaxAuthenticationHandler : AuthenticationHandler<AuthenticationSchemeOptions>
	{
		//-------------------------------------------------------------------
		// Data members.

		//-------------------------------------------------------------------
		public SaxAuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock) :
		base(options, logger, encoder, clock)
		{
		}

		//-------------------------------------------------------------------
		protected override Task HandleForbiddenAsync(AuthenticationProperties properties)
		{
			Context.Response.StatusCode = (int)HttpStatusCode.Forbidden;
			return base.HandleForbiddenAsync(properties);
		}

		//-------------------------------------------------------------------
		protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
		{
			Context.Response.StatusCode = (int)HttpStatusCode.Unauthorized;
			return AuthenticateResult.NoResult();
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}