ln.http/ln.http/HttpContext.cs

using System;
using ln.http.exceptions;
using ln.http.router;

namespace ln.http
{
    public class HttpContext
    {
        public HttpServer HttpServer { get; }
        public HttpContext SourceContext { get; }
        public HttpException HttpException { get; }
        public HttpRequest Request { get; set; }
        public HttpResponse Response { get; set; }
        public HttpPrincipal AuthenticatedPrincipal { get; private set; }

        public HttpContext(HttpServer httpServer)
        {
            HttpServer = httpServer;
        }

        public HttpContext(HttpServer httpServer, HttpRequest httpRequest) : this(httpServer)
        {
            Request = httpRequest;
            RoutableUri = httpRequest.RequestUri.AbsolutePath;
        }

        public HttpContext(HttpContext sourceContext, HttpException httpException)
        {
            SourceContext = sourceContext;
            HttpException = httpException;
            
            HttpServer = sourceContext.HttpServer;
            RoutableUri = String.Format("/_err/{0:3}.html", (int)httpException.HttpStatusCode);
            AuthenticatedPrincipal = SourceContext.AuthenticatedPrincipal;
        }

        public string RoutableUri { get; set; }

        public bool Authenticate()
        {
            foreach (var authenticationSource in HttpServer.AuthenticationSources)
            {
                if (authenticationSource.AuthenticatePrincipal(this, out HttpPrincipal httpPrincipal))
                {
                    AuthenticatedPrincipal = httpPrincipal;
                    return true;
                }
            }
            return false;
        }
        public void DeAuthenticate() => AuthenticatedPrincipal = null;
    }
}