using System;
using System.Collections.Generic;
using System.IdentityModel.Selectors;
using System.Linq;
using System.Security.Principal;
using System.ServiceModel.Web;
using System.Web;
using Taloyhtio.GeneralApi.Common;
using WcfRestContrib.ServiceModel.Web.Exceptions;

namespace Taloyhtio.GeneralApi.WcfService
{
    public class CustomAuthenticationHandler : WcfRestContrib.ServiceModel.Dispatcher.IWebAuthenticationHandler
    {
        public IIdentity Authenticate(
            IncomingWebRequestContext request,
            OutgoingWebResponseContext response,
            object[] parameters,
            UserNamePasswordValidator validator,
            bool secure,
            bool requiresTransportLayerSecurity,
            string source)
        {
            if (requiresTransportLayerSecurity && !secure)
            {
                throw new BasicRequiresTransportSecurityException();
            }

            string username = request.Headers[Constants.HttpHeaders.Username];
            string password = request.Headers[Constants.HttpHeaders.Password];
            validator.Validate(username, password);
            return new GenericIdentity(username, "CustomAuthenticationHandler");
        }
    }
}