using log4net;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Web;

namespace JsonRx.Helper
{
    public static class HttpRequestMessageExtensions
    {
        private const string HttpContext = "MS_HttpContext";
        private const string RemoteEndpointMessage = "System.ServiceModel.Channels.RemoteEndpointMessageProperty";

        public static string GetClientIpAddress(this HttpRequestMessage request)
        {

            if (request == null)
                return string.Empty;

            if (request.Properties.ContainsKey(HttpContext))
            {
                dynamic ctx = request.Properties[HttpContext];
                if (ctx != null)
                {
                    return ctx.Request.UserHostAddress;
                }
            }

            if (request.Properties.ContainsKey(RemoteEndpointMessage))
            {
                dynamic remoteEndpoint = request.Properties[RemoteEndpointMessage];
                if (remoteEndpoint != null)
                {
                    return remoteEndpoint.Address;
                }
            }

            return null;
        }


        private static readonly ILog Log = LogManager.GetLogger(typeof(HttpRequestMessageExtensions));
        public static string GetJWTToken(this HttpRequestMessage request)
        {
            string jwt = string.Empty;
            try
            {

                var id = request.Headers.GetValues("Authorization").FirstOrDefault();

                return id.StartsWith("Bearer") ? id.Substring(7) : id;
            }
            catch(Exception ex)
            {
                Log.Error("INVALID_JWT_TOKEN", ex);
            }
            return jwt;
        }
    }
}