using System;
using System.Net;
using System.Web;

namespace UpsN
{
    public class UpsNOMOWAgent
    {
        public bool getDeviceAuth(string secretKey, string registeredUrl, string uniqueId, HttpRequestBase request)
        {
            string url = "https://www.mellow-fellows.com/OMOW/";
            System.Net.WebClient wc = new UpsNWebClient();
            System.Collections.Specialized.NameValueCollection ps =
                new System.Collections.Specialized.NameValueCollection();
            ps.Add("secretKey", secretKey);
            ps.Add("url", registeredUrl);
            ps.Add("uniqueId", uniqueId);
            ps.Add("remoteAddr", IPHelper.GetIPAddress(request));
            ps.Add("userAgent", request.UserAgent);
            byte[] resData = null;
            string resText = "";
            try
            {
                resData = wc.UploadValues(url, ps);
                resText = System.Text.Encoding.UTF8.GetString(resData);
            }
            catch (WebException e)
            {
                Console.WriteLine(e.Message);
                if (e.Status == WebExceptionStatus.ConnectFailure)
                {
                    resText = "SUCCESS";
                }
            }
            wc.Dispose();
            return ("SUCCESS" == resText);
        }
    }

    public class UpsNWebClient : WebClient
    {
        private int timeout = 60000;
        public int Timeout
        {
            get
            {
                return timeout;
            }
            set
            {
                timeout = value;
            }
        }
        protected override WebRequest GetWebRequest(Uri uri)
        {
            WebRequest w = base.GetWebRequest(uri);
            w.Timeout = timeout;
            return w;
        }
    }

    public class IPHelper
    {
        public static string GetIPAddress(HttpRequestBase request)
        {
            string HttpVia = request.ServerVariables["HTTP_VIA"];
            string HttpXForwardedFor = request.ServerVariables["HTTP_X_FORWARDED_FOR"];
            string RemoteAddr = request.ServerVariables["REMOTE_ADDR"];
            string result = "127.0.0.1";
            string tempIP = string.Empty;
            if (HttpVia != null)
            {
                tempIP = HttpXForwardedFor;
            }
            else
            {
                tempIP = RemoteAddr;
            }
            if (!IsIPV4(tempIP) || tempIP == "127.0.0.1 ")
            {
                try
                {
                    string hostName = System.Net.Dns.GetHostName();
                    foreach (IPAddress ip in Dns.GetHostAddresses(hostName))
                    {
                        if (IsIPV4(ip))
                        {
                            result = ip.ToString();
                            break;
                        }
                    }
                }
                catch { }
            }
            else
            {
                result = tempIP;
            }
            return result;
        }

        private static bool IsIPV4(string input)
        {
            bool result = false;
            IPAddress address = null;
            if (IPAddress.TryParse(input, out address))
            {
                result = IsIPV4(address);
            }
            return result;
        }

        private static bool IsIPV4(IPAddress address)
        {
            bool result = false;
            switch (address.AddressFamily)
            {
                case System.Net.Sockets.AddressFamily.InterNetwork:
                    result = true;
                    break;
                case System.Net.Sockets.AddressFamily.InterNetworkV6:
                    break;
                default:
                    break;
            }
            return result;
        }
    }

}