using System;
using System.Configuration;
using System.IO;
using System.Net;
using System.Text;
using System.Web;

namespace GetRoom {

    public class Room : IHttpHandler {

        protected HttpContext Context;

        public void ProcessRequest(HttpContext context) {
            Context = context;
            Context.Response.ContentType = "text/plain";

            // allow calling this by Ajax from another web site
            Context.Response.AddHeader("Access-Control-Allow-Origin", "*");
            string roomName = GetParameter("room");
            string url = "http://www.imvu.com/rooms/" + roomName;
            string allHTML;

            //TODO: Grab the roomId from the HTML, then use the following call
            // to the API: http://www.imvu.com/api/rooms/room_info.php?room_id=57622347-225
            //It returns a lot more data.

            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            if (request != null) {
                request.CookieContainer = new CookieContainer();
                Cookie cookie = new Cookie("osCsid", ConfigurationManager.AppSettings["osCsid"]) { Domain = "www.imvu.com" };
                request.CookieContainer.Add(cookie);
                request.UserAgent = ConfigurationManager.AppSettings["Room.UserAgent"];
                    //"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36";
                HttpWebResponse resp = request.GetResponse() as HttpWebResponse;
                if (resp != null) {
                    Stream receiveStream = resp.GetResponseStream();
                    if (receiveStream != null) {
                        Encoding encoding = Encoding.GetEncoding(1252);
                        StreamReader readStream = new StreamReader(receiveStream, encoding);
                        char[] read = new char[256];
                        int count = readStream.Read(read, 0, 256);
                        StringBuilder sb = new StringBuilder();
                        while (count > 0) {
                            sb.Append(new String(read, 0, count));
                            count = readStream.Read(read, 0, 256);
                        }
                        readStream.Close();
                        resp.Close();
                        allHTML = sb.ToString();
                    }
                    else {
                        Write(ErrorText);
                        return;
                    }
                }
                else {
                    Write(ErrorText);
                    return;
                }
            }
            else {
                Write(ErrorText);
                return;
            }

            StringReader sr = new StringReader(allHTML);
            StringBuilder sb2 = new StringBuilder();
            string line;
            bool inJS = false;
            while ((line = sr.ReadLine()) != null) {
                if (!inJS) {
                    if (line.StartsWith("var roomInfo = {")) {
                        inJS = true;
                        sb2.AppendLine("{");
                    }
                }
                else {
                    sb2.AppendLine(line);
                    if (line.Trim().StartsWith("}")) break;
                }
            }
            string result = sb2.ToString();
            Write(string.IsNullOrWhiteSpace(result) ? ErrorText : result.Replace('\'', '"'));
        }

        protected string ErrorText = @"{
    'roomId':'00000000-00',
    'owner':'No-one',
    'room_name':'Unknown Room',
    'desc':'No description',
    'max' : '0',
    'count' : '0',
    'img' : '',
    'dl_size' : 'n/a',
    'ap' : '0',
    'vip' : '0',
    'show_ap_name_only' : false,
    'whitelist_rating' : 0,
    'participants' : []
}".Replace('\'', '"');

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }

        protected virtual string GetParameter(string name) {
            if (Context != null) {
                return Context.Request[name];
            }
            throw new ArgumentException("Parameter named '" + name + "' was not passed.");
        }

        protected virtual void Write(string text) {
            if (Context != null) {
                Context.Response.Write(text);
            }
        }
    }
}