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 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
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 * modification, are permitted provided that the following conditions are met:
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 *       notice, this list of conditions and the following disclaimer.
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 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Reflection;
using System.Text;
using System.Xml;
using log4net;
using Nwc.XmlRpc;
using OpenMetaverse;
using OpenSim.Framework;

namespace OpenSim.Region.CoreModules.Avatar.UserProfiles
{
    /// <summary>
    /// A client for accessing a profile server using the OpenProfile protocol.
    /// </summary>
    /// <remarks>
    /// This class was adapted from the full OpenProfile class. Since it's only a client, and not a server,
    /// it's much simpler.
    /// </remarks>
    public class OpenProfileClient
    {
        static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        
        private string m_serverURI;

        /// <summary>
        /// Creates a client for accessing a foreign grid's profile server using the OpenProfile protocol.
        /// </summary>
        /// <param name="serverURI">The grid's profile server URL</param>
        public OpenProfileClient(string serverURI)
        {
            m_serverURI = serverURI;
        }


        /// <summary>
        /// Gets an avatar's profile using the OpenProfile protocol.
        /// </summary>
        /// <param name="props">On success, this will contain the avatar's profile</param>
        /// <returns>Success/failure</returns>
        /// <remarks>
        /// There are two profile modules currently in use in OpenSim: the older one is OpenProfile, and the newer
        /// one is UserProfileModule (this file). This method attempts to read an avatar's profile from a foreign
        /// grid using the OpenProfile protocol.
        /// </remarks>
        public bool RequestAvatarPropertiesUsingOpenProfile(ref UserProfileProperties props)
        {
            Hashtable ReqHash = new Hashtable();
            ReqHash["avatar_id"] = props.UserId.ToString();

            Hashtable profileData = GenericXMLRPCRequest(ReqHash, "avatar_properties_request", m_serverURI);

            ArrayList dataArray = (ArrayList)profileData["data"];

            if (dataArray == null || dataArray[0] == null)
                return false;
            profileData = (Hashtable)dataArray[0];

            props.WebUrl = string.Empty;
            props.AboutText = String.Empty;
            props.FirstLifeText = String.Empty;
            props.ImageId = UUID.Zero;
            props.FirstLifeImageId = UUID.Zero;
            props.PartnerId = UUID.Zero;

            if (profileData["ProfileUrl"] != null)
                props.WebUrl = profileData["ProfileUrl"].ToString();
            if (profileData["AboutText"] != null)
                props.AboutText = profileData["AboutText"].ToString();
            if (profileData["FirstLifeAboutText"] != null)
                props.FirstLifeText = profileData["FirstLifeAboutText"].ToString();
            if (profileData["Image"] != null)
                props.ImageId = new UUID(profileData["Image"].ToString());
            if (profileData["FirstLifeImage"] != null)
                props.FirstLifeImageId = new UUID(profileData["FirstLifeImage"].ToString());
            if (profileData["Partner"] != null)
                props.PartnerId = new UUID(profileData["Partner"].ToString());

            props.WantToMask = 0;
            props.WantToText = String.Empty;
            props.SkillsMask = 0;
            props.SkillsText = String.Empty;
            props.Language = String.Empty;

            if (profileData["wantmask"] != null)
                props.WantToMask = Convert.ToInt32(profileData["wantmask"].ToString());
            if (profileData["wanttext"] != null)
                props.WantToText = profileData["wanttext"].ToString();

            if (profileData["skillsmask"] != null)
                props.SkillsMask = Convert.ToInt32(profileData["skillsmask"].ToString());
            if (profileData["skillstext"] != null)
                props.SkillsText = profileData["skillstext"].ToString();

            if (profileData["languages"] != null)
                props.Language = profileData["languages"].ToString();

            return true;
        }

        private Hashtable GenericXMLRPCRequest(Hashtable ReqParams, string method, string server)
        {
            ArrayList SendParams = new ArrayList();
            SendParams.Add(ReqParams);

            XmlRpcResponse Resp;
            try
            {
                XmlRpcRequest Req = new XmlRpcRequest(method, SendParams);
                Resp = Req.Send(server, 30000);
            }
            catch (WebException ex)
            {
                m_log.ErrorFormat("[PROFILE]: Unable to connect to Profile " +
                        "Server {0}.  Exception {1}", server, ex);

                Hashtable ErrorHash = new Hashtable();
                ErrorHash["success"] = false;
                ErrorHash["errorMessage"] = "Unable to fetch profile data at this time. ";
                ErrorHash["errorURI"] = "";

                return ErrorHash;
            }
            catch (SocketException ex)
            {
                m_log.ErrorFormat(
                        "[PROFILE]: Unable to connect to Profile Server {0}. Method {1}, params {2}. " +
                        "Exception {3}", server, method, ReqParams, ex);

                Hashtable ErrorHash = new Hashtable();
                ErrorHash["success"] = false;
                ErrorHash["errorMessage"] = "Unable to fetch profile data at this time. ";
                ErrorHash["errorURI"] = "";

                return ErrorHash;
            }
            catch (XmlException ex)
            {
                m_log.ErrorFormat(
                        "[PROFILE]: Unable to connect to Profile Server {0}. Method {1}, params {2}. " +
                        "Exception {3}", server, method, ReqParams.ToString(), ex);
                Hashtable ErrorHash = new Hashtable();
                ErrorHash["success"] = false;
                ErrorHash["errorMessage"] = "Unable to fetch profile data at this time. ";
                ErrorHash["errorURI"] = "";

                return ErrorHash;
            }
            if (Resp.IsFault)
            {
                Hashtable ErrorHash = new Hashtable();
                ErrorHash["success"] = false;
                ErrorHash["errorMessage"] = "Unable to fetch profile data at this time. ";
                ErrorHash["errorURI"] = "";
                return ErrorHash;
            }
            Hashtable RespData = (Hashtable)Resp.Value;

            return RespData;
        }
    }
}