/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the OpenSimulator Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Collections;
using System.Reflection;
using log4net;
using Nini.Config;
using Mono.Addins;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;

namespace OpenSim.Region.ClientStack.Linden
{
    /// <summary>
    /// SimulatorFeatures capability. This is required for uploading Mesh.
    /// Since is accepts an open-ended response, we also send more information
    /// for viewers that care to interpret it.
    /// 
    /// NOTE: Part of this code was adapted from the Aurora project, specifically
    /// the normal part of the response in the capability handler.
    /// </summary>
    /// 
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
    public class SimulatorFeaturesModule : ISharedRegionModule
    {
        private static readonly ILog m_log =
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        private Scene m_scene;

        private string m_MapImageServerURL = string.Empty;
        private string m_SearchURL = string.Empty;

        #region ISharedRegionModule Members

        public void Initialise(IConfigSource source)
        {
            IConfig config = source.Configs["SimulatorFeatures"];
            if (config == null)
                return;

            m_MapImageServerURL = config.GetString("MapImageServerURI", string.Empty);
            if (m_MapImageServerURL != string.Empty)
            {
                m_MapImageServerURL = m_MapImageServerURL.Trim();
                if (!m_MapImageServerURL.EndsWith("/"))
                    m_MapImageServerURL = m_MapImageServerURL + "/";
            }

            m_SearchURL = config.GetString("SearchServerURI", string.Empty);
        }

        public void AddRegion(Scene s)
        {
            m_scene = s;
            m_scene.EventManager.OnRegisterCaps += RegisterCaps;
        }

        public void RemoveRegion(Scene s)
        {
            m_scene.EventManager.OnRegisterCaps -= RegisterCaps;
        }

        public void RegionLoaded(Scene s)
        {
        }

        public void PostInitialise()
        {
        }

        public void Close() { }

        public string Name { get { return "SimulatorFeaturesModule"; } }

        public Type ReplaceableInterface
        {
            get { return null; }
        }

        #endregion

        public void RegisterCaps(UUID agentID, Caps caps)
        {
            IRequestHandler reqHandler = new RestHTTPHandler("GET", "/CAPS/" + UUID.Random(), SimulatorFeatures);
            caps.RegisterHandler("SimulatorFeatures", reqHandler);
        }

        private Hashtable SimulatorFeatures(Hashtable mDhttpMethod)
        {
            m_log.DebugFormat("[SIMULATOR FEATURES MODULE]: SimulatorFeatures request");
            OSDMap data = new OSDMap();
            data["MeshRezEnabled"] = true;
            data["MeshUploadEnabled"] = true;
            data["MeshXferEnabled"] = true;
            data["PhysicsMaterialsEnabled"] = true;

            OSDMap typesMap = new OSDMap();
            typesMap["convex"] = true;
            typesMap["none"] = true;
            typesMap["prim"] = true;
            data["PhysicsShapeTypes"] = typesMap;

            // Extra information for viewers that want to use it
            OSDMap gridServicesMap = new OSDMap();
            if (m_MapImageServerURL != string.Empty)
                gridServicesMap["map-server-url"] = m_MapImageServerURL;
            if (m_SearchURL != string.Empty)
                gridServicesMap["search"] = m_SearchURL;
            data["GridServices"] = gridServicesMap;

            //Send back data
            Hashtable responsedata = new Hashtable();
            responsedata["int_response_code"] = 200; 
            responsedata["content_type"] = "text/plain";
            responsedata["keepalive"] = false;
            responsedata["str_response_string"] = OSDParser.SerializeLLSDXmlString(data);
            return responsedata;
        }

    }
}