/*
 * 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.Generic;
using System.Reflection;
using System.Text;
using log4net;
using Mono.Addins;
using Nini.Config;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Framework.Console;
using OpenSim.Framework.Statistics;
using OpenSim.Region.ClientStack.LindenUDP;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;

namespace OpenSim.Region.OptionalModules.Avatar.Appearance
{
    /// <summary>
    /// A module that just holds commands for inspecting avatar appearance.
    /// </summary>
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "AppearanceInfoModule")]
    public class AppearanceInfoModule : ISharedRegionModule
    {
//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public const string SHOW_APPEARANCE_FORMAT = "{0,-9}  {1}";

        private Dictionary<UUID, Scene> m_scenes = new Dictionary<UUID, Scene>();
        private IAvatarFactoryModule m_avatarFactory;
        
        public string Name { get { return "Appearance Information Module"; } }        
        
        public Type ReplaceableInterface { get { return null; } }
        
        public void Initialise(IConfigSource source)
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: INITIALIZED MODULE");
        }
        
        public void PostInitialise()
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: POST INITIALIZED MODULE");
        }
        
        public void Close()
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: CLOSED MODULE");
        }
        
        public void AddRegion(Scene scene)
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: REGION {0} ADDED", scene.RegionInfo.RegionName);                                     
        }
        
        public void RemoveRegion(Scene scene)
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: REGION {0} REMOVED", scene.RegionInfo.RegionName);
            
            lock (m_scenes)
                m_scenes.Remove(scene.RegionInfo.RegionID);
        }        
        
        public void RegionLoaded(Scene scene)
        {
//            m_log.DebugFormat("[APPEARANCE INFO MODULE]: REGION {0} LOADED", scene.RegionInfo.RegionName);
            
            lock (m_scenes)
                m_scenes[scene.RegionInfo.RegionID] = scene;

            scene.AddCommand(
                this, "show appearance",
                "show appearance [<first-name> <last-name>]",
                "Synonym for 'appearance show'",
                HandleShowAppearanceCommand);
            
            scene.AddCommand(
                this, "appearance show",
                "appearance show [<first-name> <last-name>]",
                "Show appearance information for each avatar in the simulator.",
                "This command checks whether the simulator has all the baked textures required to display an avatar to other viewers.  "
                    + "\nIf not, then appearance is 'corrupt' and other avatars will continue to see it as a cloud."
                    + "\nOptionally, you can view just a particular avatar's appearance information."
                    + "\nIn this case, the texture UUID for each bake type is also shown and whether the simulator can find the referenced texture.",
                HandleShowAppearanceCommand);

            scene.AddCommand(
                this, "appearance send",
                "appearance send [<first-name> <last-name>]",
                "Send appearance data for each avatar in the simulator to other viewers.",
                "Optionally, you can specify that only a particular avatar's appearance data is sent.",
                HandleSendAppearanceCommand);
        }

        private void HandleSendAppearanceCommand(string module, string[] cmd)
        {
            if (cmd.Length != 2 && cmd.Length < 4)
            {
                MainConsole.Instance.OutputFormat("Usage: appearance send [<first-name> <last-name>]");
                return;
            }

            bool targetNameSupplied = false;
            string optionalTargetFirstName = null;
            string optionalTargetLastName = null;

            if (cmd.Length >= 4)
            {
                targetNameSupplied = true;
                optionalTargetFirstName = cmd[2];
                optionalTargetLastName = cmd[3];
            }

            lock (m_scenes)
            {
                foreach (Scene scene in m_scenes.Values)
                {
                    if (targetNameSupplied)
                    {
                        ScenePresence sp = scene.GetScenePresence(optionalTargetFirstName, optionalTargetLastName);
                        if (sp != null && !sp.IsChildAgent)
                        {
                            MainConsole.Instance.OutputFormat(
                                "Sending appearance information for {0} to all other avatars in {1}",
                                sp.Name, scene.RegionInfo.RegionName);

                            scene.AvatarFactory.SendAppearance(sp.UUID);
                        }
                    }
                    else
                    {
                        scene.ForEachRootScenePresence(
                            sp =>
                            {
                                MainConsole.Instance.OutputFormat(
                                    "Sending appearance information for {0} to all other avatars in {1}",
                                    sp.Name, scene.RegionInfo.RegionName);

                                scene.AvatarFactory.SendAppearance(sp.UUID);
                            }
                        );
                    }
                }
            }
        }

        protected void HandleShowAppearanceCommand(string module, string[] cmd)
        {
            if (cmd.Length != 2 && cmd.Length < 4)
            {
                MainConsole.Instance.OutputFormat("Usage: appearance show [<first-name> <last-name>]");
                return;
            }

            bool targetNameSupplied = false;
            string optionalTargetFirstName = null;
            string optionalTargetLastName = null;

            if (cmd.Length >= 4)
            {
                targetNameSupplied = true;
                optionalTargetFirstName = cmd[2];
                optionalTargetLastName = cmd[3];
            }

            lock (m_scenes)
            {   
                foreach (Scene scene in m_scenes.Values)
                {
                    if (targetNameSupplied)
                    {
                        ScenePresence sp = scene.GetScenePresence(optionalTargetFirstName, optionalTargetLastName);
                        if (sp != null && !sp.IsChildAgent)
                        {
                            MainConsole.Instance.OutputFormat("For {0} in {1}", sp.Name, scene.RegionInfo.RegionName);
                            MainConsole.Instance.OutputFormat(SHOW_APPEARANCE_FORMAT, "Bake Type", "UUID");

                            Dictionary<BakeType, Primitive.TextureEntryFace> bakedTextures
                                = scene.AvatarFactory.GetBakedTextureFaces(sp.UUID);
                            foreach (BakeType bt in bakedTextures.Keys)
                            {
                                string rawTextureID;

                                if (bakedTextures[bt] == null)
                                {
                                    rawTextureID = "not set";
                                }
                                else
                                {
                                    rawTextureID = bakedTextures[bt].TextureID.ToString();

                                    if (scene.AssetService.Get(rawTextureID) == null)
                                        rawTextureID += " (not found)";
                                    else
                                        rawTextureID += " (uploaded)";
                                }

                                MainConsole.Instance.OutputFormat(SHOW_APPEARANCE_FORMAT, bt, rawTextureID);
                            }

                            bool bakedTextureValid = scene.AvatarFactory.ValidateBakedTextureCache(sp);
                            MainConsole.Instance.OutputFormat(
                                "{0} baked appearance texture is {1}", sp.Name, bakedTextureValid ? "OK" : "corrupt");
                        }
                    }
                    else
                    {
                        scene.ForEachRootScenePresence(
                            sp =>
                            {
                                bool bakedTextureValid = scene.AvatarFactory.ValidateBakedTextureCache(sp);
                                MainConsole.Instance.OutputFormat(
                                    "{0} baked appearance texture is {1}", sp.Name, bakedTextureValid ? "OK" : "corrupt");
                            }
                        );
                    }
                }
            }
        }      
    }
}