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+/*
+ * 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.Collections.Generic;
+using System.Reflection;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
+using OpenSim.Data;
+using OpenSim.Framework;
+using OpenSim.Services.Interfaces;
+
+namespace OpenSim.Services.InventoryService
+{
+    /// <summary>
+    /// The Inventory service reference implementation
+    /// </summary>
+    public class InventoryService : InventoryServiceBase, IInventoryService
+    {
+        private static readonly ILog m_log
+            = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        public InventoryService(IConfigSource config) : base(config)
+        {
+        }
+
+        #region IInventoryServices methods
+
+        public string Host
+        {
+            get { return "default"; }
+        }
+
+        public List<InventoryFolderBase> GetInventorySkeleton(UUID userId)
+        {
+//            m_log.DebugFormat("[AGENT INVENTORY]: Getting inventory skeleton for {0}", userId);
+
+            InventoryFolderBase rootFolder = RequestRootFolder(userId);
+
+            // Agent has no inventory structure yet.
+            if (null == rootFolder)
+            {
+                return null;
+            }
+
+            List<InventoryFolderBase> userFolders = new List<InventoryFolderBase>();
+
+            userFolders.Add(rootFolder);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                IList<InventoryFolderBase> folders = plugin.getFolderHierarchy(rootFolder.ID);
+                userFolders.AddRange(folders);
+            }
+
+//            foreach (InventoryFolderBase folder in userFolders)
+//            {
+//                m_log.DebugFormat("[AGENT INVENTORY]: Got folder {0} {1}", folder.name, folder.folderID);
+//            }
+
+            return userFolders;
+        }
+
+        // See IInventoryServices
+        public virtual bool HasInventoryForUser(UUID userID)
+        {
+            return false;
+        }
+
+        // See IInventoryServices
+        public virtual InventoryFolderBase RequestRootFolder(UUID userID)
+        {
+            // Retrieve the first root folder we get from the list of plugins.
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                InventoryFolderBase rootFolder = plugin.getUserRootFolder(userID);
+                if (rootFolder != null)
+                    return rootFolder;
+            }
+
+            // Return nothing if no plugin was able to supply a root folder
+            return null;
+        }
+
+        // See IInventoryServices
+        public bool CreateNewUserInventory(UUID user)
+        {
+            InventoryFolderBase existingRootFolder = RequestRootFolder(user);
+
+            if (null != existingRootFolder)
+            {
+                m_log.WarnFormat(
+                    "[AGENT INVENTORY]: Did not create a new inventory for user {0} since they already have "
+                    + "a root inventory folder with id {1}",
+                    user, existingRootFolder.ID);
+            }
+            else
+            {
+                UsersInventory inven = new UsersInventory();
+                inven.CreateNewInventorySet(user);
+                AddNewInventorySet(inven);
+
+                return true;
+            }
+
+            return false;
+        }
+
+        // See IInventoryServices
+        public void GetUserInventory(UUID userID, InventoryReceiptCallback callback)
+        {
+            m_log.InfoFormat("[LOCAL INVENTORY SERVICE]: Requesting inventory for user {0}", userID);
+
+            List<InventoryFolderImpl> folders = new List<InventoryFolderImpl>();
+            List<InventoryItemBase> items = new List<InventoryItemBase>();
+
+            List<InventoryFolderBase> skeletonFolders = GetInventorySkeleton(userID);
+
+            if (skeletonFolders != null)
+            {
+
+                InventoryFolderImpl rootFolder = null;
+
+                // Need to retrieve the root folder on the first pass
+                foreach (InventoryFolderBase folder in skeletonFolders)
+                {
+                    if (folder.ParentID == UUID.Zero)
+                    {
+                        rootFolder = new InventoryFolderImpl(folder);
+                        folders.Add(rootFolder);
+                        items.AddRange(RequestFolderItems(rootFolder.ID));
+                        break; // Only 1 root folder per user
+                    }
+                }
+
+                if (rootFolder != null)
+                {
+                    foreach (InventoryFolderBase folder in skeletonFolders)
+                    {
+                        if (folder.ID != rootFolder.ID)
+                        {
+                            folders.Add(new InventoryFolderImpl(folder));
+                            items.AddRange(RequestFolderItems(folder.ID));
+                        }
+                    }
+                }
+
+                m_log.InfoFormat(
+                    "[LOCAL INVENTORY SERVICE]: Received inventory response for user {0} containing {1} folders and {2} items",
+                    userID, folders.Count, items.Count);
+            }
+            else
+            {
+                m_log.WarnFormat("[LOCAL INVENTORY SERVICE]: User {0} inventory not available", userID);
+            }
+
+            callback(folders, items);
+        }
+
+        public List<InventoryItemBase> GetActiveGestures(UUID userId)
+        {
+            List<InventoryItemBase> activeGestures = new List<InventoryItemBase>();
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                activeGestures.AddRange(plugin.fetchActiveGestures(userId));
+            }
+            
+            return activeGestures;
+        }
+
+        #endregion
+
+        #region Methods used by GridInventoryService
+
+        public List<InventoryFolderBase> RequestSubFolders(UUID parentFolderID)
+        {
+            List<InventoryFolderBase> inventoryList = new List<InventoryFolderBase>();
+            
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                inventoryList.AddRange(plugin.getInventoryFolders(parentFolderID));
+            }
+            
+            return inventoryList;
+        }
+
+        public List<InventoryItemBase> RequestFolderItems(UUID folderID)
+        {
+            List<InventoryItemBase> itemsList = new List<InventoryItemBase>();
+            
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                itemsList.AddRange(plugin.getInventoryInFolder(folderID));
+            }
+            
+            return itemsList;
+        }
+
+        #endregion
+
+        // See IInventoryServices
+        public virtual bool AddFolder(InventoryFolderBase folder)
+        {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Adding folder {0} {1} to folder {2}", folder.Name, folder.ID, folder.ParentID);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.addInventoryFolder(folder);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        // See IInventoryServices
+        public virtual bool UpdateFolder(InventoryFolderBase folder)
+        {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Updating folder {0} {1} to folder {2}", folder.Name, folder.ID, folder.ParentID);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.updateInventoryFolder(folder);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        // See IInventoryServices
+        public virtual bool MoveFolder(InventoryFolderBase folder)
+        {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Moving folder {0} {1} to folder {2}", folder.Name, folder.ID, folder.ParentID);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.moveInventoryFolder(folder);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        // See IInventoryServices
+        public virtual bool AddItem(InventoryItemBase item)
+        {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Adding item {0} {1} to folder {2}", item.Name, item.ID, item.Folder);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.addInventoryItem(item);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        // See IInventoryServices
+        public virtual bool UpdateItem(InventoryItemBase item)
+        {
+            m_log.InfoFormat(
+                "[AGENT INVENTORY]: Updating item {0} {1} in folder {2}", item.Name, item.ID, item.Folder);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.updateInventoryItem(item);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        // See IInventoryServices
+        public virtual bool DeleteItem(InventoryItemBase item)
+        {
+            m_log.InfoFormat(
+                "[AGENT INVENTORY]: Deleting item {0} {1} from folder {2}", item.Name, item.ID, item.Folder);
+
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                plugin.deleteInventoryItem(item.ID);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        public virtual InventoryItemBase QueryItem(InventoryItemBase item)
+        {
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                InventoryItemBase result = plugin.queryInventoryItem(item.ID);
+                if (result != null)
+                    return result;
+            }
+
+            return null;
+        }
+
+        public virtual InventoryFolderBase QueryFolder(InventoryFolderBase item)
+        {
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                InventoryFolderBase result = plugin.queryInventoryFolder(item.ID);
+                if (result != null)
+                    return result;
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Purge a folder of all items items and subfolders.
+        ///
+        /// FIXME: Really nasty in a sense, because we have to query the database to get information we may
+        /// already know...  Needs heavy refactoring.
+        /// </summary>
+        /// <param name="folder"></param>
+        public virtual bool PurgeFolder(InventoryFolderBase folder)
+        {
+            m_log.DebugFormat(
+                "[AGENT INVENTORY]: Purging folder {0} {1} of its contents", folder.Name, folder.ID);
+
+            List<InventoryFolderBase> subFolders = RequestSubFolders(folder.ID);
+
+            foreach (InventoryFolderBase subFolder in subFolders)
+            {
+//                m_log.DebugFormat("[AGENT INVENTORY]: Deleting folder {0} {1}", subFolder.Name, subFolder.ID);
+
+                foreach (IInventoryDataPlugin plugin in m_plugins)
+                {
+                    plugin.deleteInventoryFolder(subFolder.ID);
+                }
+            }
+
+            List<InventoryItemBase> items = RequestFolderItems(folder.ID);
+
+            foreach (InventoryItemBase item in items)
+            {
+                DeleteItem(item);
+            }
+
+            // FIXME: Should return false on failure
+            return true;
+        }
+
+        private void AddNewInventorySet(UsersInventory inventory)
+        {
+            foreach (InventoryFolderBase folder in inventory.Folders.Values)
+            {
+                AddFolder(folder);
+            }
+        }
+
+        public InventoryItemBase GetInventoryItem(UUID itemID)
+        {
+            foreach (IInventoryDataPlugin plugin in m_plugins)
+            {
+                InventoryItemBase item = plugin.getInventoryItem(itemID);
+                if (item != null)
+                    return item;
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Used to create a new user inventory.
+        /// </summary>
+        private class UsersInventory
+        {
+            public Dictionary<UUID, InventoryFolderBase> Folders = new Dictionary<UUID, InventoryFolderBase>();
+            public Dictionary<UUID, InventoryItemBase> Items = new Dictionary<UUID, InventoryItemBase>();
+
+            public virtual void CreateNewInventorySet(UUID user)
+            {
+                InventoryFolderBase folder = new InventoryFolderBase();
+
+                folder.ParentID = UUID.Zero;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "My Inventory";
+                folder.Type = (short)AssetType.Folder;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                UUID rootFolder = folder.ID;
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Animations";
+                folder.Type = (short)AssetType.Animation;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Body Parts";
+                folder.Type = (short)AssetType.Bodypart;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Calling Cards";
+                folder.Type = (short)AssetType.CallingCard;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Clothing";
+                folder.Type = (short)AssetType.Clothing;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Gestures";
+                folder.Type = (short)AssetType.Gesture;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Landmarks";
+                folder.Type = (short)AssetType.Landmark;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Lost And Found";
+                folder.Type = (short)AssetType.LostAndFoundFolder;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Notecards";
+                folder.Type = (short)AssetType.Notecard;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Objects";
+                folder.Type = (short)AssetType.Object;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Photo Album";
+                folder.Type = (short)AssetType.SnapshotFolder;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Scripts";
+                folder.Type = (short)AssetType.LSLText;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Sounds";
+                folder.Type = (short)AssetType.Sound;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Textures";
+                folder.Type = (short)AssetType.Texture;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+
+                folder = new InventoryFolderBase();
+                folder.ParentID = rootFolder;
+                folder.Owner = user;
+                folder.ID = UUID.Random();
+                folder.Name = "Trash";
+                folder.Type = (short)AssetType.TrashFolder;
+                folder.Version = 1;
+                Folders.Add(folder.ID, folder);
+            }
+        }
+    }
+}