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/*
Copyright (c) OpenSim project, http://sim.opensecondlife.org/
 *
 * 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 <organization> 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 <copyright holder> ``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 <copyright holder> 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 libsecondlife;
using libsecondlife.Packets;
using libsecondlife.AssetSystem;
using System.IO;

namespace OpenSim
{
	/// <summary>
	/// Description of InventoryManager.
	/// </summary>
	public class InventoryManager
	{
		
		public Dictionary<LLUUID, InventoryFolder> Folders;
		public Dictionary<LLUUID, InventoryItem> Items;
		private Server _server;
		private System.Text.Encoding _enc = System.Text.Encoding.ASCII;
		private const uint FULL_MASK_PERMISSIONS = 2147483647;
		 
		/// <summary>
		/// 
		/// </summary>
		/// <param name="serve"></param>
		public InventoryManager(Server server)
		{
			_server = server;
			Folders=new Dictionary<LLUUID, InventoryFolder>();
			Items=new Dictionary<LLUUID, InventoryItem>();
		}
		
		/// <summary>
		/// 
		/// </summary>
		/// <param name="UserInfo"></param>
		/// <param name="FolderID"></param>
		/// <param name="Asset"></param>
		/// <returns></returns>
		public LLUUID AddToInventory(UserAgentInfo userInfo, LLUUID folderID, AssetBase asset)
		{
			if(this.Folders.ContainsKey(folderID))
			{
				LLUUID NewItemID = LLUUID.Random();
				
				InventoryItem Item = new InventoryItem();
				Item.FolderID = folderID;
				Item.OwnerID = userInfo.AgentID;
				Item.AssetID = asset.FullID;
				Item.ItemID = NewItemID;
				Item.Type = asset.Type;
				Item.Name = asset.Name;
				Item.Description = asset.Description;
				Item.InvType = asset.InvType;
				this.Items.Add(Item.ItemID, Item);
				InventoryFolder Folder = Folders[Item.FolderID];
				Folder.Items.Add(Item);
				return(Item.ItemID);
			}
			else
			{
				return(null);
			}
		}
		
		/// <summary>
		/// 
		/// </summary>
		/// <param name="UserInfo"></param>
		/// <param name="NewFolder"></param>
		/// <returns></returns>
		public bool CreateNewFolder(UserAgentInfo userInfo, LLUUID newFolder)
		{
			InventoryFolder Folder = new InventoryFolder();
			Folder.FolderID = newFolder;
			Folder.OwnerID = userInfo.AgentID;
			this.Folders.Add(Folder.FolderID, Folder);
			
			return(true);
		}
		
		/// <summary>
		/// 
		/// </summary>
		/// <param name="User_info"></param>
		/// <param name="FetchDescend"></param>
		public void FetchInventoryDescendents(UserAgentInfo userInfo, FetchInventoryDescendentsPacket FetchDescend)
		{
			if(FetchDescend.InventoryData.FetchItems)
			{
				if(this.Folders.ContainsKey(FetchDescend.InventoryData.FolderID))
				{
						
					InventoryFolder Folder = this.Folders[FetchDescend.InventoryData.FolderID];
					InventoryDescendentsPacket Descend = new InventoryDescendentsPacket();
					Descend.AgentData.AgentID = userInfo.AgentID;
					Descend.AgentData.OwnerID = Folder.OwnerID;
					Descend.AgentData.FolderID = FetchDescend.InventoryData.FolderID;
					Descend.AgentData.Descendents = Folder.Items.Count;
					Descend.AgentData.Version = Folder.Items.Count;
					
					Descend.ItemData = new InventoryDescendentsPacket.ItemDataBlock[Folder.Items.Count];
					for(int i = 0; i < Folder.Items.Count ; i++)
					{
						
						InventoryItem Item=Folder.Items[i];
						Descend.ItemData[i] = new InventoryDescendentsPacket.ItemDataBlock();
						Descend.ItemData[i].ItemID = Item.ItemID;
						Descend.ItemData[i].AssetID = Item.AssetID;
						Descend.ItemData[i].CreatorID = Item.CreatorID;
						Descend.ItemData[i].BaseMask = FULL_MASK_PERMISSIONS;
						Descend.ItemData[i].CreationDate = 1000;
						Descend.ItemData[i].Description = _enc.GetBytes(Item.Description+"\0");
						Descend.ItemData[i].EveryoneMask = FULL_MASK_PERMISSIONS;
						Descend.ItemData[i].Flags = 1;
						Descend.ItemData[i].FolderID = Item.FolderID;
						Descend.ItemData[i].GroupID = new LLUUID("00000000-0000-0000-0000-000000000000");
						Descend.ItemData[i].GroupMask = FULL_MASK_PERMISSIONS;
						Descend.ItemData[i].InvType = Item.InvType;
						Descend.ItemData[i].Name = _enc.GetBytes(Item.Name+"\0");
						Descend.ItemData[i].NextOwnerMask = FULL_MASK_PERMISSIONS;
						Descend.ItemData[i].OwnerID = Item.OwnerID;
						Descend.ItemData[i].OwnerMask = FULL_MASK_PERMISSIONS;
						Descend.ItemData[i].SalePrice = 100;
						Descend.ItemData[i].SaleType = 0;
						Descend.ItemData[i].Type = Item.Type;
						Descend.ItemData[i].CRC=libsecondlife.Helpers.InventoryCRC(1000, 0, Descend.ItemData[i].InvType, Descend.ItemData[i].Type, Descend.ItemData[i].AssetID, Descend.ItemData[i].GroupID, 100, Descend.ItemData[i].OwnerID, Descend.ItemData[i].CreatorID, Descend.ItemData[i].ItemID, Descend.ItemData[i].FolderID, FULL_MASK_PERMISSIONS, 1, FULL_MASK_PERMISSIONS, FULL_MASK_PERMISSIONS, FULL_MASK_PERMISSIONS);
					}
					_server.SendPacket(Descend, true, userInfo);
					
				}
			}
			else
			{
				Console.WriteLine("fetch subfolders");
			}
		}

		/// <summary>
		/// 
		/// </summary>
		/// <param name="User_info"></param>
		public void FetchInventory(UserAgentInfo userInfo, FetchInventoryPacket FetchItems)
		{
			
			for(int i = 0; i < FetchItems.InventoryData.Length; i++)
			{
				if(this.Items.ContainsKey(FetchItems.InventoryData[i].ItemID))
				{
					
					InventoryItem Item = Items[FetchItems.InventoryData[i].ItemID];
					FetchInventoryReplyPacket InventoryReply = new FetchInventoryReplyPacket();
					InventoryReply.AgentData.AgentID = userInfo.AgentID;
					InventoryReply.InventoryData = new FetchInventoryReplyPacket.InventoryDataBlock[1];
					InventoryReply.InventoryData[0] = new FetchInventoryReplyPacket.InventoryDataBlock();
					InventoryReply.InventoryData[0].ItemID = Item.ItemID;
					InventoryReply.InventoryData[0].AssetID = Item.AssetID;
					InventoryReply.InventoryData[0].CreatorID = Item.CreatorID;
					InventoryReply.InventoryData[0].BaseMask = FULL_MASK_PERMISSIONS;
					InventoryReply.InventoryData[0].CreationDate = 1000;
					InventoryReply.InventoryData[0].Description = _enc.GetBytes(  Item.Description+"\0");
					InventoryReply.InventoryData[0].EveryoneMask = FULL_MASK_PERMISSIONS;
					InventoryReply.InventoryData[0].Flags = 1;
					InventoryReply.InventoryData[0].FolderID = Item.FolderID;
					InventoryReply.InventoryData[0].GroupID = new LLUUID("00000000-0000-0000-0000-000000000000");
					InventoryReply.InventoryData[0].GroupMask = FULL_MASK_PERMISSIONS;
					InventoryReply.InventoryData[0].InvType = Item.InvType;
					InventoryReply.InventoryData[0].Name = _enc.GetBytes(Item.Name+"\0");
					InventoryReply.InventoryData[0].NextOwnerMask = FULL_MASK_PERMISSIONS;
					InventoryReply.InventoryData[0].OwnerID = Item.OwnerID;
					InventoryReply.InventoryData[0].OwnerMask = FULL_MASK_PERMISSIONS;
					InventoryReply.InventoryData[0].SalePrice = 100;
					InventoryReply.InventoryData[0].SaleType = 0;
					InventoryReply.InventoryData[0].Type = Item.Type;
					InventoryReply.InventoryData[0].CRC = libsecondlife.Helpers.InventoryCRC(1000, 0, InventoryReply.InventoryData[0].InvType, InventoryReply.InventoryData[0].Type, InventoryReply.InventoryData[0].AssetID, InventoryReply.InventoryData[0].GroupID, 100, InventoryReply.InventoryData[0].OwnerID, InventoryReply.InventoryData[0].CreatorID, InventoryReply.InventoryData[0].ItemID, InventoryReply.InventoryData[0].FolderID, FULL_MASK_PERMISSIONS, 1, FULL_MASK_PERMISSIONS, FULL_MASK_PERMISSIONS, FULL_MASK_PERMISSIONS);
					_server.SendPacket(InventoryReply, true, userInfo);
				}
			}
		}
	}
	
	public class InventoryFolder
	{
		public List<InventoryItem> Items;
		//public List<InventoryFolder> Subfolders;
		
		public LLUUID FolderID;
		public LLUUID OwnerID;
		public LLUUID ParentID;
		
		
		public InventoryFolder()
		{
			Items = new List<InventoryItem>();
		}
		
	}
	
	public class InventoryItem
	{
		public LLUUID FolderID;
		public LLUUID OwnerID;
		public LLUUID ItemID;
		public LLUUID AssetID;
		public LLUUID CreatorID = LLUUID.Zero;
		public sbyte InvType;
		public sbyte Type;
		public string Name;
		public string Description;
		
		public InventoryItem()
		{
			
		}
	}
}