/*
 * 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 OpenSim 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 libsecondlife;
using libsecondlife.Packets;

namespace OpenSim.Framework
{
    public class AgentInventory
    {
        //Holds the local copy of Inventory info for a agent
        public Dictionary<LLUUID, InventoryFolder> InventoryFolders;
        public Dictionary<LLUUID, InventoryItem> InventoryItems;
        public InventoryFolder InventoryRoot;
        public int LastCached; //maybe used by opensim app, time this was last stored/compared to user server
        public LLUUID AgentID;
        public AvatarWearable[] Wearables;

        public AgentInventory()
        {
            InventoryFolders = new Dictionary<LLUUID, InventoryFolder>();
            InventoryItems = new Dictionary<LLUUID, InventoryItem>();
            Initialise();
        }

        public virtual void Initialise()
        {
            Wearables = new AvatarWearable[13];
            for (int i = 0; i < 13; i++)
            {
                Wearables[i] = new AvatarWearable();
            }
        }

        public bool CreateNewFolder(LLUUID folderID, ushort type)
        {
            InventoryFolder Folder = new InventoryFolder();
            Folder.FolderID = folderID;
            Folder.OwnerID = AgentID;
            Folder.DefaultType = type;
            InventoryFolders.Add(Folder.FolderID, Folder);
            return (true);
        }

        public void CreateRootFolder(LLUUID newAgentID)
        {
            AgentID = newAgentID;
            InventoryRoot = new InventoryFolder();
            InventoryRoot.FolderID = LLUUID.Random();
            InventoryRoot.ParentID = LLUUID.Zero;
            InventoryRoot.Version = 1;
            InventoryRoot.DefaultType = 8;
            InventoryRoot.OwnerID = AgentID;
            InventoryRoot.FolderName = "My Inventory";
            InventoryFolders.Add(InventoryRoot.FolderID, InventoryRoot);
            InventoryRoot.OwnerID = AgentID;
        }

        public bool CreateNewFolder(LLUUID folderID, ushort type, string folderName)
        {
            InventoryFolder Folder = new InventoryFolder();
            Folder.FolderID = folderID;
            Folder.OwnerID = AgentID;
            Folder.DefaultType = type;
            Folder.FolderName = folderName;
            InventoryFolders.Add(Folder.FolderID, Folder);
            return (true);
        }

        public bool CreateNewFolder(LLUUID folderID, ushort type, string folderName, LLUUID parentID)
        {
            if (!InventoryFolders.ContainsKey(folderID))
            {
                System.Console.WriteLine("creating new folder called " + folderName + " in agents inventory");
                InventoryFolder Folder = new InventoryFolder();
                Folder.FolderID = folderID;
                Folder.OwnerID = AgentID;
                Folder.DefaultType = type;
                Folder.FolderName = folderName;
                Folder.ParentID = parentID;
                InventoryFolders.Add(Folder.FolderID, Folder);
            }
            return (true);
        }

        public bool HasFolder(LLUUID folderID)
        {
            if (InventoryFolders.ContainsKey(folderID))
            {
                return true;
            }
            return false;
        }

        public LLUUID GetFolderID(string folderName)
        {
            foreach (InventoryFolder inv in InventoryFolders.Values)
            {
                if (inv.FolderName == folderName)
                {
                    return inv.FolderID;
                }
            }
            return LLUUID.Zero;
        }

        public bool UpdateItemAsset(LLUUID itemID, AssetBase asset)
        {
            if (InventoryItems.ContainsKey(itemID))
            {
                InventoryItem Item = InventoryItems[itemID];
                Item.AssetID = asset.FullID;
                System.Console.WriteLine("updated inventory item " + itemID.ToString() +
                                         " so it now is set to asset " + asset.FullID.ToString());
                //TODO need to update the rest of the info
            }
            return true;
        }

        public bool UpdateItemDetails(LLUUID itemID, UpdateInventoryItemPacket.InventoryDataBlock packet)
        {
            System.Console.WriteLine("updating inventory item details");
            if (InventoryItems.ContainsKey(itemID))
            {
                System.Console.WriteLine("changing name to " + Util.FieldToString(packet.Name));
                InventoryItem Item = InventoryItems[itemID];
                Item.Name = Util.FieldToString(packet.Name);
                System.Console.WriteLine("updated inventory item " + itemID.ToString());
                //TODO need to update the rest of the info
            }
            return true;
        }

        public LLUUID AddToInventory(LLUUID folderID, AssetBase asset)
        {
            if (InventoryFolders.ContainsKey(folderID))
            {
                LLUUID NewItemID = LLUUID.Random();

                InventoryItem Item = new InventoryItem();
                Item.FolderID = folderID;
                Item.OwnerID = AgentID;
                Item.AssetID = asset.FullID;
                Item.ItemID = NewItemID;
                Item.Type = asset.Type;
                Item.Name = asset.Name;
                Item.Description = asset.Description;
                Item.InvType = asset.InvType;
                InventoryItems.Add(Item.ItemID, Item);
                InventoryFolder Folder = InventoryFolders[Item.FolderID];
                Folder.Items.Add(Item);
                return (Item.ItemID);
            }
            else
            {
                return (null);
            }
        }

        public bool DeleteFromInventory(LLUUID itemID)
        {
            bool res = false;
            if (InventoryItems.ContainsKey(itemID))
            {
                InventoryItem item = InventoryItems[itemID];
                InventoryItems.Remove(itemID);
                foreach (InventoryFolder fold in InventoryFolders.Values)
                {
                    if (fold.Items.Contains(item))
                    {
                        fold.Items.Remove(item);
                        break;
                    }
                }
                res = true;
            }
            return res;
        }
    }

    public class InventoryFolder
    {
        public List<InventoryItem> Items;
        //public List<InventoryFolder> Subfolders;
        public LLUUID FolderID;
        public LLUUID OwnerID;
        public LLUUID ParentID = LLUUID.Zero;
        public string FolderName;
        public ushort DefaultType;
        public ushort Version;

        public InventoryFolder()
        {
            Items = new List<InventoryItem>();
            //Subfolders = new List<InventoryFolder>();
        }
    }

    public class InventoryItem
    {
        public LLUUID FolderID;
        public LLUUID OwnerID;
        public LLUUID ItemID;
        public LLUUID AssetID;
        public LLUUID CreatorID;
        public sbyte InvType;
        public sbyte Type;
        public string Name = System.String.Empty;
        public string Description;

        public InventoryItem()
        {
            CreatorID = LLUUID.Zero;
        }

        public string ExportString()
        {
            string typ = "notecard";
            string result = System.String.Empty;
            result += "\tinv_object\t0\n\t{\n";
            result += "\t\tobj_id\t%s\n";
            result += "\t\tparent_id\t" + ItemID.ToString() + "\n";
            result += "\t\ttype\t" + typ + "\n";
            result += "\t\tname\t" + Name + "|\n";
            result += "\t}\n";
            return result;
        }
    }
}
