using System;
using System.IO;
using System.Collections.Generic;
using libsecondlife;
using libsecondlife.Packets;
using OpenSim.Framework.Interfaces;
using OpenSim.Framework.Types;
using OpenSim.Framework.Communications.Caches;
using OpenSim.Framework.Data;
using OpenSim.Framework.Utilities;

namespace OpenSim.Region.Environment.Scenes
{
    public partial class Scene
    {
        //split these method into this partial as a lot of these (hopefully) are only temporary and won't be needed once Caps is more complete
        // or at least some of they can be moved somewhere else

        public void AddInventoryItem(LLUUID userID, InventoryItemBase item)
        {
            if (this.Avatars.ContainsKey(userID))
            {
                this.AddInventoryItem(this.Avatars[userID].ControllingClient, item);
            }
        }

        public void AddInventoryItem(IClientAPI remoteClient, InventoryItemBase item)
        {
            CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
            if (userInfo != null)
            {
                userInfo.AddItem(remoteClient.AgentId, item);
                remoteClient.SendInventoryItemUpdate(item);
            }
        }

        public LLUUID CapsUpdateInventoryItemAsset(LLUUID userID, LLUUID itemID, byte[] data)
        {
            if (this.Avatars.ContainsKey(userID))
            {
                return this.CapsUpdateInventoryItemAsset(this.Avatars[userID].ControllingClient, itemID, data);
            }
            return LLUUID.Zero;
        }

        public LLUUID CapsUpdateInventoryItemAsset(IClientAPI remoteClient, LLUUID itemID, byte[] data)
        {
            CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
            if (userInfo != null)
            {
                if (userInfo.RootFolder != null)
                {
                    InventoryItemBase item = userInfo.RootFolder.HasItem(itemID);
                    if (item != null)
                    {
                        AssetBase asset;
                        asset = new AssetBase();
                        asset.FullID = LLUUID.Random();
                        asset.Type = (sbyte)item.assetType;
                        asset.InvType = (sbyte)item.invType;
                        asset.Name = item.inventoryName;
                        asset.Data = data;
                        commsManager.AssetCache.AddAsset(asset);

                        item.assetID = asset.FullID;
                        userInfo.UpdateItem(remoteClient.AgentId, item);

                        // remoteClient.SendInventoryItemUpdate(item);
                        if (item.invType == 7)
                        {
                            //do we want to know about updated note cards?
                        }
                        else if (item.invType == 10)
                        {
                            // do we want to know about updated scripts
                        }

                        return (asset.FullID);
                    }
                }
            }
            return LLUUID.Zero;
        }

        public void UDPUpdateInventoryItemAsset(IClientAPI remoteClient, LLUUID transactionID, LLUUID assetID, LLUUID itemID)
        {
            CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
            if (userInfo != null)
            {
                if (userInfo.RootFolder != null)
                {
                    InventoryItemBase item = userInfo.RootFolder.HasItem(itemID);
                    if (item != null)
                    {
                        AgentAssetTransactions transactions = commsManager.TransactionsManager.GetUserTransActions(remoteClient.AgentId);
                        if (transactions != null)
                        {
                            AssetBase asset = null;
                            bool addToCache = false;

                            asset = commsManager.AssetCache.GetAsset(assetID);
                            if (asset == null)
                            {
                                asset = transactions.GetTransactionAsset(transactionID);
                                addToCache = true;
                            }

                            if (asset != null)
                            {
                                if (asset.FullID == assetID)
                                {
                                    asset.Name = item.inventoryName;
                                    asset.Description = item.inventoryDescription;
                                    asset.InvType = (sbyte) item.invType;
                                    asset.Type = (sbyte) item.assetType;
                                    item.assetID = asset.FullID;

                                    if (addToCache)
                                    {
                                        commsManager.AssetCache.AddAsset(asset);
                                    }

                                    userInfo.UpdateItem(remoteClient.AgentId, item);
                                }
                            }
                        }
                    }
                }
            }
        }

        /// <summary>
        /// temporary method to test out creating new inventory items
        /// </summary>
        /// <param name="remoteClient"></param>
        /// <param name="transActionID"></param>
        /// <param name="folderID"></param>
        /// <param name="callbackID"></param>
        /// <param name="description"></param>
        /// <param name="name"></param>
        /// <param name="invType"></param>
        /// <param name="type"></param>
        /// <param name="wearableType"></param>
        /// <param name="nextOwnerMask"></param>
        public void CreateNewInventoryItem(IClientAPI remoteClient, LLUUID transActionID, LLUUID folderID, uint callbackID, string description, string name, sbyte invType, sbyte type, byte wearableType, uint nextOwnerMask)
        {
            if (transActionID == LLUUID.Zero)
            {
                CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
                if (userInfo != null)
                {
                    AssetBase asset = new AssetBase();
                    asset.Name = name;
                    asset.Description = description;
                    asset.InvType = invType;
                    asset.Type = type;
                    asset.FullID = LLUUID.Random();
                    asset.Data = new byte[1];
                    this.commsManager.AssetCache.AddAsset(asset);

                    InventoryItemBase item = new InventoryItemBase();
                    item.avatarID = remoteClient.AgentId;
                    item.creatorsID = remoteClient.AgentId;
                    item.inventoryID = LLUUID.Random();
                    item.assetID = asset.FullID;
                    item.inventoryDescription = description;
                    item.inventoryName = name;
                    item.assetType = invType;
                    item.invType = invType;
                    item.parentFolderID = folderID;
                    item.inventoryCurrentPermissions = 2147483647;
                    item.inventoryNextPermissions = nextOwnerMask;

                    userInfo.AddItem(remoteClient.AgentId, item);
                    remoteClient.SendInventoryItemUpdate(item);
                }
            }
            else
            {
                commsManager.TransactionsManager.HandleInventoryFromTransaction(remoteClient, transActionID, folderID, callbackID, description, name, invType, type, wearableType, nextOwnerMask);
                //System.Console.WriteLine("request to create inventory item from transaction " + transActionID);
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="remoteClient"></param>
        /// <param name="primLocalID"></param>
        public void RequestTaskInventory(IClientAPI remoteClient, uint primLocalID)
        {

            bool hasPrim = false;
            foreach (EntityBase ent in Entities.Values)
            {
                if (ent is SceneObjectGroup)
                {
                    hasPrim = ((SceneObjectGroup)ent).HasChildPrim(primLocalID);
                    if (hasPrim != false)
                    {
                        ((SceneObjectGroup)ent).GetPartInventoryFileName(remoteClient, primLocalID);
                        break;
                    }
                }
            }
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="packet"></param>
        /// <param name="simClient"></param>
        public void DeRezObject(Packet packet, IClientAPI remoteClient)
        {
            DeRezObjectPacket DeRezPacket = (DeRezObjectPacket)packet;


            if (DeRezPacket.AgentBlock.DestinationID == LLUUID.Zero)
            {
                //currently following code not used (or don't know of any case of destination being zero
            }
            else
            {
                foreach (DeRezObjectPacket.ObjectDataBlock Data in DeRezPacket.ObjectData)
                {
                    EntityBase selectedEnt = null;
                    //OpenSim.Framework.Console.MainConsole.Instance.WriteLine("LocalID:" + Data.ObjectLocalID.ToString());
                    foreach (EntityBase ent in this.Entities.Values)
                    {
                        if (ent.LocalId == Data.ObjectLocalID)
                        {
                            selectedEnt = ent;
                            break;
                        }
                    }
                    if (selectedEnt != null)
                    {
                        if (PermissionsMngr.CanDeRezObject(remoteClient.AgentId, ((SceneObjectGroup)selectedEnt).UUID))
                        {
                            string sceneObjectXml = ((SceneObjectGroup)selectedEnt).ToXmlString();
                            CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
                            if (userInfo != null)
                            {
                                AssetBase asset = new AssetBase();
                                asset.Name = ((SceneObjectGroup)selectedEnt).GetPartName(selectedEnt.LocalId);
                                asset.Description = ((SceneObjectGroup)selectedEnt).GetPartDescription(selectedEnt.LocalId);
                                asset.InvType = 6;
                                asset.Type = 6;
                                asset.FullID = LLUUID.Random();
                                asset.Data = Helpers.StringToField(sceneObjectXml);
                                commsManager.AssetCache.AddAsset(asset);


                                InventoryItemBase item = new InventoryItemBase();
                                item.avatarID = remoteClient.AgentId;
                                item.creatorsID = remoteClient.AgentId;
                                item.inventoryID = LLUUID.Random();
                                item.assetID = asset.FullID;
                                item.inventoryDescription = asset.Description;
                                item.inventoryName = asset.Name;
                                item.assetType = asset.Type;
                                item.invType = asset.InvType;
                                item.parentFolderID = DeRezPacket.AgentBlock.DestinationID;
                                item.inventoryCurrentPermissions = 2147483647;
                                item.inventoryNextPermissions = 2147483647;

                                userInfo.AddItem(remoteClient.AgentId, item);
                                remoteClient.SendInventoryItemUpdate(item);
                            }

                            storageManager.DataStore.RemoveObject(((SceneObjectGroup)selectedEnt).UUID, m_regInfo.SimUUID);
                            ((SceneObjectGroup)selectedEnt).DeleteGroup();

                            lock (Entities)
                            {
                                Entities.Remove(((SceneObjectGroup)selectedEnt).UUID);
                            }
                        }
                    }
                }
            }
        }

        public void RezObject(IClientAPI remoteClient, LLUUID itemID, LLVector3 pos)
        {
            CachedUserInfo userInfo = commsManager.UserProfiles.GetUserDetails(remoteClient.AgentId);
            if (userInfo != null)
            {
                if (userInfo.RootFolder != null)
                {
                    InventoryItemBase item = userInfo.RootFolder.HasItem(itemID);
                    if (item != null)
                    {
                        AssetBase rezAsset = commsManager.AssetCache.GetAsset(item.assetID, false);
                        if (rezAsset != null)
                        {
                            this.AddRezObject(Util.FieldToString(rezAsset.Data), pos);
                            userInfo.DeleteItem(remoteClient.AgentId, item);
                            remoteClient.SendRemoveInventoryItem(itemID);
                        }
                        else
                        {
                            //lets try once more incase the asset cache is being slow getting the asset from server
                            rezAsset = commsManager.AssetCache.GetAsset(item.assetID, false);
                            if (rezAsset != null)
                            {
                                this.AddRezObject(Util.FieldToString(rezAsset.Data), pos);
                                userInfo.DeleteItem(remoteClient.AgentId, item);
                                remoteClient.SendRemoveInventoryItem(itemID);
                            }
                        }
                    }
                }
            }
        }

        private void AddRezObject(string xmlData, LLVector3 pos)
        {
            SceneObjectGroup group = new SceneObjectGroup(this, this.m_regionHandle, xmlData);
            this.AddEntity(group);
            group.AbsolutePosition = pos;
        }
    }

}