/*
 * 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;
using System.Collections.Generic;
using System.Reflection;
using log4net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Capabilities;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;
using OSDArray = OpenMetaverse.StructuredData.OSDArray;
using OSDMap = OpenMetaverse.StructuredData.OSDMap;

namespace OpenSim.Capabilities.Handlers
{
    public class FetchInventory2Handler
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private IInventoryService m_inventoryService;

        public FetchInventory2Handler(IInventoryService invService)
        {
            m_inventoryService = invService;
        }

        public string FetchInventoryRequest(string request, string path, string param, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
        {
//            m_log.DebugFormat("[FETCH INVENTORY HANDLER]: Received FetchInventory capabilty request");

            OSDMap requestmap = (OSDMap)OSDParser.DeserializeLLSDXml(Utils.StringToBytes(request));
            OSDArray itemsRequested = (OSDArray)requestmap["items"];

            string reply;
            LLSDFetchInventory llsdReply = new LLSDFetchInventory();

            foreach (OSDMap osdItemId in itemsRequested)
            {
                UUID itemId = osdItemId["item_id"].AsUUID();

                InventoryItemBase item = m_inventoryService.GetItem(new InventoryItemBase(itemId));

                if (item != null)
                {
                    // We don't know the agent that this request belongs to so we'll use the agent id of the item
                    // which will be the same for all items.
                    llsdReply.agent_id = item.Owner;

                    llsdReply.items.Array.Add(ConvertInventoryItem(item));
                }
            }

            reply = LLSDHelpers.SerialiseLLSDReply(llsdReply);

            return reply;
        }

        /// <summary>
        /// Convert an internal inventory item object into an LLSD object.
        /// </summary>
        /// <param name="invItem"></param>
        /// <returns></returns>
        private LLSDInventoryItem ConvertInventoryItem(InventoryItemBase invItem)
        {
            LLSDInventoryItem llsdItem = new LLSDInventoryItem();
            llsdItem.asset_id = invItem.AssetID;
            llsdItem.created_at = invItem.CreationDate;
            llsdItem.desc = invItem.Description;
            llsdItem.flags = (int)invItem.Flags;
            llsdItem.item_id = invItem.ID;
            llsdItem.name = invItem.Name;
            llsdItem.parent_id = invItem.Folder;

            try
            {
                llsdItem.type = Utils.AssetTypeToString((AssetType)invItem.AssetType);
                llsdItem.inv_type = Utils.InventoryTypeToString((InventoryType)invItem.InvType);
            }
            catch (Exception e)
            {
                m_log.ErrorFormat(
                    "[WEB FETCH INV DESC HANDLER]: Problem setting asset {0} inventory {1} types while converting inventory item {2}: {3}",
                    invItem.AssetType, invItem.InvType, invItem.Name, e.Message);
            }

            llsdItem.permissions = new LLSDPermissions();
            llsdItem.permissions.creator_id = invItem.CreatorIdAsUuid;
            llsdItem.permissions.base_mask = (int)invItem.CurrentPermissions;
            llsdItem.permissions.everyone_mask = (int)invItem.EveryOnePermissions;
            llsdItem.permissions.group_id = invItem.GroupID;
            llsdItem.permissions.group_mask = (int)invItem.GroupPermissions;
            llsdItem.permissions.is_owner_group = invItem.GroupOwned;
            llsdItem.permissions.next_owner_mask = (int)invItem.NextPermissions;
            llsdItem.permissions.owner_id = invItem.Owner;
            llsdItem.permissions.owner_mask = (int)invItem.CurrentPermissions;
            llsdItem.sale_info = new LLSDSaleInfo();
            llsdItem.sale_info.sale_price = invItem.SalePrice;
            switch (invItem.SaleType)
            {
                default:
                    llsdItem.sale_info.sale_type = "not";
                    break;
                case 1:
                    llsdItem.sale_info.sale_type = "original";
                    break;
                case 2:
                    llsdItem.sale_info.sale_type = "copy";
                    break;
                case 3:
                    llsdItem.sale_info.sale_type = "contents";
                    break;
            }

            return llsdItem;
        }
    }
}