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 * modification, are permitted provided that the following conditions are met:
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 *       notice, this list of conditions and the following disclaimer.
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 *       documentation and/or other materials provided with the distribution.
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 *       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
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using OpenMetaverse;
using OpenSim.Framework;
using System;
using System.Collections.Generic;
using OpenSim.Services.Interfaces;
using OpenSim.Services.Friends;
using OpenSim.Data;
using Nini.Config;
using log4net;
using FriendInfo = OpenSim.Services.Interfaces.FriendInfo;

namespace OpenSim.Services.HypergridService
{
    public class HGFriendsService : FriendsService, IFriendsService
    {
        public HGFriendsService(IConfigSource config) : base(config)
        {
        }

        /// <summary>
        /// Overrides base. 
        /// Storing new friendships from the outside is a tricky, sensitive operation, and it 
        /// needs to be done under certain restrictions.
        /// First of all, if the friendship already exists, this is a no-op. In other words, 
        /// we cannot change just the flags, it needs to be a new friendship.
        /// Second, we store it as flags=0 always, independent of what the caller sends. The
        /// owner of the friendship needs to confirm when it gets back home.
        /// </summary>
        /// <param name="PrincipalID"></param>
        /// <param name="Friend"></param>
        /// <param name="flags"></param>
        /// <returns></returns>
        public override bool StoreFriend(string PrincipalID, string Friend, int flags)
        {
            UUID userID;
            if (UUID.TryParse(PrincipalID, out userID))
            {
                FriendsData[] friendsData = m_Database.GetFriends(userID.ToString());
                List<FriendsData> fList = new List<FriendsData>(friendsData);
                if (fList.Find(delegate(FriendsData fdata)
                    {
                        return fdata.Friend == Friend;
                    }) != null)
                    return false;
            }
            else
                return false;

            FriendsData d = new FriendsData();
            d.PrincipalID = PrincipalID;
            d.Friend = Friend;
            d.Data = new Dictionary<string, string>();
            d.Data["Flags"] = "0";

            return m_Database.Store(d);
        }

        /// <summary>
        /// Overrides base. Cannot delete friendships while away from home.
        /// </summary>
        /// <param name="PrincipalID"></param>
        /// <param name="Friend"></param>
        /// <returns></returns>
        public override bool Delete(UUID PrincipalID, string Friend)
        {
            return false;
        }

    }
}