/*
 * 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
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * 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 Mono.Addins;
using Nini.Config;
using OpenMetaverse;
using OpenSim.Data;
using OpenSim.Data.Null;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups;

namespace OpenSim.Tests.Common.Mock
{
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
    public class MockGroupsServicesConnector : ISharedRegionModule, IGroupsServicesConnector
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        IXGroupData m_data = new NullXGroupData(null, null);

        public string Name
        {
            get { return "MockGroupsServicesConnector"; }
        }

        public Type ReplaceableInterface
        {
            get { return null; }
        }

        public void Initialise(IConfigSource config)
        {
        }

        public void Close()
        {
        }

        public void AddRegion(Scene scene)
        {
            m_log.DebugFormat("[MOCK GROUPS SERVICES CONNECTOR]: Adding to region {0}", scene.RegionInfo.RegionName);
            scene.RegisterModuleInterface<IGroupsServicesConnector>(this);
        }

        public void RemoveRegion(Scene scene)
        {
        }

        public void RegionLoaded(Scene scene)
        {
        }

        public void PostInitialise()
        {
        }

        public UUID CreateGroup(UUID requestingAgentID, string name, string charter, bool showInList, UUID insigniaID, 
                                int membershipFee, bool openEnrollment, bool allowPublish, 
                                bool maturePublish, UUID founderID)
        {
            XGroup group = new XGroup()
            {
                groupID = UUID.Random(),
                ownerRoleID = UUID.Random(),
                name = name,
                charter = charter,
                showInList = showInList,
                insigniaID = insigniaID,
                membershipFee = membershipFee,
                openEnrollment = openEnrollment,
                allowPublish = allowPublish,
                maturePublish = maturePublish,
                founderID = founderID,
                everyonePowers = (ulong)XmlRpcGroupsServicesConnectorModule.DefaultEveryonePowers,
                ownersPowers = (ulong)XmlRpcGroupsServicesConnectorModule.DefaultOwnerPowers
            };

            if (m_data.StoreGroup(group))
            {
                m_log.DebugFormat("[MOCK GROUPS SERVICES CONNECTOR]: Created group {0} {1}", group.name, group.groupID);
                return group.groupID;
            }
            else
            {
                m_log.ErrorFormat("[MOCK GROUPS SERVICES CONNECTOR]: Failed to create group {0}", name);
                return UUID.Zero;
            }
        }

        public void UpdateGroup(UUID requestingAgentID, UUID groupID, string charter, bool showInList, 
                                UUID insigniaID, int membershipFee, bool openEnrollment, 
                                bool allowPublish, bool maturePublish)
        {
        }

        public void AddGroupRole(UUID requestingAgentID, UUID groupID, UUID roleID, string name, string description, 
                                 string title, ulong powers)
        {
        }

        public void RemoveGroupRole(UUID requestingAgentID, UUID groupID, UUID roleID)
        {
        }

        public void UpdateGroupRole(UUID requestingAgentID, UUID groupID, UUID roleID, string name, string description, 
                                    string title, ulong powers)
        {
        }

        private XGroup GetXGroup(UUID groupID, string name)
        {
            XGroup group = m_data.GetGroup(groupID);


            if (group == null)
                m_log.DebugFormat("[MOCK GROUPS SERVICES CONNECTOR]: No group found with ID {0}", groupID);               

            return group;
        }

        public GroupRecord GetGroupRecord(UUID requestingAgentID, UUID groupID, string groupName)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: Processing GetGroupRecord() for groupID {0}, name {1}", 
                groupID, groupName);

            XGroup xg = GetXGroup(groupID, groupName);

            if (xg == null)
                return null;

            GroupRecord gr = new GroupRecord()
            {
                GroupID = xg.groupID,
                GroupName = xg.name,
                AllowPublish = xg.allowPublish,
                MaturePublish = xg.maturePublish,
                Charter = xg.charter,
                FounderID = xg.founderID,
                // FIXME: group picture storage location unknown
                MembershipFee = xg.membershipFee,
                OpenEnrollment = xg.openEnrollment,
                OwnerRoleID = xg.ownerRoleID,
                ShowInList = xg.showInList
            };

            return gr;
        }

        public GroupProfileData GetMemberGroupProfile(UUID requestingAgentID, UUID GroupID, UUID AgentID)
        {
            return default(GroupProfileData);
        }

        public void SetAgentActiveGroup(UUID requestingAgentID, UUID AgentID, UUID GroupID)
        {
        }

        public void SetAgentActiveGroupRole(UUID requestingAgentID, UUID AgentID, UUID GroupID, UUID RoleID)
        {
        }

        public void SetAgentGroupInfo(UUID requestingAgentID, UUID agentID, UUID groupID, bool acceptNotices, bool listInProfile)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: SetAgentGroupInfo, requestingAgentID {0}, agentID {1}, groupID {2}, acceptNotices {3}, listInProfile {4}", 
                requestingAgentID, agentID, groupID, acceptNotices, listInProfile);

            XGroup group = GetXGroup(groupID, null);

            if (group == null)
                return;

            XGroupMember xgm = null;
            if (!group.members.TryGetValue(agentID, out xgm))
                return;

            xgm.acceptNotices = acceptNotices;
            xgm.listInProfile = listInProfile;

            m_data.StoreGroup(group);
        }

        public void AddAgentToGroupInvite(UUID requestingAgentID, UUID inviteID, UUID groupID, UUID roleID, UUID agentID)
        {
        }

        public GroupInviteInfo GetAgentToGroupInvite(UUID requestingAgentID, UUID inviteID)
        {
            return null;
        }

        public void RemoveAgentToGroupInvite(UUID requestingAgentID, UUID inviteID)
        {
        }

        public void AddAgentToGroup(UUID requestingAgentID, UUID agentID, UUID groupID, UUID roleID)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: AddAgentToGroup, requestingAgentID {0}, agentID {1}, groupID {2}, roleID {3}", 
                requestingAgentID, agentID, groupID, roleID);

            XGroup group = GetXGroup(groupID, null);

            if (group == null)
                return;

            XGroupMember groupMember = new XGroupMember()
            {
                agentID = agentID,
                groupID = groupID,
                roleID = roleID
            };

            group.members[agentID] = groupMember;

            m_data.StoreGroup(group);
        }

        public void RemoveAgentFromGroup(UUID requestingAgentID, UUID AgentID, UUID GroupID)
        {
        }

        public void AddAgentToGroupRole(UUID requestingAgentID, UUID AgentID, UUID GroupID, UUID RoleID)
        {
        }

        public void RemoveAgentFromGroupRole(UUID requestingAgentID, UUID AgentID, UUID GroupID, UUID RoleID)
        {
        }

        public List<DirGroupsReplyData> FindGroups(UUID requestingAgentID, string search)
        {
            return null;
        }

        public GroupMembershipData GetAgentGroupMembership(UUID requestingAgentID, UUID AgentID, UUID GroupID)
        {
            return null;
        }

        public GroupMembershipData GetAgentActiveMembership(UUID requestingAgentID, UUID AgentID)
        {
            return null;
        }

        public List<GroupMembershipData> GetAgentGroupMemberships(UUID requestingAgentID, UUID AgentID)
        {
            return new List<GroupMembershipData>();
        }

        public List<GroupRolesData> GetAgentGroupRoles(UUID requestingAgentID, UUID AgentID, UUID GroupID)
        {
            return null;
        }

        public List<GroupRolesData> GetGroupRoles(UUID requestingAgentID, UUID GroupID)
        {
            return null;
        }

        public List<GroupMembersData> GetGroupMembers(UUID requestingAgentID, UUID groupID)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: GetGroupMembers, requestingAgentID {0}, groupID {1}",
                requestingAgentID, groupID);

            List<GroupMembersData> groupMembers = new List<GroupMembersData>();

            XGroup group = GetXGroup(groupID, null);

            if (group == null)
                return groupMembers;

            foreach (XGroupMember xgm in group.members.Values)
            {
                GroupMembersData gmd = new GroupMembersData();
                gmd.AgentID = xgm.agentID;
                gmd.IsOwner = group.founderID == gmd.AgentID;
                gmd.AcceptNotices = xgm.acceptNotices;
                gmd.ListInProfile = xgm.listInProfile;

                groupMembers.Add(gmd);
            }

            return groupMembers;
        }

        public List<GroupRoleMembersData> GetGroupRoleMembers(UUID requestingAgentID, UUID GroupID)
        {
            return null;
        }

        public List<GroupNoticeData> GetGroupNotices(UUID requestingAgentID, UUID groupID)
        {
            XGroup group = GetXGroup(groupID, null);

            if (group == null)
                return null;

            List<GroupNoticeData> notices = new List<GroupNoticeData>();

            foreach (XGroupNotice notice in group.notices.Values)
            {
                GroupNoticeData gnd = new GroupNoticeData()
                {
                    NoticeID = notice.noticeID,
                    Timestamp = notice.timestamp,
                    FromName = notice.fromName,
                    Subject = notice.subject,
                    HasAttachment = notice.hasAttachment,
                    AssetType = (byte)notice.assetType
                };

                notices.Add(gnd);
            }

            return notices;
        }
        
        public GroupNoticeInfo GetGroupNotice(UUID requestingAgentID, UUID noticeID)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: GetGroupNotices, requestingAgentID {0}, noticeID {1}",
                requestingAgentID, noticeID);

            // Yes, not an efficient way to do it.
            Dictionary<UUID, XGroup> groups = m_data.GetGroups();

            foreach (XGroup group in groups.Values)
            {
                if (group.notices.ContainsKey(noticeID))
                {
                    XGroupNotice n = group.notices[noticeID];

                    GroupNoticeInfo gni = new GroupNoticeInfo();
                    gni.GroupID = n.groupID;
                    gni.Message = n.message;
                    gni.BinaryBucket = n.binaryBucket;
                    gni.noticeData.NoticeID = n.noticeID;
                    gni.noticeData.Timestamp = n.timestamp;
                    gni.noticeData.FromName = n.fromName;
                    gni.noticeData.Subject = n.subject;
                    gni.noticeData.HasAttachment = n.hasAttachment;
                    gni.noticeData.AssetType = (byte)n.assetType;

                    return gni;
                }
            }
           
            return null;
        }
        
        public void AddGroupNotice(UUID requestingAgentID, UUID groupID, UUID noticeID, string fromName, string subject, string message, byte[] binaryBucket)
        {
            m_log.DebugFormat(
                "[MOCK GROUPS SERVICES CONNECTOR]: AddGroupNotice, requestingAgentID {0}, groupID {1}, noticeID {2}, fromName {3}, subject {4}, message {5}, binaryBucket.Length {6}", 
                requestingAgentID, groupID, noticeID, fromName, subject, message, binaryBucket.Length);

            XGroup group = GetXGroup(groupID, null);

            if (group == null)
                return;

            XGroupNotice groupNotice = new XGroupNotice()
            {
                groupID = groupID,
                noticeID = noticeID,
                fromName = fromName,
                subject = subject,
                message = message,
                timestamp = (uint)Util.UnixTimeSinceEpoch(),
                hasAttachment = false,
                assetType = 0,
                binaryBucket = binaryBucket
            };

            group.notices[noticeID] = groupNotice;

            m_data.StoreGroup(group);
        }

        public void ResetAgentGroupChatSessions(UUID agentID)
        {
        }

        public bool hasAgentBeenInvitedToGroupChatSession(UUID agentID, UUID groupID)
        {
            return false;
        }

        public bool hasAgentDroppedGroupChatSession(UUID agentID, UUID groupID)
        {
            return false;
        }

        public void AgentDroppedFromGroupChatSession(UUID agentID, UUID groupID)
        {
        }

        public void AgentInvitedToGroupChatSession(UUID agentID, UUID groupID)
        {
        }
    }
}