/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
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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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 *       notice, this list of conditions and the following disclaimer in the
 *       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.
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 * 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 System;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Timers;
using System.Xml;
using Timer=System.Timers.Timer;
using Nini.Config;
using NUnit.Framework;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Framework.Communications;
using OpenSim.Framework.Servers;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Region.CoreModules.Avatar.Attachments;
using OpenSim.Region.CoreModules.Framework;
using OpenSim.Region.CoreModules.Framework.EntityTransfer;
using OpenSim.Region.CoreModules.Framework.InventoryAccess;
using OpenSim.Region.CoreModules.Scripting.WorldComm;
using OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation;
using OpenSim.Region.CoreModules.World.Serialiser;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.ScriptEngine.Interfaces;
using OpenSim.Region.ScriptEngine.XEngine;
using OpenSim.Services.Interfaces;
using OpenSim.Tests.Common;

namespace OpenSim.Region.CoreModules.Avatar.Attachments.Tests
{
    /// <summary>
    /// Attachment tests
    /// </summary>
    [TestFixture]
    public class AttachmentsModuleTests : OpenSimTestCase
    {
        private AutoResetEvent m_chatEvent = new AutoResetEvent(false);
//        private OSChatMessage m_osChatMessageReceived;

        // Used to test whether the operations have fired the attach event.  Must be reset after each test.
        private int m_numberOfAttachEventsFired;

        [TestFixtureSetUp]
        public void FixtureInit()
        {
            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
            Util.FireAndForgetMethod = FireAndForgetMethod.None;
        }

        [TestFixtureTearDown]
        public void TearDown()
        {
            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
            // threads.  Possibly, later tests should be rewritten not to worry about such things.
            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
        }

        private void OnChatFromWorld(object sender, OSChatMessage oscm)
        {
//            Console.WriteLine("Got chat [{0}]", oscm.Message);

//            m_osChatMessageReceived = oscm;
            m_chatEvent.Set();
        }

        private Scene CreateTestScene()
        {
            IConfigSource config = new IniConfigSource();
            List<object> modules = new List<object>();

            AddCommonConfig(config, modules);

            Scene scene
                = new SceneHelpers().SetupScene(
                    "attachments-test-scene", TestHelpers.ParseTail(999), 1000, 1000, config);
            SceneHelpers.SetupSceneModules(scene, config, modules.ToArray());

            scene.EventManager.OnAttach += (localID, itemID, avatarID) => m_numberOfAttachEventsFired++;

            return scene;
        }

        private Scene CreateScriptingEnabledTestScene()
        {
            IConfigSource config = new IniConfigSource();
            List<object> modules = new List<object>();

            AddCommonConfig(config, modules);
            AddScriptingConfig(config, modules);

            Scene scene
                = new SceneHelpers().SetupScene(
                    "attachments-test-scene", TestHelpers.ParseTail(999), 1000, 1000, config);
            SceneHelpers.SetupSceneModules(scene, config, modules.ToArray());

            scene.StartScripts();

            return scene;
        }

        private void AddCommonConfig(IConfigSource config, List<object> modules)
        {
            config.AddConfig("Modules");
            config.Configs["Modules"].Set("InventoryAccessModule", "BasicInventoryAccessModule");

            AttachmentsModule attMod = new AttachmentsModule();
            attMod.DebugLevel = 1;
            modules.Add(attMod);
            modules.Add(new BasicInventoryAccessModule());
        }

        private void AddScriptingConfig(IConfigSource config, List<object> modules)
        {
            IConfig startupConfig = config.AddConfig("Startup");
            startupConfig.Set("DefaultScriptEngine", "XEngine");

            IConfig xEngineConfig = config.AddConfig("XEngine");
            xEngineConfig.Set("Enabled", "true");
            xEngineConfig.Set("StartDelay", "0");

            // These tests will not run with AppDomainLoading = true, at least on mono.  For unknown reasons, the call
            // to AssemblyResolver.OnAssemblyResolve fails.
            xEngineConfig.Set("AppDomainLoading", "false");

            modules.Add(new XEngine());

            // Necessary to stop serialization complaining
            // FIXME: Stop this being necessary if at all possible
//            modules.Add(new WorldCommModule());
        }

        /// <summary>
        /// Creates an attachment item in the given user's inventory.  Does not attach.
        /// </summary>
        /// <remarks>
        /// A user with the given ID and an inventory must already exist.
        /// </remarks>
        /// <returns>
        /// The attachment item.
        /// </returns>
        /// <param name='scene'></param>
        /// <param name='userId'></param>
        /// <param name='attName'></param>
        /// <param name='rawItemId'></param>
        /// <param name='rawAssetId'></param>
        private InventoryItemBase CreateAttachmentItem(
            Scene scene, UUID userId, string attName, int rawItemId, int rawAssetId)
        {
            return UserInventoryHelpers.CreateInventoryItem(
                scene,
                attName,
                TestHelpers.ParseTail(rawItemId),
                TestHelpers.ParseTail(rawAssetId),
                userId,
                InventoryType.Object);
        }

        [Test]
        public void TestAddAttachmentFromGround()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            m_numberOfAttachEventsFired = 0;

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);

            string attName = "att";

            SceneObjectGroup so = SceneHelpers.AddSceneObject(scene, attName, sp.UUID);
            Assert.That(so.Backup, Is.True);

            m_numberOfAttachEventsFired = 0;
            scene.AttachmentsModule.AttachObject(sp, so, (uint)AttachmentPoint.Chest, false, true, false);

            // Check status on scene presence
            Assert.That(sp.HasAttachments(), Is.True);
            List<SceneObjectGroup> attachments = sp.GetAttachments();
            Assert.That(attachments.Count, Is.EqualTo(1));
            SceneObjectGroup attSo = attachments[0];
            Assert.That(attSo.Name, Is.EqualTo(attName));
            Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.Chest));
            Assert.That(attSo.IsAttachment);
            Assert.That(attSo.UsesPhysics, Is.False);
            Assert.That(attSo.IsTemporary, Is.False);
            Assert.That(attSo.Backup, Is.False);

            // Check item status
            Assert.That(
                sp.Appearance.GetAttachpoint(attSo.FromItemID),
                Is.EqualTo((int)AttachmentPoint.Chest));

            InventoryItemBase attachmentItem = scene.InventoryService.GetItem(new InventoryItemBase(attSo.FromItemID));
            Assert.That(attachmentItem, Is.Not.Null);
            Assert.That(attachmentItem.Name, Is.EqualTo(attName));

            InventoryFolderBase targetFolder = scene.InventoryService.GetFolderForType(sp.UUID, AssetType.Object);
            Assert.That(attachmentItem.Folder, Is.EqualTo(targetFolder.ID));

            Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
        }

        [Test]
        public void TestWearAttachmentFromGround()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);

            SceneObjectGroup so2 = SceneHelpers.AddSceneObject(scene, "att2", sp.UUID);

            {
                SceneObjectGroup so = SceneHelpers.AddSceneObject(scene, "att1", sp.UUID);

                m_numberOfAttachEventsFired = 0;
                scene.AttachmentsModule.AttachObject(sp, so, (uint)AttachmentPoint.Default, false, true, false);

                // Check status on scene presence
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(so.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);
                Assert.That(attSo.UsesPhysics, Is.False);
                Assert.That(attSo.IsTemporary, Is.False);

                // Check item status
                Assert.That(
                    sp.Appearance.GetAttachpoint(attSo.FromItemID),
                    Is.EqualTo((int)AttachmentPoint.LeftHand));

                InventoryItemBase attachmentItem = scene.InventoryService.GetItem(new InventoryItemBase(attSo.FromItemID));
                Assert.That(attachmentItem, Is.Not.Null);
                Assert.That(attachmentItem.Name, Is.EqualTo(so.Name));

                InventoryFolderBase targetFolder = scene.InventoryService.GetFolderForType(sp.UUID, AssetType.Object);
                Assert.That(attachmentItem.Folder, Is.EqualTo(targetFolder.ID));

                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(2));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
            }

            // Test wearing a different attachment from the ground.
            {
                scene.AttachmentsModule.AttachObject(sp, so2, (uint)AttachmentPoint.Default, false, true, false);

                // Check status on scene presence
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(so2.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);
                Assert.That(attSo.UsesPhysics, Is.False);
                Assert.That(attSo.IsTemporary, Is.False);

                // Check item status
                Assert.That(
                    sp.Appearance.GetAttachpoint(attSo.FromItemID),
                    Is.EqualTo((int)AttachmentPoint.LeftHand));

                InventoryItemBase attachmentItem = scene.InventoryService.GetItem(new InventoryItemBase(attSo.FromItemID));
                Assert.That(attachmentItem, Is.Not.Null);
                Assert.That(attachmentItem.Name, Is.EqualTo(so2.Name));

                InventoryFolderBase targetFolder = scene.InventoryService.GetFolderForType(sp.UUID, AssetType.Object);
                Assert.That(attachmentItem.Folder, Is.EqualTo(targetFolder.ID));

                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(3));
            }

            // Test rewearing an already worn attachment from ground.  Nothing should happen.
            {
                scene.AttachmentsModule.AttachObject(sp, so2, (uint)AttachmentPoint.Default, false, true, false);

                // Check status on scene presence
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(so2.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);
                Assert.That(attSo.UsesPhysics, Is.False);
                Assert.That(attSo.IsTemporary, Is.False);

                // Check item status
                Assert.That(
                    sp.Appearance.GetAttachpoint(attSo.FromItemID),
                    Is.EqualTo((int)AttachmentPoint.LeftHand));

                InventoryItemBase attachmentItem = scene.InventoryService.GetItem(new InventoryItemBase(attSo.FromItemID));
                Assert.That(attachmentItem, Is.Not.Null);
                Assert.That(attachmentItem.Name, Is.EqualTo(so2.Name));

                InventoryFolderBase targetFolder = scene.InventoryService.GetFolderForType(sp.UUID, AssetType.Object);
                Assert.That(attachmentItem.Folder, Is.EqualTo(targetFolder.ID));

                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(3));
            }
        }

        /// <summary>
        /// Test that we do not attempt to attach an in-world object that someone else is sitting on.
        /// </summary>
        [Test]
        public void TestAddSatOnAttachmentFromGround()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            m_numberOfAttachEventsFired = 0;

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);

            string attName = "att";

            SceneObjectGroup so = SceneHelpers.AddSceneObject(scene, attName, sp.UUID);

            UserAccount ua2 = UserAccountHelpers.CreateUserWithInventory(scene, 0x2);
            ScenePresence sp2 = SceneHelpers.AddScenePresence(scene, ua2);

            // Put avatar within 10m of the prim so that sit doesn't fail.
            sp2.AbsolutePosition = new Vector3(0, 0, 0);
            sp2.HandleAgentRequestSit(sp2.ControllingClient, sp2.UUID, so.UUID, Vector3.Zero);

            scene.AttachmentsModule.AttachObject(sp, so, (uint)AttachmentPoint.Chest, false, true, false);

            Assert.That(sp.HasAttachments(), Is.False);
            Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(0));
        }

        [Test]
        public void TestRezAttachmentFromInventory()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1.PrincipalID);

            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            {
                scene.AttachmentsModule.RezSingleAttachmentFromInventory(
                    sp, attItem.ID, (uint)AttachmentPoint.Chest);

                // Check scene presence status
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(attItem.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.Chest));
                Assert.That(attSo.IsAttachment);
                Assert.That(attSo.UsesPhysics, Is.False);
                Assert.That(attSo.IsTemporary, Is.False);
                Assert.IsFalse(attSo.Backup);

                // Check appearance status
                Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(1));
                Assert.That(sp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));
                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
            }

            // Test attaching an already attached attachment
            {
                scene.AttachmentsModule.RezSingleAttachmentFromInventory(
                    sp, attItem.ID, (uint)AttachmentPoint.Chest);

                // Check scene presence status
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(attItem.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.Chest));
                Assert.That(attSo.IsAttachment);
                Assert.That(attSo.UsesPhysics, Is.False);
                Assert.That(attSo.IsTemporary, Is.False);

                // Check appearance status
                Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(1));
                Assert.That(sp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));
                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
            }
        }

        /// <summary>
        /// Test wearing an attachment from inventory, as opposed to explicit choosing the rez point
        /// </summary>
        [Test]
        public void TestWearAttachmentFromInventory()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1.PrincipalID);

            InventoryItemBase attItem1 = CreateAttachmentItem(scene, ua1.PrincipalID, "att1", 0x10, 0x20);
            InventoryItemBase attItem2 = CreateAttachmentItem(scene, ua1.PrincipalID, "att2", 0x11, 0x21);

            {
                m_numberOfAttachEventsFired = 0;
                scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, attItem1.ID, (uint)AttachmentPoint.Default);

                // default attachment point is currently the left hand.
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(attItem1.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);

                // Check appearance status
                Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(1));
                Assert.That(sp.Appearance.GetAttachpoint(attItem1.ID), Is.EqualTo((int)AttachmentPoint.LeftHand));
                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
            }

            // Test wearing a second attachment at the same position
            // Until multiple attachments at one point is implemented, this will remove the first attachment
            // This test relies on both attachments having the same default attachment point (in this case LeftHand 
            // since none other has been set).
            {
                scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, attItem2.ID, (uint)AttachmentPoint.Default);

                // default attachment point is currently the left hand.
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(attItem2.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);

                // Check appearance status
                Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(1));
                Assert.That(sp.Appearance.GetAttachpoint(attItem2.ID), Is.EqualTo((int)AttachmentPoint.LeftHand));
                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(3));
            }

            // Test wearing an already attached attachment
            {
                scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, attItem2.ID, (uint)AttachmentPoint.Default);

                // default attachment point is currently the left hand.
                Assert.That(sp.HasAttachments(), Is.True);
                List<SceneObjectGroup> attachments = sp.GetAttachments();
                Assert.That(attachments.Count, Is.EqualTo(1));
                SceneObjectGroup attSo = attachments[0];
                Assert.That(attSo.Name, Is.EqualTo(attItem2.Name));
                Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.LeftHand));
                Assert.That(attSo.IsAttachment);

                // Check appearance status
                Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(1));
                Assert.That(sp.Appearance.GetAttachpoint(attItem2.ID), Is.EqualTo((int)AttachmentPoint.LeftHand));
                Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

                // Check events
                Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(3));
            }
        }

        /// <summary>
        /// Test specific conditions associated with rezzing a scripted attachment from inventory.
        /// </summary>
        [Test]
        public void TestRezScriptedAttachmentFromInventory()
        {
            TestHelpers.InMethod();

            Scene scene = CreateScriptingEnabledTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);

            SceneObjectGroup so = SceneHelpers.CreateSceneObject(1, sp.UUID, "att-name", 0x10);
            TaskInventoryItem scriptItem
                = TaskInventoryHelpers.AddScript(
                    scene,
                    so.RootPart,
                    "scriptItem",
                    "default { attach(key id) { if (id != NULL_KEY) { llSay(0, \"Hello World\"); } } }");

            InventoryItemBase userItem = UserInventoryHelpers.AddInventoryItem(scene, so, 0x100, 0x1000);

            // FIXME: Right now, we have to do a tricksy chat listen to make sure we know when the script is running.
            // In the future, we need to be able to do this programatically more predicably.
            scene.EventManager.OnChatFromWorld += OnChatFromWorld;

            scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest);

            m_chatEvent.WaitOne(60000);

            // TODO: Need to have a test that checks the script is actually started but this involves a lot more
            // plumbing of the script engine and either pausing for events or more infrastructure to turn off various
            // script engine delays/asychronicity that isn't helpful in an automated regression testing context.
            SceneObjectGroup attSo = scene.GetSceneObjectGroup(so.Name);
            Assert.That(attSo.ContainsScripts(), Is.True);

            TaskInventoryItem reRezzedScriptItem = attSo.RootPart.Inventory.GetInventoryItem(scriptItem.Name);
            IScriptModule xengine = scene.RequestModuleInterface<IScriptModule>();
            Assert.That(xengine.GetScriptState(reRezzedScriptItem.ItemID), Is.True);
        }

        [Test]
        public void TestDetachAttachmentToGround()
        {
            TestHelpers.InMethod();
//            log4net.Config.XmlConfigurator.Configure();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1.PrincipalID);

            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            ISceneEntity so
                = scene.AttachmentsModule.RezSingleAttachmentFromInventory(
                    sp, attItem.ID, (uint)AttachmentPoint.Chest);

            m_numberOfAttachEventsFired = 0;
            scene.AttachmentsModule.DetachSingleAttachmentToGround(sp, so.LocalId);

            // Check scene presence status
            Assert.That(sp.HasAttachments(), Is.False);
            List<SceneObjectGroup> attachments = sp.GetAttachments();
            Assert.That(attachments.Count, Is.EqualTo(0));

            // Check appearance status
            Assert.That(sp.Appearance.GetAttachments().Count, Is.EqualTo(0));

            // Check item status
            Assert.That(scene.InventoryService.GetItem(new InventoryItemBase(attItem.ID)), Is.Null);

            // Check object in scene
            SceneObjectGroup soInScene = scene.GetSceneObjectGroup("att");
            Assert.That(soInScene, Is.Not.Null);
            Assert.IsTrue(soInScene.Backup);

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
        }

        [Test]
        public void TestDetachAttachmentToInventory()
        {
            TestHelpers.InMethod();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1.PrincipalID);

            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            SceneObjectGroup so
                = (SceneObjectGroup)scene.AttachmentsModule.RezSingleAttachmentFromInventory(
                    sp, attItem.ID, (uint)AttachmentPoint.Chest);

            m_numberOfAttachEventsFired = 0;
            scene.AttachmentsModule.DetachSingleAttachmentToInv(sp, so);

            // Check status on scene presence
            Assert.That(sp.HasAttachments(), Is.False);
            List<SceneObjectGroup> attachments = sp.GetAttachments();
            Assert.That(attachments.Count, Is.EqualTo(0));

            // Check item status
            Assert.That(sp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo(0));

            Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(0));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
        }

        /// <summary>
        /// Test specific conditions associated with detaching a scripted attachment from inventory.
        /// </summary>
        [Test]
        public void TestDetachScriptedAttachmentToInventory()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            Scene scene = CreateScriptingEnabledTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);

            SceneObjectGroup so = SceneHelpers.CreateSceneObject(1, sp.UUID, "att-name", 0x10);
            TaskInventoryItem scriptTaskItem
                = TaskInventoryHelpers.AddScript(
                    scene,
                    so.RootPart,
                    "scriptItem",
                    "default { attach(key id) { if (id != NULL_KEY) { llSay(0, \"Hello World\"); } } }");

            InventoryItemBase userItem = UserInventoryHelpers.AddInventoryItem(scene, so, 0x100, 0x1000);

            // FIXME: Right now, we have to do a tricksy chat listen to make sure we know when the script is running.
            // In the future, we need to be able to do this programatically more predicably.
            scene.EventManager.OnChatFromWorld += OnChatFromWorld;

            SceneObjectGroup rezzedSo
                = scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest);

            // Wait for chat to signal rezzed script has been started.
            m_chatEvent.WaitOne(60000);

            scene.AttachmentsModule.DetachSingleAttachmentToInv(sp, rezzedSo);

            InventoryItemBase userItemUpdated = scene.InventoryService.GetItem(userItem);
            AssetBase asset = scene.AssetService.Get(userItemUpdated.AssetID.ToString());

            // TODO: It would probably be better here to check script state via the saving and retrieval of state
            // information at a higher level, rather than having to inspect the serialization.
            XmlDocument soXml = new XmlDocument();
            soXml.LoadXml(Encoding.UTF8.GetString(asset.Data));

            XmlNodeList scriptStateNodes = soXml.GetElementsByTagName("ScriptState");
            Assert.That(scriptStateNodes.Count, Is.EqualTo(1));

            // Re-rez the attachment to check script running state
            SceneObjectGroup reRezzedSo = scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest);

            // Wait for chat to signal rezzed script has been started.
            m_chatEvent.WaitOne(60000);

            TaskInventoryItem reRezzedScriptItem = reRezzedSo.RootPart.Inventory.GetInventoryItem(scriptTaskItem.Name);
            IScriptModule xengine = scene.RequestModuleInterface<IScriptModule>();
            Assert.That(xengine.GetScriptState(reRezzedScriptItem.ItemID), Is.True);

//            Console.WriteLine(soXml.OuterXml);
        }

        /// <summary>
        /// Test that attachments don't hang about in the scene when the agent is closed
        /// </summary>
        [Test]
        public void TestRemoveAttachmentsOnAvatarExit()
        {
            TestHelpers.InMethod();
//            log4net.Config.XmlConfigurator.Configure();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            AgentCircuitData acd = SceneHelpers.GenerateAgentData(ua1.PrincipalID);
            acd.Appearance = new AvatarAppearance();
            acd.Appearance.SetAttachment((int)AttachmentPoint.Chest, attItem.ID, attItem.AssetID);
            ScenePresence presence = SceneHelpers.AddScenePresence(scene, acd);

            SceneObjectGroup rezzedAtt = presence.GetAttachments()[0];

            m_numberOfAttachEventsFired = 0;
            scene.CloseAgent(presence.UUID, false);

            // Check that we can't retrieve this attachment from the scene.
            Assert.That(scene.GetSceneObjectGroup(rezzedAtt.UUID), Is.Null);

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(0));
        }

        [Test]
        public void TestRezAttachmentsOnAvatarEntrance()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            AgentCircuitData acd = SceneHelpers.GenerateAgentData(ua1.PrincipalID);
            acd.Appearance = new AvatarAppearance();
            acd.Appearance.SetAttachment((int)AttachmentPoint.Chest, attItem.ID, attItem.AssetID);

            m_numberOfAttachEventsFired = 0;
            ScenePresence presence = SceneHelpers.AddScenePresence(scene, acd);

            Assert.That(presence.HasAttachments(), Is.True);
            List<SceneObjectGroup> attachments = presence.GetAttachments();

            Assert.That(attachments.Count, Is.EqualTo(1));
            SceneObjectGroup attSo = attachments[0];
            Assert.That(attSo.Name, Is.EqualTo(attItem.Name));
            Assert.That(attSo.AttachmentPoint, Is.EqualTo((byte)AttachmentPoint.Chest));
            Assert.That(attSo.IsAttachment);
            Assert.That(attSo.UsesPhysics, Is.False);
            Assert.That(attSo.IsTemporary, Is.False);
            Assert.IsFalse(attSo.Backup);

            // Check appearance status
            List<AvatarAttachment> retreivedAttachments = presence.Appearance.GetAttachments();
            Assert.That(retreivedAttachments.Count, Is.EqualTo(1));
            Assert.That(retreivedAttachments[0].AttachPoint, Is.EqualTo((int)AttachmentPoint.Chest));
            Assert.That(retreivedAttachments[0].ItemID, Is.EqualTo(attItem.ID));
            Assert.That(retreivedAttachments[0].AssetID, Is.EqualTo(attItem.AssetID));
            Assert.That(presence.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));

            Assert.That(scene.GetSceneObjectGroups().Count, Is.EqualTo(1));

            // Check events.  We expect OnAttach to fire on login.
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(1));
        }

        [Test]
        public void TestUpdateAttachmentPosition()
        {
            TestHelpers.InMethod();

            Scene scene = CreateTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
            InventoryItemBase attItem = CreateAttachmentItem(scene, ua1.PrincipalID, "att", 0x10, 0x20);

            AgentCircuitData acd = SceneHelpers.GenerateAgentData(ua1.PrincipalID);
            acd.Appearance = new AvatarAppearance();
            acd.Appearance.SetAttachment((int)AttachmentPoint.Chest, attItem.ID, attItem.AssetID);
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, acd);

            SceneObjectGroup attSo = sp.GetAttachments()[0];

            Vector3 newPosition = new Vector3(1, 2, 4);

            m_numberOfAttachEventsFired = 0;
            scene.SceneGraph.UpdatePrimGroupPosition(attSo.LocalId, newPosition, sp.ControllingClient);

            Assert.That(attSo.AbsolutePosition, Is.EqualTo(sp.AbsolutePosition));
            Assert.That(attSo.RootPart.AttachedPos, Is.EqualTo(newPosition));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(0));
        }

        [Test]
        public void TestSameSimulatorNeighbouringRegionsTeleportV1()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            BaseHttpServer httpServer = new BaseHttpServer(99999);
            MainServer.AddHttpServer(httpServer);
            MainServer.Instance = httpServer;

            AttachmentsModule attModA = new AttachmentsModule();
            AttachmentsModule attModB = new AttachmentsModule();
            EntityTransferModule etmA = new EntityTransferModule();
            EntityTransferModule etmB = new EntityTransferModule();
            LocalSimulationConnectorModule lscm = new LocalSimulationConnectorModule();

            IConfigSource config = new IniConfigSource();
            IConfig modulesConfig = config.AddConfig("Modules");
            modulesConfig.Set("EntityTransferModule", etmA.Name);
            modulesConfig.Set("SimulationServices", lscm.Name);
            IConfig entityTransferConfig = config.AddConfig("EntityTransfer");

            // In order to run a single threaded regression test we do not want the entity transfer module waiting
            // for a callback from the destination scene before removing its avatar data.
            entityTransferConfig.Set("wait_for_callback", false);

            modulesConfig.Set("InventoryAccessModule", "BasicInventoryAccessModule");

            SceneHelpers sh = new SceneHelpers();
            TestScene sceneA = sh.SetupScene("sceneA", TestHelpers.ParseTail(0x100), 1000, 1000);
            TestScene sceneB = sh.SetupScene("sceneB", TestHelpers.ParseTail(0x200), 1001, 1000);

            SceneHelpers.SetupSceneModules(new Scene[] { sceneA, sceneB }, config, lscm);
            SceneHelpers.SetupSceneModules(
                sceneA, config, new CapabilitiesModule(), etmA, attModA, new BasicInventoryAccessModule());
            SceneHelpers.SetupSceneModules(
                sceneB, config, new CapabilitiesModule(), etmB, attModB, new BasicInventoryAccessModule());

            // FIXME: Hack - this is here temporarily to revert back to older entity transfer behaviour
            lscm.ServiceVersion = "SIMULATION/0.1";

            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(sceneA, 0x1);

            AgentCircuitData acd = SceneHelpers.GenerateAgentData(ua1.PrincipalID);
            TestClient tc = new TestClient(acd, sceneA);
            List<TestClient> destinationTestClients = new List<TestClient>();
            EntityTransferHelpers.SetupInformClientOfNeighbourTriggersNeighbourClientCreate(tc, destinationTestClients);

            ScenePresence beforeTeleportSp = SceneHelpers.AddScenePresence(sceneA, tc, acd);
            beforeTeleportSp.AbsolutePosition = new Vector3(30, 31, 32);

            InventoryItemBase attItem = CreateAttachmentItem(sceneA, ua1.PrincipalID, "att", 0x10, 0x20);

            sceneA.AttachmentsModule.RezSingleAttachmentFromInventory(
                beforeTeleportSp, attItem.ID, (uint)AttachmentPoint.Chest);

            Vector3 teleportPosition = new Vector3(10, 11, 12);
            Vector3 teleportLookAt = new Vector3(20, 21, 22);

            m_numberOfAttachEventsFired = 0;
            sceneA.RequestTeleportLocation(
                beforeTeleportSp.ControllingClient,
                sceneB.RegionInfo.RegionHandle,
                teleportPosition,
                teleportLookAt,
                (uint)TeleportFlags.ViaLocation);

            destinationTestClients[0].CompleteMovement();

            // Check attachments have made it into sceneB
            ScenePresence afterTeleportSceneBSp = sceneB.GetScenePresence(ua1.PrincipalID);

            // This is appearance data, as opposed to actually rezzed attachments
            List<AvatarAttachment> sceneBAttachments = afterTeleportSceneBSp.Appearance.GetAttachments();
            Assert.That(sceneBAttachments.Count, Is.EqualTo(1));
            Assert.That(sceneBAttachments[0].AttachPoint, Is.EqualTo((int)AttachmentPoint.Chest));
            Assert.That(sceneBAttachments[0].ItemID, Is.EqualTo(attItem.ID));
            Assert.That(sceneBAttachments[0].AssetID, Is.EqualTo(attItem.AssetID));
            Assert.That(afterTeleportSceneBSp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));

            // This is the actual attachment
            List<SceneObjectGroup> actualSceneBAttachments = afterTeleportSceneBSp.GetAttachments();
            Assert.That(actualSceneBAttachments.Count, Is.EqualTo(1));
            SceneObjectGroup actualSceneBAtt = actualSceneBAttachments[0];
            Assert.That(actualSceneBAtt.Name, Is.EqualTo(attItem.Name));
            Assert.That(actualSceneBAtt.AttachmentPoint, Is.EqualTo((uint)AttachmentPoint.Chest));
            Assert.IsFalse(actualSceneBAtt.Backup);

            Assert.That(sceneB.GetSceneObjectGroups().Count, Is.EqualTo(1));

            // Check attachments have been removed from sceneA
            ScenePresence afterTeleportSceneASp = sceneA.GetScenePresence(ua1.PrincipalID);

            // Since this is appearance data, it is still present on the child avatar!
            List<AvatarAttachment> sceneAAttachments = afterTeleportSceneASp.Appearance.GetAttachments();
            Assert.That(sceneAAttachments.Count, Is.EqualTo(1));
            Assert.That(afterTeleportSceneASp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));

            // This is the actual attachment, which should no longer exist
            List<SceneObjectGroup> actualSceneAAttachments = afterTeleportSceneASp.GetAttachments();
            Assert.That(actualSceneAAttachments.Count, Is.EqualTo(0));

            Assert.That(sceneA.GetSceneObjectGroups().Count, Is.EqualTo(0));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(0));
        }

        [Test]
        public void TestSameSimulatorNeighbouringRegionsTeleportV2()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            BaseHttpServer httpServer = new BaseHttpServer(99999);
            MainServer.AddHttpServer(httpServer);
            MainServer.Instance = httpServer;

            AttachmentsModule attModA = new AttachmentsModule();
            AttachmentsModule attModB = new AttachmentsModule();
            EntityTransferModule etmA = new EntityTransferModule();
            EntityTransferModule etmB = new EntityTransferModule();
            LocalSimulationConnectorModule lscm = new LocalSimulationConnectorModule();

            IConfigSource config = new IniConfigSource();
            IConfig modulesConfig = config.AddConfig("Modules");
            modulesConfig.Set("EntityTransferModule", etmA.Name);
            modulesConfig.Set("SimulationServices", lscm.Name);

            modulesConfig.Set("InventoryAccessModule", "BasicInventoryAccessModule");

            SceneHelpers sh = new SceneHelpers();
            TestScene sceneA = sh.SetupScene("sceneA", TestHelpers.ParseTail(0x100), 1000, 1000);
            TestScene sceneB = sh.SetupScene("sceneB", TestHelpers.ParseTail(0x200), 1001, 1000);

            SceneHelpers.SetupSceneModules(new Scene[] { sceneA, sceneB }, config, lscm);
            SceneHelpers.SetupSceneModules(
                sceneA, config, new CapabilitiesModule(), etmA, attModA, new BasicInventoryAccessModule());
            SceneHelpers.SetupSceneModules(
                sceneB, config, new CapabilitiesModule(), etmB, attModB, new BasicInventoryAccessModule());

            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(sceneA, 0x1);

            AgentCircuitData acd = SceneHelpers.GenerateAgentData(ua1.PrincipalID);
            TestClient tc = new TestClient(acd, sceneA);
            List<TestClient> destinationTestClients = new List<TestClient>();
            EntityTransferHelpers.SetupInformClientOfNeighbourTriggersNeighbourClientCreate(tc, destinationTestClients);

            ScenePresence beforeTeleportSp = SceneHelpers.AddScenePresence(sceneA, tc, acd);
            beforeTeleportSp.AbsolutePosition = new Vector3(30, 31, 32);

            Assert.That(destinationTestClients.Count, Is.EqualTo(1));
            Assert.That(destinationTestClients[0], Is.Not.Null);

            InventoryItemBase attItem = CreateAttachmentItem(sceneA, ua1.PrincipalID, "att", 0x10, 0x20);

            sceneA.AttachmentsModule.RezSingleAttachmentFromInventory(
                beforeTeleportSp, attItem.ID, (uint)AttachmentPoint.Chest);

            Vector3 teleportPosition = new Vector3(10, 11, 12);
            Vector3 teleportLookAt = new Vector3(20, 21, 22);

            // Here, we need to make clientA's receipt of SendRegionTeleport trigger clientB's CompleteMovement().  This
            // is to operate the teleport V2 mechanism where the EntityTransferModule will first request the client to
            // CompleteMovement to the region and then call UpdateAgent to the destination region to confirm the receipt
            // Both these operations will occur on different threads and will wait for each other.
            // We have to do this via ThreadPool directly since FireAndForget has been switched to sync for the V1
            // test protocol, where we are trying to avoid unpredictable async operations in regression tests.
            tc.OnTestClientSendRegionTeleport 
                += (regionHandle, simAccess, regionExternalEndPoint, locationID, flags, capsURL) 
                    => ThreadPool.UnsafeQueueUserWorkItem(o => destinationTestClients[0].CompleteMovement(), null);

            m_numberOfAttachEventsFired = 0;
            sceneA.RequestTeleportLocation(
                beforeTeleportSp.ControllingClient,
                sceneB.RegionInfo.RegionHandle,
                teleportPosition,
                teleportLookAt,
                (uint)TeleportFlags.ViaLocation);

            // Check attachments have made it into sceneB
            ScenePresence afterTeleportSceneBSp = sceneB.GetScenePresence(ua1.PrincipalID);

            // This is appearance data, as opposed to actually rezzed attachments
            List<AvatarAttachment> sceneBAttachments = afterTeleportSceneBSp.Appearance.GetAttachments();
            Assert.That(sceneBAttachments.Count, Is.EqualTo(1));
            Assert.That(sceneBAttachments[0].AttachPoint, Is.EqualTo((int)AttachmentPoint.Chest));
            Assert.That(sceneBAttachments[0].ItemID, Is.EqualTo(attItem.ID));
            Assert.That(sceneBAttachments[0].AssetID, Is.EqualTo(attItem.AssetID));
            Assert.That(afterTeleportSceneBSp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));

            // This is the actual attachment
            List<SceneObjectGroup> actualSceneBAttachments = afterTeleportSceneBSp.GetAttachments();
            Assert.That(actualSceneBAttachments.Count, Is.EqualTo(1));
            SceneObjectGroup actualSceneBAtt = actualSceneBAttachments[0];
            Assert.That(actualSceneBAtt.Name, Is.EqualTo(attItem.Name));
            Assert.That(actualSceneBAtt.AttachmentPoint, Is.EqualTo((uint)AttachmentPoint.Chest));
            Assert.IsFalse(actualSceneBAtt.Backup);

            Assert.That(sceneB.GetSceneObjectGroups().Count, Is.EqualTo(1));

            // Check attachments have been removed from sceneA
            ScenePresence afterTeleportSceneASp = sceneA.GetScenePresence(ua1.PrincipalID);

            // Since this is appearance data, it is still present on the child avatar!
            List<AvatarAttachment> sceneAAttachments = afterTeleportSceneASp.Appearance.GetAttachments();
            Assert.That(sceneAAttachments.Count, Is.EqualTo(1));
            Assert.That(afterTeleportSceneASp.Appearance.GetAttachpoint(attItem.ID), Is.EqualTo((int)AttachmentPoint.Chest));

            // This is the actual attachment, which should no longer exist
            List<SceneObjectGroup> actualSceneAAttachments = afterTeleportSceneASp.GetAttachments();
            Assert.That(actualSceneAAttachments.Count, Is.EqualTo(0));

            Assert.That(sceneA.GetSceneObjectGroups().Count, Is.EqualTo(0));

            // Check events
            Assert.That(m_numberOfAttachEventsFired, Is.EqualTo(0));
        }
    }
}