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using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Threading;
using NUnit.Framework;
using NUnit.Framework.SyntaxHelpers;
using OpenMetaverse;
using OpenSim.Data;
using OpenSim.Framework;
using OpenSim.Framework.Serialization;
using OpenSim.Framework.Serialization.External;
using OpenSim.Framework.Communications;
using OpenSim.Framework.Communications.Osp;
using OpenSim.Region.CoreModules.Avatar.Inventory.Archiver;
using OpenSim.Region.CoreModules.World.Serialiser;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Region.Framework.Scenes.Serialization;
using OpenSim.Services.Interfaces;
using OpenSim.Tests.Common;
using OpenSim.Tests.Common.Mock;
using OpenSim.Tests.Common.Setup;

namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver.Tests
{
    [TestFixture]
    public class InventoryArchiverTests
    {
        protected ManualResetEvent mre = new ManualResetEvent(false);
        
        private void InventoryReceived(UUID userId)
        {
            lock (this)
            {
                Monitor.PulseAll(this);
            }
        }
        
        private void SaveCompleted(
            Guid id, bool succeeded, UserAccount userInfo, string invPath, Stream saveStream, 
            Exception reportedException)
        {
            mre.Set();
        }

        /// <summary>
        /// Test saving a V0.1 OpenSim Inventory Archive (subject to change since there is no fixed format yet).
        /// </summary>
        // Commenting for now! The mock inventory service needs more beef, at least for
        // GetFolderForType
        // REFACTORING PROBLEM. This needs to be rewritten.
        [Test]
        public void TestSaveIarV0_1()
        {
            TestHelper.InMethod();
            log4net.Config.XmlConfigurator.Configure();

            InventoryArchiverModule archiverModule = new InventoryArchiverModule(true);

            Scene scene = SceneSetupHelpers.SetupScene("Inventory, useraccounts");
            SceneSetupHelpers.SetupSceneModules(scene, archiverModule);

            // Create user
            string userFirstName = "Jock";
            string userLastName = "Stirrup";
            string userPassword = "troll";
            UUID userId = UUID.Parse("00000000-0000-0000-0000-000000000020");
            UserProfileTestUtils.CreateUserWithInventory(scene, userFirstName, userLastName, userId, userPassword);
            
            // Create asset
            SceneObjectGroup object1;
            SceneObjectPart part1;
            {
                string partName = "My Little Dog Object";
                UUID ownerId = UUID.Parse("00000000-0000-0000-0000-000000000040");
                PrimitiveBaseShape shape = PrimitiveBaseShape.CreateSphere();
                Vector3 groupPosition = new Vector3(10, 20, 30);
                Quaternion rotationOffset = new Quaternion(20, 30, 40, 50);
                Vector3 offsetPosition = new Vector3(5, 10, 15);

                part1
                    = new SceneObjectPart(
                        ownerId, shape, groupPosition, rotationOffset, offsetPosition);
                part1.Name = partName;

                object1 = new SceneObjectGroup(part1);
                scene.AddNewSceneObject(object1, false);
            }

            UUID asset1Id = UUID.Parse("00000000-0000-0000-0000-000000000060");
            AssetBase asset1 = AssetHelpers.CreateAsset(asset1Id, object1);
            scene.AssetService.Store(asset1);

            // Create item
            UUID item1Id = UUID.Parse("00000000-0000-0000-0000-000000000080");
            InventoryItemBase item1 = new InventoryItemBase();
            item1.Name = "My Little Dog";
            item1.AssetID = asset1.FullID;
            item1.ID = item1Id;
            InventoryFolderBase objsFolder 
                = InventoryArchiveUtils.FindFolderByPath(scene.InventoryService, userId, "Objects");
            item1.Folder = objsFolder.ID;
            scene.AddInventoryItem(userId, item1);

            MemoryStream archiveWriteStream = new MemoryStream();
            archiverModule.OnInventoryArchiveSaved += SaveCompleted;

            mre.Reset();
            archiverModule.ArchiveInventory(
                Guid.NewGuid(), userFirstName, userLastName, "Objects", userPassword, archiveWriteStream);
            mre.WaitOne(60000, false);

            byte[] archive = archiveWriteStream.ToArray();
            MemoryStream archiveReadStream = new MemoryStream(archive);
            TarArchiveReader tar = new TarArchiveReader(archiveReadStream);

            //bool gotControlFile = false;
            bool gotObject1File = false;
            //bool gotObject2File = false;
            string expectedObject1FileName = InventoryArchiveWriteRequest.CreateArchiveItemName(item1);
            string expectedObject1FilePath = string.Format(
                "{0}{1}{2}",
                ArchiveConstants.INVENTORY_PATH,
                InventoryArchiveWriteRequest.CreateArchiveFolderName(objsFolder),
                expectedObject1FileName);

            string filePath;
            TarArchiveReader.TarEntryType tarEntryType;

//            Console.WriteLine("Reading archive");
            
            while (tar.ReadEntry(out filePath, out tarEntryType) != null)
            {
                Console.WriteLine("Got {0}", filePath);

//                if (ArchiveConstants.CONTROL_FILE_PATH == filePath)
//                {
//                    gotControlFile = true;
//                }
                
                if (filePath.StartsWith(ArchiveConstants.INVENTORY_PATH) && filePath.EndsWith(".xml"))
                {
//                    string fileName = filePath.Remove(0, "Objects/".Length);
//
//                    if (fileName.StartsWith(part1.Name))
//                    {
                        Assert.That(expectedObject1FilePath, Is.EqualTo(filePath));
                        gotObject1File = true;
//                    }
//                    else if (fileName.StartsWith(part2.Name))
//                    {
//                        Assert.That(fileName, Is.EqualTo(expectedObject2FileName));
//                        gotObject2File = true;
//                    }
                }
            }

//            Assert.That(gotControlFile, Is.True, "No control file in archive");
            Assert.That(gotObject1File, Is.True, "No item1 file in archive");
//            Assert.That(gotObject2File, Is.True, "No object2 file in archive");

            // TODO: Test presence of more files and contents of files.
        }
        
        /// <summary>
        /// Test loading a V0.1 OpenSim Inventory Archive (subject to change since there is no fixed format yet) where
        /// an account exists with the creator name.
        /// </summary>
        ///
        /// This test also does some deeper probing of loading into nested inventory structures
        /// REFACTORING PROBLEM. This needs to be rewritten.
//        [Test]
//        public void TestLoadIarV0_1ExistingUsers()
//        {
//            TestHelper.InMethod();
            
//            //log4net.Config.XmlConfigurator.Configure();
            
//            string userFirstName = "Mr";
//            string userLastName = "Tiddles";
//            UUID userUuid = UUID.Parse("00000000-0000-0000-0000-000000000555");
//            string userItemCreatorFirstName = "Lord";
//            string userItemCreatorLastName = "Lucan";
//            UUID userItemCreatorUuid = UUID.Parse("00000000-0000-0000-0000-000000000666");
            
//            string item1Name = "b.lsl";
//            string archiveItemName = InventoryArchiveWriteRequest.CreateArchiveItemName(item1Name, UUID.Random());

//            MemoryStream archiveWriteStream = new MemoryStream();
//            TarArchiveWriter tar = new TarArchiveWriter(archiveWriteStream);

//            InventoryItemBase item1 = new InventoryItemBase();
//            item1.Name = item1Name;
//            item1.AssetID = UUID.Random();
//            item1.GroupID = UUID.Random();
//            item1.CreatorId = OspResolver.MakeOspa(userItemCreatorFirstName, userItemCreatorLastName);
//            //item1.CreatorId = userUuid.ToString();
//            //item1.CreatorId = "00000000-0000-0000-0000-000000000444";
//            item1.Owner = UUID.Zero;
            
//            string item1FileName 
//                = string.Format("{0}{1}", ArchiveConstants.INVENTORY_PATH, archiveItemName);
//            tar.WriteFile(item1FileName, UserInventoryItemSerializer.Serialize(item1));
//            tar.Close();

//            MemoryStream archiveReadStream = new MemoryStream(archiveWriteStream.ToArray());
//            SerialiserModule serialiserModule = new SerialiserModule();
//            InventoryArchiverModule archiverModule = new InventoryArchiverModule(true);
            
//            // Annoyingly, we have to set up a scene even though inventory loading has nothing to do with a scene
//            Scene scene = SceneSetupHelpers.SetupScene("inventory");
//            IUserAdminService userAdminService = scene.CommsManager.UserAdminService;
            
//            SceneSetupHelpers.SetupSceneModules(scene, serialiserModule, archiverModule);
//            userAdminService.AddUser(
//                userFirstName, userLastName, "meowfood", String.Empty, 1000, 1000, userUuid);
//            userAdminService.AddUser(
//                userItemCreatorFirstName, userItemCreatorLastName, "hampshire", 
//                String.Empty, 1000, 1000, userItemCreatorUuid);
            
//            archiverModule.DearchiveInventory(userFirstName, userLastName, "/", "meowfood", archiveReadStream);

//            CachedUserInfo userInfo 
//                = scene.CommsManager.UserProfileCacheService.GetUserDetails(userFirstName, userLastName);

//            InventoryItemBase foundItem1
//                = InventoryArchiveUtils.FindItemByPath(scene.InventoryService, userInfo.UserProfile.ID, item1Name);
            
//            Assert.That(foundItem1, Is.Not.Null, "Didn't find loaded item 1");

//// We have to disable this check since loaded items that did find users via OSPA resolution are now only storing the
//// UUID, not the OSPA itself.
////            Assert.That(
////                foundItem1.CreatorId, Is.EqualTo(item1.CreatorId), 
////                "Loaded item non-uuid creator doesn't match original");
//            Assert.That(
//                foundItem1.CreatorId, Is.EqualTo(userItemCreatorUuid.ToString()), 
//                "Loaded item non-uuid creator doesn't match original");
            
//            Assert.That(
//                foundItem1.CreatorIdAsUuid, Is.EqualTo(userItemCreatorUuid), 
//                "Loaded item uuid creator doesn't match original");
//            Assert.That(foundItem1.Owner, Is.EqualTo(userUuid),
//                "Loaded item owner doesn't match inventory reciever");

//            // Now try loading to a root child folder
//            UserInventoryTestUtils.CreateInventoryFolder(scene.InventoryService, userInfo.UserProfile.ID, "xA");
//            archiveReadStream = new MemoryStream(archiveReadStream.ToArray());
//            archiverModule.DearchiveInventory(userFirstName, userLastName, "xA", "meowfood", archiveReadStream);

//            InventoryItemBase foundItem2
//                = InventoryArchiveUtils.FindItemByPath(scene.InventoryService, userInfo.UserProfile.ID, "xA/" + item1Name);
//            Assert.That(foundItem2, Is.Not.Null, "Didn't find loaded item 2");

//            // Now try loading to a more deeply nested folder
//            UserInventoryTestUtils.CreateInventoryFolder(scene.InventoryService, userInfo.UserProfile.ID, "xB/xC");
//            archiveReadStream = new MemoryStream(archiveReadStream.ToArray());
//            archiverModule.DearchiveInventory(userFirstName, userLastName, "xB/xC", "meowfood", archiveReadStream);

//            InventoryItemBase foundItem3
//                = InventoryArchiveUtils.FindItemByPath(scene.InventoryService, userInfo.UserProfile.ID, "xB/xC/" + item1Name);
//            Assert.That(foundItem3, Is.Not.Null, "Didn't find loaded item 3");
        //}

        // REFACTORING PROBLEM. Needs rewrite.
//        [Test]
//        public void TestIarV0_1WithEscapedChars()
//        {
//            TestHelper.InMethod();
////            log4net.Config.XmlConfigurator.Configure();

//            string itemName = "You & you are a mean/man/";
//            string humanEscapedItemName = @"You & you are a mean\/man\/";
//            string userPassword = "meowfood";

//            InventoryArchiverModule archiverModule = new InventoryArchiverModule(true);

//            Scene scene = SceneSetupHelpers.SetupScene("Inventory");
//            SceneSetupHelpers.SetupSceneModules(scene, archiverModule);
//            CommunicationsManager cm = scene.CommsManager;

//            // Create user
//            string userFirstName = "Jock";
//            string userLastName = "Stirrup";
//            UUID userId = UUID.Parse("00000000-0000-0000-0000-000000000020");

//            lock (this)
//            {
//                UserProfileTestUtils.CreateUserWithInventory(
//                    cm, userFirstName, userLastName, userPassword, userId, InventoryReceived);
//                Monitor.Wait(this, 60000);
//            }
            
//            // Create asset
//            SceneObjectGroup object1;
//            SceneObjectPart part1;
//            {
//                string partName = "part name";
//                UUID ownerId = UUID.Parse("00000000-0000-0000-0000-000000000040");
//                PrimitiveBaseShape shape = PrimitiveBaseShape.CreateSphere();
//                Vector3 groupPosition = new Vector3(10, 20, 30);
//                Quaternion rotationOffset = new Quaternion(20, 30, 40, 50);
//                Vector3 offsetPosition = new Vector3(5, 10, 15);

//                part1
//                    = new SceneObjectPart(
//                        ownerId, shape, groupPosition, rotationOffset, offsetPosition);
//                part1.Name = partName;

//                object1 = new SceneObjectGroup(part1);
//                scene.AddNewSceneObject(object1, false);
//            }

//            UUID asset1Id = UUID.Parse("00000000-0000-0000-0000-000000000060");
//            AssetBase asset1 = AssetHelpers.CreateAsset(asset1Id, object1);
//            scene.AssetService.Store(asset1);

//            // Create item
//            UUID item1Id = UUID.Parse("00000000-0000-0000-0000-000000000080");
//            InventoryItemBase item1 = new InventoryItemBase();
//            item1.Name = itemName;
//            item1.AssetID = asset1.FullID;
//            item1.ID = item1Id;
//            InventoryFolderBase objsFolder 
//                = InventoryArchiveUtils.FindFolderByPath(scene.InventoryService, userId, "Objects");
//            item1.Folder = objsFolder.ID;
//            scene.AddInventoryItem(userId, item1);

//            MemoryStream archiveWriteStream = new MemoryStream();
//            archiverModule.OnInventoryArchiveSaved += SaveCompleted;

//            mre.Reset();
//            archiverModule.ArchiveInventory(
//                Guid.NewGuid(), userFirstName, userLastName, "Objects", userPassword, archiveWriteStream);
//            mre.WaitOne(60000, false);

//            // LOAD ITEM
//            MemoryStream archiveReadStream = new MemoryStream(archiveWriteStream.ToArray());
            
//            archiverModule.DearchiveInventory(userFirstName, userLastName, "Scripts", userPassword, archiveReadStream);

//            InventoryItemBase foundItem1
//                = InventoryArchiveUtils.FindItemByPath(
//                    scene.InventoryService, userId, "Scripts/Objects/" + humanEscapedItemName);
            
//            Assert.That(foundItem1, Is.Not.Null, "Didn't find loaded item 1");
////            Assert.That(
////                foundItem1.CreatorId, Is.EqualTo(userUuid), 
////                "Loaded item non-uuid creator doesn't match that of the loading user");
//            Assert.That(
//                foundItem1.Name, Is.EqualTo(itemName), 
//                "Loaded item name doesn't match saved name");
//        }

        /// <summary>
        /// Test loading a V0.1 OpenSim Inventory Archive (subject to change since there is no fixed format yet) where
        /// embedded creators do not exist in the system
        /// </summary>
        ///
        /// This may possibly one day get overtaken by the as yet incomplete temporary profiles feature 
        /// (as tested in the a later commented out test)
        /// REFACTORING PROBLEM. Needs rewrite.
//        [Test]
//        public void TestLoadIarV0_1AbsentUsers()
//        {
//            TestHelper.InMethod();
            
//            //log4net.Config.XmlConfigurator.Configure();
            
//            string userFirstName = "Charlie";
//            string userLastName = "Chan";
//            UUID userUuid = UUID.Parse("00000000-0000-0000-0000-000000000999");
//            string userItemCreatorFirstName = "Bat";
//            string userItemCreatorLastName = "Man";
//            //UUID userItemCreatorUuid = UUID.Parse("00000000-0000-0000-0000-000000008888");
            
//            string itemName = "b.lsl";
//            string archiveItemName = InventoryArchiveWriteRequest.CreateArchiveItemName(itemName, UUID.Random());

//            MemoryStream archiveWriteStream = new MemoryStream();
//            TarArchiveWriter tar = new TarArchiveWriter(archiveWriteStream);

//            InventoryItemBase item1 = new InventoryItemBase();
//            item1.Name = itemName;
//            item1.AssetID = UUID.Random();
//            item1.GroupID = UUID.Random();
//            item1.CreatorId = OspResolver.MakeOspa(userItemCreatorFirstName, userItemCreatorLastName);
//            //item1.CreatorId = userUuid.ToString();
//            //item1.CreatorId = "00000000-0000-0000-0000-000000000444";
//            item1.Owner = UUID.Zero;
            
//            string item1FileName 
//                = string.Format("{0}{1}", ArchiveConstants.INVENTORY_PATH, archiveItemName);
//            tar.WriteFile(item1FileName, UserInventoryItemSerializer.Serialize(item1));
//            tar.Close();

//            MemoryStream archiveReadStream = new MemoryStream(archiveWriteStream.ToArray());
//            SerialiserModule serialiserModule = new SerialiserModule();
//            InventoryArchiverModule archiverModule = new InventoryArchiverModule(true);
            
//            // Annoyingly, we have to set up a scene even though inventory loading has nothing to do with a scene
//            Scene scene = SceneSetupHelpers.SetupScene("inventory");
//            IUserAdminService userAdminService = scene.CommsManager.UserAdminService;
            
//            SceneSetupHelpers.SetupSceneModules(scene, serialiserModule, archiverModule);
//            userAdminService.AddUser(
//                userFirstName, userLastName, "meowfood", String.Empty, 1000, 1000, userUuid);
            
//            archiverModule.DearchiveInventory(userFirstName, userLastName, "/", "meowfood", archiveReadStream);

//            CachedUserInfo userInfo 
//                = scene.CommsManager.UserProfileCacheService.GetUserDetails(userFirstName, userLastName);

//            InventoryItemBase foundItem1
//                = InventoryArchiveUtils.FindItemByPath(scene.InventoryService, userInfo.UserProfile.ID, itemName);
            
//            Assert.That(foundItem1, Is.Not.Null, "Didn't find loaded item 1");
////            Assert.That(
////                foundItem1.CreatorId, Is.EqualTo(userUuid), 
////                "Loaded item non-uuid creator doesn't match that of the loading user");
//            Assert.That(
//                foundItem1.CreatorIdAsUuid, Is.EqualTo(userUuid), 
//                "Loaded item uuid creator doesn't match that of the loading user");
//        }

        /// <summary>
        /// Test loading a V0.1 OpenSim Inventory Archive (subject to change since there is no fixed format yet) where
        /// no account exists with the creator name
        /// </summary>
        /// Disabled since temporary profiles have not yet been implemented.
        /// REFACTORING PROBLEM. Needs rewrite.
        /// 
        //[Test]
        //public void TestLoadIarV0_1TempProfiles()
        //{
        //    TestHelper.InMethod();
            
        //    //log4net.Config.XmlConfigurator.Configure();
            
        //    string userFirstName = "Dennis";
        //    string userLastName = "Menace";
        //    UUID userUuid = UUID.Parse("00000000-0000-0000-0000-000000000aaa");
        //    string user2FirstName = "Walter";
        //    string user2LastName = "Mitty";
            
        //    string itemName = "b.lsl";
        //    string archiveItemName = InventoryArchiveWriteRequest.CreateArchiveItemName(itemName, UUID.Random());

        //    MemoryStream archiveWriteStream = new MemoryStream();
        //    TarArchiveWriter tar = new TarArchiveWriter(archiveWriteStream);

        //    InventoryItemBase item1 = new InventoryItemBase();
        //    item1.Name = itemName;
        //    item1.AssetID = UUID.Random();
        //    item1.GroupID = UUID.Random();
        //    item1.CreatorId = OspResolver.MakeOspa(user2FirstName, user2LastName);
        //    item1.Owner = UUID.Zero;
            
        //    string item1FileName 
        //        = string.Format("{0}{1}", ArchiveConstants.INVENTORY_PATH, archiveItemName);
        //    tar.WriteFile(item1FileName, UserInventoryItemSerializer.Serialize(item1));
        //    tar.Close();

        //    MemoryStream archiveReadStream = new MemoryStream(archiveWriteStream.ToArray());
        //    SerialiserModule serialiserModule = new SerialiserModule();
        //    InventoryArchiverModule archiverModule = new InventoryArchiverModule(true);
            
        //    // Annoyingly, we have to set up a scene even though inventory loading has nothing to do with a scene
        //    Scene scene = SceneSetupHelpers.SetupScene();
        //    IUserAdminService userAdminService = scene.CommsManager.UserAdminService;
            
        //    SceneSetupHelpers.SetupSceneModules(scene, serialiserModule, archiverModule);
        //    userAdminService.AddUser(
        //        userFirstName, userLastName, "meowfood", String.Empty, 1000, 1000, userUuid);
            
        //    archiverModule.DearchiveInventory(userFirstName, userLastName, "/", "troll", archiveReadStream);
            
        //    // Check that a suitable temporary user profile has been created.
        //    UserProfileData user2Profile 
        //        = scene.CommsManager.UserService.GetUserProfile(
        //            OspResolver.HashName(user2FirstName + " " + user2LastName));
        //    Assert.That(user2Profile, Is.Not.Null);
        //    Assert.That(user2Profile.FirstName == user2FirstName);
        //    Assert.That(user2Profile.SurName == user2LastName);
            
        //    CachedUserInfo userInfo 
        //        = scene.CommsManager.UserProfileCacheService.GetUserDetails(userFirstName, userLastName);
        //    userInfo.OnInventoryReceived += InventoryReceived;

        //    lock (this)
        //    {
        //        userInfo.FetchInventory();
        //        Monitor.Wait(this, 60000);
        //    }
            
        //    InventoryItemBase foundItem = userInfo.RootFolder.FindItemByPath(itemName);
            
        //    Assert.That(foundItem.CreatorId, Is.EqualTo(item1.CreatorId));
        //    Assert.That(
        //        foundItem.CreatorIdAsUuid, Is.EqualTo(OspResolver.HashName(user2FirstName + " " + user2LastName)));
        //    Assert.That(foundItem.Owner, Is.EqualTo(userUuid));
            
        //    Console.WriteLine("### Successfully completed {0} ###", MethodBase.GetCurrentMethod());
        //}
        
        /// <summary>
        /// Test replication of an archive path to the user's inventory.
        /// </summary>
        [Test]
        public void TestReplicateArchivePathToUserInventory()
        {
            TestHelper.InMethod();
            //log4net.Config.XmlConfigurator.Configure();
            
            Scene scene = SceneSetupHelpers.SetupScene("inventory");
            UserAccount ua1 = UserProfileTestUtils.CreateUserWithInventory(scene);
            
            Dictionary <string, InventoryFolderBase> foldersCreated = new Dictionary<string, InventoryFolderBase>();
            List<InventoryNodeBase> nodesLoaded = new List<InventoryNodeBase>();
            
            string folder1Name = "a";
            string folder2Name = "b";
            string itemName = "c.lsl";
            
            string folder1ArchiveName = InventoryArchiveWriteRequest.CreateArchiveFolderName(folder1Name, UUID.Random());
            string folder2ArchiveName = InventoryArchiveWriteRequest.CreateArchiveFolderName(folder2Name, UUID.Random());
            string itemArchiveName = InventoryArchiveWriteRequest.CreateArchiveItemName(itemName, UUID.Random());
            
            string itemArchivePath
                = string.Format(
                    "{0}{1}{2}{3}", 
                    ArchiveConstants.INVENTORY_PATH, folder1ArchiveName, folder2ArchiveName, itemArchiveName);

            new InventoryArchiveReadRequest(scene, ua1, null, (Stream)null)
                .ReplicateArchivePathToUserInventory(
                    itemArchivePath, false, scene.InventoryService.GetRootFolder(ua1.PrincipalID), 
                    foldersCreated, nodesLoaded);

            InventoryFolderBase folder1 
                = InventoryArchiveUtils.FindFolderByPath(scene.InventoryService, ua1.PrincipalID, "a");
            Assert.That(folder1, Is.Not.Null, "Could not find folder a");
            InventoryFolderBase folder2 = InventoryArchiveUtils.FindFolderByPath(scene.InventoryService, folder1, "b");
            Assert.That(folder2, Is.Not.Null, "Could not find folder b");
        }
    }
}