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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 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
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Text;
using log4net.Config;
using Nini.Config;
using NUnit.Framework;
using OpenMetaverse;
using OpenMetaverse.Packets;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Servers;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Region.ClientStack.Linden;
using OpenSim.Region.CoreModules.Framework;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Region.OptionalModules.World.NPC;
using OpenSim.Tests.Common;

namespace OpenSim.Region.ClientStack.Linden.Tests
{
    [TestFixture]
    public class EventQueueTests : OpenSimTestCase
    {
        private TestScene m_scene;
        private EventQueueGetModule m_eqgMod;
        private NPCModule m_npcMod;

        [SetUp]
        public override void SetUp()
        {
            base.SetUp();

            uint port = 9999;

            // This is an unfortunate bit of clean up we have to do because MainServer manages things through static
            // variables and the VM is not restarted between tests.
            MainServer.RemoveHttpServer(port);

            BaseHttpServer server = new BaseHttpServer(port, false, "","","");
            MainServer.AddHttpServer(server);
            MainServer.Instance = server;

            IConfigSource config = new IniConfigSource();
            config.AddConfig("Startup");

            CapabilitiesModule capsModule = new CapabilitiesModule();
            m_eqgMod = new EventQueueGetModule();

            // For NPC test support
            config.AddConfig("NPC");
            config.Configs["NPC"].Set("Enabled", "true");
            m_npcMod = new NPCModule();

            m_scene = new SceneHelpers().SetupScene();
            SceneHelpers.SetupSceneModules(m_scene, config, capsModule, m_eqgMod, m_npcMod);
        }

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

            SceneHelpers.AddScenePresence(m_scene, TestHelpers.ParseTail(0x1));

            // TODO: Add more assertions for the other aspects of event queues
            Assert.That(MainServer.Instance.GetPollServiceHandlerKeys().Count, Is.EqualTo(1));
        }

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

            UUID spId = TestHelpers.ParseTail(0x1);

            SceneHelpers.AddScenePresence(m_scene, spId);
            m_scene.CloseAgent(spId, false);

            // TODO: Add more assertions for the other aspects of event queues
            Assert.That(MainServer.Instance.GetPollServiceHandlerKeys().Count, Is.EqualTo(0));
        }

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

            ScenePresence sp = SceneHelpers.AddScenePresence(m_scene, TestHelpers.ParseTail(0x1));

            string messageName = "TestMessage";

            m_eqgMod.Enqueue(m_eqgMod.BuildEvent(messageName, new OSDMap()), sp.UUID);

            Hashtable eventsResponse = m_eqgMod.GetEvents(UUID.Zero, sp.UUID);

            // initial queue as null events
//            eventsResponse = m_eqgMod.GetEvents(UUID.Zero, sp.UUID);
            if((int)eventsResponse["int_response_code"] != (int)HttpStatusCode.OK)
            {
                eventsResponse = m_eqgMod.GetEvents(UUID.Zero, sp.UUID);
                if((int)eventsResponse["int_response_code"] != (int)HttpStatusCode.OK)
                    eventsResponse = m_eqgMod.GetEvents(UUID.Zero, sp.UUID);
            }

            Assert.That((int)eventsResponse["int_response_code"], Is.EqualTo((int)HttpStatusCode.OK));

//            Console.WriteLine("Response [{0}]", (string)eventsResponse["str_response_string"]);
            string data = String.Empty;
            if(eventsResponse["bin_response_data"] != null)
                data = Encoding.UTF8.GetString((byte[])eventsResponse["bin_response_data"]);

            OSDMap rawOsd = (OSDMap)OSDParser.DeserializeLLSDXml(data);
            OSDArray eventsOsd = (OSDArray)rawOsd["events"];

            bool foundUpdate = false;
            foreach (OSD osd in eventsOsd)
            {
                OSDMap eventOsd = (OSDMap)osd;

                if (eventOsd["message"] == messageName)
                    foundUpdate = true;
            }

            Assert.That(foundUpdate, Is.True, string.Format("Did not find {0} in response", messageName));
        }

        /// <summary>
        /// Test an attempt to put a message on the queue of a user that is not in the region.
        /// </summary>
        [Test]
        public void TestEnqueueMessageNoUser()
        {
            TestHelpers.InMethod();
            TestHelpers.EnableLogging();

            string messageName = "TestMessage";

            m_eqgMod.Enqueue(m_eqgMod.BuildEvent(messageName, new OSDMap()), TestHelpers.ParseTail(0x1));

            Hashtable eventsResponse = m_eqgMod.GetEvents(UUID.Zero, TestHelpers.ParseTail(0x1));

            Assert.That((int)eventsResponse["int_response_code"], Is.EqualTo((int)HttpStatusCode.BadGateway));
        }

        /// <summary>
        /// NPCs do not currently have an event queue but a caller may try to send a message anyway, so check behaviour.
        /// </summary>
        [Test]
        public void TestEnqueueMessageToNpc()
        {
            TestHelpers.InMethod();
//            TestHelpers.EnableLogging();

            UUID npcId
                = m_npcMod.CreateNPC(
                    "John", "Smith", new Vector3(128, 128, 30), UUID.Zero, true, m_scene, new AvatarAppearance());

            ScenePresence npc = m_scene.GetScenePresence(npcId);

            string messageName = "TestMessage";

            m_eqgMod.Enqueue(m_eqgMod.BuildEvent(messageName, new OSDMap()), npc.UUID);

            Hashtable eventsResponse = m_eqgMod.GetEvents(UUID.Zero, npc.UUID);

            Assert.That((int)eventsResponse["int_response_code"], Is.EqualTo((int)HttpStatusCode.BadGateway));
        }
    }
}