using System;
using System.Diagnostics;
using System.Linq;
using Autofac;
using NHibernate;
using NUnit.Framework;
using Orchard.Data;
using Orchard.ContentManagement;
using Orchard.ContentManagement.Handlers;
using Orchard.ContentManagement.Records;
using Orchard.Tests.ContentManagement.Records;
using Orchard.Tests.ContentManagement.Models;

namespace Orchard.Tests.ContentManagement {
    [TestFixture]
    public class DefaultContentManagerTests {
        private IContainer _container;
        private IContentManager _manager;
        private ISessionFactory _sessionFactory;
        private ISession _session;

        [TestFixtureSetUp]
        public void InitFixture() {
            var databaseFileName = System.IO.Path.GetTempFileName();
            _sessionFactory = DataUtility.CreateSessionFactory(
                databaseFileName,
                typeof(ContentTypeRecord),
                typeof(ContentItemRecord),
                typeof(ContentItemVersionRecord),
                typeof(GammaRecord),
                typeof(DeltaRecord),
                typeof(EpsilonRecord));
        }

        [TestFixtureTearDown]
        public void TermFixture() {

        }

        [SetUp]
        public void Init() {
            var builder = new ContainerBuilder();
            //builder.RegisterModule(new ImplicitCollectionSupportModule());
            builder.RegisterType<DefaultContentManager>().As<IContentManager>();
            builder.RegisterType<DefaultContentManagerSession>().As<IContentManagerSession>();

            builder.RegisterType<AlphaHandler>().As<IContentHandler>();
            builder.RegisterType<BetaHandler>().As<IContentHandler>();
            builder.RegisterType<GammaHandler>().As<IContentHandler>();
            builder.RegisterType<DeltaHandler>().As<IContentHandler>();
            builder.RegisterType<EpsilonHandler>().As<IContentHandler>();
            builder.RegisterType<FlavoredHandler>().As<IContentHandler>();
            builder.RegisterType<StyledHandler>().As<IContentHandler>();

            builder.RegisterGeneric(typeof(Repository<>)).As(typeof(IRepository<>));

            _session = _sessionFactory.OpenSession();
            builder.RegisterInstance(new TestSessionLocator(_session)).As<ISessionLocator>();

            _container = builder.Build();
            _manager = _container.Resolve<IContentManager>();
        }

        public class TestSessionLocator : ISessionLocator {
            private readonly ISession _session;

            public TestSessionLocator(ISession session) {
                _session = session;
            }

            public ISession For(Type entityType) {
                return _session;
            }
        }

        [Test]
        public void AlphaDriverShouldWeldItsPart() {
            var foo = _manager.New("alpha");

            Assert.That(foo.Is<Alpha>(), Is.True);
            Assert.That(foo.As<Alpha>(), Is.Not.Null);
            Assert.That(foo.Is<Beta>(), Is.False);
            Assert.That(foo.As<Beta>(), Is.Null);
        }

        [Test]
        public void StronglyTypedNewShouldTypeCast() {
            var foo = _manager.New<Alpha>("alpha");
            Assert.That(foo, Is.Not.Null);
            Assert.That(foo.GetType(), Is.EqualTo(typeof(Alpha)));
        }

        [Test, ExpectedException(typeof(InvalidCastException))]
        public void StronglyTypedNewShouldThrowCastExceptionIfNull() {
            _manager.New<Beta>("alpha");
        }

        [Test]
        public void AlphaIsFlavoredAndStyledAndBetaIsFlavoredOnly() {
            var alpha = _manager.New<Alpha>("alpha");
            var beta = _manager.New<Beta>("beta");

            Assert.That(alpha.Is<Flavored>(), Is.True);
            Assert.That(alpha.Is<Styled>(), Is.True);
            Assert.That(beta.Is<Flavored>(), Is.True);
            Assert.That(beta.Is<Styled>(), Is.False);
        }

        [Test]
        public void GetByIdShouldDetermineTypeAndLoadParts() {
            var modelRecord = CreateModelRecord("alpha");

            var contentItem = _manager.Get(modelRecord.Id);
            Assert.That(contentItem.ContentType, Is.EqualTo("alpha"));
            Assert.That(contentItem.Id, Is.EqualTo(modelRecord.Id));
        }


        [Test]
        public void ModelPartWithRecordShouldCallRepositoryToPopulate() {

            CreateModelRecord("gamma");
            CreateModelRecord("gamma");
            var modelRecord = CreateModelRecord("gamma");

            var model = _manager.Get(modelRecord.Id);

            //// create a gamma record
            //var gamma = new GammaRecord {
            //    ContentItemRecord = _container.Resolve<IRepository<ContentItemRecord>>().Get(model.Id),
            //    Frap = "foo"
            //};

            //_container.Resolve<IRepository<GammaRecord>>().Create(gamma);
            //_session.Flush();
            //_session.Clear();

            // re-fetch from database
            model = _manager.Get(modelRecord.Id);

            Assert.That(model.ContentType, Is.EqualTo("gamma"));
            Assert.That(model.Id, Is.EqualTo(modelRecord.Id));
            Assert.That(model.Is<Gamma>(), Is.True);
            Assert.That(model.As<Gamma>().Record, Is.Not.Null);
            Assert.That(model.As<Gamma>().Record.ContentItemRecord.Id, Is.EqualTo(model.Id));

        }

        [Test]
        public void CreateShouldMakeModelAndContentTypeRecords() {
            var beta = _manager.New("beta");
            _manager.Create(beta);

            var modelRecord = _container.Resolve<IRepository<ContentItemRecord>>().Get(beta.Id);
            Assert.That(modelRecord, Is.Not.Null);
            Assert.That(modelRecord.ContentType.Name, Is.EqualTo("beta"));
        }

        [Test]
        public void GetContentTypesShouldReturnAllTypes() {
            var types = _manager.GetContentTypes();
            Assert.That(types.Count(), Is.EqualTo(4));
            Assert.That(types, Has.Some.With.Property("Name").EqualTo("alpha"));
            Assert.That(types, Has.Some.With.Property("Name").EqualTo("beta"));
            Assert.That(types, Has.Some.With.Property("Name").EqualTo("gamma"));
            Assert.That(types, Has.Some.With.Property("Name").EqualTo("delta"));
        }

        private ContentItemRecord CreateModelRecord(string contentType) {
            var contentTypeRepository = _container.Resolve<IRepository<ContentTypeRecord>>();
            var contentItemRepository = _container.Resolve<IRepository<ContentItemRecord>>();
            var contentItemVersionRepository = _container.Resolve<IRepository<ContentItemVersionRecord>>();

            var modelRecord = new ContentItemRecord { ContentType = contentTypeRepository.Get(x => x.Name == contentType) };
            if (modelRecord.ContentType == null) {
                modelRecord.ContentType = new ContentTypeRecord { Name = contentType };
                contentTypeRepository.Create(modelRecord.ContentType);
            }
            contentItemRepository.Create(modelRecord);

            contentItemVersionRepository.Create(new ContentItemVersionRecord { ContentItemRecord = modelRecord, Latest = true, Published = true, Number = 1 });

            _session.Flush();
            _session.Clear();
            return modelRecord;
        }

        [Test]
        public void InitialVersionShouldBeOne() {
            var gamma1 = _manager.Create<Gamma>("gamma");
            Assert.That(gamma1.ContentItem.Record, Is.Not.Null);
            Assert.That(gamma1.ContentItem.VersionRecord, Is.Not.Null);
            Assert.That(gamma1.ContentItem.Version, Is.EqualTo(1));
            Assert.That(gamma1.ContentItem.VersionRecord.Number, Is.EqualTo(1));

            _session.Flush();
            _session.Clear();
            Trace.WriteLine("session flushed");

            var gamma2 = _manager.Get<Gamma>(gamma1.ContentItem.Id);
            Assert.That(gamma2.ContentItem.Record, Is.Not.Null);
            Assert.That(gamma2.ContentItem.VersionRecord, Is.Not.Null);
            Assert.That(gamma2.ContentItem.Version, Is.EqualTo(1));
            Assert.That(gamma2.ContentItem.VersionRecord.Number, Is.EqualTo(1));

            // asserts results are re-acquired from db
            Assert.That(gamma1, Is.Not.SameAs(gamma2));
            Assert.That(gamma1.Record, Is.Not.SameAs(gamma2.Record));
            Assert.That(gamma1.ContentItem, Is.Not.SameAs(gamma2.ContentItem));
            Assert.That(gamma1.ContentItem.Record, Is.Not.SameAs(gamma2.ContentItem.Record));
            Assert.That(gamma1.ContentItem.VersionRecord, Is.Not.SameAs(gamma2.ContentItem.VersionRecord));
        }

        [Test]
        public void InitialVersionCanBeSpecifiedAndIsPublished() {
            var gamma1 = _manager.Create<Gamma>("gamma", VersionOptions.Number(4));

            Assert.That(gamma1.ContentItem.Version, Is.EqualTo(4));
            Assert.That(gamma1.ContentItem.VersionRecord.Published, Is.True);

            _session.Flush();
            _session.Clear();
        }

        [Test]
        public void PublishedShouldBeLatestButNotDraft() {
            var gamma1 = _manager.Create("gamma", VersionOptions.Published);

            var gammaPublished = _manager.Get(gamma1.Id, VersionOptions.Published);
            var gammaLatest = _manager.Get(gamma1.Id, VersionOptions.Latest);
            var gammaDraft = _manager.Get(gamma1.Id, VersionOptions.Draft);

            Assert.That(gammaPublished.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaLatest.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaDraft, Is.Null);
        }

        [Test]
        public void DraftShouldBeLatestButNotPublished() {
            var gamma1 = _manager.Create("gamma", VersionOptions.Draft);

            var gammaPublished = _manager.Get(gamma1.Id, VersionOptions.Published);
            var gammaLatest = _manager.Get(gamma1.Id, VersionOptions.Latest);
            var gammaDraft = _manager.Get(gamma1.Id, VersionOptions.Draft);

            Assert.That(gammaDraft.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaLatest.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaPublished, Is.Null);
        }


        [Test]
        public void CreateDraftShouldNotCreateExtraDraftCopies() {
            var gamma1 = _manager.Create("gamma", VersionOptions.Draft);
            _session.Flush();
            _session.Clear();

            var gammaDraft1 = _manager.Get(gamma1.Id, VersionOptions.Draft);
            Assert.That(gammaDraft1.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaDraft1.Record.Versions, Has.Count.EqualTo(1));
            _session.Flush();
            _session.Clear();

            var gammaDraft2 = _manager.Get(gamma1.Id, VersionOptions.DraftRequired);
            Assert.That(gammaDraft2.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaDraft2.Record.Versions, Has.Count.EqualTo(1));
            _session.Flush();
            _session.Clear();

            var gammaDraft3 = _manager.Get(gamma1.Id, VersionOptions.Draft);
            Assert.That(gammaDraft3.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaDraft3.Record.Versions, Has.Count.EqualTo(1));
            _session.Flush();
            _session.Clear();

            var gammaDraft4 = _manager.Get(gamma1.Id, VersionOptions.DraftRequired);
            Assert.That(gammaDraft4.VersionRecord.Id, Is.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gammaDraft4.Record.Versions, Has.Count.EqualTo(1));
            _session.Flush();
            _session.Clear();
        }

        [Test]
        public void DraftRequiredShouldBuildNewVersionIfLatestIsAlreadyPublished() {
            Trace.WriteLine("gamma1");
            var gamma1 = _manager.Create("gamma", VersionOptions.Published);
            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            Trace.WriteLine("gammaDraft1");
            var gammaDraft1 = _manager.Get(gamma1.Id, VersionOptions.Draft);
            Assert.That(gammaDraft1, Is.Null);
            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            Trace.WriteLine("gammaDraft2");
            var gammaDraft2 = _manager.Get(gamma1.Id, VersionOptions.DraftRequired);
            Assert.That(gammaDraft2.VersionRecord.Id, Is.Not.EqualTo(gamma1.VersionRecord.Id));
            Assert.That(gamma1.Version, Is.EqualTo(1));
            Assert.That(gammaDraft2.Version, Is.EqualTo(2));
            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            foreach (var x in _container.Resolve<IRepository<ContentItemVersionRecord>>().Fetch(x => true)) {
                Trace.WriteLine(string.Format("{0}/{1} #{2} published:{3} latest:{4}",
                    x.ContentItemRecord.Id,
                    x.Id,
                    x.Number,
                    x.Published,
                    x.Latest));
            }

            Trace.WriteLine("gammaDraft3");
            var gammaDraft3 = _manager.Get(gamma1.Id, VersionOptions.Draft);
            Assert.That(gammaDraft3.VersionRecord.Id, Is.EqualTo(gammaDraft2.VersionRecord.Id));
            Assert.That(gammaDraft3.Record, Is.Not.SameAs(gammaDraft2.Record));
            Assert.That(gammaDraft3.Record.Versions, Is.Not.SameAs(gammaDraft2.Record.Versions));

            Assert.That(gammaDraft3.Record.Versions, Has.Count.EqualTo(2));
            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            Trace.WriteLine("gammaDraft4");
            var gammaDraft4 = _manager.Get(gamma1.Id, VersionOptions.DraftRequired);
            Assert.That(gammaDraft4.VersionRecord.Id, Is.EqualTo(gammaDraft2.VersionRecord.Id));
            Assert.That(gammaDraft4.Record.Versions, Has.Count.EqualTo(2));
            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            Trace.WriteLine("gamma2");
            var gamma2 = _manager.Get(gamma1.Id);
            Assert.That(gamma2.Record.Versions, Has.Count.EqualTo(2));
        }

        [Test]
        public void NonVersionedPartsAreBoundToSameRecord() {
            Trace.WriteLine("gamma1");
            var gamma1 = _manager.Create<Gamma>("gamma", VersionOptions.Published, init => init.Record.Frap = "version one");
            Trace.WriteLine("gamma2");
            var gamma2 = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.DraftRequired);
            Assert.That(gamma1.Record.Frap, Is.EqualTo("version one"));
            Assert.That(gamma2.Record.Frap, Is.EqualTo("version one"));
            gamma2.Record.Frap = "version two";
            Assert.That(gamma1.Record.Frap, Is.EqualTo("version two"));
            Assert.That(gamma2.Record.Frap, Is.EqualTo("version two"));

            Trace.WriteLine("flush");
            _session.Flush();
            _session.Clear();

            Trace.WriteLine("gamma1B");
            var gamma1B = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.Published);
            Trace.WriteLine("gamma2B");
            var gamma2B = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.Draft);
            Assert.That(gamma1B.Record, Is.SameAs(gamma2B.Record));
            Assert.That(gamma1B.Record.Frap, Is.EqualTo("version two"));
            Assert.That(gamma2B.Record.Frap, Is.EqualTo("version two"));
            Assert.That(gamma1B.ContentItem.VersionRecord.Id, Is.Not.EqualTo(gamma2B.ContentItem.VersionRecord.Id));

            Assert.That(gamma1.ContentItem.Record, Is.Not.SameAs(gamma1B.ContentItem.Record));
            Assert.That(gamma2.ContentItem.Record, Is.Not.SameAs(gamma2B.ContentItem.Record));
            Assert.That(gamma1.ContentItem.Record, Is.SameAs(gamma2.ContentItem.Record));
            Assert.That(gamma1B.ContentItem.Record, Is.SameAs(gamma2B.ContentItem.Record));
            Assert.That(gamma1.ContentItem.VersionRecord, Is.Not.SameAs(gamma2.ContentItem.VersionRecord));
            Assert.That(gamma1B.ContentItem.VersionRecord, Is.Not.SameAs(gamma2B.ContentItem.VersionRecord));

            Trace.WriteLine("flush");
            _session.Flush();
        }

        [Test]
        public void VersionedPartsShouldBeDifferentRecordsWithClonedData() {
            var gamma1 = _manager.Create<Gamma>("gamma", VersionOptions.Published, init => init.Record.Frap = "version one");
            var epsilon1 = gamma1.As<Epsilon>();
            epsilon1.Record.Quad = "epsilon one";

            var gamma2 = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.DraftRequired);
            var epsilon2 = gamma2.As<Epsilon>();

            Assert.That(epsilon1.Record.Quad, Is.EqualTo("epsilon one"));
            Assert.That(epsilon2.Record.Quad, Is.EqualTo("epsilon one"));
            epsilon2.Record.Quad = "epsilon two";
            Assert.That(epsilon1.Record.Quad, Is.EqualTo("epsilon one"));
            Assert.That(epsilon2.Record.Quad, Is.EqualTo("epsilon two"));


            _session.Flush();
            _session.Clear();

            var gamma1B = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.Published);
            var epsilon1B = gamma1B.As<Epsilon>();
            var gamma2B = _manager.Get<Gamma>(gamma1.ContentItem.Id, VersionOptions.Draft);
            var epsilon2B = gamma2B.As<Epsilon>();
            Assert.That(gamma1B.Record, Is.SameAs(gamma2B.Record));
            Assert.That(epsilon1B.Record, Is.Not.SameAs(epsilon2B.Record));
            Assert.That(epsilon1B.Record.Quad, Is.EqualTo("epsilon one"));
            Assert.That(epsilon2B.Record.Quad, Is.EqualTo("epsilon two"));
            Assert.That(epsilon1B.ContentItem.VersionRecord.Id, Is.Not.EqualTo(epsilon2B.ContentItem.VersionRecord.Id));

            Assert.That(epsilon1.ContentItem.Record, Is.Not.SameAs(epsilon1B.ContentItem.Record));
            Assert.That(epsilon2.ContentItem.Record, Is.Not.SameAs(epsilon2B.ContentItem.Record));
            Assert.That(epsilon1.ContentItem.Record, Is.SameAs(epsilon2.ContentItem.Record));
            Assert.That(epsilon1B.ContentItem.Record, Is.SameAs(epsilon2B.ContentItem.Record));
            Assert.That(epsilon1.ContentItem.VersionRecord, Is.Not.SameAs(epsilon2.ContentItem.VersionRecord));
            Assert.That(epsilon1B.ContentItem.VersionRecord, Is.Not.SameAs(epsilon2B.ContentItem.VersionRecord));
        }

        private void Flush() {
            Trace.WriteLine("flush");
            _session.Flush();

        }
        private void FlushAndClear() {
            Trace.WriteLine("flush");
            _session.Flush();
            Trace.WriteLine("clear");
            _session.Clear();
        }

        [Test]
        public void GetAllVersionsShouldReturnHistoryInOrder() {
            Trace.WriteLine("gamma1");
            var gamma1 = _manager.Create("gamma", VersionOptions.Published);
            Flush();

            Trace.WriteLine("gamma2");
            var gamma2 = _manager.GetDraftRequired(gamma1.Id);
            Trace.WriteLine("publish");
            _manager.Publish(gamma2);
            Flush();

            Trace.WriteLine("gamma3");
            var gamma3 = _manager.GetDraftRequired(gamma1.Id);
            Trace.WriteLine("publish");
            _manager.Publish(gamma3);
            Flush();

            Trace.WriteLine("gamma4");
            var gamma4 = _manager.GetDraftRequired(gamma1.Id);
            Trace.WriteLine("publish");
            _manager.Publish(gamma2);
            FlushAndClear();

            Assert.That(gamma1.Version, Is.EqualTo(1));
            Assert.That(gamma2.Version, Is.EqualTo(2));
            Assert.That(gamma3.Version, Is.EqualTo(3));
            Assert.That(gamma4.Version, Is.EqualTo(4));

            var gammas = _manager.GetAllVersions(gamma1.Id).ToList();

            Assert.That(gammas[0].Version, Is.EqualTo(1));
            Assert.That(gammas[1].Version, Is.EqualTo(2));
            Assert.That(gammas[2].Version, Is.EqualTo(3));
            Assert.That(gammas[3].Version, Is.EqualTo(4));
        }

    }
}