using System;
using System.Reflection;
using Deltares.Geotechnics;
using Deltares.Probabilistic;
using Deltares.Standard;
using Deltares.Standard.EventPublisher;
using Deltares.Standard.Reflection;
using NUnit.Framework;

namespace Deltares.DSoilModel.Data.Tests
{
    [TestFixture]
    public class DSoilModelTransformerTests
    {
        private bool oldIsDataEventPublishStopped;

        [TestFixtureSetUp]
        public void FixtureSetup()
        {
            oldIsDataEventPublishStopped = DataEventPublisher.IsDataEventPublishStopped;
            DataEventPublisher.IsDataEventPublishStopped = true;

            TransformerManager.Transformer = new DSoilModelTransformer();
        }

        [TestFixtureTearDown]
        public void FixtureTearDown()
        {
            DataEventPublisher.IsDataEventPublishStopped = oldIsDataEventPublishStopped;
        }

        private Stochast FindAutoStochastProperty(object obj, string property)
        {
            var instance = TransformerManager.Transformer as DSoilModelTransformer;
            return (Stochast)instance.GetType().GetMethod("FindAutoStochastProperty", BindingFlags.NonPublic | BindingFlags.Instance).Invoke(instance, new[] {obj, property});
        }

        [TestCase(typeof(Soil))]
        [TestCase(typeof(PreConsolidationStress))]
        public void TestFindAutoStochastProperty(Type objType) 
        {
            var obj = Activator.CreateInstance(objType);
            var stochastProperties = PropertyInfoSupport.GetPropertiesOfType(obj.GetType(), typeof (Stochast));
            foreach (BindPropertyInfo propertyInfo in stochastProperties)
            {
                var stochast = (Stochast) propertyInfo.GetValue(obj, null);
                Assert.AreSame(stochast, FindAutoStochastProperty(obj, stochast.AssociatedPropertyName));
            }
        }

        [Test]
        public void FindAutoStochastPropertyTest_ReturnsNullForUnknownProperty()
        {
            Assert.IsNull(FindAutoStochastProperty(new SosSoilLayer1D(), "Property"));
            Assert.IsNull(FindAutoStochastProperty(new SosSoilLayer1D(), null));
        }

        [Test]
        [TestCase(typeof(Soil), "Cohesion")]
        [TestCase(typeof(Soil), "BeddingAngle")]
        [TestCase(typeof(PreConsolidationStress), "StressValue")]
        public void TestStochasticPropertiesUncoupled(Type objType, string propertyName)
        {
            var obj = Activator.CreateInstance(objType);
            var deterministicProperty = obj.GetType().GetProperty(propertyName);
            var stochasticProperty = FindAutoStochastProperty(obj, propertyName); // reusing method that we already test

            var changedValue = 123.456;
            deterministicProperty.SetValue(obj, changedValue, null);

            Assert.AreEqual(changedValue, deterministicProperty.GetValue(obj, null)); // deterministic property indeed changed
            Assert.AreNotEqual(changedValue, stochasticProperty.Mean); // but stochastic property remained its mean value
        }

        [Test]
        public void GetTransformedValueTest_ReturnsInitialValueIfNotSupported()
        {
            var transformer = new DSoilModelTransformer();
            Assert.AreEqual(44, transformer.GetTransformedValue(new SosSoilLayer1D(), "Property", 44));
            Assert.AreEqual(54, transformer.SetTransformedValue(new SosSoilLayer1D(), "Property", 54));
        }
    }
}