using System.Linq;
using Core.Common.Base;
using NUnit.Framework;
using Ringtoets.Integration.Data.Contribution;

using RingtoetsIntegrationResources = Ringtoets.Integration.Data.Properties.Resources;

namespace Ringtoets.Integration.Data.Test
{
    [TestFixture]
    public class DuneAssessmentSectionTest
    {
        [Test]
        public void DefaultConstructor_ExpectedValues()
        {
            // Setup
            var duneErosionName = "Duinen - Erosie";

            var contributions = new double[] { 70, 30 };
            var names = new[] {
                duneErosionName,
                RingtoetsIntegrationResources.OtherFailureMechanism_DisplayName
            };

            // Call
            var section = new DuneAssessmentSection();

            // Assert
            Assert.IsInstanceOf<Observable>(section);
            Assert.IsInstanceOf<AssessmentSectionBase>(section);
            Assert.IsInstanceOf<FailureMechanismContribution>(section.FailureMechanismContribution);

            Assert.AreEqual("Duintraject", section.Name);
            Assert.AreEqual("Referentielijn", section.ReferenceLine.Name);
            Assert.AreEqual(duneErosionName, section.DuneErosionFailureMechanism.Name);

            Assert.AreEqual(70, section.DuneErosionFailureMechanism.Contribution);

            Assert.AreEqual(contributions, section.FailureMechanismContribution.Distribution.Select(d => d.Contribution));
            Assert.AreEqual(names, section.FailureMechanismContribution.Distribution.Select(d => d.Assessment));
            Assert.AreEqual(Enumerable.Repeat(30000.0, 2), section.FailureMechanismContribution.Distribution.Select(d => d.Norm));


            Assert.AreEqual(100, section.FailureMechanismContribution.Distribution.Sum(d => d.Contribution));
        }

        [Test]
        public void GetFailureMechanisms_Always_ReturnAllFailureMechanisms()
        {
            // Setup
            var assessmentSection = new DuneAssessmentSection();

            // Call
            var failureMechanisms = assessmentSection.GetFailureMechanisms().ToArray();

            // Assert
            Assert.AreEqual(1, failureMechanisms.Length);
            Assert.AreSame(assessmentSection.DuneErosionFailureMechanism, failureMechanisms[0]);
        }

        [Test]
        public void FailureMechanismContribution_DefaultConstructed_FailureMechanismContributionWithItemsForFailureMechanismsAndOther()
        {
            // Setup
            var assessmentSection = new DuneAssessmentSection();

            // Call
            var contribution = assessmentSection.FailureMechanismContribution.Distribution.ToArray();

            // Assert
            var failureMechanisms = assessmentSection.GetFailureMechanisms().ToArray();

            Assert.AreEqual(2, contribution.Length);

            Assert.AreEqual(failureMechanisms[0].Name, contribution[0].Assessment);
            Assert.AreEqual(failureMechanisms[0].Contribution, contribution[0].Contribution);
            Assert.AreEqual((30000 / contribution[0].Contribution) * 100, contribution[0].ProbabilitySpace);

            Assert.AreEqual(RingtoetsIntegrationResources.OtherFailureMechanism_DisplayName, contribution[1].Assessment);
            Assert.AreEqual(30, contribution[1].Contribution);
            Assert.AreEqual((30000 / contribution[1].Contribution) * 100, 100000);
        }
    }
}