using System;
using System.Windows.Forms;
using Core.Common.Base;
using NUnit.Extensions.Forms;
using NUnit.Framework;
using Rhino.Mocks;
using Ringtoets.Common.Data;
using Ringtoets.Common.Data.Contribution;
using Ringtoets.Common.Forms.PresentationObjects;
using Ringtoets.Integration.Forms.Views;

namespace Ringtoets.Integration.Forms.Test.Views
{
    [TestFixture]
    public class FailureMechanismContributionViewTest
    {
        private const string normInputTextBoxName = "normInput";
        private const string dataGridViewControlName = "probabilityDistributionGrid";

        private Form testForm;

        [SetUp]
        public void Setup()
        {
            testForm = new Form();
        }

        [TearDown]
        public void TearDown()
        {
            testForm.Dispose();
        }

        [Test]
        public void NormTextBox_Initialize_TextSetToData()
        {
            // Setup
            var random = new Random(21);
            var norm = random.Next(1, 200000);
            var otherContribution = random.Next(1, 100);

            var mockRepository = new MockRepository();
            var failureMechanism = mockRepository.Stub<IFailureMechanism>();
            var assessmentSection = mockRepository.Stub<IAssessmentSection>();
            mockRepository.ReplayAll();

            var contribution = new FailureMechanismContribution(new[]
            {
                failureMechanism
            }, otherContribution, norm);

            var context = new FailureMechanismContributionContext(contribution, assessmentSection);

            using (var contributionView = new FailureMechanismContributionView
            {
                Data = context
            })
            {
                ShowFormWithView(contributionView);
                var normTester = new ControlTester(normInputTextBoxName);

                // Assert
                Assert.AreEqual(contribution.Norm.ToString(), normTester.Text);
            }
            mockRepository.VerifyAll();
        }

        [Test]
        public void NormTextBox_ValueChanged_UpdatesDataWithNewValue()
        {
            // Setup
            var random = new Random(21);
            var norm = random.Next(1, 200000);
            var otherContribution = random.Next(1, 100);

            var mockRepository = new MockRepository();
            var failureMechanism = mockRepository.Stub<IFailureMechanism>();
            var assessmentSection = mockRepository.Stub<IAssessmentSection>();

            var observerMock = mockRepository.StrictMock<IObserver>();
            observerMock.Expect(o => o.UpdateObserver());

            mockRepository.ReplayAll();

            var distribution = new FailureMechanismContribution(new[]
            {
                failureMechanism
            }, otherContribution, norm);
            distribution.Attach(observerMock);

            var context = new FailureMechanismContributionContext(distribution, assessmentSection);

            using (var distributionView = new FailureMechanismContributionView
            {
                Data = context
            })
            {
                ShowFormWithView(distributionView);
                var normTester = new ControlTester(normInputTextBoxName);

                // Precondition
                Assert.AreEqual(distribution.Norm.ToString(), normTester.Text);

                // Call
                normTester.Properties.Text = 200.ToString();

                // Assert
                Assert.AreEqual(200, distribution.Norm);
            }
            mockRepository.VerifyAll();
        }

        [Test]
        public void Data_SetNewData_DetachesFromOldData()
        {
            // Setup
            var aValue = 100;
            var expectedValue = 200;
            var random = new Random(21);

            var mockRepository = new MockRepository();

            var someMechanism = mockRepository.Stub<IFailureMechanism>();
            var assessmentSection1 = mockRepository.Stub<IAssessmentSection>();
            var assessmentSection2 = mockRepository.Stub<IAssessmentSection>();

            mockRepository.ReplayAll();

            var initialContribution = new FailureMechanismContribution(new[]
            {
                someMechanism
            }, random.Next(0, 100), aValue);
            var newContribution = new FailureMechanismContribution(new[]
            {
                someMechanism
            }, random.Next(0, 100), expectedValue);

            var initialContext = new FailureMechanismContributionContext(initialContribution, assessmentSection1);
            var newContext = new FailureMechanismContributionContext(newContribution, assessmentSection2);

            using (var distributionView = new FailureMechanismContributionView
            {
                Data = initialContext
            })
            {
                ShowFormWithView(distributionView);
                var normTester = new ControlTester(normInputTextBoxName);

                // Precondition
                Assert.AreEqual(aValue.ToString(), normTester.Properties.Text);

                // Call
                distributionView.Data = newContext;

                // Assert
                Assert.AreEqual(expectedValue.ToString(), normTester.Properties.Text);
            }

            mockRepository.VerifyAll();
        }

        [Test]
        public void UpdateObserver_ChangeNormAndNotify_UpdateNormTextBox()
        {
            // Setup
            const int initialValue = 100;
            const int expectedValue = 200;
            var random = new Random(21);

            var mockRepository = new MockRepository();

            var someMechanism = mockRepository.Stub<IFailureMechanism>();
            var assessmentSection1 = mockRepository.Stub<IAssessmentSection>();

            mockRepository.ReplayAll();

            var contribution = new FailureMechanismContribution(new[]
            {
                someMechanism
            }, random.Next(0, 100), initialValue);

            var context = new FailureMechanismContributionContext(contribution, assessmentSection1);

            using (var distributionView = new FailureMechanismContributionView
            {
                Data = context
            })
            {
                ShowFormWithView(distributionView);
                var normTester = new ControlTester(normInputTextBoxName);

                // Precondition
                Assert.AreEqual(initialValue.ToString(), normTester.Properties.Text);

                // Call
                contribution.Norm = expectedValue;
                contribution.NotifyObservers();

                // Assert
                Assert.AreEqual(expectedValue.ToString(), normTester.Properties.Text);
            }

            mockRepository.VerifyAll();
        }

        [Test]
        public void GivenFailureMechanismContributionView_WhenSettingDataWithZeroContributionFailureMechanism_ProbabilitySpaceShowsAsNotApplicable()
        {
            // Given
            using (var view = new FailureMechanismContributionView())
            {
                // When
                var mockRepository = new MockRepository();
                var assessmentSection = mockRepository.Stub<IAssessmentSection>();

                var failureMechanismStub = mockRepository.Stub<IFailureMechanism>();
                failureMechanismStub.Stub(fm => fm.Name).Return("A");
                failureMechanismStub.Contribution = 0;
                mockRepository.ReplayAll();

                var contributionData = new FailureMechanismContribution(new[]
                {
                    failureMechanismStub
                }, 100, 500);
                var context = new FailureMechanismContributionContext(contributionData, assessmentSection);

                view.Data = context;
                ShowFormWithView(view);

                // Then
                var dataGridView = (DataGridView)new ControlTester(dataGridViewControlName).TheObject;

                DataGridViewRow zeroContributionFailureMechanismRow = dataGridView.Rows[0];
                DataGridViewCell probabilitySpaceCell = zeroContributionFailureMechanismRow.Cells[2];
                Assert.AreEqual("n.v.t", probabilitySpaceCell.FormattedValue);

                mockRepository.VerifyAll();
            }
        }

        [Test]
        public void GivenFailureMechanismContributionView_WhenSettingDataWithNormalContributionFailureMechanism_ProbabilitySpaceShowsAsLocalisedText()
        {
            // Given
            using (var view = new FailureMechanismContributionView())
            {
                // When
                const double contribution = 25.0;
                const int norm = 500;

                var mockRepository = new MockRepository();
                var assessmentSection = mockRepository.Stub<IAssessmentSection>();

                var failureMechanismStub = mockRepository.Stub<IFailureMechanism>();
                failureMechanismStub.Stub(fm => fm.Name).Return("A");
                failureMechanismStub.Contribution = contribution;
                mockRepository.ReplayAll();

                var contributionData = new FailureMechanismContribution(new[]
                {
                    failureMechanismStub
                }, 100.0 - contribution, norm);
                var context = new FailureMechanismContributionContext(contributionData, assessmentSection);

                view.Data = context;
                ShowFormWithView(view);

                // Then
                var dataGridView = (DataGridView)new ControlTester(dataGridViewControlName).TheObject;

                DataGridViewRow zeroContributionFailureMechanismRow = dataGridView.Rows[0];
                DataGridViewCell probabilitySpaceCell = zeroContributionFailureMechanismRow.Cells[2];

                string expectedTextValue = new FailureMechanismContributionItem(failureMechanismStub, norm)
                    .ProbabilitySpace.ToString(probabilitySpaceCell.InheritedStyle.Format, probabilitySpaceCell.InheritedStyle.FormatProvider);
                Assert.AreEqual(expectedTextValue, probabilitySpaceCell.FormattedValue);

                mockRepository.VerifyAll();
            }
        }

        private void ShowFormWithView(FailureMechanismContributionView distributionView)
        {
            testForm.Controls.Add(distributionView);
            testForm.Show();
        }
    }
}