// Copyright (C) Stichting Deltares 2016. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Core.Common.Base.Data;
using Core.Common.Base.Geometry;
using NUnit.Extensions.Forms;
using NUnit.Framework;
using Ringtoets.Common.Data.FailureMechanism;
using Ringtoets.Common.Data.TestUtil;
using Ringtoets.Common.Forms.Views;
using Ringtoets.StabilityPointStructures.Data;
using Ringtoets.StabilityPointStructures.Forms.Views;
using RingtoetsCommonFormsResources = Ringtoets.Common.Forms.Properties.Resources;

namespace Ringtoets.StabilityPointStructures.Forms.Test.Views
{
    [TestFixture]
    public class StabilityPointStructuresFailureMechanismResultViewTest
    {
        private const int nameColumnIndex = 0;
        private const int assessmentLayerOneIndex = 1;
        private const int assessmentLayerTwoAIndex = 2;
        private const int assessmentLayerThreeIndex = 3;

        private Form testForm;

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

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

        [Test]
        public void DefaultConstructor_DefaultValues()
        {
            // Call
            using (var view = new StabilityPointStructuresFailureMechanismResultView())
            {
                // Assert
                Assert.IsInstanceOf<FailureMechanismResultView<StabilityPointStructuresFailureMechanismSectionResult>>(view);
                Assert.IsNull(view.Data);
            }
        }

        [Test]
        public void Data_DataAlreadySetNewDataSet_DataSetAndDataGridViewUpdated()
        {
            // Setup
            using (StabilityPointStructuresFailureMechanismResultView view = CreateConfiguredFailureMechanismResultsView())
            {
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;

                var points = new[]
                {
                    new Point2D(1, 2),
                    new Point2D(3, 4)
                };

                var section = new FailureMechanismSection("test", points);
                var sectionResult = new StabilityPointStructuresFailureMechanismSectionResult(section);
                var testData = new List<StabilityPointStructuresFailureMechanismSectionResult>
                {
                    sectionResult
                };

                // Precondition
                Assert.AreEqual(2, dataGridView.RowCount);

                // Call
                view.Data = testData;

                // Assert
                Assert.AreSame(testData, view.Data);

                Assert.AreEqual(testData.Count, dataGridView.RowCount);
                Assert.AreEqual(sectionResult.Section.Name, dataGridView.Rows[0].Cells[0].Value);
            }
        }

        [Test]
        public void Data_SetOtherThanFailureMechanismSectionResultListData_DataNullAndDataGridViewEmtpy()
        {
            // Setup
            var testData = new object();
            using (StabilityPointStructuresFailureMechanismResultView view = CreateConfiguredFailureMechanismResultsView())
            {
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;

                // Call
                view.Data = testData;

                // Assert
                Assert.IsNull(view.Data);

                Assert.AreEqual(0, dataGridView.RowCount);
            }
        }

        [Test]
        public void GivenFailureMechanismResultsView_WhenAllDataSet_ThenDataGridViewCorrectlyInitialized()
        {
            // Given
            using (CreateConfiguredFailureMechanismResultsView())
            {
                // Then
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;

                DataGridViewRowCollection rows = dataGridView.Rows;
                Assert.AreEqual(2, rows.Count);

                DataGridViewCellCollection cells = rows[0].Cells;
                Assert.AreEqual(4, cells.Count);
                Assert.AreEqual("Section 1", cells[nameColumnIndex].FormattedValue);
                Assert.IsFalse((bool)cells[assessmentLayerOneIndex].FormattedValue);
                Assert.AreEqual("-", cells[assessmentLayerTwoAIndex].FormattedValue);
                Assert.AreEqual("-", cells[assessmentLayerThreeIndex].FormattedValue);

                cells = rows[1].Cells;
                Assert.AreEqual(4, cells.Count);
                Assert.AreEqual("Section 2", cells[nameColumnIndex].FormattedValue);
                Assert.IsFalse((bool)cells[assessmentLayerOneIndex].FormattedValue);
                Assert.AreEqual("-", cells[assessmentLayerTwoAIndex].FormattedValue);
                Assert.AreEqual("-", cells[assessmentLayerThreeIndex].FormattedValue);
            }
        }

        [Test]
        public void GivenFormWithFailureMechanismResultView_ThenExpectedColumnsAreVisible()
        {
            // Given
            using (ShowFailureMechanismResultsView())
            {
                // Then
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;

                Assert.AreEqual(4, dataGridView.ColumnCount);

                Assert.IsInstanceOf<DataGridViewCheckBoxColumn>(dataGridView.Columns[assessmentLayerOneIndex]);
                Assert.IsInstanceOf<DataGridViewTextBoxColumn>(dataGridView.Columns[assessmentLayerTwoAIndex]);
                Assert.IsInstanceOf<DataGridViewTextBoxColumn>(dataGridView.Columns[assessmentLayerThreeIndex]);

                Assert.AreEqual(
                    RingtoetsCommonFormsResources.FailureMechanismResultView_InitializeDataGridView_Assessment_layer_one,
                    dataGridView.Columns[assessmentLayerOneIndex].HeaderText);
                Assert.AreEqual(
                    RingtoetsCommonFormsResources.FailureMechanismResultView_InitializeDataGridView_Assessment_layer_two_a,
                    dataGridView.Columns[assessmentLayerTwoAIndex].HeaderText);
                Assert.AreEqual(
                    RingtoetsCommonFormsResources.FailureMechanismResultView_InitializeDataGridView_Assessment_layer_three,
                    dataGridView.Columns[assessmentLayerThreeIndex].HeaderText);

                Assert.AreEqual(DataGridViewAutoSizeColumnsMode.AllCells, dataGridView.AutoSizeColumnsMode);
                Assert.AreEqual(DataGridViewContentAlignment.MiddleCenter, dataGridView.ColumnHeadersDefaultCellStyle.Alignment);
            }
        }

        [Test]
        public void GivenFormWithFailureMechanismResultView_WhenDataSourceWithFailureMechanismSectionResultAssigned_ThenSectionsAddedAsRows()
        {
            // Given
            var section1 = new FailureMechanismSection("Section 1", new[]
            {
                new Point2D(0, 0)
            });
            var section2 = new FailureMechanismSection("Section 2", new[]
            {
                new Point2D(0, 0)
            });
            Random random = new Random(21);
            var result1 = new StabilityPointStructuresFailureMechanismSectionResult(section1)
            {
                AssessmentLayerOne = true,
                AssessmentLayerThree = (RoundedDouble)random.NextDouble()
            };
            var result2 = new StabilityPointStructuresFailureMechanismSectionResult(section2)
            {
                AssessmentLayerOne = false,
                AssessmentLayerThree = (RoundedDouble)random.NextDouble()
            };

            using (var view = ShowFailureMechanismResultsView())
            {
                // When
                view.Data = new[]
                {
                    result1,
                    result2
                };

                // Then
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;
                DataGridViewRowCollection rows = dataGridView.Rows;
                Assert.AreEqual(2, rows.Count);

                DataGridViewCellCollection cells = rows[0].Cells;
                Assert.AreEqual(4, cells.Count);
                Assert.AreEqual("Section 1", cells[nameColumnIndex].FormattedValue);
                Assert.AreEqual(result1.AssessmentLayerOne, cells[assessmentLayerOneIndex].Value);

                Assert.AreEqual("-", cells[assessmentLayerTwoAIndex].FormattedValue);
                Assert.AreEqual(result1.AssessmentLayerThree.ToString(), cells[assessmentLayerThreeIndex].FormattedValue);

                AssertCellIsDisabled(cells[assessmentLayerTwoAIndex]);
                AssertCellIsDisabled(cells[assessmentLayerThreeIndex]);

                cells = rows[1].Cells;
                Assert.AreEqual(4, cells.Count);
                Assert.AreEqual("Section 2", cells[nameColumnIndex].FormattedValue);
                Assert.AreEqual(result2.AssessmentLayerOne, cells[assessmentLayerOneIndex].Value);
                Assert.AreEqual("-", cells[assessmentLayerTwoAIndex].FormattedValue);
                Assert.AreEqual(result2.AssessmentLayerThree.ToString(), cells[assessmentLayerThreeIndex].FormattedValue);

                AssertCellIsEnabled(cells[assessmentLayerTwoAIndex], true);
                AssertCellIsEnabled(cells[assessmentLayerThreeIndex]);
            }
        }

        [Test]
        public void GivenFormWithFailureMechanismResultView_WhenSectionPassesLevel0AndListenersNotified_ThenRowsForSectionBecomesDisabled()
        {
            // Given
            var section = new FailureMechanismSection("Section 1", new[]
            {
                new Point2D(0, 0)
            });
            Random random = new Random(21);
            var result = new StabilityPointStructuresFailureMechanismSectionResult(section)
            {
                AssessmentLayerOne = false,
                AssessmentLayerThree = (RoundedDouble)random.NextDouble()
            };
            using (var view = ShowFailureMechanismResultsView())
            {
                view.Data = new[]
                {
                    result
                };

                // When
                result.AssessmentLayerOne = true;
                result.NotifyObservers();

                // Then
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;
                DataGridViewRowCollection rows = dataGridView.Rows;
                Assert.AreEqual(1, rows.Count);

                DataGridViewCellCollection cells = rows[0].Cells;
                Assert.AreEqual(4, cells.Count);

                AssertCellIsDisabled(cells[assessmentLayerTwoAIndex]);
                AssertCellIsDisabled(cells[assessmentLayerThreeIndex]);
            }
        }

        [Test]
        public void GivenFormWithFailureMechanismResultView_WhenDataSourceWithOtherFailureMechanismSectionResultAssigned_ThenSectionsNotAdded()
        {
            // Given
            var section1 = new FailureMechanismSection("Section 1", new[]
            {
                new Point2D(0, 0)
            });
            var section2 = new FailureMechanismSection("Section 2", new[]
            {
                new Point2D(0, 0)
            });
            var result1 = new TestFailureMechanismSectionResult(section1);
            var result2 = new TestFailureMechanismSectionResult(section2);

            using (var view = ShowFailureMechanismResultsView())
            {
                // When
                view.Data = new[]
                {
                    result1,
                    result2
                };

                // Then
                var dataGridView = (DataGridView)new ControlTester("dataGridView").TheObject;
                DataGridViewRowCollection rows = dataGridView.Rows;
                Assert.AreEqual(0, rows.Count);
            }
        }

        private static void AssertCellIsDisabled(DataGridViewCell dataGridViewCell)
        {
            Assert.AreEqual(true, dataGridViewCell.ReadOnly);
            Assert.AreEqual(Color.FromKnownColor(KnownColor.GrayText), dataGridViewCell.Style.ForeColor);
            Assert.AreEqual(Color.FromKnownColor(KnownColor.DarkGray), dataGridViewCell.Style.BackColor);
        }

        private static void AssertCellIsEnabled(DataGridViewCell dataGridViewCell, bool readOnly = false)
        {
            Assert.AreEqual(readOnly, dataGridViewCell.ReadOnly);
            Assert.AreEqual(Color.FromKnownColor(KnownColor.ControlText), dataGridViewCell.Style.ForeColor);
            Assert.AreEqual(Color.FromKnownColor(KnownColor.White), dataGridViewCell.Style.BackColor);
        }

        private StabilityPointStructuresFailureMechanismResultView CreateConfiguredFailureMechanismResultsView()
        {
            var failureMechanism = new StabilityPointStructuresFailureMechanism();

            failureMechanism.AddSection(new FailureMechanismSection("Section 1", new List<Point2D>
            {
                new Point2D(0.0, 0.0),
                new Point2D(5.0, 0.0)
            }));

            failureMechanism.AddSection(new FailureMechanismSection("Section 2", new List<Point2D>
            {
                new Point2D(5.0, 0.0),
                new Point2D(10.0, 0.0)
            }));

            var failureMechanismResultView = ShowFailureMechanismResultsView();
            failureMechanismResultView.Data = failureMechanism.SectionResults;
            failureMechanismResultView.FailureMechanism = failureMechanism;

            return failureMechanismResultView;
        }

        private StabilityPointStructuresFailureMechanismResultView ShowFailureMechanismResultsView()
        {
            var failureMechanismResultView = new StabilityPointStructuresFailureMechanismResultView();
            testForm.Controls.Add(failureMechanismResultView);
            testForm.Show();

            return failureMechanismResultView;
        }
    }
}