// 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.IO;
using System.Linq;
using Core.Common.Base.Geometry;
using Core.Common.IO.Exceptions;
using Core.Common.TestUtil;
using NUnit.Framework;
using Ringtoets.Common.Data.AssessmentSection;

namespace Ringtoets.Common.IO.Test
{
    [TestFixture]
    public class ReferenceLinesMetaReaderTest
    {
        private readonly string testDataPath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Common.IO, "NBPW");

        [Test]
        [TestCase("")]
        [TestCase("      ")]
        [TestCase(null)]
        public void ReadReferenceLinesMetas_NoFilePath_ThrowArgumentException(string invalidFilePath)
        {
            // Call
            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert
            var expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': Bestandspad mag niet leeg of ongedefinieerd zijn.",
                                                invalidFilePath);
            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentException>(call, expectedMessage);
        }

        [Test]
        public void ReadReferenceLinesMetas_FilePathHasInvalidPathCharacter_ThrowArgumentException()
        {
            // Setup
            char[] invalidFileNameChars = Path.GetInvalidFileNameChars();

            string validFilePath = Path.Combine(testDataPath, "NBPW.shp");
            string invalidFilePath = validFilePath.Replace("P", invalidFileNameChars[1].ToString());

            // Call
            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert
            var expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': Bestandspad mag niet de volgende tekens bevatten: {1}",
                                                invalidFilePath, String.Join(", ", invalidFileNameChars));
            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentException>(call, expectedMessage);
        }

        [Test]
        public void ReadReferenceLinesMetas_FilePathIsActuallyDirectoryPath_ThrowArgumentException()
        {
            // Setup
            string invalidFilePath = Path.Combine(testDataPath, Path.DirectorySeparatorChar.ToString());

            // Call
            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert
            var expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': Bestandspad mag niet verwijzen naar een lege bestandsnaam.",
                                                invalidFilePath);
            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentException>(call, expectedMessage);
        }

        [Test]
        public void ReadReferenceLinesMetas_ShapefileDoesntExist_ThrowCriticalFileReadException()
        {
            // Setup
            string invalidFilePath = Path.Combine(testDataPath, "I_do_not_exist.shp");

            // Call
            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert
            var expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': Het bestand bestaat niet.",
                                                invalidFilePath);
            var message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        [TestCase("Multiple_Point_with_ID.shp")]
        [TestCase("Multiple_Polygon_with_ID.shp")]
        [TestCase("Single_Multi-Polygon_with_ID.shp")]
        [TestCase("Single_Point_with_ID.shp")]
        [TestCase("Single_Polygon_with_ID.shp")]
        public void ReadReferenceLinesMetas_ShapefileDoesNotHaveSinglePolyline_ThrowCriticalFileReadException(string shapeFileName)
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Core.Components.Gis.IO, shapeFileName);

            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert .
            var expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': Bestand bevat geometrieën die geen lijn zijn.",
                                                invalidFilePath);
            var message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        [TestCase("NBPW_MultiPolyLines.shp")]
        public void ReadReferenceLinesMeta_ShapefileHasMultiplePolylines_ThrowCriticalFileReadException(string shapeFileName)
        {
            // Setup
            string invalidFilePath = Path.Combine(testDataPath, shapeFileName);

            // Call
            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(invalidFilePath);

            // Assert
            var expectedMessage = "Het bestand bevat een multi-polylijn. Multi-polylijnen worden niet ondersteund.";
            var message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        [TestCase("NBPW_missingTrajectId.shp", "TRAJECT_ID")]
        [TestCase("NBPW_missingNORM_SW.shp", "NORM_SW")]
        [TestCase("NBPW_missingNORM_OG.shp", "NORM_OG")]
        public void ReadReferenceLinesMetas_FileLacksAttribute_ThrowCriticalFileReadException(string shapeFileName, string missingAttribute)
        {
            // Setup
            string validFilePath = Path.Combine(testDataPath, shapeFileName);

            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(validFilePath);

            // Assert
            var message = Assert.Throws<CriticalFileReadException>(call).Message;
            var expectedMessage = String.Format("Het bestand heeft geen attribuut '{0}'. Dit attribuut is vereist.",
                                                missingAttribute);
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        [TestCase("NBPW_missingAllAttributes.shp", "TRAJECT_ID', 'NORM_SW', 'NORM_OG")]
        [TestCase("NBPW_missingTrajectIdAndNORM_SW.shp", "TRAJECT_ID', 'NORM_SW")]
        [TestCase("NBPW_missingTrajectIdAndNORM_OG.shp", "TRAJECT_ID', 'NORM_OG")]
        [TestCase("NBPW_missingNORM_SWAndNORM_OG.shp", "NORM_SW', 'NORM_OG")]
        public void ReadReferenceLinesMetas_FileLacksAttributes_ThrowCriticalFileReadException(string shapeFileName, string missingAttributes)
        {
            // Setup
            string validFilePath = Path.Combine(testDataPath, shapeFileName);

            TestDelegate call = () => ReferenceLinesMetaReader.ReadReferenceLinesMetas(validFilePath);

            // Assert
            var message = Assert.Throws<CriticalFileReadException>(call).Message;
            var expectedMessage = String.Format("Het bestand heeft de attributen '{0}' niet. Deze attributen zijn vereist.",
                                                missingAttributes);
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        public void ReadReferenceLinesMeta_ValidFilePath_ReturnsElement()
        {
            // Setup
            var validFilePath = Path.Combine(testDataPath, "NBPW.shp");

            // Call
            List<ReferenceLineMeta> referenceLineMetas = ReferenceLinesMetaReader.ReadReferenceLinesMetas(validFilePath);

            // Assert
            Assert.AreEqual(3, referenceLineMetas.Count);

            var expectedReferenceLineMeta1 = new ReferenceLineMeta
            {
                AssessmentSectionId = "1-1",
                LowerLimitValue = 1000,
                SignalingValue = 3000
            };
            expectedReferenceLineMeta1.ReferenceLine.SetGeometry(new[]
            {
                new Point2D(160679.9250, 475072.583),
                new Point2D(160892.0751, 474315.4917)
            });
            AssertReferenceLineMetas(expectedReferenceLineMeta1, referenceLineMetas[0]);

            var expectedReferenceLineMeta2 = new ReferenceLineMeta
            {
                AssessmentSectionId = "2-2",
                LowerLimitValue = 100,
                SignalingValue = 300
            };
            expectedReferenceLineMeta2.ReferenceLine.SetGeometry(new[]
            {
                new Point2D(155556.9191, 464341.1281),
                new Point2D(155521.4761, 464360.7401)
            });
            AssertReferenceLineMetas(expectedReferenceLineMeta2, referenceLineMetas[1]);

            var expectedReferenceLineMeta3 = new ReferenceLineMeta
            {
                AssessmentSectionId = "3-3",
                LowerLimitValue = 100,
                SignalingValue = 300
            };
            expectedReferenceLineMeta3.ReferenceLine.SetGeometry(new[]
            {
                new Point2D(147367.321899, 476902.915710),
                new Point2D(147410.0515, 476938.9447)
            });
            AssertReferenceLineMetas(expectedReferenceLineMeta3, referenceLineMetas[2]);
        }

        [Test]
        public void ReadReferenceLinesMeta_EmptyNormOgAndNormSw_ReturnsElement()
        {
            // Setup
            var validFilePath = Path.Combine(testDataPath, "NBPW_EmptyNormOGAndNormSW.shp");

            // Call
            List<ReferenceLineMeta> referenceLineMetas = ReferenceLinesMetaReader.ReadReferenceLinesMetas(validFilePath);

            // Assert
            Assert.AreEqual(1, referenceLineMetas.Count);

            var referenceLineMeta = referenceLineMetas.First();
            Assert.AreEqual("46-1", referenceLineMeta.AssessmentSectionId);
            Assert.IsNull(referenceLineMeta.SignalingValue);
            Assert.IsNull(referenceLineMeta.LowerLimitValue);
        }

        [Test]
        public void ReadReferenceLinesMeta_EmptyTrackId_ReturnsElement()
        {
            // Setup
            string validFilePath = Path.Combine(testDataPath, "NBPW_EmptyTrackId.shp");

            // Call
            List<ReferenceLineMeta> referenceLineMetas = ReferenceLinesMetaReader.ReadReferenceLinesMetas(validFilePath);

            // Assert
            Assert.AreEqual(1, referenceLineMetas.Count);
            var referenceLineMeta = referenceLineMetas.First();
            Assert.AreEqual(string.Empty, referenceLineMeta.AssessmentSectionId);
        }

        private static void AssertReferenceLineMetas(ReferenceLineMeta expectedReferenceLineMeta, ReferenceLineMeta actualReferenceLineMeta)
        {
            Assert.AreEqual(expectedReferenceLineMeta.AssessmentSectionId, actualReferenceLineMeta.AssessmentSectionId);
            Assert.AreEqual(expectedReferenceLineMeta.SignalingValue, actualReferenceLineMeta.SignalingValue);
            Assert.AreEqual(expectedReferenceLineMeta.LowerLimitValue, actualReferenceLineMeta.LowerLimitValue);

            var expectedPoints = expectedReferenceLineMeta.ReferenceLine.Points.ToArray();
            var actualPoints = actualReferenceLineMeta.ReferenceLine.Points.ToArray();
            var errorMessage = String.Format("Unexpected geometry found in ReferenceLineMeta with id '{0}'", actualReferenceLineMeta.AssessmentSectionId);
            Assert.AreEqual(expectedPoints.Length, actualPoints.Length, errorMessage);

            for (var i = 0; i < expectedPoints.Length; i++)
            {
                Assert.AreEqual(expectedPoints[i].X, actualPoints[i].X, 1e-6, errorMessage);
                Assert.AreEqual(expectedPoints[i].Y, actualPoints[i].Y, 1e-6, errorMessage);
            }
        }
    }
}