// Copyright (C) Stichting Deltares 2017. 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.IO;
using System.Linq;
using Core.Common.Base.Geometry;
using Core.Common.Base.IO;
using Core.Common.TestUtil;
using NUnit.Framework;
using Ringtoets.Common.Data.AssessmentSection;
using Ringtoets.Common.IO.ReferenceLines;

namespace Ringtoets.Common.IO.Test.ReferenceLines
{
    [TestFixture]
    public class ReferenceLineReaderTest
    {
        [Test]
        public void ReadReferenceLine_FileHasOneValidLineInShape_ReturnReferenceLine()
        {
            // Setup
            string validReferenceLineShapeFile = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Common.IO,
                                                                            Path.Combine("ReferenceLine", "traject_10-2.shp"));
            var reader = new ReferenceLineReader();

            // Call
            ReferenceLine referenceLine = reader.ReadReferenceLine(validReferenceLineShapeFile);

            // Assert
            Point2D[] point2Ds = referenceLine.Points.ToArray();
            Assert.AreEqual(803, point2Ds.Length);
            Assert.AreEqual(193527.156, point2Ds[465].X, 1e-6);
            Assert.AreEqual(511438.281, point2Ds[465].Y, 1e-6);
            Assert.AreEqual(191144.375, point2Ds[800].X, 1e-6);
            Assert.AreEqual(508840.469, point2Ds[800].Y, 1e-6);
        }

        [Test]
        [TestCase("")]
        [TestCase("      ")]
        [TestCase(null)]
        public void ReadReferenceLine_NoFilePath_ThrowArgumentException(string invalidFilePath)
        {
            // Setup
            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string 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 ReadReferenceLine_FilePathHasInvalidPathCharacter_ThrowArgumentException()
        {
            // Setup
            char[] invalidPathChars = Path.GetInvalidPathChars();

            string validFilePath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Common.IO,
                                                              "traject_10-1.shp");
            string invalidFilePath = validFilePath.Replace("_", invalidPathChars[3].ToString());

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string expectedMessage = $"Fout bij het lezen van bestand '{invalidFilePath}': "
                                     + "er zitten ongeldige tekens in het bestandspad. Alle tekens in het bestandspad moeten geldig zijn.";
            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentException>(call, expectedMessage);
        }

        [Test]
        public void ReadReferenceLine_FilePathIsActuallyDirectoryPath_ThrowArgumentException()
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Common.IO,
                                                                Path.DirectorySeparatorChar.ToString());

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string 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 ReadReferenceLine_ShapefileDoesntExist_ThrowCriticalFileReadException()
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.Common.IO,
                                                                "I_do_not_exist.shp");

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': het bestand bestaat niet.",
                                                   invalidFilePath);
            string 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 ReadReferenceLine_ShapefileContainsOtherThanPolyline_ThrowCriticalFileReadException(string shapeFileName)
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Core.Components.Gis.IO,
                                                                shapeFileName);

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': kon geen lijnen vinden in dit bestand.",
                                                   invalidFilePath);
            string message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        [TestCase("Empty_PolyLine_with_ID.shp")]
        [TestCase("Multiple_PolyLine_with_ID.shp")]
        public void ReadReferenceLine_ShapefileDoesNotHaveSinglePolyline_ThrowCriticalFileReadException(string shapeFileName)
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Core.Components.Gis.IO,
                                                                shapeFileName);

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': het bestand moet exact één gehele polylijn bevatten.",
                                                   invalidFilePath);
            string message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        public void ReadReferenceLine_ShapefileHasSingleMultiPolyline_ThrowCriticalFileReadException()
        {
            // Setup
            string invalidFilePath = TestHelper.GetTestDataPath(TestDataPath.Core.Components.Gis.IO,
                                                                "Single_Multi-PolyLine_with_ID.shp");

            var reader = new ReferenceLineReader();

            // Call
            TestDelegate call = () => reader.ReadReferenceLine(invalidFilePath);

            // Assert
            string expectedMessage = string.Format("Fout bij het lezen van bestand '{0}': het bestand bevat een multi-polylijn. Multi-polylijnen worden niet ondersteund.",
                                                   invalidFilePath);
            string message = Assert.Throws<CriticalFileReadException>(call).Message;
            Assert.AreEqual(expectedMessage, message);
        }

        [Test]
        public void ReadReferenceLine_FileInUse_ThrowCriticalFileReadException()
        {
            // Setup
            var reader = new ReferenceLineReader();
            string path = TestHelper.GetScratchPadPath(nameof(ReadReferenceLine_FileInUse_ThrowCriticalFileReadException));

            using (var fileDisposeHelper = new FileDisposeHelper(path))
            {
                fileDisposeHelper.LockFiles();

                // Call
                TestDelegate call = () => reader.ReadReferenceLine(path);

                // Assert
                string expectedMessage = $"Fout bij het lezen van bestand '{path}': het bestand kon niet worden geopend. Mogelijk is het bestand corrupt of in gebruik door een andere applicatie.";
                var exception = Assert.Throws<CriticalFileReadException>(call);
                Assert.AreEqual(expectedMessage, exception.Message);
                Assert.IsInstanceOf<IOException>(exception.InnerException);
            }
        }
    }
}