// Copyright (C) Stichting Deltares 2020. All rights reserved.
//
// This file is part of the application DAM - UI.
//
// DAM - UI 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 Deltares.Dam.Data.StiImporter;
using NUnit.Framework;

namespace Deltares.Dam.Tests.StiImporter
{
    [TestFixture]
    public class StiFileValidatorTest
    {
        private const string testDataFolder = @"TestData\StiImporter\";

        private static IEnumerable<TestCaseData> GetUnsupportedFileVersions()
        {
            yield return new TestCaseData("InvalidSoilVersion.sti", "Soil");
            yield return new TestCaseData("InvalidGeometryVersion.sti", "Geometry");
            yield return new TestCaseData("InvalidYieldStressVersionWithYieldStresses.sti", "Preconsolidation stress");
        }

        [Test]
        [TestCase(null)]
        [TestCase("")]
        [TestCase("        ")]
        public void Constructor_FilePathNullOrEmpty_ThrowsArgumentException(string filePath)
        {
            // Call
            TestDelegate call = () => new StiFileValidator(filePath);

            // Assert
            Assert.That(call, Throws.ArgumentException
                .With.Message.EqualTo("'filePath' cannot be null or consist of whitespaces only."));
        }

        [Test]
        public void Constructor_FileResultsInIOException_ThrowsStiFileImporterException()
        {
            // Setup
            var nonExistingFile = "DoesNotExist";

            // Call
            TestDelegate call = () => new StiFileValidator(nonExistingFile);

            // Assert
            var exception = Assert.Throws<StiFileImporterException>(call);
            Exception innerException = exception.InnerException;
            Assert.That(innerException, Is.InstanceOf<IOException>());
            Assert.That(exception.Message, Is.EqualTo(innerException.Message));
        }

        [Test]
        [TestCase("Tutorial-1a 10.1.4.3.sti")]
        [TestCase("Tutorial-1a 14.1.2.1.sti")]
        [TestCase("Tutorial-1a 16.1.2.1.sti")]
        public void GivenValidatorWithSupportedFileVersions_WhenValidateCalled_ThenNoValidationMessages(string fileName)
        {
            // Setup
            string filePath = Path.Combine(testDataFolder, fileName);
            var fileValidator = new StiFileValidator(filePath);

            // Call
            var validationMessages = fileValidator.Validate();

            // Assert
            CollectionAssert.IsEmpty(validationMessages);
        }

        [Test]
        public void GivenValidatorWithSupportedFormat_WhenValidateFileFormatCalled_ThenNoValidationMessages()
        {
            // Setup
            string filePath = Path.Combine(testDataFolder, "Tutorial-1a 10.1.4.3.sti");
            var fileValidator = new StiFileValidator(filePath);

            // Call
            var messages = fileValidator.Validate();

            // Assert
            CollectionAssert.IsEmpty(messages);
        }

        [Test]
        [TestCaseSource(nameof(GetUnsupportedFileVersions))]
        public void GivenValidatorWithUnsupportedFileVersions_WhenValidateFileVersionCalled_ThenStiFileImporterExceptionThrown(
            string fileName,
            string propertyName)
        {
            // Given
            string filePath = Path.Combine(testDataFolder, fileName);
            var fileValidator = new StiFileValidator(filePath);

            // When
            var messages = fileValidator.Validate();

            // Then
            string expectedErrorMessage = $"{propertyName} data in '{filePath}' is of a version of D-Geo Stability that is not supported and cannot be read";
            CollectionAssert.AreEqual(new[]
            {
                expectedErrorMessage
            }, messages);
        }

        [Test]
        [TestCase("GeoFile.geo")]
        [TestCase("SeepFile.SEI")]
        public void GivenValidatorWithUnsupportedFormat_WhenValidateFileFormatCalled_ThenStiFileImporterExceptionThrown(string fileName)
        {
            // Given
            string filePath = Path.Combine(testDataFolder, fileName);
            var fileValidator = new StiFileValidator(filePath);

            // When
            var messages = fileValidator.Validate();

            // Then
            CollectionAssert.AreEqual(new[]
            {
                $"{filePath} is not a D-Geo Stability file (*.sti)."
            }, messages);
        }
    }
}