// Copyright (C) Stichting Deltares 2019. All rights reserved.
//
// This file is part of the Dam Engine.
//
// The Dam Engine is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero 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.IO;
using System.Text;
using Deltares.DamEngine.Interface;
using Deltares.DamEngine.Io;
using Deltares.DamEngine.Io.XmlOutput;
using Deltares.DamEngine.TestHelpers;
using NUnit.Framework;

namespace Deltares.DamEngine.IntegrationTests.IntegrationTests
{
    /// <summary>
    /// These tests were based on DamLiveIntegrationTest.Run_UsingTestFiles_HasExpectedResultsInOutputFile()
    /// </summary>
    [TestFixture]
    class OperationalIntegrationTests
    {
        private const double tolerance = 0.0005;

        [Test]
        public void Run_UsingTestFiles_HasExpectedResultsInOutputFile()
        {
            const string calcDir = "TestOperationalIntegration";
            if (Directory.Exists(calcDir))
            {
                Directory.Delete(calcDir, true); // delete previous results
            }

            Directory.CreateDirectory(calcDir);

            // Based on "DamLive\trunk\src\Deltares.DamLive.Tests\TestData\DamLive\Set2\\output.damx"
            const string inputFileName = @"TestFiles\OperationalSet2.xml";
            const string outputFileName = @"TestFiles\OperationalSet2.output.xml";
            string inputString = File.ReadAllText(inputFileName);
            inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
            inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
            inputString = XmlAdapter.ChangeValueInXml(inputString, "MapForSoilgeometries2D", @"TestFiles\output.Geometries\");
            inputString = XmlAdapter.ChangeValueInXml(inputString, "SoilDatabaseName", @"TestFiles\output0.soilmaterials.mdb");
            EngineInterface engineInterface = new EngineInterface(inputString);
            Assert.IsNotNull(engineInterface.DamProjectData);
            string outputString = engineInterface.Run();
            File.WriteAllText(outputFileName, outputString, Encoding.Unicode);
            Assert.IsNotNull(outputString);
            var output = DamXmlSerialization.LoadOutputFromXmlString(outputString);
            Assert.AreEqual(1.226, output.Results.OperationalOutputTimeSeries[0].Entries.TimeSerieEntry[0].Value, tolerance);
            Assert.AreEqual(1.244, output.Results.OperationalOutputTimeSeries[1].Entries.TimeSerieEntry[0].Value, tolerance);
            Assert.AreEqual(1.311, output.Results.OperationalOutputTimeSeries[2].Entries.TimeSerieEntry[0].Value, tolerance);

        }

        [Test]
        // This test runs the same project as Run_UsingTestFiles_HasExpectedResultsInOutputFile
        // except that it runs it with both single core and multi core.
        // The output of both runs must be the same
        public void CompareResultFromMultiCoreRunWithSingleCoreRun()
        {
            var calcDir = "TestOperationalIntegrationSingleCore";
            var outputFileName = @"TestFiles\OperationalSet2SingleCore.output.xml";
            var output = RunTestProjectCores(calcDir, outputFileName, 1);
            var outputSingleCore = DamXmlSerialization.SaveOutputAsXmlString(output);

            calcDir = "TestOperationalIntegrationMultiCore";
            outputFileName = @"TestFiles\OperationalSet2MultiCore.output.xml";
            output = RunTestProjectCores(calcDir, outputFileName, 4);
            var outputMultiCore = DamXmlSerialization.SaveOutputAsXmlString(output);

            Assert.AreEqual(outputSingleCore, outputMultiCore);
        }

        private Output RunTestProjectCores(string calcDir, string outputFileName, int coreCount)
        {
            if (Directory.Exists(calcDir))
            {
                Directory.Delete(calcDir, true); // delete previous results
            }

            Directory.CreateDirectory(calcDir);

            const string inputFileName = @"TestFiles\OperationalSet2.xml";
            string inputString = File.ReadAllText(inputFileName);
            inputString = XmlAdapter.ChangeValueInXml(inputString, "ProjectPath", ""); // Current directory will be used
            inputString = XmlAdapter.ChangeValueInXml(inputString, "CalculationMap", calcDir); // Current directory will be used
            inputString = XmlAdapter.ChangeValueInXml(inputString, "MapForSoilgeometries2D", @"TestFiles\output.Geometries\");
            inputString = XmlAdapter.ChangeValueInXml(inputString, "SoilDatabaseName", @"TestFiles\output0.soilmaterials.mdb");
            inputString = XmlAdapter.ChangeValueInXml(inputString, "MaxCalculationCores", coreCount.ToString());
            EngineInterface engineInterface = new EngineInterface(inputString);
            Assert.IsNotNull(engineInterface.DamProjectData);
            string outputString = engineInterface.Run();
            File.WriteAllText(outputFileName, outputString, Encoding.Unicode);
            Assert.IsNotNull(outputString);
            return DamXmlSerialization.LoadOutputFromXmlString(outputString);
        }

    }
}