// Copyright (C) Stichting Deltares 2023. 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;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Threading;
using System.Linq;
using Deltares.DamEngine.Data.General;
using Deltares.DamEngine.Interface;
using Deltares.DamEngine.Io;
using Deltares.DamEngine.Io.XmlOutput;
using Deltares.DamEngine.TestHelpers;
using NUnit.Framework;
using TimeSerie = Deltares.DamEngine.Io.XmlOutput.TimeSerie;
using Deltares.DamEngine.Calculators.DikesOperational;
using Deltares.DamEngine.Data.General.TimeSeries;

namespace Deltares.DamEngine.IntegrationTests.IntegrationTests;

[TestFixture]
public class MultiCoreMacroStabilityTests
{
    private const string mapTestFiles = @"TestFiles\";
    const string testWorkingFolder = @"MultiCore\";

    [OneTimeSetUp]
    public void Setup()
    {
        RemoveTestWorkingDirectory(testWorkingFolder); // to be sure no test directory exist from previous tests
    }

    [OneTimeTearDown]
    public void TearDown()
    {
        RemoveTestWorkingDirectory(testWorkingFolder); // to be sure no test directory exist after the tests
    }

    [Test] //, Category("MultiCore")]
    [Category(Categories.WorkInProgress)]
    [TestCase("OperationalBishopGrid1Core.xml")]
    [TestCase("OperationalBishopGrid2Cores.xml")]
    [TestCase("OperationalBishopGrid4Cores.xml")]
    [TestCase("OperationalBishopGrid8Cores.xml")]
    [TestCase("OperationalBishopGrid18Cores.xml")]
    public void OperationalBishopGridTestsWithXmlInputFile(string aFileName)
    {
        //const string inputFilename = "InputForDebugging.xml"; // or put your own name here;
        string fullInputFilename = Path.Combine(mapTestFiles, aFileName);
        Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
        string inputString = File.ReadAllText(fullInputFilename);
        var engineInterface = new EngineInterface(inputString);
        Assert.IsNotNull(engineInterface.DamProjectData);
        engineInterface.DamProjectData.ProjectPath = @"MultiCore\";
        string result = engineInterface.Validate();
        Assert.IsNull(result, "Validation must succeed but does not, see output xml in debugger");
        string outputString = engineInterface.Run();
        File.WriteAllText("Output.xml", outputString);
        Output output = DamXmlSerialization.LoadOutputFromXmlString(outputString);
        int errorCount = GeneralHelper.DetermineNumberOfCalculationErrors(engineInterface.DamProjectData.CalculationMessages);
        Assert.AreEqual(0, errorCount, "There should be nor errors during the calculation.");
        Assert.AreEqual(output.Results.CalculationMessages.Length, engineInterface.DamProjectData.CalculationMessages.Count);  
        if (engineInterface.DamProjectData.DamProjectType == DamProjectType.Design)
        {
            Assert.AreNotEqual(null, output.Results.CalculationResults);
        }
        else
        {
            Assert.AreEqual(8, output.Results.OperationalOutputTimeSeries.Length);
            int numberOfResults = 0;
            int numberOfRealResults = 0;
            foreach (TimeSerie resultSerie in output.Results.OperationalOutputTimeSeries)
            {
                numberOfResults += resultSerie.Entries.TimeSerieEntry.Length;
                foreach (TimeSerieEntriesTimeSerieEntry timeSerieEntriesTimeSerieEntry in resultSerie.Entries.TimeSerieEntry)
                {
                    if (!Double.IsNaN(timeSerieEntriesTimeSerieEntry.Value) && (timeSerieEntriesTimeSerieEntry.Value > 0) &&
                        (timeSerieEntriesTimeSerieEntry.Value < 100000))
                    {
                        numberOfRealResults++;
                    }
                }
            }
            Assert.AreEqual(16, numberOfResults);
            Assert.AreEqual(16, numberOfRealResults);
        }
    }

    [Test, Category("MultiCore")]
    [TestCase("DesignBishopGrid1Core.xml")]
    [TestCase("DesignBishopGrid2Cores.xml")]
    [TestCase("DesignBishopGrid4Cores.xml")]
    [TestCase("DesignBishopGrid8Cores.xml")]
    [TestCase("DesignBishopGrid18Cores.xml")]
    public void DebugDesignWithXmlInputFile(string aFileName)
    {
        string fullInputFilename = Path.Combine(mapTestFiles, aFileName);
        Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
        string inputString = File.ReadAllText(fullInputFilename);
        var engineInterface = new EngineInterface(inputString);
        Assert.IsNotNull(engineInterface.DamProjectData);
        engineInterface.DamProjectData.ProjectPath = @"MultiCore\";
        string result = engineInterface.Validate();
        Assert.IsTrue(result == null, "Validation must succeed but does not, see output xml in debugger");
        string outputString = engineInterface.Run();
        File.WriteAllText("Output.xml", outputString);
        Output output = DamXmlSerialization.LoadOutputFromXmlString(outputString);
        int errorCount = GeneralHelper.DetermineNumberOfCalculationErrors(engineInterface.DamProjectData.CalculationMessages);
        Assert.AreEqual(0, errorCount, "There should be nor errors during the calculation.");
        Assert.AreEqual(output.Results.CalculationMessages.Length, engineInterface.DamProjectData.CalculationMessages.Count);
        if (engineInterface.DamProjectData.DamProjectType == DamProjectType.Design)
        {
            Assert.IsNotNull(output.Results.CalculationResults);
        }
        else
        {
            Assert.AreEqual(8, output.Results.OperationalOutputTimeSeries.Length);
            int numberOfResults = 0;
            int numberOfRealResults = 0;
            foreach (TimeSerie resultSerie in output.Results.OperationalOutputTimeSeries)
            {
                numberOfResults += resultSerie.Entries.TimeSerieEntry.Length;
                foreach (TimeSerieEntriesTimeSerieEntry timeSerieEntriesTimeSerieEntry in resultSerie.Entries.TimeSerieEntry)
                {
                    if (!Double.IsNaN(timeSerieEntriesTimeSerieEntry.Value) && (timeSerieEntriesTimeSerieEntry.Value > 0) &&
                      (timeSerieEntriesTimeSerieEntry.Value < 100000)) 
                    {
                        numberOfRealResults++;
                    }
                }
            }
            Assert.AreEqual(16, numberOfResults);
            Assert.AreEqual(16, numberOfRealResults);
        }
    }
    
    [Test]//, Ignore("This test is only used for debugging XML files generated by Dam UI")]
    [TestCase(10)]
    [TestCase(24)]
    public void OperationalBeeSwarmMultiCoreWithXmlInputFile(int maxCores)
    {
        const string inputFilename = "InputForDebuggingBeeSwarm.xml"; // or put your own name here;
        string fullInputFilename = Path.Combine(mapTestFiles, inputFilename);
        Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
        string inputString = File.ReadAllText(fullInputFilename);
        var engineInterface = new EngineInterface(inputString);
        Assert.IsNotNull(engineInterface.DamProjectData);
        engineInterface.DamProjectData.MaxCalculationCores = maxCores;
        string result = engineInterface.Validate();
        Assert.IsTrue(result == null, "Validation must succeed but does not, see output xml in debugger");
        string outputString = engineInterface.Run();
        string outputName = "Output" + maxCores + ".xml";
        File.WriteAllText(outputName, outputString);
        //Output output = DamXmlSerialization.LoadOutputFromXmlString(outputString);
        //TimeSerieCollection outputTimeSeriesCollection = new TimeSerieCollection(); 
        //outputTimeSeriesCollection.Series.AddRange(engineInterface.DamProjectData.OutputTimeSerieCollection.Series);
        List<Deltares.DamEngine.Data.General.TimeSeries.TimeSerie> series = engineInterface.DamProjectData.OutputTimeSerieCollection.Series;
        
        int errorCount = GeneralHelper.DetermineNumberOfCalculationErrors(engineInterface.DamProjectData.CalculationMessages);
        Assert.AreEqual(0, errorCount, "There should be nor errors during the calculation.");
              
        var seriesCount = 0;
        var resultsCount = 0;
        const double cTolerance = 0.0005;
        
        foreach (Deltares.DamEngine.Data.General.TimeSeries.TimeSerie timeSeries in series)
        {
            //Assert.IsTrue(validParameterIDs.Any(n => n == timeSeries.ParameterId));
            //Assert.IsTrue(locations.Any(l => l.Name == timeSeries.LocationId));
            // StabilityInside check
            if (timeSeries.ParameterId == TimeSerieParameters.StabilityInsideFactor.ToString())
            {
                if (timeSeries.LocationId == "Purmer_PU0042+00_K")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(1.442, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(1.579, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }

                if (timeSeries.LocationId == "Purmer_PU0042+00_K_V")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(1.365, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(1.481, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }

                if (timeSeries.LocationId == "Purmer_PU0042+00_R")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(1.239, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(1.355, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }
                if (timeSeries.LocationId == "Purmer_PU0042+00_R_V")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(1.168, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(1.272, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }
                
                if (timeSeries.LocationId == "Purmer_PU0110+20_K")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(Double.NaN, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(Double.NaN, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }
                
                if (timeSeries.LocationId == "Purmer_PU0110+20_K_V")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(Double.NaN, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(Double.NaN, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }
                
                if (timeSeries.LocationId == "Purmer_PU0110+20_R")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(Double.NaN, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(Double.NaN, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }

                if (timeSeries.LocationId == "Purmer_PU0110+20_R_V")
                {
                    TimeSerieEntry firstEntry = timeSeries.Entries.First();
                    Assert.AreEqual(Double.NaN, firstEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                    TimeSerieEntry lastEntry = timeSeries.Entries.Last();
                    Assert.AreEqual(Double.NaN, lastEntry.Value, cTolerance, "The computed safety factory is not correct");
                    resultsCount++;
                }
            }

            seriesCount++;
        }

        Assert.IsTrue(seriesCount > 0, "No output time series");
        Assert.AreEqual(16, resultsCount, "Incorrect number of results");
        
    }

    private static void RemoveTestWorkingDirectory(string testWorkingFolder)
    {
        if (Directory.Exists(testWorkingFolder))
        {
            const bool recursive = true;
            Directory.Delete(testWorkingFolder, recursive);
        }
    }
}