// Copyright (C) Stichting Deltares 2023. All rights reserved.
// 
// This file is part of the application DAM - Live.
// 
// DAM - Live 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.IO;
using System.Linq;
using Deltares.DamLive.Application;
using Deltares.Dam.Data;
using Deltares.Standard.IO;
using NUnit.Framework;

namespace Deltares.DamLive.TestHelper;

public class GeneralHelper
{
    public const int CMinCores = 1;
    public const int CMaxCores = 20;

    public static void SetupIntegrationProject(int maxCores, string testWorkingFolder, string testIntegrationDataFolder,
                                               string input1aFilename, string output1aFilename, string testFileName,
                                               string calculationParametersIntegrationFilename, string projectIntegrationFilename,
                                               out DamEngineRunner runner, out List<Location> locations)
    {
        string postfix = maxCores == 0 ? "" : maxCores.ToString();
        SetupIntegrationProject(postfix, testWorkingFolder, testIntegrationDataFolder, input1aFilename, output1aFilename,
                                testFileName, calculationParametersIntegrationFilename, projectIntegrationFilename, out runner, out locations);
    }
    public static void SetupIntegrationProject(string testWorkingFolder, string testIntegrationDataFolder,
                                               string projectIntegrationFilename,
                                               out DamEngineRunner runner, out List<Location> locations)
    {
        const string inputFilename = @"live.InputTimeSeries.xml";
        const string outputFilename = @"live.OutputTimeSeries.xml";
        const string parametersFilename = @"live.ParametersFile.xml";
        SetupIntegrationProject("", testWorkingFolder, testIntegrationDataFolder, inputFilename, outputFilename,
                                "test", parametersFilename, projectIntegrationFilename, out runner, out locations);
    }
    public static void SetupIntegrationProject(string postfix, string testWorkingFolder, string testIntegrationDataFolder, 
                                               string input1aFilename, string output1aFilename, string testFileName,
                                               string calculationParametersIntegrationFilename, string projectIntegrationFilename,
                                               out DamEngineRunner runner, out List<Location> locations)
    {
        string actualTestPath = Path.GetFullPath(testWorkingFolder + postfix);

        Directory.CreateDirectory(actualTestPath);

        DirectoryHelper.CopyRecursive(actualTestPath, testIntegrationDataFolder);

        string inputFile = Path.Combine(actualTestPath, input1aFilename);
        string outputFile = Path.Combine(actualTestPath, output1aFilename);
        string parameterFile = Path.Combine(actualTestPath, calculationParametersIntegrationFilename);
        string projectFile = Path.Combine(actualTestPath, projectIntegrationFilename);
        string testFile = Path.Combine(actualTestPath, testFileName);
        DamProject.SetTestProgramVersion("24.1");
        DamProjectData damData = DamProject.LoadData(projectFile);
        locations = damData.Locations.ToList();

        // Load the sensor time serie data (see input file for details)
        TimeSerieCollection inputTimeSeries = TimeSerieCollection.LoadFromFile(inputFile);
        //ShortenTimeSeries(inputTimeSeries);
        inputTimeSeries.Save(Path.ChangeExtension(inputFile, "short.xml"));

        runner = new DamEngineRunner
        {
            DamXFile = new FileInfo(projectFile),
            ParametersFile = new FileInfo(parameterFile),
            FewsInputFile = new FileInfo(inputFile),
            FewsOutputFile = new FileInfo(outputFile),
            Filter = "",
            InputTimeSeriesCollection = inputTimeSeries,
            TestFileName = testFile
        };
    }

    public static void InitializeRunner(DamEngineRunner runner, int maxCores)
    {
        runner.Initialize();
        runner.DamProjectData.MaxCalculationCores = maxCores;
        Assert.That(runner, Is.Not.Null);
        Assert.Multiple(() =>
        {
            Assert.That(runner.DamProjectData, Is.Not.Null);
        });
    }
    
    public static void AssertNoErrors(DamEngineRunner runner)
    {
        if (runner.HasErrors)
        {
            Assert.Fail("The test failed. See the error log in the test output console for more info");
        }
    }
    
    /// <summary>
    /// Make timeserie shorter for testing: the first, the last and the middle entry are only used
    /// </summary>
    /// <param name="inputTimeSeries"></param>
    private static void ShortenTimeSeries(TimeSerieCollection inputTimeSeries) // ToDo the: Currently not used, but keep for future use
    {
        if (inputTimeSeries?.Series[0] != null && inputTimeSeries.Series[0].Entries.Count > 3)
        {
            double entriesCount = inputTimeSeries.Series[0].Entries.Count;
            var middleIndex = (int)Math.Round(entriesCount / 2);  
            foreach (TimeSerie serie in inputTimeSeries.Series)
            {
                for (int i = serie.Entries.Count - 2; i > 0; i--)
                {
                    if (i != middleIndex) // keep the time entry in the middle of the serie
                    {
                        serie.Entries.RemoveAt(i);
                    }
                }
            }
        }
    }
    
}