// Copyright (C) Stichting Deltares 2024. 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.Data;
using System.IO;
using Deltares.DamEngine.Calculators.DikesDesign;
using Deltares.DamEngine.Calculators.KernelWrappers.Common;
using Deltares.DamEngine.Calculators.KernelWrappers.Interfaces;
using Deltares.DamEngine.Calculators.KernelWrappers.MacroStabilityCommon;
using Deltares.DamEngine.Calculators.KernelWrappers.MacroStabilityCommon.MacroStabilityIo;
using Deltares.DamEngine.Calculators.Properties;
using Deltares.DamEngine.Data.Design;
using Deltares.DamEngine.Data.General;
using Deltares.DamEngine.Data.General.PlLines;
using Deltares.DamEngine.Data.General.Results;
using Deltares.DamEngine.Data.Geometry;
using Deltares.DamEngine.Data.Geotechnics;
using Deltares.DamEngine.Data.Standard.Calculation;
using Deltares.DamEngine.Data.Standard.Logging;
using Deltares.MacroStability.CSharpWrapper;
using Deltares.MacroStability.CSharpWrapper.Output;
using UpliftVanCalculationGrid = Deltares.DamEngine.Calculators.KernelWrappers.MacroStabilityCommon.UpliftVanCalculationGrid;

namespace Deltares.DamEngine.Calculators.KernelWrappers.MacroStabilityInwards;

public class MacroStabilityInwardsKernelWrapper : IKernelWrapper
{
    readonly MacroStabilityCommonHelper macroStabilityCommonHelper;
    private Calculator stabilityCalculator;
    private Calculator stabilityCalculatorForSecondCalculation;
    private string fileNameForCalculation;
    private string fileNameForSecondCalculation;
    private int lastIterationIndex;

    /// <summary>
    /// Initializes a new instance of the <see cref="MacroStabilityInwardsKernelWrapper"/> class.
    /// </summary>
    public MacroStabilityInwardsKernelWrapper()
    {
        macroStabilityCommonHelper = new MacroStabilityCommonHelper();
    }

    /// <summary>
    /// Gets or sets the failure mechanism parameters for MStab.
    /// </summary>
    /// <value>
    /// The failure mechanism parameters MStab.
    /// </value>
    public FailureMechanismParametersMStab FailureMechanismParametersMStab { get; set; }

    /// <summary>
    /// Prepares the specified dam kernel input.
    /// </summary>
    /// <param name="damKernelInput">The dam kernel input.</param>
    /// <param name="iterationIndex">The number of the current iteration.</param>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output</param>
    /// <returns>
    /// Result of the preparation
    /// </returns>
    public PrepareResult Prepare(DamKernelInput damKernelInput, int iterationIndex, out IKernelDataInput kernelDataInput, out IKernelDataOutput kernelDataOutput)
    {
        fileNameForCalculation = "";
        fileNameForSecondCalculation = "";
        var macroStabilityInput = new MacroStabilityKernelDataInput();
        kernelDataInput = macroStabilityInput;
        var macroStabilityOutput = new MacroStabilityOutput
        {
            CalculationResult = CalculationResult.NoRun
        };
        kernelDataOutput = macroStabilityOutput;
        if (damKernelInput.SubSoilScenario.SegmentFailureMechanismType != null &&
            damKernelInput.SubSoilScenario.SegmentFailureMechanismType.Value == SegmentFailureMechanismType.Stability)
        {
            try
            {
                bool isBishopUpliftVan = FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.BishopUpliftVan;
                MStabModelType model = FailureMechanismParametersMStab.MStabParameters.Model;
                if (isBishopUpliftVan)
                {
                    // if current model is BishopUpliftVan then set to Bishop for proper name/path for input file
                    model = MStabModelType.Bishop;
                }

                MacroStabilityCommonHelper.CombineSoilProfileWithSurfaceLine(damKernelInput.SubSoilScenario, damKernelInput.Location.SurfaceLine,
                                                                             damKernelInput.Location.GetDikeEmbankmentSoil());
                // Check if the surface-line is within the SoilProfile2D boundaries (left/right)
                if (!SoilProfile2DSurfaceLineHelper.IsSurfaceLineInsideSoilProfile2D(damKernelInput.Location.SurfaceLine, damKernelInput.SubSoilScenario.SoilProfile2D))
                {
                    macroStabilityOutput.Message = new LogMessage
                    {
                        MessageType = LogMessageType.FatalError,
                        Message = $"SurfaceLine {damKernelInput.Location.SurfaceLine.Name} does not fit within the boundaries of soil profile {damKernelInput.SubSoilScenario.SoilProfile2D.Name}"
                    };
                    return PrepareResult.Failed;
                }

                const bool useRiverLevelLow = false;
                // Determine whether there is uplift
                var upliftHelper = new UpliftHelper();
                PlLines plLines = upliftHelper.DeterminePlLinesForStability(damKernelInput, useRiverLevelLow, out UpliftSituation upliftSituation);
                upliftSituation.IsUplift = upliftHelper.DetermineIsUplift(plLines, damKernelInput.Location, damKernelInput.SubSoilScenario);
                macroStabilityOutput.UpliftSituation = upliftSituation;

                var fillMacroStabilityWrapperFromEngine = new FillMacroStabilityWrapperInputFromEngine
                {
                    TrafficLoad = MacroStabilityCommonHelper.FillTrafficLoad(damKernelInput)
                };

                if (FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.Bishop ||
                    FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.BishopUpliftVan)
                {
                    fillMacroStabilityWrapperFromEngine.BishopCalculationGrid = MacroStabilityCommonHelper.FillBishopCalculationGrid(damKernelInput);
                }

                if (FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.UpliftVan ||
                    FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.BishopUpliftVan)
                {
                    if (!upliftSituation.IsUplift && !isBishopUpliftVan)
                    {
                        return PrepareResult.NotRelevant;
                    }

                    fillMacroStabilityWrapperFromEngine.UpliftVanCalculationGrid = FillUpliftVanCalculationGrid(damKernelInput);
                }

                FailureMechanismParametersMStab.MStabParameters.Model = model;

                double penetrationLength = damKernelInput.Location.ModelParametersForPlLines.PenetrationLength;
                SoilProfile2D soilProfile2D = damKernelInput.SubSoilScenario.SoilProfile2D;
                IntrusionVerticalWaterPressureType? pressureType = damKernelInput.Location.IntrusionVerticalWaterPressure;
                Waternet waterNet = PlLinesToWaternetConverter.CreateWaternetBasedOnPlLines(plLines, soilProfile2D, penetrationLength, pressureType);

                macroStabilityInput.Input = fillMacroStabilityWrapperFromEngine.CreateMacroStabilityInput(damKernelInput, FailureMechanismParametersMStab.MStabParameters, waterNet);
                fileNameForCalculation = MacroStabilityCommonHelper.GetStabilityInputFileName(damKernelInput, iterationIndex, FailureMechanismParametersMStab.MStabParameters.Model);
                stabilityCalculator = new Calculator(macroStabilityInput.Input);
                PrepareResult firstPrepareResult = MacroStabilityCommonHelper.PrepareKernel(stabilityCalculator, fileNameForCalculation);

                if (isBishopUpliftVan && upliftSituation.IsUplift && firstPrepareResult == PrepareResult.Successful)
                {
                    model = MStabModelType.UpliftVan;
                    FailureMechanismParametersMStab.MStabParameters.Model = model;
                    macroStabilityInput.Input = fillMacroStabilityWrapperFromEngine.CreateMacroStabilityInput(damKernelInput, FailureMechanismParametersMStab.MStabParameters, waterNet);
                    fileNameForSecondCalculation = MacroStabilityCommonHelper.GetStabilityInputFileName(damKernelInput, iterationIndex, FailureMechanismParametersMStab.MStabParameters.Model);

                    // reset model
                    FailureMechanismParametersMStab.MStabParameters.Model = MStabModelType.BishopUpliftVan;

                    stabilityCalculatorForSecondCalculation = new Calculator(macroStabilityInput.Input);
                    return MacroStabilityCommonHelper.PrepareKernel(stabilityCalculatorForSecondCalculation, fileNameForSecondCalculation);
                }

                if (isBishopUpliftVan)
                {
                    // reset model
                    FailureMechanismParametersMStab.MStabParameters.Model = MStabModelType.BishopUpliftVan;
                }

                return firstPrepareResult;
            }
            catch (Exception e)
            {
                macroStabilityOutput.Message = new LogMessage
                {
                    MessageType = LogMessageType.FatalError,
                    Message = e.Message
                };
                kernelDataOutput = macroStabilityOutput;
                return PrepareResult.Failed;
            }
        }

        kernelDataInput = null;
        return PrepareResult.NotRelevant;
    }

    /// <summary>
    /// Validates the specified kernel data input.
    /// </summary>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="messages">The return messages.</param>
    /// <returns>
    /// Zero when there are no errors, one when there are errors that prevent a calculation
    /// </returns>
    public int Validate(IKernelDataInput kernelDataInput, IKernelDataOutput kernelDataOutput, out List<LogMessage> messages)
    {
        return MacroStabilityCommonHelper.Validate(kernelDataInput, kernelDataOutput, out messages);
    }

    /// <summary>
    /// Executes the kernel.
    /// </summary>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="messages">The return messages.</param>
    public void Execute(IKernelDataInput kernelDataInput, IKernelDataOutput kernelDataOutput, out List<LogMessage> messages)
    {
        var macroStabilityKernelDataInput = (MacroStabilityKernelDataInput) kernelDataInput;
        var macroStabilityOutput = (MacroStabilityOutput) kernelDataOutput;
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelInputNull(macroStabilityKernelDataInput);
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelOutputNull(macroStabilityOutput);

        bool isBishopUpliftVan = FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.BishopUpliftVan;
        if (isBishopUpliftVan)
        {
            macroStabilityKernelDataInput.Input.StabilityModel.ModelOption = StabilityModelOptionType.Bishop;
        }

        macroStabilityCommonHelper.PerformStabilityCalculation(macroStabilityKernelDataInput.Input, macroStabilityOutput,
                                                               fileNameForCalculation, stabilityCalculator, out messages);
        string fileName = Path.GetFileNameWithoutExtension(fileNameForCalculation);
        foreach (LogMessage logMessage in messages)
        {
            logMessage.Message = fileName + ": " + logMessage.Message;
        }

        if (isBishopUpliftVan && macroStabilityOutput.UpliftSituation.IsUplift)
        {
            macroStabilityKernelDataInput.Input.StabilityModel.ModelOption = StabilityModelOptionType.UpliftVan;
            macroStabilityCommonHelper.PerformStabilityCalculation(macroStabilityKernelDataInput.Input, macroStabilityOutput,
                                                                   fileNameForSecondCalculation, stabilityCalculatorForSecondCalculation, out messages);
            fileName = Path.GetFileNameWithoutExtension(fileNameForSecondCalculation);
            foreach (LogMessage logMessage in messages)
            {
                logMessage.Message = fileName + ": " + logMessage.Message;
            }
        }
    }

    /// <summary>
    /// Fills the design results with the kernel output.
    /// </summary>
    /// <param name="damKernelInput">The dam kernel input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="designScenario">The design scenario.</param>
    /// <param name="resultMessage">The result message.</param>
    /// <param name="designResults">The design results.</param>
    /// <exception cref="NoNullAllowedException"></exception>
    public void PostProcess(DamKernelInput damKernelInput, IKernelDataOutput kernelDataOutput, DesignScenario designScenario,
                            string resultMessage, out List<DesignResult> designResults)
    {
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityDamKernelInputNull(damKernelInput);
        var macroStabilityOutput = kernelDataOutput as MacroStabilityOutput;
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelOutputNull(macroStabilityOutput);
        designResults = new List<DesignResult>();
        if (macroStabilityOutput == null)
        {
            return;
        }

        MacroStabilityOutputItem macroStabilityOutputItem = ProperMacroStabilityResultsItem(macroStabilityOutput, 0);
        if (macroStabilityOutputItem != null)
        {
            DesignResult designResult = MacroStabilityCommonHelper.NewDesignResult(damKernelInput, designScenario);
            MacroStabilityCommonHelper.FillDesignResult(macroStabilityOutputItem, designResult);
            designResult.StabilityDesignResults.NumberOfIterations = lastIterationIndex;
            designResult.StabilityDesignResults.UpliftSituation = macroStabilityOutput.UpliftSituation;
            designResults.Add(designResult);
        }

        bool isBishopUpliftVan = FailureMechanismParametersMStab.MStabParameters.Model == MStabModelType.BishopUpliftVan;
        if (isBishopUpliftVan)
        {
            macroStabilityOutputItem = ProperMacroStabilityResultsItem(macroStabilityOutput, 1);
            if (macroStabilityOutputItem != null)
            {
                macroStabilityOutputItem = macroStabilityOutput.StabilityOutputItems[1];
                if (macroStabilityOutputItem != null)
                {
                    DesignResult designResult = MacroStabilityCommonHelper.NewDesignResult(damKernelInput, designScenario);
                    MacroStabilityCommonHelper.FillDesignResult(macroStabilityOutputItem, designResult);
                    designResult.StabilityDesignResults.NumberOfIterations = lastIterationIndex;
                    designResult.StabilityDesignResults.UpliftSituation = macroStabilityOutput.UpliftSituation;
                    designResults.Add(designResult);
                }
            }

            int index;
            // add worst result from Bishop/UpliftVan, but only if both succeeded.
            if (designResults[0].CalculationResult == CalculationResult.Succeeded &&
                designResults[1].CalculationResult == CalculationResult.Succeeded)
            {
                if (designResults[0].StabilityDesignResults.SafetyFactor <= designResults[1].StabilityDesignResults.SafetyFactor)
                {
                    index = 0;
                }
                else
                {
                    index = 1;
                }
            }
            else if (designResults[0].CalculationResult != CalculationResult.Succeeded)
            {
                // There is no reason why Bishop should not have succeeded therefore no end results can be given
                index = 0;
            }
            else if (designResults[1].CalculationResult == CalculationResult.NoRun)
            {
                // No uplift therefore no UpliftVan calculation was made. Present Bishop result.
                index = 0;
            }
            else
            {
                // UpliftVan calculation failed. No end results can be given
                index = 1;
            }

            macroStabilityOutputItem = ProperMacroStabilityResultsItem(macroStabilityOutput, index);
            if (macroStabilityOutputItem != null)
            {
                DesignResult overallResult = MacroStabilityCommonHelper.NewDesignResult(damKernelInput, designScenario);
                MacroStabilityCommonHelper.FillDesignResult(macroStabilityOutputItem, overallResult);
                overallResult.StabilityDesignResults.UpliftSituation = macroStabilityOutput.UpliftSituation;
                overallResult.StabilityDesignResults.StabilityModelType = MStabModelType.BishopUpliftVan;
                designResults.Add(overallResult);
            }
        }
    }

    /// <summary>
    /// Calculates the design at point.
    /// </summary>
    /// <param name="damKernelInput">The dam kernel input.</param>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="point">The point.</param>
    /// <param name="messages">The messages.</param>
    /// <returns></returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public ShoulderDesign CalculateDesignAtPoint(DamKernelInput damKernelInput, IKernelDataInput kernelDataInput,
                                                 IKernelDataOutput kernelDataOutput, GeometryPoint point, out List<LogMessage> messages)
    {
        // ToDo: Not clear yet if this must be done or how
        throw new NotImplementedException();
    }

    /// <summary>
    /// Evaluates the design (current factor greater than desired factor)
    /// </summary>
    /// <param name="damKernelInput">The dam kernel input.</param>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="designAdvise">The design advise.</param>
    /// <param name="evaluationMessage">The evaluation message.</param>
    /// <returns>
    /// if the design was successful
    /// </returns>
    /// <exception cref="System.NotImplementedException"></exception>
    public bool EvaluateDesign(DamKernelInput damKernelInput, IKernelDataInput kernelDataInput, IKernelDataOutput kernelDataOutput,
                               out DesignAdvise designAdvise, out string evaluationMessage)
    {
        var macroStabilityKernelDataInput = kernelDataInput as MacroStabilityKernelDataInput;
        var macroStabilityOutput = kernelDataOutput as MacroStabilityOutput;
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelInputNull(macroStabilityKernelDataInput);
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelOutputNull(macroStabilityOutput);
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityDamKernelInputNull(damKernelInput);

        double fosRequired = damKernelInput.Location.ModelFactors.RequiredSafetyFactorStabilityInnerSlope;
        if (macroStabilityOutput != null)
        {
            double fosAchieved = macroStabilityOutput.StabilityOutputItems[0].SafetyFactor;
            double exitPointXCoordinate = macroStabilityOutput.StabilityOutputItems[0].CircleSurfacePointRightXCoordinate;
            GeometryPoint limitPointForShoulderDesign = damKernelInput.Location.SurfaceLine.GetLimitPointForShoulderDesign();
            evaluationMessage = string.Format(Resources.FactorAchievedVsFactorRequired, fosAchieved, fosRequired);
            if (exitPointXCoordinate > limitPointForShoulderDesign.X)
            {
                designAdvise = DesignAdvise.ShoulderInwards;
            }
            else
            {
                designAdvise = DesignAdvise.SlopeInwards;
            }

            bool isDesignReady = fosAchieved >= fosRequired;
            if (isDesignReady)
            {
                designAdvise = DesignAdvise.None;
            }

            return isDesignReady;
        }

        designAdvise = DesignAdvise.None;
        evaluationMessage = "No Output";
        return false;
    }

    /// <summary>
    /// Prepares the design.
    /// </summary>
    /// <param name="kernelDataInput">The kernel data input.</param>
    /// <param name="kernelDataOutput">The kernel data output.</param>
    /// <param name="damKernelInput">The dam kernel input.</param>
    /// <param name="iterationIndex">Index of the iteration.</param>
    /// <param name="embankmentDesignParameters">The embankment design parameters.</param>
    public void PrepareDesign(IKernelDataInput kernelDataInput, IKernelDataOutput kernelDataOutput, DamKernelInput damKernelInput,
                              int iterationIndex, out EmbankmentDesignParameters embankmentDesignParameters)
    {
        var macroStabilityKernelDataInput = kernelDataInput as MacroStabilityKernelDataInput;
        MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelInputNull(macroStabilityKernelDataInput);

        lastIterationIndex = iterationIndex;
        Location location = damKernelInput.Location;

        if (iterationIndex < 1)
        {
            // This is the first (initial) call to prepareDesign.
            // The embankment material is set to DikeEmbankmentMaterial, because the next iteration (Index = 1) will be height adaption 
            embankmentDesignParameters = new EmbankmentDesignParameters
            {
                EmbankmentMaterialname = location.DikeEmbankmentMaterial
            };
            FailureMechanismParametersMStab.EmbankmentDesignParameters = embankmentDesignParameters;
        }
        else
        {
            // Calculation iterations start with IterationIndex = 1.
            // When IterationIndex = 1: height adaption.
            // When Iteration > 1: Slope/Shoulder adaption.
            // Starting from IterationIndex 2 the following parameters should be used: 
            // - The embankment material is set to ShoulderEmbankmentMaterial. 
            // - The previous geometry is set to the height adapted geometry (name is constructed with iteration index 1).
            if (iterationIndex == 2)
            {
                FailureMechanismParametersMStab.EmbankmentDesignParameters.EmbankmentMaterialname = location.ShoulderEmbankmentMaterial;
            }

            // In the following prepareDesign calls just return the stored embankmentDesignParameters
            embankmentDesignParameters = FailureMechanismParametersMStab.EmbankmentDesignParameters;
        }
    }

    /// <summary>
    /// Gets the design strategy
    /// </summary>
    /// <param name="damKernelInput"></param>
    /// <returns></returns>
    public DesignStrategy GetDesignStrategy(DamKernelInput damKernelInput)
    {
        switch (damKernelInput.Location.StabilityDesignMethod)
        {
            case StabilityDesignMethod.OptimizedSlopeAndShoulderAdaption:
                return DesignStrategy.OptimizedSlopeAndShoulderAdaption;
            case StabilityDesignMethod.SlopeAdaptionBeforeShoulderAdaption:
                return DesignStrategy.SlopeAdaptionBeforeShoulderAdaption;
            default:
                return DesignStrategy.NoDesignPossible;
        }
    }

    private UpliftVanCalculationGrid FillUpliftVanCalculationGrid(DamKernelInput damKernelInput)
    {
        SlipCircleDefinition slipCircleDefinition = damKernelInput.DamFailureMechanismeCalculationSpecification
                                                                  .FailureMechanismParametersMStab.MStabParameters.SlipCircleDefinition;
        UpliftVanCalculationGrid upliftVanCalculationGrid = UpliftVanGridCreator.DetermineGridsFromSettings(
            slipCircleDefinition, damKernelInput.Location.SurfaceLine);
        double centerOfLeftGridXCoordinate =
            (upliftVanCalculationGrid.LeftGridXLeft + upliftVanCalculationGrid.LeftGridXRight) * 0.5;
        SoilProfile1D soilProfile1DAtCenterOfLeftGridXCoordinate =
            damKernelInput.SubSoilScenario.DetermineSoilProfile1DAtX(centerOfLeftGridXCoordinate,
                                                                     damKernelInput.Location.SurfaceLine,
                                                                     damKernelInput.Location.GetDikeEmbankmentSoil());
        UpliftVanGridCreator.DetermineTangentLines(upliftVanCalculationGrid, slipCircleDefinition,
                                                   soilProfile1DAtCenterOfLeftGridXCoordinate);

        return upliftVanCalculationGrid;
    }

    private MacroStabilityOutputItem ProperMacroStabilityResultsItem(MacroStabilityOutput macroStabilityOutput, int requestedIndex)
    {
        MacroStabilityOutputItem macroStabilityOutputItem = null;
        if (macroStabilityOutput?.StabilityOutputItems != null &&
            macroStabilityOutput.StabilityOutputItems.Count > requestedIndex &&
            macroStabilityOutput.StabilityOutputItems[requestedIndex] != null)
        {
            macroStabilityOutputItem = macroStabilityOutput.StabilityOutputItems[requestedIndex];
        }

        return macroStabilityOutputItem;
    }
}