// Copyright (C) Stichting Deltares 2025. 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
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// This program is distributed in the hope that it will be useful,
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// 
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// Stichting Deltares and remain full property of Stichting Deltares at all times.
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using Deltares.DamEngine.Data.Properties;

namespace Deltares.DamEngine.Data.Geotechnics;

public static class SoilProfile1DAquiferLayerCombiner
{
    /// <summary>
    /// Combines the aquifer layers.
    /// </summary>
    /// <param name="soilProfile1D">The 1D soil profile.</param>
    /// <param name="topLayerName">Name of the top layer.</param>
    /// <returns>Properties of the combined aquifer layers</returns>
    /// <exception cref="System.Exception">InconsistentWaterpressureInterpolationModel</exception>
    public static AquiferLayerProperties CombineLayers(SoilProfile1D soilProfile1D, string topLayerName)
    {
        SoilLayer1D layerWithName = soilProfile1D.GetLayerWithName(topLayerName);
        var num1 = 0.0;
        double diameterD70 = layerWithName.Soil.DiameterD70;
        var num2 = 0.0;

        int startLayerIndex = soilProfile1D.GetLayerIndexAt(layerWithName);
        WaterpressureInterpolationModel interpolationModel = layerWithName.WaterpressureInterpolationModel;
        for (int layerIndexAt = startLayerIndex; layerIndexAt < soilProfile1D.LayerCount && soilProfile1D.Layers[layerIndexAt].IsAquifer; ++layerIndexAt)
        {
            if (interpolationModel != soilProfile1D.Layers[layerIndexAt].WaterpressureInterpolationModel)
            {
                throw new SoilProfile1DAquiferLayerCombinerException(
                    string.Format(Resources.SoilProfile1DAquiferLayerCombiner_CombineLayers_InconsistentWaterpressureInterpolationModel,
                                  soilProfile1D.Name));
            }

            double layerHeight = soilProfile1D.GetLayerHeight(soilProfile1D.Layers[layerIndexAt]);
            num1 += layerHeight;
            num2 += layerHeight * soilProfile1D.Layers[layerIndexAt].Soil.PermeabKx;
        }

        var aquiferLayer = new AquiferLayerProperties();
        aquiferLayer.D70 = diameterD70;
        aquiferLayer.Height = num1;
        aquiferLayer.PermeabilityKx = num2 / num1;
        return aquiferLayer;
    }

    public struct AquiferLayerProperties
    {
        public double D70 { get; set; }
        public double Height { get; set; }
        public double PermeabilityKx { get; set; }
    }
}