// Copyright (C) Stichting Deltares 2017. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
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// 
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// Stichting Deltares and remain full property of Stichting Deltares at all times.
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using Ringtoets.Common.Data.Probabilistics;

namespace Ringtoets.MacroStabilityInwards.Primitives
{
    /// <summary>
    /// Factory for creating design variables based on probabilistic distributions for macro stability.
    /// </summary>
    public static class MacroStabilityInwardsSemiProbabilisticDesignVariableFactory
    {
        /// <summary>
        /// Creates the design variable for the volumic weight of the layer above the phreatic level.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetAbovePhreaticLevel(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.AbovePhreaticLevel)
            {
                Percentile = 0.5
            };
        }

        /// <summary>
        /// Creates the design variable for the volumic weight of the layer below the phreatic level.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetBelowPhreaticLevel(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.BelowPhreaticLevel)
            {
                Percentile = 0.5
            };
        }

        /// <summary>
        /// Creates the design variable for the cohesion.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetCohesion(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.Cohesion)
            {
                Percentile = 0.05
            };
        }

        /// <summary>
        /// Creates the design variable for the friction angle.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetFrictionAngle(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.FrictionAngle)
            {
                Percentile = 0.05
            };
        }

        /// <summary>
        /// Creates the design variable for the shear strength ratio.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetShearStrengthRatio(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.ShearStrengthRatio)
            {
                Percentile = 0.05
            };
        }

        /// <summary>
        /// Creates the design variable for the strength increase component.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetStrengthIncreaseExponent(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.StrengthIncreaseExponent)
            {
                Percentile = 0.05
            };
        }

        /// <summary>
        /// Creates the design variable for the POP.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetPop(MacroStabilityInwardsSoilLayerData data)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(data.Pop)
            {
                Percentile = 0.05
            };
        }

        /// <summary>
        /// Creates the design variable for a preconsolidation stress definition.
        /// </summary>
        public static VariationCoefficientDesignVariable<VariationCoefficientLogNormalDistribution> GetPreconsolidationStress(IMacroStabilityInwardsPreconsolidationStress preconsolidationStressUnderSurfaceLine)
        {
            return new VariationCoefficientLogNormalDistributionDesignVariable(preconsolidationStressUnderSurfaceLine.Stress)
            {
                Percentile = 0.05
            };
        }
    }
}