using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CaeGlobals;
using System.Runtime.Serialization;

namespace CaeModel
{
    [Serializable]
    public class ElasticWithDensity : MaterialProperty, ISerializable
    {
        // Variables                                                                                                                
        private EquationContainer _youngsModulus;          //ISerializable
        private EquationContainer _poissonsRatio;          //ISerializable
        private EquationContainer _density;                //ISerializable


        // Properties                                                                                                               
        public EquationContainer YoungsModulus { get { return _youngsModulus; } set { SetYoungsModulus(value); } }
        public EquationContainer PoissonsRatio { get { return _poissonsRatio; } set { SetPoissonsRatio(value); } }
        public EquationContainer Density { get { return _density; } set { SetDensity(value); } }


        // Constructors                                                                                                             
        public ElasticWithDensity(double youngsModulus, double poissonsRatio, double density)
        {
            // The constructor must work with E = 0
            SetYoungsModulus(new EquationContainer(typeof(StringPressureConverter), youngsModulus), false);
            // Use the method to perform any checks necessary
            PoissonsRatio = new EquationContainer(typeof(StringDoubleConverter), poissonsRatio);
            // The constructor must work with rho = 0
            SetDensity(new EquationContainer(typeof(StringDensityConverter), density), false);
        }
        public ElasticWithDensity(SerializationInfo info, StreamingContext context)
            : base(info, context)
        {
            foreach (SerializationEntry entry in info)
            {
                switch (entry.Name)
                {
                    case "_youngsModulus":
                        // Compatibility for version v1.4.0
                        if (entry.Value is double valueE)
                            YoungsModulus = new EquationContainer(typeof(StringPressureConverter), valueE);
                        else
                            SetYoungsModulus((EquationContainer)entry.Value, false);
                        break;
                    case "_poissonsRatio":
                        // Compatibility for version v1.4.0
                        if (entry.Value is double valueV)
                            PoissonsRatio = new EquationContainer(typeof(StringDoubleConverter), valueV);
                        else
                            SetPoissonsRatio((EquationContainer)entry.Value, false);
                        break;
                    case "_density":
                        // Compatibility for version v1.4.0
                        if (entry.Value is double valueRho)
                            Density = new EquationContainer(typeof(StringDensityConverter), valueRho);
                        else
                            SetDensity((EquationContainer)entry.Value, false);
                        break;
                    default:
                        break;
                }
            }
        }


        // Methods                                                                                                                  
        private void SetYoungsModulus(EquationContainer value, bool checkEquation = true)
        {
            EquationContainer.SetAndCheck(ref _youngsModulus, value, CheckPositive, checkEquation);
        }
        private void SetPoissonsRatio(EquationContainer value, bool checkEquation = true)
        {
            EquationContainer.SetAndCheck(ref _poissonsRatio, value, null, checkEquation);
        }
        private void SetDensity(EquationContainer value, bool checkEquation = true)
        {
            EquationContainer.SetAndCheck(ref _density, value, CheckPositive, checkEquation);
        }
        //
        private double CheckPositive(double value)
        {
            if (value <= 0) throw new CaeException(_positive);
            else return value;
        }
        // IContainsEquations
        public override void CheckEquations()
        {
            _youngsModulus.CheckEquation();
            _poissonsRatio.CheckEquation();
            _density.CheckEquation();
        }
        // ISerialization
        public new void GetObjectData(SerializationInfo info, StreamingContext context)
        {
            // Using typeof() works also for null fields
            base.GetObjectData(info, context);
            //
            info.AddValue("_youngsModulus", _youngsModulus, typeof(EquationContainer));
            info.AddValue("_poissonsRatio", _poissonsRatio, typeof(EquationContainer));
            info.AddValue("_density", _density, typeof(EquationContainer));
        }
    }
}