using FruitBank.Common.Interfaces;
using LinqToDB;
using LinqToDB.Mapping;
using Mango.Nop.Core.Entities;

namespace FruitBank.Common.Entities;

public abstract class MeasuringItemPalletBase : MgEntityBase, IMeasuringItemPalletBase
{
    private double _palletWeight;
    private double _grossWeight;
    private double _tareWeight;

    [NotColumn]
    protected int ForeignItemId;
    [NotColumn]
    public int ForeignKey => ForeignItemId;

    public int Quantity { get; set; }
    
    [Column(DataType = DataType.DecFloat)]
    public double TareWeight
    {
        get => _tareWeight;
        set => _tareWeight = double.Round(value, 1);
    }

    [Column(DataType = DataType.DecFloat)]
    public double PalletWeight
    {
        get => _palletWeight;
        set => _palletWeight = double.Round(value, 1);
    }

    [NotColumn] public double NetWeight => CalculateNetWeight();

    [Column(DataType = DataType.DecFloat, CanBeNull = false)]
    public double GrossWeight
    {
        get => _grossWeight;
        set => _grossWeight = double.Round(value, 1);
    }

    public bool IsMeasured { get; set; }

    [SkipValuesOnUpdate]
    public int? CreatorId { get; set; }
    public int? ModifierId { get; set; }

    [SkipValuesOnUpdate] 
    public DateTime Created { get; set; }
    public DateTime Modified { get; set; }

    public virtual double CalculateNetWeight() => double.Round(GrossWeight - PalletWeight - (TareWeight * Quantity), 1);

    /// <summary>
    /// Nem lehet nullánál kisebb "Weight" érték és a ShippingId, Quantity nagyobb mint nulla! Megengedőbb mint az IsValidMeasuringValues(bool isMeasurable)...
    /// </summary>
    /// <returns></returns>
    public virtual bool IsValidSafeMeasuringValues()
    {
        return Quantity > 0 && TareWeight >= 0 && PalletWeight >= 0 && NetWeight >= 0 && GrossWeight >= 0;
    }

    /// <summary>
    /// "Szigorúbb" mint az IsValidSafeMeasuringValues()
    /// </summary>
    /// <param name="isMeasurable"></param>
    /// <returns></returns>
    public virtual bool IsValidMeasuringValues(bool isMeasurable)
    {
        return Quantity > 0 && ((!isMeasurable && NetWeight == 0 && GrossWeight == 0 && PalletWeight == 0 && TareWeight == 0) 
                                || (isMeasurable && NetWeight > 0 && GrossWeight > 0 && PalletWeight >= 0 && TareWeight >= 0));
    }

    public bool IsMeasuredAndValid(bool isMeasurable)
    {
        return Id > 0 && IsMeasured && IsValidMeasuringValues(isMeasurable);
    }

    public override string ToString()
    {
        return $"{base.ToString()} [ForeignItemId: {ForeignItemId}; IsMeasured: {IsMeasured}; PalletWeight: {PalletWeight}; TareWeight: {TareWeight}; Quantity: {Quantity}; NetWeight: {NetWeight}; GrossWeight: {GrossWeight}]";
    }
}