using Comal.Classes;
using InABox.Core;

namespace Comal.Stores;

public class ProductStore : BaseProductStore<Product>
{
    protected override void AfterSave(Product entity)
    {
        base.AfterSave(entity);

        if (entity.HasOriginalValue("NettCost"))
            UpdateProductComponentCost(entity);
        
        if (entity.UnitOfMeasure.HasOriginalValue(nameof(ProductDimensionUnitLink.ID)))
            UpdateProductUOMs(entity);
    }

    private static List<Type>? _stockentitytypes = null;
    
    private void UpdateProductUOMs(Product entity)
    {
        // If this is a new Product (ie original value is Guid.Empty)
        if (entity.GetOriginalValue(x => x.ID, entity.ID) == Guid.Empty)
            return;
        
        _stockentitytypes ??= CoreUtils.TypeList(x =>
            x.IsSubclassOf(typeof(StockEntity))
                && !x.HasAttribute<AutoEntity>()
                && x.HasInterface<IPersistent>());
        var _uom = Provider.Query(new Filter<ProductDimensionUnit>(x => x.ID).IsEqualTo(entity.UnitOfMeasure.ID))
            .ToObjects<ProductDimensionUnit>().FirstOrDefault() ?? new ProductDimensionUnit();
        foreach (var _stockentitytype in _stockentitytypes)
        {
            var _children = Provider.Query(
                _stockentitytype,
                new Filter<StockEntity>(x => x.Product.ID).IsEqualTo(entity.ID),
                Columns.None<StockEntity>()
                    .Add(x => x.ID)
                    .AddSubColumns(x => x.Dimensions, null)
            ).ToArray(_stockentitytype).Cast<StockEntity>().ToArray();
            foreach (var _child in _children)
                _child.Dimensions.Unit.CopyFrom(_uom);
            Provider.Save(_stockentitytype, _children.Where(x => x.IsChanged()));
        }
    }

    protected override void AfterDelete(Product entity)
    {
        base.AfterDelete(entity);
        UpdateProductComponentCost(entity);
    }
}