prs/prs.classes/Entities/Product/ProductLookups.cs

using System;
using InABox.Core;

namespace Comal.Classes
{
    public class ProductLookups : EntityLookup<Product>, ILookupDefinition<Product, StockMovement>, ILookupDefinition<Product, EmployeeProduct>
    {
        // EmployeeProduct records also require a Default Location to pull from
        public Filter<Product> DefineFilter(EmployeeProduct[] items)
        {
            return DefineFilter().And(x => x.NonStock).IsEqualTo(false).And(x => x.DefaultLocation).LinkValid();
        }

        Columns<EmployeeProduct> ILookupDefinition<Product, EmployeeProduct>.DefineFilterColumns()
            => new Columns<EmployeeProduct>();

        // You should not be able to create a stock movement for a non-stock item
        public Filter<Product> DefineFilter(StockMovement[] items)
        {
            return DefineFilter().And(x => x.NonStock).IsEqualTo(false);
        }

        Columns<StockMovement> ILookupDefinition<Product, StockMovement>.DefineFilterColumns()
            => new Columns<StockMovement>();

        public override Columns<Product> DefineColumns()
        {
            return new Columns<Product>(
                x => x.ID,
                x => x.Code,
                x => x.Name
            );
        }

        public override Filter<Product> DefineFilter()
        {
            return new Filter<Product>(x => x.Expired).IsEqualTo(DateTime.MinValue);
        }

        public override SortOrder<Product> DefineSortOrder()
        {
            return new SortOrder<Product>(x => x.Code);
        }
    }
}