prs/prs.classes/Entities/Product/Instance/ProductInstanceLookups.cs

using InABox.Core;
using System;
using System.Collections.Generic;
using System.Text;

namespace Comal.Classes
{
    public class ProductInstanceLookups : EntityLookup<ProductInstance>,  ILookupDefinition<ProductInstance, Product>
    {
        
        #region Default Lookups (should always be empty)
        public override Filter<ProductInstance>? DefineFilter()
        {
            return new Filter<ProductInstance>().None();
        }

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

        #endregion
        
        public override string FormatLookup(Dictionary<string, object?> values, IEnumerable<string> exclude)
        {
            List<object> result = new List<object>();
            if (values.TryGetValue("Dimensions.UnitSize", out object size) && !String.IsNullOrWhiteSpace(size?.ToString()))
                result.Add(size);
            if (values.TryGetValue("Style.Description", out object description) && !String.IsNullOrWhiteSpace(description?.ToString()))
                result.Add(description);
            return String.Join(" ", result);
        }
        
        #region Lookups for Products
        
        public Filter<ProductInstance>? DefineFilter(Product[] items)
        {
            if (items.Length == 0)
            {
                return new Filter<ProductInstance>().None();
            }
            else
            {
                var filter = new Filters<ProductInstance>();
                foreach (var item in items)
                {
                    filter.Add(new Filter<ProductInstance>(x => x.Product.ID).IsEqualTo(item.ID));
                }
                return filter.Combine();
            }
        }

        public Columns<Product> DefineFilterColumns() => new Columns<Product>(x => x.ID);
        
        #endregion

    }
}