using System;
using System.Linq.Expressions;
using InABox.Core;
using PRSClasses;

namespace Comal.Classes
{
    [UserTracking(typeof(Requisition))]
    public class RequisitionItem : StockEntity, IPersistent, IRemotable, INumericAutoIncrement<RequisitionItem>, IOneToMany<Invoice>
        , ILicense<LogisticsLicense>, IJobMaterial
    {
        [IntegerEditor(Editable = Editable.Hidden)]
        [NullEditor]
        public int Sequence { get; set; }

        [EntityRelationship(DeleteAction.Cascade)]
        [NullEditor]
        public RequisitionLink RequisitionLink { get; set; }

        [EntityRelationship(DeleteAction.Cascade)]
        [NullEditor]
        public JobLink Job { get; set; }

        [EditorSequence(1)]
        [RequiredColumn]
        public override ProductLink Product { get; set; }
        
        [EditorSequence(3)]
        [CodeEditor(Visible = Visible.Optional)]
        public string Code { get; set; }

        [MemoEditor]
        [EditorSequence(4)]
        public string Description { get; set; }

        [EditorSequence(5)]
        [RequiredColumn]
        public ProductStyleLink Style { get; set; }

        [EditorSequence(6)]
        [RequiredColumn]
        [DimensionsEditor(typeof(StockDimensions), AllowEditingUnit = false)]
        public override StockDimensions Dimensions { get; set; }

        [EditorSequence(7)]
        public double Quantity { get; set; }

        [EditorSequence(8)]
        [RequiredColumn]
        public StockLocationLink Location { get; set; }

        [EditorSequence(9)]
        [TimestampEditor]
        public DateTime Picked { get; set; }
        
        [NullEditor]
        public string BarCode { get; set; }
        
        [NullEditor]
        public InvoiceLink Invoice { get; set; }

        [EditorSequence("Processing",1)]
        public ActualCharge Charge { get; set; }
        
        public Expression<Func<RequisitionItem, int>> AutoIncrementField()
        {
            return x => x.Sequence;
        }

        public Filter<RequisitionItem> AutoIncrementFilter()
        {
            return new Filter<RequisitionItem>(x => x.RequisitionLink.ID).IsEqualTo(RequisitionLink.ID);
        }

        protected override void Init()
        {
            base.Init();
            RequisitionLink = new RequisitionLink();
            Job = new JobLink();
            Location = new StockLocationLink();
            Style = new ProductStyleLink(() => this);
            Invoice = new InvoiceLink();
            Charge = new ActualCharge();
        }

        static RequisitionItem()
        {
            LinkedProperties.Register<RequisitionItem, ProductLink, String>(x => x.Product, x => x.Code, x => x.Code);
            LinkedProperties.Register<RequisitionItem, ProductLink, String>(x => x.Product, x => x.Name, x => x.Description);
            LinkedProperties.Register<RequisitionItem, ProductLink, bool>(x => x.Product, x => x.Charge.Chargeable, x => x.Charge.Chargeable);
            LinkedProperties.Register<RequisitionItem, ProductStyleLink, Guid>(x=>x.Product.DefaultStyle, x => x.ID, x => x.Style.ID);
            LinkedProperties.Register<RequisitionItem, StockLocationLink, Guid>(x=>x.Product.DefaultLocation, x => x.ID, x => x.Location.ID);
            StockEntity.LinkStockDimensions<RequisitionItem>();
        }
    }
}