using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using InABox.Core;

namespace Comal.Classes
{
    public class ShipmentItemCount : CoreAggregate<Shipment, DeliveryItem, Guid>
    {
        public override Expression<Func<DeliveryItem, Guid>> Aggregate => x => x.ID;

        public override AggregateCalculation Calculation => AggregateCalculation.Count;

        public override Dictionary<Expression<Func<DeliveryItem, object>>, Expression<Func<Shipment, object>>> Links =>
            new Dictionary<Expression<Func<DeliveryItem, object>>, Expression<Func<Shipment, object>>>()
            {
                { DeliveryItem => DeliveryItem.ShipmentLink.ID, Shipment => Shipment.ID }
            };
    }

    [UserTracking(typeof(Delivery))]
    public class Shipment : Entity, IPersistent, IRemotable, ILicense<LogisticsLicense>
    {
        [UniqueCodeEditor(Visible = Visible.Default, Editable = Editable.Enabled)]
        [EditorSequence(1)]
        public string Code { get; set; }

        [TextBoxEditor]
        [EditorSequence(2)]
        public string Description { get; set; }

        [TextBoxEditor]
        [EditorSequence(3)]
        public string Type { get; set; }

        [CodeEditor(Editable = Editable.Disabled)]
        [EditorSequence(4)]
        public string BarCode { get; set; }
            = CoreUtils.RandomHexString(16);

        [EditorSequence(5)]
        [EntityRelationship(DeleteAction.SetNull)]
        public GPSTrackerLink TrackerLink { get; set; }

        [EditorSequence(6)]
        [EntityRelationship(DeleteAction.SetNull)]
        public DeliveryLink Delivery { get; set; }

        [EditorSequence(7)]
        [IntegerEditor(Editable = Editable.Hidden)]
        [Aggregate(typeof(ShipmentItemCount))]
        public int ItemCount { get; set; }

        [Obsolete("Replaced with GPSTrackerLink")]
        [NullEditor]
        public Guid GPSTrackerID { get; set; }

        public override string ToString()
        {
            return string.Format("{0}: {1}", Code, Description);
        }
    }
}