using System.ComponentModel.DataAnnotations.Schema;

namespace Distribution.Models
{
    public class PurchaseOrderItem : Template
    {
        public Guid FK_PurchaseOrderId { get; set; }
        [ForeignKey("FK_PurchaseOrderId")]
        public PurchaseOrder PurchaseOrder { get; set; }

        public Guid FK_ItemId { get; set; }
        [ForeignKey("FK_ItemId")]
        public Item Item { get; set; }

        public int Quantity { get; set; }

        /// <summary>Agreed cost per unit at the time the PO was issued.</summary>
        public decimal UnitCost { get; set; }

        /// <summary>Running total, incremented by createGoodsReceipt; drives PurchaseOrder.Status.</summary>
        public int ReceivedQuantity { get; set; } = 0;

        /// <summary>
        /// Set by cancelPurchaseOrderLine. Outstanding qty for receiving purposes is
        /// Quantity - ReceivedQuantity - CancelledQuantity.
        /// </summary>
        public int CancelledQuantity { get; set; } = 0;

        /// <summary>True once this line is individually cancelled.</summary>
        public bool IsCancelled { get; set; } = false;
    }
}