using System.ComponentModel.DataAnnotations.Schema;

namespace Distribution.Models
{
    /// <summary>One row per physical serial-tracked unit. Quantity is always 1.</summary>
    public class ItemSerialNumber : Template
    {
        public Guid FK_ItemId { get; set; }
        [ForeignKey("FK_ItemId")]
        public Item Item { get; set; }

        public string SerialNumber { get; set; }
        public SerialStatus Status { get; set; } = SerialStatus.InStock;

        public Guid? CurrentLocationId { get; set; }
        public LocationType? CurrentLocationType { get; set; }

        public DateTime ReceivedAt { get; set; }

        /// <summary>Snapshotted at receipt when Item.AllowCustomWarrantyPeriod is true; otherwise null and the system default applies when the warranty starts.</summary>
        public int? WarrantyPeriodDaysOverride { get; set; }

        /// <summary>Set when the serial is sold/delivered: sale date + (override ?? system default). Null while in stock or if Item.HasWarranty is false.</summary>
        public DateTime? WarrantyExpiresAt { get; set; }
    }
}