using ERPCore.Domain.Enums;

namespace ERPCore.Domain.Entities;

/// <summary>
/// Item type master (FR-MD-10) — a selectable dimension name such as Color, Size or
/// Material.
/// <para>
/// <b>Deliberately unlinked.</b> Nothing references this entity and it references
/// nothing: there is no value table and no join to <see cref="Item"/>. Its only job is
/// to feed the frontend's item-builder dropdown via <c>GET /item-types</c>. The chosen
/// values (Red, S, M) are encoded by the client into the generated SKU
/// (e.g. <c>BL-100-0003</c>) and are never stored or parsed server-side — the item list
/// is the record of what was built. See the accepted trade-off in docs/10 Part C.9.
/// </para>
/// Not to be confused with <see cref="Enums.StockNature"/> (Stocked/NonStocked/Service),
/// which is what the old <c>ItemType</c> enum became.
/// Model: docs/10-BACKEND-PHASE1.md Part C.1.
/// </summary>
public class ItemType
{
    public int ItemTypeId { get; set; }
    public string Name { get; set; } = string.Empty;
    public EntityStatus Status { get; set; } = EntityStatus.Active;

    public DateTime CreatedAt { get; set; }
    public DateTime? UpdatedAt { get; set; }

    /// <summary>PostgreSQL xmin-backed optimistic concurrency token (ETag source).</summary>
    public uint RowVersion { get; set; }
}
