using GB5Shared.DTO.Framework.Login;
using MMDAL.DTO.StockValuation;
using System.Data.Common;

namespace MMBLL.FifoLayerCost;

public interface IFifoLayerCostBLL
{
    /// <summary>
    /// Creates a new cost layer when stock is received for a non-lot FIFO/LIFO item.
    /// One layer per TSTOCKLEDGER receipt row.
    /// </summary>
    Task CreateLayerAsync(
        int itemId, int skuId, int storeId, int ouid,
        decimal quantity, decimal unitCost,
        int objectTypeId, int objectId, long stockLedgerId,
        DateOnly layerDate,
        LoginDTO login, DbTransaction tx, CancellationToken ct);

    /// <summary>
    /// Allocates cost layers for an issue and returns the blended cost.
    /// Decrements TCOSTLAYER.RemainingQuantity and writes TCOSTLAYERDETAIL audit rows.
    /// The returned BlendedUnitCost is written to TSTOCKLEDGER.PostedCost by the caller.
    /// </summary>
    Task<FifoBlendedCostDTO> AllocateLayersAsync(
        int itemId, int skuId, int storeId, int ouid,
        decimal issueQty, bool isLifo,
        long issueStockLedgerId,
        LoginDTO login, DbTransaction tx, CancellationToken ct);

    /// <summary>
    /// Returns open cost layers for the cost workings / audit report.
    /// </summary>
    Task<string> GetOpenCostLayersAsync(
        int itemId, int skuId, int storeId, int ouid,
        LoginDTO login, CancellationToken ct);
}