/// <summary>
/// Calculate Cost based on Qty based on in Lifo/Fifo order
/// </summary>
/// <param name="product">product</param>
/// <param name="M_ASI_ID">costing level ASI</param>
/// <param name="mas">accounting schema</param>
/// <param name="Org_ID">costing level org</param>
/// <param name="ce">Cost Element</param>
/// <param name="Qty">quantity to be reduced</param>
/// <param name="trxName">transaction</param>
/// <returns>cost for qty or null of error</returns>
public static Decimal?GetCosts(MProduct product, int M_ASI_ID, MAcctSchema mas,
int Org_ID, MCostElement ce, Decimal Qty, Trx trxName)
{
if (Env.Signum(Qty) == 0)
{
return(Env.ZERO);
}
MCostQueue[] costQ = GetQueue(product, M_ASI_ID,
mas, Org_ID, ce, trxName);
//
Decimal cost = Env.ZERO;
Decimal remainingQty = Qty;
Decimal?firstPrice = null;
Decimal?lastPrice = null;
//
for (int i = 0; i < costQ.Length; i++)
{
MCostQueue queue = costQ[i];
// Negative Qty i.e. add
if (Env.Signum(remainingQty) <= 0)
{
Decimal oldQty = queue.GetCurrentQty();
lastPrice = queue.GetCurrentCostPrice();
Decimal costBatch = Decimal.Multiply((Decimal)lastPrice, remainingQty);
cost = Decimal.Add(cost, costBatch);
_log.Config("ASI=" + queue.GetM_AttributeSetInstance_ID()
+ " - Cost=" + lastPrice + " * Qty=" + remainingQty + "(!) = " + costBatch);
return(cost);
}
// Positive queue
if (Env.Signum(queue.GetCurrentQty()) > 0)
{
Decimal reduction = remainingQty;
if (reduction.CompareTo(queue.GetCurrentQty()) > 0)
{
reduction = queue.GetCurrentQty();
}
Decimal oldQty = queue.GetCurrentQty();
lastPrice = queue.GetCurrentCostPrice();
Decimal costBatch = Decimal.Multiply((Decimal)lastPrice, reduction);
cost = Decimal.Add(cost, costBatch);
_log.Fine("ASI=" + queue.GetM_AttributeSetInstance_ID()
+ " - Cost=" + lastPrice + " * Qty=" + reduction + " = " + costBatch);
remainingQty = Decimal.Subtract(remainingQty, reduction);
// Done
if (Env.Signum(remainingQty) == 0)
{
_log.Config("Cost=" + cost);
return(cost);
}
if (firstPrice == null)
{
firstPrice = lastPrice;
}
}
} // for queue
if (lastPrice == null)
{
lastPrice = MCost.GetSeedCosts(product, M_ASI_ID, mas, Org_ID,
ce.GetCostingMethod(), 0);
if (lastPrice == null)
{
_log.Info("No Price found");
return(null);
}
_log.Info("No Cost Queue");
}
Decimal costBatch1 = Decimal.Multiply((Decimal)lastPrice, remainingQty);
_log.Fine("RemainingQty=" + remainingQty + " * LastPrice=" + lastPrice + " = " + costBatch1);
cost = Decimal.Add(cost, costBatch1);
_log.Config("Cost=" + cost);
return(cost);
}