CREATE OR ALTER PROCEDURE [dbo].[Prc_P_PurchaseOrderRecalc]
    @Id uniqueidentifier
AS
BEGIN
    SET NOCOUNT ON;

    UPDATE Prc_T_PurchaseOrderLine SET Amount = ROUND(Quantity * UnitPrice, 2)
     WHERE PurchaseOrderId = @Id AND IsDeleted = 0;

    UPDATE o SET
        UntaxedAmount = ISNULL((SELECT SUM(l.Amount) FROM Prc_T_PurchaseOrderLine l WHERE l.PurchaseOrderId = @Id AND l.IsDeleted = 0), 0),
        TaxAmount = ISNULL((SELECT SUM(ROUND(l.Amount * l.TaxRate / 100, 2)) FROM Prc_T_PurchaseOrderLine l WHERE l.PurchaseOrderId = @Id AND l.IsDeleted = 0), 0),
        SourceDocument = STUFF((SELECT DISTINCT N', ' + r.RequestNo
                                  FROM Prc_T_PurchaseOrderLine l
                                  INNER JOIN Prc_T_MaterialRequestItem i ON i.Id = l.MaterialRequestItemId
                                  INNER JOIN Prc_T_MaterialRequest r ON r.Id = i.MaterialRequestId
                                 WHERE l.PurchaseOrderId = @Id AND l.IsDeleted = 0
                                   FOR XML PATH(''), TYPE).value('.', 'nvarchar(512)'), 1, 2, N'')
      FROM Prc_T_PurchaseOrder o
     WHERE o.Id = @Id;

    UPDATE Prc_T_PurchaseOrder SET TotalAmount = UntaxedAmount + TaxAmount WHERE Id = @Id;
END