/// <summary>
/// making sure that it can update stock without violating specified
/// codition in each helper method.
/// </summary>
/// <param name="doctype"></param>
/// <param name="tranquantity"></param>
/// <returns>bool</returns>
public bool CanUpdateValid(SouceDocType doctype, int tranquantity)
{
bool canupdate = false;
switch (doctype)
{
case SouceDocType.INVOICE:
canupdate = ByInvoice(tranquantity);
break;
case SouceDocType.GRNTOSTORSE:
canupdate = ByGrn(tranquantity);
break;
case SouceDocType.GTNTOSUPPLIER:
canupdate = ByGtn(tranquantity);
break;
case SouceDocType.INVREMOVE:
canupdate = ByInvoiceRemove(tranquantity);
break;
default:
break;
}
return(canupdate);
}
/// <summary>
/// update stock quntities based on soucedocument type
/// </summary>
/// <param name="doctype"></param>
/// <param name="quantity"></param>
/// <returns>int</returns>
public int MakeUpdate(SouceDocType doctype, int quantity)
{
int updatequantity = 0;
switch (doctype)
{
case SouceDocType.INVOICE:
this.Quntity -= quantity;
break;
case SouceDocType.GRNTOSTORSE:
this.Quntity += quantity;
break;
case SouceDocType.GTNTOSUPPLIER:
this.Quntity -= quantity;
break;
case SouceDocType.INVREMOVE:
this.Quntity += quantity;
break;
default:
break;
}
return(updatequantity = quantity);
}
/// <summary>
/// Update stock when add /delete and update trasaction happend
/// in the system
/// </summary>
/// <param name="doctype"></param>
/// <param name="productid"></param>
/// <param name="quantity"></param>
/// <returns>int</returns>
public int UpdateStock(SouceDocType doctype, string productid, int quantity)
{
int updatedQty = 0;
using (var stockItems = _stock.GetEnumerator())
{
while (stockItems.MoveNext())
{
// making sure that product is correct available and apdate is valid
//one based on the soucedocument
if (stockItems.Current.IsCorrectProductId(productid) &&
stockItems.Current.CanUpdateValid(doctype, quantity))
{
// update stock based on the souce document type
updatedQty += stockItems.Current.MakeUpdate(doctype, quantity);
}
}
}
return(updatedQty);
}