/// <summary>
/// The method to calculate profit or loss.
/// </summary>
/// <param name="userId">The User id.</param>
/// <returns>The profi or loss object.</returns>
public ProfitOrLoss GetProfitOrLoss(short userId)
{
try
{
buyingTransactionRep = new BuyingTransactionRepository();
Domain.Layer.Transactions.BuyingTransaction buyingTransaction = buyingTransactionRep.GetLastBuyingTransaction(userId);
if (buyingTransaction != null)
{
productRep = new ProductRepository();
//Hard coded the product since we have only oone product with ID as 1 now.
if (CurrentGoldPricePerGram.Instance.currentGoldPricePerGram == null)
{
CurrentGoldPricePerGram.Instance.currentGoldPricePerGram = productRep.GetProduct(buyingTransaction.ProductId).PricePerGram;
}
sellingTransaction = new SellingTransaction();
return(sellingTransaction.GetProfitOrLoss(buyingTransaction));
}
else
{
return(null);
}
}
catch (Exception ex)
{
return(null);
}
}
/// <summary>
/// The method to create
/// </summary>
/// <param name="buyingTransaction"></param>
/// <returns>Return true or false; true indicates the the creation is successful.</returns>
public bool CreateBuyingTransaction(Domain.Layer.Transactions.BuyingTransaction buyingTransaction)
{
dbContext.BuyingTransactions.Add(MapTransaction(buyingTransaction));
var result = dbContext.SaveChanges();
return(result > 0 ? true : false);
}
private BuyingTransaction MapTransaction(Domain.Layer.Transactions.BuyingTransaction buyingTransaction)
{
return(new BuyingTransaction()
{
ProductId = buyingTransaction.ProductId,
PurchasedDate = buyingTransaction.PurchasedDate,
PurchasedPrice = buyingTransaction.PurchasedPrice,
PurchasedQuantity = buyingTransaction.PurchasedQuantity,
PurchasedRatePerGram = buyingTransaction.PurchasedRatePerGram,
PurchasedTax = (decimal)((buyingTransaction.PurchasedPrice * DomainConstants.GST_PERCENTAGE) / 100),
PurchasedTotalPrice = (decimal)(buyingTransaction.PurchasedPrice + ((buyingTransaction.PurchasedPrice * DomainConstants.GST_PERCENTAGE) / 100)),
UserId = buyingTransaction.UserId,
PurchasedTransactionId = buyingTransaction.PurchasedTransactionId
});
}
/// <summary>
/// The method to create
/// </summary>
/// <param name="buyingTransaction"></param>
/// <returns>Return true or false; true indicates the the creation is successful.</returns>
public bool CreateBuyingTransaction(Domain.Layer.Transactions.BuyingTransaction buyingTransaction)
{
buyingTransactionRep = new BuyingTransactionRepository();
return(buyingTransactionRep.CreateBuyingTransaction(buyingTransaction));
}
/// <summary>
/// The method to calculate selling price per gram.
/// </summary>
/// <param name="buyingRatePerGram">The base buying rate per gram.</param>
/// <returns></returns>
private decimal CalculateSellingPricePerGram(BuyingTransaction lastBuyingTransaction)
{
return((decimal)CurrentGoldPricePerGram.Instance.currentGoldPricePerGram + DomainConstants.COMMISSION_PER_GRAM + (lastBuyingTransaction.PurchasedRatePerGram * 5) / 100);
}
/// <summary>
/// THe main public method to expose to orchastrator.
/// </summary>
/// <param name="lastBuyingTransaction">The method which gives last buying transaction.</param>
/// <returns></returns>
public ProfitOrLoss GetProfitOrLoss(BuyingTransaction lastBuyingTransaction)
{
return(GetProfitOrLoss(CalculatePurchasedPricePerGram(lastBuyingTransaction.PurchasedRatePerGram), CalculateSellingPricePerGram(lastBuyingTransaction)));
}