public TransactionHistory RecordTransactionHistory(int sellerId, int buyerId, int sharesId, int quantity, DateTime dateTime)
{
using (TradingDBContext db = new TradingDBContext())
{
try
{
Client seller = db.Clients.Where(c => c.ClientID == sellerId).Single();
Client buyer = db.Clients.Where(c => c.ClientID == buyerId).Single();
Shares shares = db.Shares.Where(s => s.SharesID == sharesId).Single();
TransactionHistory newRecord = new TransactionHistory {
Seller = seller,
Buyer = buyer,
DateTime = dateTime,
Quantity = quantity,
SelledItem = shares
};
db.TransactionHistories.Add(newRecord);
db.SaveChanges();
return(newRecord);
}
catch (SystemException ex)
{
inputOutputDevice.Print($"{phraseProvider.GetPhrase("HistoryError")}: {ex.Message}");
return(new TransactionHistory());
}
}
}
public void GenerateTransactionParams(out int sellerId, out int buyerId, out int sharesId, out int quantity)
{
using (TradingDBContext db = new TradingDBContext())
{
try
{
Random random = new Random();
sellerId = db.Clients.ToList()[random.Next(0, 100) % db.Clients.ToList().Count].ClientID;
do
{
buyerId = db.Clients.ToList()[random.Next(0, 100) % db.Clients.ToList().Count].ClientID;
} while (sellerId == buyerId);
sharesId = db.Shares.ToList()[random.Next(0, 100) % db.Shares.ToList().Count].SharesID;
quantity = random.Next(1, settings.MaxSharesToSell);
return;
}
catch (SystemException ex)
{
throw ex;
}
}
}
private bool Transaction(int sellerId, int buyerId, int sharesId, int quantity, out DateTime TransactionDateTime)
{
using (TradingDBContext db = new TradingDBContext())
{
using (var transaction = db.Database.BeginTransaction())
{
try
{
Client seller = db.Clients.Where(c => c.ClientID == sellerId).First();
Client buyer = db.Clients.Where(c => c.ClientID == buyerId).First();
string sellerInfo = $"Seller: {seller.Name}, Balance: {seller.Balance}";
string buyerInfo = $"Buyer: {buyer.Name}, Balance: {buyer.Balance}";
Logger.Log.Info(sellerInfo);
Logger.Log.Info(buyerInfo);
if (buyer.Zone == "Black")
{
throw new SystemException(phraseProvider.GetPhrase("BuyerInBlackZone"));
}
decimal sum = db.Shares.Where(s => s.SharesID == sharesId).First().Price *quantity;
seller.Balance += sum;
if (seller.Balance == 0M)
{
seller.Zone = "Orange";
}
if (seller.Balance > 0)
{
seller.Zone = "Free";
}
buyer.Balance -= sum;
if (buyer.Balance == 0M)
{
buyer.Zone = "Orange";
}
if (buyer.Balance < 0)
{
buyer.Zone = "Black";
}
ClientShares sellersItem = db.ClientShares.Where(
s => s.Shares.SharesID == sharesId).Where(
s => s.ClientID == sellerId).Single();
sellersItem.Quantity -= quantity;
ClientShares buyersItem = db.ClientShares.Where(
s => s.Shares.SharesID == sharesId).Where(
s => s.ClientID == buyerId).Single();
buyersItem.Quantity += quantity;
string sharesInfo = $"Shares type: {sellersItem.Shares.SharesType}, Quantity: {quantity}, Total: {sum}";
Logger.Log.Info(sharesInfo);
db.SaveChanges();
transaction.Commit();
this.inputOutputDevice.Print(this.phraseProvider.GetPhrase("Success"));
Logger.Log.Info(phraseProvider.GetPhrase("Success"));
sellerInfo = $"Seller: {seller.Name}, Balance: {seller.Balance}";
buyerInfo = $"Buyer: {buyer.Name}, Balance: {buyer.Balance}";
Logger.Log.Info(sellerInfo);
Logger.Log.Info(buyerInfo);
TransactionDateTime = DateTime.Now;
return(true);
}
catch (System.Data.Entity.Validation.DbEntityValidationException)
{
transaction.Rollback();
this.inputOutputDevice.Print($"{this.phraseProvider.GetPhrase("Failure")}: " +
$"{this.phraseProvider.GetPhrase("Validation")}");
Logger.Log.Info($"{this.phraseProvider.GetPhrase("Failure")}: " +
$"{this.phraseProvider.GetPhrase("Validation")}");
TransactionDateTime = DateTime.Now;
return(false);
}
catch (SystemException ex)
{
transaction.Rollback();
this.inputOutputDevice.Print($"{this.phraseProvider.GetPhrase("Failure")}: {ex.Message}");
Logger.Log.Info($"{this.phraseProvider.GetPhrase("Failure")}: {ex.Message}");
TransactionDateTime = DateTime.Now;
return(false);
}
}
}
}
