public void SimulationDailyTransactions()
{
try
{
using (var context = new DailyTransactionSimulatorDbContext())
{
var transaction = CreateRandomTransaction();
var account = accounts.Where(a => a.AccountNo == transaction.AccountNo).FirstOrDefault();
var accountContext = new RandomAccountCreatorDbContext();
if (transaction.Type == TransactionType.Incoming)
{
account.Balance = account.Balance + transaction.Amount;
}
else if (transaction.Type == TransactionType.Outgoing)
{
var newBalance = account.Balance - transaction.Amount;
if (newBalance < 0)
{
transaction.Status = TransactionStatus.Failed;
transaction.Description = StatusDescription.InsufficientFund;
}
else
{
account.Balance = newBalance;
}
}
if (transaction.Status != TransactionStatus.Failed)
{
accountContext.Update(account);
if (accountContext.SaveChanges() == 1)
{
Console.WriteLine($"successfully updated account. new balance is {account.Balance}");
transaction.Status = TransactionStatus.Success;
transaction.Description = StatusDescription.Success;
}
else
{
transaction.Status = TransactionStatus.Failed;
transaction.Description = StatusDescription.SystemError;
Console.WriteLine("transaction failed to process");
}
}
context.Transactions.Update(transaction);
if (context.SaveChanges() == 1)
{
Console.WriteLine("successfully inserted transaction.");
}
}
}
catch (Exception ex)
{
Console.WriteLine("an error occured");
Console.WriteLine($"[Error Message] {ex.Message}");
}
}
public Transaction CreateRandomTransaction()
{
// create a transaction using a random account and channel
try
{
using (var context = new DailyTransactionSimulatorDbContext())
{
Console.WriteLine("Creating transaction...");
var transaction = new Transaction();
var accountIndex = Math.Abs((int)Math.Round(new Random().NextDouble() * (accounts.Count - 1), MidpointRounding.AwayFromZero));
var channelIndex = Math.Abs((int)Math.Round(new Random().NextDouble() * (channels.Count - 1), MidpointRounding.AwayFromZero));
transaction.AccountNo = accounts[accountIndex].AccountNo;
transaction.Channel = channels[channelIndex];
transaction.Amount = Math.Abs(Math.Round(new Random().NextDouble() * 100, MidpointRounding.AwayFromZero));
transaction.Date = DateTime.Now;
transaction.Type = transaction.Channel == Channel.CashDeposit || transaction.Channel == Channel.ChequeDeposit || transaction.Channel == Channel.DirectPayment
? TransactionType.Incoming
: TransactionType.Outgoing;
transaction.Description = StatusDescription.Pending;
transaction.Status = TransactionStatus.Pending;
context.Transactions.Add(transaction);
context.SaveChanges();
Console.WriteLine($"successfully created {transaction.Type.ToString()} {transaction.Channel} transacion with amount {transaction.Amount}");
return(transaction);
}
}
catch (Exception ex)
{
Console.WriteLine("An error occured while creating transaction");
Console.WriteLine($"[Error Message] {ex.Message}");
return(null);
}
}