/// <summary>
/// Retreives the PendingTransaciton obejct from the list if present, then removes the instance from the list and
/// returns to the caller
/// </summary>
/// <param name="id"></param>
/// <param name="pendingEntityType"></param>
/// <returns></returns>
private PendingTransaction RemovePendingTransaction(string id, PendingTransactionType pendingEntityType)
{
PendingTransaction pendingTransaction = null;
if (PendingBalance > 0)
{
foreach (var tempPendingTransaction in _pendingTransactions)
{
if (tempPendingTransaction.InstanceId == id &&
tempPendingTransaction.PendingTransactionType == pendingEntityType)
{
pendingTransaction = tempPendingTransaction;
break;
}
}
// If the instance is found, remove it from pending transaction list and update the balance
if (pendingTransaction != null)
{
_pendingTransactions.Remove(pendingTransaction);
return(pendingTransaction);
}
}
else
{
Log.Error("No pending balance found for ID: " + id);
}
return(null);
}
/// <summary>
/// Adds a transaction for either a withdrawal or Order that is yet pending
/// </summary>
/// <returns></returns>
public bool AddPendingTransaction(string id, PendingTransactionType pendingEntityType, decimal amount)
{
// Add this pending transaction to the pending entities list. This entity can only be removed from this list
// when the transaction is compelte for this entity(Trade, Withdraw confirmed) or reverted in case of order
// cancelled
PendingTransaction pendingEntity = new PendingTransaction(Currency, id, pendingEntityType, amount, BalanceId);
_pendingTransactions.Add(pendingEntity);
// Deduct the amount
_availableBalance += amount;
return(true);
}
/// <summary>
/// Called when a transaction is confirmed, updates the balance and the Pending Transaction List accordingly
/// </summary>
/// <returns></returns>
public bool ConfirmPendingTransaction(string id, PendingTransactionType pendingEntityType, decimal amount)
{
PendingTransaction pendingTransaction = RemovePendingTransaction(id, pendingEntityType);
if (pendingTransaction != null)
{
// As the Pending transaction is confirmed for either withdraw or order
_currentBalance += amount;
return(true);
}
return(false);
}
/// <summary>
/// Handles the event of an order cancel, and restores amount to the available balance
/// </summary>
/// <param name="id"></param>
/// <param name="pendingEntityType"></param>
/// <param name="amount"></param>
/// <returns></returns>
public bool CancelPendingTransaction(string id, PendingTransactionType pendingEntityType, decimal amount)
{
PendingTransaction pendingTransaction = RemovePendingTransaction(id, pendingEntityType);
if (pendingTransaction != null)
{
// As the Pending transaction is cancelled for order
_availableBalance += amount;
return(true);
}
return(false);
}