public void CreateStart(int userId)
{
var dbTransaction = new DBTransaction()
{
SenderUserId = null,
ReceiverUserId = userId,
Amount = 500,
CreatedAt = DateTime.Now
};
_transactionRepository.Create(dbTransaction);
}
private decimal GetBalanceAfterApplyTransaction(int userId, DBTransaction dbTransaction)
{
var positiveTransaction = _transactionRepository
.Find(transaction => (transaction.CreatedAt < dbTransaction.CreatedAt ||
transaction.CreatedAt == dbTransaction.CreatedAt && transaction.Id <= dbTransaction.Id) &&
transaction.ReceiverUserId == userId);
var negativeTransaction = _transactionRepository
.Find(transaction => (transaction.CreatedAt < dbTransaction.CreatedAt ||
transaction.CreatedAt == dbTransaction.CreatedAt && transaction.Id <= dbTransaction.Id) &&
transaction.SenderUserId == userId);
return(positiveTransaction.Sum(transaction => transaction.Amount) - negativeTransaction.Sum(transaction => transaction.Amount));
}
private Transaction Map(DBTransaction dbTransaction)
{
return(AutoMapperConfiguration.Mapper.Map(dbTransaction, new Transaction()));
}