public GoldReport(IDataSource dataSource)
{
_dataSource = dataSource ?? throw new ArgumentNullException(nameof(dataSource));
_roster = dataSource.GetRoster();
_tariff = dataSource.GetTariff();
_transactions = dataSource.GetTransactionHistory();
LastUpdated = dataSource.GetLastUpdatedDate();
Received = CurrencyAmount.Zero;
Refunded = CurrencyAmount.Zero;
SentToBanker = CurrencyAmount.Zero;
MailboxFees = CurrencyAmount.Zero;
PlayerReports = Enumerable.Empty <PlayerReport>();
_oddTransactions = new List <Transaction>();
_refunds = new List <Transaction>();
}