/// <summary>
/// Allows admin user to view the sum of all sold books
/// </summary>
/// <param name="adminId"></param>
private void ViewTotalIncome(int adminId)
{
WebbShopAPI api = new WebbShopAPI();
var totalIncome = api.MoneyEarned(adminId);
if (totalIncome != 0)
{
AdminView.DisplayMoneyEarned(totalIncome);
return;
}
MessageViews.DisplayErrorMessage();
}
