public async Task <int> AddNewAccountsAsync(IEnumerable <Account> accounts)
{
var existingAccounts = GetAllDbAccounts();
var newAccounts = accounts
.Where(a => !existingAccounts.Any(ea => ea.Id == a.Id))
.ToList();
await _accountContext.AddRangeAsync(newAccounts.Select(na => na.ToDataModel()));
_logger.LogDebug($"Added {newAccounts.Count} new accounts");
await _accountContext.SaveChangesAsync();
return(newAccounts.Count);
}
