/// <summary>
/// Returns all vouchers created by a merchant regardless of the their type
/// </summary>
/// <param name="merchantId">the id of the merchant that created the vouchers</param>
/// <returns>a list of vouchers</returns>
public async Task <IEnumerable <Voucher> > GetAllVouchers(string merchantId)
{
var vouchers = await _baseRepository.GetAllVouchersFilterByMerchantIdAsync(merchantId);
foreach (var voucher in vouchers)
{
string decryptedCode = CodeGenerator.Decrypt(voucher.Code);
voucher.Code = decryptedCode;
}
return(vouchers);
}