public async Task <string> GetOrCreateReferralForCustomerIdAsync(Guid customerId)
{
var existingReferral = await _referralRepository.GetByCustomerIdAsync(customerId);
if (existingReferral != null)
{
return(existingReferral.ReferralCode);
}
var referralCode = await GenerateReferralCodeAsync(customerId.ToString("D"));
await _referralRepository.CreateIfNotExistAsync(new Domain.Models.Referral()
{
CustomerId = customerId,
Id = Guid.NewGuid().ToString("D"),
ReferralCode = referralCode
});
return(referralCode);
}