public override void Process()

in src/Feature/Account/code/Pipelines/Customers/UpdateParties.cs [40:101]
52 lines of code
9 McCabe index (conditional complexity)

        public override void Process(Commerce.Pipelines.ServicePipelineArgs args)
        {
            Assert.ArgumentNotNull(args, "args");
            Assert.ArgumentCondition(args.Request is UpdatePartiesRequest, "args.Request", "args.Request is UpdatePartiesRequest");
            Assert.ArgumentCondition(args.Result is CustomerResult, "args.Result", "args.Result is CustomerResult");

            var request = (UpdatePartiesRequest)args.Request;
            var result = (CustomerResult)args.Result;

            Profile customerProfile = null;
            var response = this.GetCommerceUserProfile(request.CommerceCustomer.ExternalId, ref customerProfile);
            if (!response.Success)
            {
                result.Success = false;
                response.SystemMessages.ToList().ForEach(m => result.SystemMessages.Add(m));
                return;
            }

            string preferredAddress = customerProfile["GeneralInfo.preferred_address"].Value as string;

            var profileValue = customerProfile["GeneralInfo.address_list"].Value as object[];
            if (profileValue != null)
            {
                var e = profileValue.Select(i => i.ToString());
                var addressList = new ProfilePropertyListCollection<string>(e);

                foreach (var partyToUpdate in request.Parties)
                {
                    Assert.IsTrue(partyToUpdate is CommerceParty, "partyToUpdate is CommerceParty");

                    var foundId = addressList.Where(x => x.Equals(partyToUpdate.ExternalId, StringComparison.OrdinalIgnoreCase)).FirstOrDefault();
                    if (foundId != null)
                    {
                        Profile commerceAddress = null;
                        response = this.GetCommerceAddressProfile(foundId, ref commerceAddress);
                        if (!response.Success)
                        {
                            result.Success = false;
                            response.SystemMessages.ToList().ForEach(m => result.SystemMessages.Add(m));
                            return;
                        }

                        // Check if the IsPrimary address flag has been flipped.
                        if (((CommerceParty)partyToUpdate).IsPrimary)
                        {
                            customerProfile["GeneralInfo.preferred_address"].Value = partyToUpdate.ExternalId;
                            customerProfile.Update();
                        }
                        else if (!string.IsNullOrWhiteSpace(preferredAddress) && preferredAddress.Equals(partyToUpdate.ExternalId, StringComparison.OrdinalIgnoreCase))
                        {
                            customerProfile["GeneralInfo.preferred_address"].Value = System.DBNull.Value;
                            customerProfile.Update();
                        }

                        var translateToEntityRequest = new TranslateEntityToCommerceAddressProfileRequest((CommerceParty)partyToUpdate, commerceAddress);
                        PipelineUtility.RunCommerceConnectPipeline<TranslateEntityToCommerceAddressProfileRequest, CommerceResult>(CommerceServerStorefrontConstants.PipelineNames.TranslateEntityToCommerceAddressProfile, translateToEntityRequest);

                        commerceAddress.Update();
                    }
                }
            }
        }