referrer

type Referrent interface {
	Id() string
	Kind() string
	Total() currency.Cents
}

type Referrer struct {
	mixin.Model[Referrer]

	Code      string                          `json:"code"`
	Program   referralprogram.ReferralProgram `json:"program"`
	ProgramId string                          `json:"programId"`
	OrderId   string                          `json:"orderId"`
	UserId    string                          `json:"userId"`

	AffiliateId     string              `json:"affiliateId,omitempty"`
	Affiliate       affiliate.Affiliate `json:"affiliate,omitempty" datastore:"-"`
	FirstReferredAt time.Time           `json:"firstReferredAt"`

	Client      client.Client `json:"-"`
	Blacklisted bool          `json:"blacklisted,omitempty"`
	Duplicate   bool          `json:"duplicate,omitempty"`

	State  Map    `json:"state,omitempty" datastore:"-"`
	State_ string `json:"-" datastore:",noindex"`
}