declare const typeArray: readonly ["earned", "applied", "expired", "clawback", "manual_adjustment"];
export type ReferralCreditType = (typeof typeArray)[number];
/**
 * Signed ledger of referral credit — one row per money movement, balance is a SUM.
 *
 * The money is held here rather than pushed straight into the Stripe customer balance, because that
 * balance is a single number with no rules attached: no per-invoice cap, no expiry, and no clean
 * reversal. Keeping it here is what makes the 30%-per-invoice cap, the 12-month expiry and fraud
 * clawback enforceable. Each cycle only the slice that may be spent now
 * (`min(balance, 30% of the upcoming invoice subtotal)`) is pushed to Stripe as an `applied` row.
 *
 * `amountCents` is SIGNED: `earned` is positive, everything else negative. So:
 *   available balance = SUM(amountCents)
 *   total earned      = SUM(amountCents) WHERE type = 'earned'
 *   credit applied    = -SUM(amountCents) WHERE type = 'applied'
 * A negative overall balance is meaningful — it is a clawback of credit that an invoice had already
 * consumed, and is settled by pushing a positive (debit) transaction to Stripe.
 */
export declare class ReferralCredit {
    id: number;
    /** Null for manual CS adjustments, which are not tied to a referral. */
    referralId: number | null;
    clientId: number;
    /** Stripe customer the credit is pushed to. */
    customerId: string | null;
    type: ReferralCreditType;
    /** SIGNED — `earned` positive, `applied` / `expired` / `clawback` negative. */
    amountCents: number;
    issuedAt: Date;
    /** `issuedAt + 12 months`. Set on `earned` rows only. */
    expiresAt: Date | null;
    /**
     * Stripe customer balance transaction id. Unique, which is what makes the per-cycle drip idempotent
     * — a retried run cannot double-apply. Also carries the debit id when a clawback is settled.
     */
    stripeBalanceTxId: string | null;
    appliedInvoiceId: string | null;
    appliedAt: Date | null;
    /** CS user behind a manual adjustment or clawback. */
    adjustedByUsername: string | null;
    note: string | null;
    createdAt: Date | null;
    updatedAt: Date | null;
}
export {};