export type BillingScope = {
    type: "user";
    userId: string;
} | {
    type: "organization";
    organizationId: string;
    organizationSlug: string;
};
export type BillingInterval = "one-time" | "month" | "year";
export type BillingPrice = {
    id: string;
    amount: number;
    currency: string;
    interval: BillingInterval;
    intervalCount?: number;
};
export type BillingPlan = {
    id: string;
    name: string;
    description?: string;
    prices: BillingPrice[];
    features?: string[];
    highlighted?: boolean;
    seatBased?: boolean;
};
export type BillingSubscriptionStatus = "active" | "trialing" | "past_due" | "paused" | "canceled" | "incomplete" | "unknown";
export type BillingSubscription = {
    id: string;
    planId: string;
    priceId?: string;
    interval?: BillingInterval;
    planName?: string;
    status: BillingSubscriptionStatus;
    currentPeriodEnd?: Date;
    cancelAtPeriodEnd?: boolean;
    canceledAt?: Date;
    seats?: number;
};
export type BillingUsage = {
    id: string;
    label: string;
    used: number;
    limit?: number;
    unit?: string;
};
export type BillingState = {
    subscription?: BillingSubscription;
    usage: BillingUsage[];
};
export type BillingCheckoutInput = {
    planId: string;
    priceId: string;
    seats?: number;
};
export type BillingActionResult = {
    url?: string;
};
export type BillingCapabilities = {
    cancel: boolean;
    restore: boolean;
    seats: boolean;
};
export type BillingScopeCapabilities = {
    user: boolean;
    organization: boolean;
};
/** Provider-neutral billing operations consumed by every BAUI billing view. */
export interface BillingAdapter {
    readonly id: string;
    readonly supports: BillingCapabilities;
    /** Billing scopes supported by the provider client. Omit for custom adapters. */
    readonly scopes?: BillingScopeCapabilities;
    listPlans(scope: BillingScope, signal?: AbortSignal): Promise<BillingPlan[]>;
    getState(scope: BillingScope, signal?: AbortSignal): Promise<BillingState>;
    checkout(scope: BillingScope, input: BillingCheckoutInput): Promise<BillingActionResult>;
    openPortal(scope: BillingScope): Promise<BillingActionResult>;
    cancel(scope: BillingScope, subscriptionId: string): Promise<BillingActionResult>;
    restore(scope: BillingScope, subscriptionId: string): Promise<BillingActionResult>;
    updateSeats(scope: BillingScope, subscriptionId: string, seats: number): Promise<BillingActionResult>;
}
export declare const billingScopeKey: (scope: BillingScope) => string;
export declare function followBillingAction(result: BillingActionResult): void;