import type { Request, RequestHandler } from "express";
import type { TollgateConfig } from "./config.js";
import { type MerchantEntry } from "./merchants.js";
import { type GasFloorService } from "./gas-floor.js";
/** @deprecated Import from `./networks.js`. */
export { DEFAULT_USDC } from "./networks.js";
export { usdcForNetwork } from "./networks.js";
export interface PaymentLayerOptions {
    /** Shared gas-floor service (tests / app). Created from config when omitted. */
    gasFloor?: GasFloorService;
}
export type ResolveSellerPayToOptions = {
    feeFreeBelowUsdc?: bigint;
    network?: string;
    asset?: `0x${string}`;
};
/** Resolve permissionless seller payTo from amount + config (threshold / CREATE2). */
export declare function resolveSellerPayTo(config: TollgateConfig, amountAtomic: bigint | string, networkOrOptions?: string | ResolveSellerPayToOptions, assetOverride?: `0x${string}`): `0x${string}`;
export declare function buildAcceptEntries(config: TollgateConfig, opts: {
    merchantPayTo?: `0x${string}`;
    sellerMode?: boolean;
    fallbackPayTo: string;
    feeFreeBelowUsdc?: bigint;
    /** Gas / static floor in 6-decimal USDC atomic units. */
    minAmountAtomic?: bigint;
}): Array<Record<string, unknown>>;
export interface PaymentLayer {
    middleware: RequestHandler;
    mode: "live" | "demo";
    payToEvmAddress?: string;
    /** Present when created via createPaymentLayer / createDemoPaymentLayer. */
    gasFloor?: GasFloorService;
}
/** Request locals set by merchant gate / rewrite wrappers. */
export type MerchantLocals = {
    merchantId?: string;
    merchant?: MerchantEntry;
    /** Permissionless seller path (no registry entry). */
    sellerMode?: boolean;
};
/**
 * Public resource URL for Bazaar / PAYMENT-REQUIRED.
 * Prefer PUBLIC_BASE_URL so TLS terminators (Render) never advertise http://.
 * Preserves path + query (fetch-md needs ?url=).
 */
export declare function buildPublicResourceUrl(config: TollgateConfig, req: Pick<Request, "originalUrl">): string;
/**
 * On gated paths: resolve merchant (query `merchant` / header `x-merchant-id` /
 * DEFAULT_MERCHANT) **or** permissionless seller mode when `config.seller` is set.
 * Unknown merchant → 400 `{error:"unknown_merchant"}`. Free paths pass through.
 *
 * When `REQUIRE_MERCHANT=true`, omitting merchant id → 400 `{error:"merchant_required"}`
 * (hosted multi-tenant harden — still applies if seller is unset).
 *
 * Permissionless: with `SELLER` / `x402Tollgate({ seller })` and no `?merchant=`,
 * registry is not required.
 */
export declare function withMerchantGate(middleware: RequestHandler, config: TollgateConfig): RequestHandler;
/**
 * Live SDK builds resource.url via ExpressAdapter.getUrl() =
 * `${req.protocol}://${host}${originalUrl}`. Behind Render, Node sees http
 * unless trust proxy is on. createX402Server has a single global payTo — rewrite
 * PAYMENT-REQUIRED resource.url to PUBLIC_BASE_URL and accepts[].payTo to the
 * resolved merchant FeeSplitter after the SDK sets the header.
 *
 * Also enforces the gas-aware minimum accept amount when the floor is active
 * (rewrites accepts[].amount upward; does not lower).
 */
export declare function withPublicResourceUrl(middleware: RequestHandler, config: TollgateConfig, gasFloor?: GasFloorService): RequestHandler;
/**
 * Live CDP facilitator path — official seller pattern.
 * Requires CDP_API_KEY_ID, CDP_API_KEY_SECRET, and X402_PAY_TO (or default merchant payTo).
 * Bazaar: createX402Server auto-injects bazaar; we override with discoverable + schemas.
 * Per-request merchant payTo is applied via PAYMENT-REQUIRED header rewrite (SDK payTo is global).
 */
export declare function createLivePaymentLayer(config: TollgateConfig, options?: PaymentLayerOptions): Promise<PaymentLayer>;
/**
 * Demo / offline payment middleware.
 * Returns a protocol-shaped 402 + PAYMENT-REQUIRED (with Bazaar extension) when gated and unpaid.
 * Uses resolved merchant FeeSplitter, or permissionless seller resolvePayTo, as payTo.
 */
export declare function createDemoPaymentLayer(config: TollgateConfig, options?: PaymentLayerOptions): PaymentLayer;
export declare function createPaymentLayer(config: TollgateConfig, options?: PaymentLayerOptions): Promise<PaymentLayer>;