import type { CartLine } from './cart.js';
import type { CurrencyCode, MinorUnits, ShippingOption } from './types.js';
/**
 * What a merchant adapter read off the page, before any of it is believed.
 *
 * Every field is a raw string, deliberately. An adapter that returned numbers
 * would be doing the parsing, which would put a copy of the parse rules in every
 * adapter and make each new merchant a new chance to get them wrong.
 */
export interface RawCheckoutReading {
    readonly lines: readonly {
        readonly label: string;
        readonly quantity: string;
        readonly unitPrice: string;
    }[];
    readonly tax: string | null;
    readonly fees: readonly {
        readonly label: string;
        readonly amount: string;
    }[];
    readonly shippingOptions: readonly {
        readonly label: string;
        readonly cost: string;
    }[];
    /** The page's own stated grand total. Used to contradict us, never to inform us. */
    readonly statedTotal: string | null;
    /** ISO-4217 as the page presented it, when it presented one at all. */
    readonly currency: string | null;
    /**
     * The order summary as text, for `detectRecurringCharge`.
     *
     * The one place raw page text is read to look for a reason to STOP. Untrusted
     * content may always talk us out of an action; what it may never do is talk us
     * into one.
     */
    readonly orderSummaryText: string;
}
/** The same checkout, in integers this code produced. */
export interface ExtractedCheckout {
    readonly currency: CurrencyCode;
    readonly lines: readonly CartLine[];
    readonly itemMinorUnits: MinorUnits;
    readonly taxMinorUnits: MinorUnits;
    readonly feesMinorUnits: MinorUnits;
    readonly feeLabels: readonly string[];
    readonly shippingOptions: readonly ShippingOption[];
    /** Item + tax + fees. Delivery is added once a tier is chosen. */
    readonly subtotalMinorUnits: MinorUnits;
    readonly orderSummaryText: string;
}
export type ExtractionResult = {
    readonly ok: true;
    readonly checkout: ExtractedCheckout;
} | {
    readonly ok: false;
    readonly reason: string;
    readonly field: string;
};
/**
 * Turn a reading into integers, or refuse and say which field defeated it.
 *
 * `fallbackCurrency` is the budget's currency, used only when the page states
 * none. It is not used to override a currency the page DID state: a page priced
 * in one currency and a budget in another is a mismatch `decidePurchase` refuses
 * on, and quietly relabelling the page's number with our currency code is how
 * that refusal would be bypassed.
 */
export declare function extractCheckout(raw: RawCheckoutReading, fallbackCurrency: CurrencyCode): ExtractionResult;
//# sourceMappingURL=checkout-extraction.d.ts.map