/**
 * usePreviewOffer - Lightweight offer preview without checkout sessions
 *
 * This hook provides a fast, client-side offer preview by:
 * 1. Fetching offer data with pre-computed summaries
 * 2. Allowing variant/quantity selection
 * 3. Recalculating totals on-the-fly without backend calls
 * 4. NO checkout session creation - perfect for browsing/previewing
 */
import { Offer } from '../../core/resources/offers';
export interface PreviewLineItemSelection {
    lineItemId: string;
    variantId: string;
    quantity: number;
    priceId?: string;
}
export interface PreviewOfferSummary {
    items: Array<{
        id: string;
        productId: string;
        variantId: string;
        priceId: string;
        productName: string;
        variantName: string;
        imageUrl: string | null;
        quantity: number;
        unitAmount: number;
        amount: number;
        adjustedAmount: number;
        currency: string;
    }>;
    totalAmount: number;
    totalAdjustedAmount: number;
    totalPromotionAmount: number;
    currency: string;
    options: Record<string, Array<{
        variantId: string;
        variantName: string;
        sku: string | null;
        imageUrl: string | null;
        prices: Array<{
            id: string;
            currencyOptions: Record<string, {
                amount: number;
                currency: string;
            }>;
        }>;
        default: boolean;
    }>>;
}
export interface UsePreviewOfferOptions {
    offerId: string;
    currency?: string;
    initialSelections?: Record<string, PreviewLineItemSelection>;
}
export interface UsePreviewOfferResult {
    offer: Offer | null;
    isLoading: boolean;
    isFetching: boolean;
    isPaying: boolean;
    error: Error | null;
    summary: PreviewOfferSummary | null;
    selections: Record<string, PreviewLineItemSelection>;
    selectVariant: (lineItemId: string, variantId: string) => void;
    updateQuantity: (lineItemId: string, quantity: number) => void;
    selectVariantByProduct: (productId: string, variantId: string) => void;
    updateQuantityByProduct: (productId: string, quantity: number) => void;
    getAvailableVariants: (productId: string) => Array<{
        variantId: string;
        variantName: string;
        imageUrl: string | null;
        unitAmount: number;
        currency: string;
    }>;
    pay: (mainOrderId?: string) => Promise<{
        checkoutUrl: string;
    }>;
    toCheckout: (mainOrderId?: string) => Promise<{
        checkoutToken: string;
        customerId: string;
        status: 'processing';
    }>;
}
export declare function usePreviewOffer(options: UsePreviewOfferOptions): UsePreviewOfferResult;