import { CreateCheckoutParams, InferProduct } from '@betterstore/sdk';
type SDKLineItemCreate = CreateCheckoutParams["lineItems"][number];
/**
 * Utility type to pick required arguments from a type while making others optional
 */
type PickRequiredArguments<RequiredArgumentKeys extends string[], T extends object> = {
    [K in keyof T as K extends RequiredArgumentKeys[number] ? K : never]: T[K];
} & {
    [K in keyof T as K extends RequiredArgumentKeys[number] ? never : K]?: T[K];
};
/**
 * Default product type for line items - requires id, makes productVariants optional
 */
type DefaultLineItemCreateProductType = PickRequiredArguments<[
    "id"
], InferProduct> & {
    productVariants?: PickRequiredArguments<[
        "id"
    ], InferProduct<{
        with: {
            productVariants: true;
        };
    }>["productVariants"][number]>[];
};
/**
 * Optional parameters that can be passed when adding an item to the cart
 */
type LineItemOptionalParams = {
    quantity?: number;
    variantOptions?: {
        name: string;
        value: string;
    }[];
    metadata?: Record<string, any>;
};
/**
 * Represents a single line item in the cart
 */
export interface CartLineItem<ProductType extends DefaultLineItemCreateProductType = DefaultLineItemCreateProductType> extends Pick<SDKLineItemCreate & {
    productData: ProductType;
}, "metadata" | "quantity" | "variantOptions" | "productId" | "productData"> {
    id: string;
    selectedVariant: NonNullable<NonNullable<ProductType["productVariants"]>[number]> | null;
}
/**
 * Cart interface with all cart operations
 */
export interface Cart<ProductType extends DefaultLineItemCreateProductType = DefaultLineItemCreateProductType> {
    lineItems: CartLineItem<ProductType>[];
    addItem: (product: ProductType, additionalParams?: LineItemOptionalParams) => void;
    removeItem: (id: string) => void;
    updateQuantity: (id: string, quantity: number) => void;
    getProductQuantity: (productId: string) => number;
    clearCart: () => void;
}
/**
 * Hook to access the cart store
 */
export declare const useCart: <ProductType extends DefaultLineItemCreateProductType = DefaultLineItemCreateProductType>() => Cart<ProductType>;
export {};