graycoreio/daffodil

import { Observable } from 'rxjs';

import {
  DaffCartShippingRate,
  DaffCart,
} from '@daffodil/cart';
import { createSingletonInjectionToken } from '@daffodil/core';

/**
 * The interface responsible for mediating the interaction of the shipping
 * information of a cart with a given platform.
 */
export interface DaffCartShippingInformationServiceInterface<T extends DaffCart = DaffCart>{
  /**
   * Get the currently selected shipping method of a cart.
   */
  get(cartId: T['id']): Observable<T['shipping_information']>;

  /**
   * Update the currently selected shipping method of a cart.
   */
  update(cartId: T['id'], shippingInfo: Partial<T['shipping_information']>): Observable<Partial<T>>;

  /**
   * Remove the currently selected shipping method from a cart.
   */
  delete(cartId: T['id'], id?: T['shipping_information']['id']): Observable<Partial<T>>;
}

export const {
  token: DaffCartShippingInformationDriver,
  /**
   * Provider function for {@link DaffCartShippingInformationDriver}.
   */
  provider: provideDaffCartShippingInformationDriver,
} = createSingletonInjectionToken<DaffCartShippingInformationServiceInterface>('DaffCartShippingInformationDriver');