import { useCallback } from 'react';
import type { MutationHook } from '@commerce/utils/types';
import useAddItem from '@commerce/wishlist/use-add-item';
import type { UseAddItem } from '@commerce/wishlist/use-add-item';
import useWishlist from './use-wishlist';
import type { ExplicitWishlistAddItemHook } from '../types';
import type {
  WishedItem,
  WishlistsAddWishedItem
} from '@spree/storefront-api-v2-sdk/types/interfaces/WishedItem';
import type { GraphQLFetcherResult } from '@commerce/api';
import ensureIToken from '../utils/tokens/ensure-itoken';
import type { IToken } from '@spree/storefront-api-v2-sdk/types/interfaces/Token';
import type { AddItemHook } from '@commerce/types/wishlist';
import isLoggedIn from '../utils/tokens/is-logged-in';

export default useAddItem as UseAddItem<typeof handler>;

export const handler: MutationHook<ExplicitWishlistAddItemHook> = {
  fetchOptions: {
    url: 'wishlists',
    query: 'addWishedItem'
  },
  async fetcher({ input, options, fetch }) {
    console.info(
      'useAddItem (wishlist) fetcher called. Configuration: ',
      'input: ',
      input,
      'options: ',
      options
    );

    const {
      item: { productId, variantId, wishlistToken }
    } = input;

    if (!isLoggedIn() || !wishlistToken) {
      return null;
    }

    let token: IToken | undefined = ensureIToken();

    const addItemParameters: WishlistsAddWishedItem = {
      variant_id: `${variantId}`,
      quantity: 1
    };

    await fetch<GraphQLFetcherResult<WishedItem>>({
      variables: {
        methodPath: 'wishlists.addWishedItem',
        arguments: [token, wishlistToken, addItemParameters]
      }
    });

    return null;
  },
  useHook: ({ fetch }) => {
    const useWrappedHook: ReturnType<MutationHook<AddItemHook>['useHook']> = () => {
      const wishlist = useWishlist();

      return useCallback(
        async (item) => {
          if (!wishlist.data) {
            return null;
          }

          const data = await fetch({
            input: {
              item: {
                ...item,
                wishlistToken: wishlist.data.token
              }
            }
          });

          await wishlist.revalidate();

          return data;
        },
        [wishlist]
      );
    };

    return useWrappedHook;
  }
};