/* 
I am having trouble using useInfiniteQuery with a paginated graphql API.

The query expects a `page` variable that is used to get a specific page dataset. 
I am currently updating the `page` variable on click the `load more button` and calling the fetchNextPage function.

While this works in terms of getting the next set of data, react-query seems to be returning only on page 
instead of returning the previous page + the current page's results. Hence, the results are from the initial page or last page results.

How do I get back results from all the pages? 

*/
export default () => {
    const [page, setPage] = useState(1);
    const {
        data,
        fetchNextPage,
        hasNextPage
    } = useInfiniteQuery(["data", page], () => getPaginatedProductItems({
        per_page: 10,
        page // <- note these variables passed specifically this one. It's used to get a specific page dataset
    }), {
    getNextPageParam(lastPage) {
        return lastPage.paginated_product_items_v2.page_info.has_next;
      },
      getPreviousPageParam(firstPage) {
        return firstPage.paginated_product_items_v2.page_info.has_previous;
      },
    });

    return (<div>
            {hasNextPage && < button onClick={() => {
			setPage(page + 1); // this is updated so that the API can get the next page of data
			fetchNextPage()
}
}> Fetch Next page </button>}
	    </div>)
};