import { ApolloLink, from, HttpLink } from '@apollo/client/core';

type Parameters = { token: null | string | undefined; uri: string };

export function createLink({ token, uri }: Parameters) {
  const cacheLink = new ApolloLink((operation, forward) => {
    return forward(operation);
  });

  const httpLink = new HttpLink({
    headers: token ? { Authorization: `Bearer ${token}` } : undefined,
    uri,
  });

  return from([cacheLink, httpLink]);
}