import { ApolloClient, createNetworkInterface } from 'apollo-client';
import { SubscriptionClient, addGraphQLSubscriptions } from 'subscriptions-transport-ws';
import ws from 'ws';
import config from '../config';

const wsClient = new SubscriptionClient(
   config.graphcool.subscriptionsUri,
   {
      reconnect: true
   },
   ws
);

const networkInterface = createNetworkInterface({
   uri: config.graphcool.uri
});

const networkInterfaceWithSubscriptions = addGraphQLSubscriptions(networkInterface, wsClient);

networkInterface.use([
   {
      applyMiddleware(req, next) {
         // Create the header object if needed.
         if (!req.options.headers) {
            req.options.headers = {};
         }

         req.options.headers.authorization = `Bearer ${config.graphcool.token}`;
         next();
      }
   }
]);

export default new ApolloClient({
   networkInterface: networkInterfaceWithSubscriptions
});