const apollo = require("./handlers/apollo");
const playground = require("./handlers/playground");
const setCors = require("./utils/setCors");

const graphQLOptions = {
  baseEndpoint: "/",
  playgroundEndpoint: "/playground",
  forwardUnmatchedRequestsToOrigin: false,
  debug: false,

  // cors: {
  //   allowCredentials: 'true',
  //   allowHeaders: 'Content-type',
  //   allowOrigin: '*',
  //   allowMethods: 'GET, POST, PUT',
  // },
  cors: true,

  kvCache: true,
};

const handleRequest = async (request) => {
  const url = new URL(request.url);

  try {
    if (url.pathname === graphQLOptions.baseEndpoint) {
      const response =
        request.method === "OPTIONS"
          ? new Response("", { status: 204 })
          : await apollo(request, graphQLOptions);

      if (graphQLOptions.cors) {
        setCors(response, graphQLOptions.cors);
      }

      return response;
    } else if (
      graphQLOptions.playgroundEndpoint &&
      url.pathname === graphQLOptions.playgroundEndpoint
    ) {
      return playground(request, graphQLOptions);
    } else if (graphQLOptions.forwardUnmatchedRequestsToOrigin) {
      return fetch(request);
    } else {
      return new Response("Not found", { status: 404 });
    }
  } catch (err) {
    return new Response(graphQLOptions.debug ? err : "Something went wrong", {
      status: 500,
    });
  }
};

addEventListener("fetch", (event) => {
  event.respondWith(handleRequest(event.request));
});