import { cleanupOutdatedCaches, precacheAndRoute } from "workbox-precaching";
import { clientsClaim } from "workbox-core";
import { dispatchCall, isJSONRPCCall, type Call } from "./workerrpc";

function isServiceWorker(
  self: WorkerGlobalScope,
): self is ServiceWorkerGlobalScope {
  return !!(self as unknown as ServiceWorkerGlobalScope).registration;
}

if (isServiceWorker(self)) {
  cleanupOutdatedCaches();
  precacheAndRoute(self.__WB_MANIFEST, {
    cleanURLs: false,
  });

  // auto update
  self.skipWaiting();
  clientsClaim();
} else {
  throw new TypeError("This entry point must be run in a service worker");
}

export const Service = {
  ping() {},
};

self.addEventListener("message", (event: MessageEvent<unknown>) => {
  const payload = event.data;
  if (typeof payload !== "object") return;
  if (isJSONRPCCall(payload as Record<string, unknown>)) {
    dispatchCall(Service, event as MessageEvent<Call<unknown>>);
  }
});