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/*
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Time service -- tell me what time you think it is.
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This is a global service that is run by hubs.
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*/
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import { createServiceClient, createServiceHandler } from "./typed";
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import { getClient } from "@cocalc/conat/client";
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interface TimeApi {
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  // time in ms since epoch, i.e., Date.now()
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  time: () => Promise<number>;
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}
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const SUBJECT = process.env.COCALC_TEST_MODE ? "time-test" : "time";
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interface User {
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  account_id?: string;
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  project_id?: string;
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}
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function timeSubject({ account_id, project_id }: User) {
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  if (account_id) {
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    return `${SUBJECT}.account-${account_id}.api`;
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  } else if (project_id) {
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    return `${SUBJECT}.project-${project_id}.api`;
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  } else {
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    return `${SUBJECT}.hub.api`;
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  }
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}
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export function timeClient(user?: User) {
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  if (user == null) {
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    user = getClient();
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  }
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  const subject = timeSubject(user);
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  return createServiceClient<TimeApi>({
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    service: "time",
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    subject,
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  });
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}
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export async function createTimeService() {
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  return await createServiceHandler<TimeApi>({
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    service: "time",
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    subject: `${SUBJECT}.*.api`,
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    description: "Time service -- tell me what time you think it is.",
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    impl: { time: async () => Date.now() },
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  });
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}
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