/**
 * Maps page view facts onto the Umami /api/send contract.
 * A page view is an unnamed event: no `name`, no `data`.
 * The client identity (user agent, IP) travels as request headers, not in
 * the payload — see src/analytics/recordPageviewToUmami.ts.
 */

import type { PageviewFacts } from "./pageview-decision";

export type UmamiSendBody = {
  readonly type: "event";
  readonly payload: {
    readonly website: string;
    readonly hostname: string;
    readonly language: string;
    readonly referrer: string;
    readonly url: string;
  };
};

export function buildUmamiPageviewBody(
  facts: PageviewFacts,
  websiteId: string,
): UmamiSendBody {
  return {
    type: "event",
    payload: {
      website: websiteId,
      hostname: facts.hostname,
      language: facts.language,
      referrer: facts.referrer,
      url: facts.url,
    },
  };
}