import type { ResponsePayload } from "../@types/ResponsePayload.js";

export const sendResponse = (
  payload: ResponsePayload,
  cacheHit: "HIT" | "MISS",
  extraHeaders: Record<string, string> = {},
) =>
  new Response(payload.buffer, {
    headers: {
      Vary: "Accept",
      "Content-Type": payload.contentType ?? "",
      "Cache-Control": `public, max-age=${Math.floor(payload.maxAge / 1000)}, must-revalidate`,
      "CDN-Cache-Control": `max-age=${Math.floor(payload.maxAge / 1000)}`,
      "Content-Length": Buffer.byteLength(payload.buffer).toString(),
      "Content-Security-Policy":
        "script-src 'none'; frame-src 'none'; sandbox;",
      "Strict-Transport-Security":
        "max-age=31536000; includeSubDomains; preload",
      ETag: payload.etag,
      "X-SvelteAIO-Cache": cacheHit,
      ...extraHeaders,
    },
  });