app/routes/procedure.version[.md].ts

Functions

Imports

It imports app/db/procedure-versions.ts, app/kb/procedures/lineage.mjs, app/kb/procedures/lineage.server.ts, app/kb/procedures/route.ts, app/lib/context.ts, app/lib/markdown-twin.ts, app/lib/seo.ts. No module of this repo imports it.

Source

1import { getFrozenVersion } from "~/db/procedure-versions";
2import { getEnv } from "~/lib/context";
3import { canonicalLink } from "~/lib/markdown-twin";
4import { withLineage } from "~/kb/procedures/lineage.mjs";
5import { lineageFor } from "~/kb/procedures/lineage.server";
6import { PROCEDURES_CACHE_TAG } from "~/kb/procedures/route";
7import { SHARED_CACHE_CONTROL, SITE_ORIGIN } from "~/lib/seo";
8
9import type { Route } from "./+types/procedure.version[.md]";
10
11/**
12 * The markdown twin of a frozen version, at `<page>/v/<version>.md`: exactly the twin the version had when it was
13 * published, so an agent reads the same words a person does on the version's page. The canonical is the plain twin.
14 * A variant's "Based on" line is read out as its parent's title and address, as the version's page shows it (P3).
15 */
16export async function loader({ request, context }: Route.LoaderArgs) {
17  const env = getEnv(context);
18  const found = /^(.*)\/v\/([^/]+?)\.md$/.exec(new URL(request.url).pathname);
19  const frozen = found ? await getFrozenVersion(env, found[1] ?? "", decodeURIComponent(found[2] ?? "")) : null;
20  if (!frozen) {
21    return new Response("Not found\n", { status: 404, headers: { "content-type": "text/plain; charset=utf-8" } });
22  }
23  return new Response(withLineage(frozen.markdown, frozen.record, await lineageFor(env, frozen.record), SITE_ORIGIN), {
24    headers: {
25      "content-type": "text/markdown; charset=utf-8",
26      "cache-control": SHARED_CACHE_CONTROL,
27      "cache-tag": PROCEDURES_CACHE_TAG,
28      "x-robots-tag": "noindex",
29      link: canonicalLink(frozen.path),
30    },
31  });
32}