import { cache } from "react";
import { readChannelConfig } from "yt-dlp-transcript-common/controller/channels";
import { getPaths } from "yt-dlp-transcript-common/lib/paths";

// The layout and the page both need the channel's config — the layout for the
// title and whether to offer the Videos tab, the page for everything else. React
// `cache()` dedupes them into ONE read per request. Without it, every channel
// route pays two reads of the same file for the same render.
//
// Request-scoped, not a process cache: the memo lives for the duration of one
// render pass, so a config edited by the form on the previous request is read
// fresh on the next one.
export const readChannelConfigCached = cache(async (slug: string) =>
  readChannelConfig(getPaths(), slug),
);