import path from "node:path";

// ---------------------------------------------------------------------------
// The roots, and keeping them apart is the whole point of the rescue:
//
//   SONG_CODE     umtool/song -- the tooling and the small JSON state, in the repo
//   SONG_DATA     wav48/, media/, cand2/, asr/ -- 39 GB, re-derivable, not in the repo
//   SONG_REPORTS  the um-song deliverables -- quartering-*.mp4 and their .plan.json
//   SONG_SCRATCH  render scratch, ABOVE SONG_DATA
//   REPORTS_ROOT  the tree every PROJECT hangs off -- songs AND report videos
//   MEDIA_ROOT    where a project's out/ is linked to (UMTOOL_MEDIA_DIR); = REPORTS_ROOT when unset
//
// Everything the bench reads or writes must resolve inside one of these. Not
// because this is exposed -- it is a local tool on a loopback port -- but
// because it RENDERS to a path the client names, and a typo that escapes the
// tree would overwrite something that took an hour to make.
//
// The values themselves live in ./paths.mjs, in plain ESM, so `umtool` on the
// command line and this app can never disagree about which directory is which.
// ---------------------------------------------------------------------------
export {
  CACHE_DIR,
  CHANNELS_DIR,
  cacheFile,
  corpusNotesFile,
  INDEX_DIR,
  MEDIA_ROOT,
  MEDIA_ROOTS,
  MEDIA_TIERED,
  MIX_CACHE,
  READ_ROOTS,
  REPORTS_ROOT,
  SONG_DATA,
  SONG_REPORTS,
  SONG_SCRATCH,
  SITES_DIR,
  WRITE_ROOTS,
  inside,
  isCorpusNotesFile,
  labelFor,
  mediaMirror,
  resolveInRoots,
} from "./paths.mjs";

// Resolved from cwd rather than import.meta.url: Turbopack rewrites module URLs
// into .next/server/chunks, so a path derived from one points at the build
// output instead of the source tree. `next dev` and `next start` both run with
// cwd at the package root.
export const SONG_CODE = process.env.SONG_CODE_DIR
  ? path.resolve(process.env.SONG_CODE_DIR)
  : path.join(/* turbopackIgnore: true */ process.cwd(), "song");

export const stateFile = (name: string) => path.join(/* turbopackIgnore: true */ SONG_CODE, name);

// dataFile needs SONG_DATA at module scope, which the re-export above does not
// bind locally -- so it is imported again rather than duplicated.
import { SONG_DATA as DATA } from "./paths.mjs";
export const dataFile = (...parts: string[]) => path.join(DATA, ...parts);