Function dispatchFilesystem

bin/gstack-brain-context-load.ts:272–314

(q: GbrainManifestQuery, args: CliArgs)

}

function dispatchFilesystem(q: GbrainManifestQuery, args: CliArgs): QueryResult {
  const t0 = Date.now();
  if (!q.glob) {
    return { query: q, ok: false, rendered: "", bytes: 0, duration_ms: Date.now() - t0, reason: "filesystem kind missing glob" };
  }
  const { resolved: glob, unresolved } = substituteTemplateVars(q.glob, args);
  if (unresolved.length > 0) {
    return {
      query: q,
      ok: false,
      rendered: "",
      bytes: 0,
      duration_ms: Date.now() - t0,
      reason: `template vars unresolved: ${unresolved.join(",")}`,
    };
  }
  // Expand ~ to home dir
  const expanded = glob.replace(/^~/, HOME);

  // Simple glob: match against filesystem
  const matches = simpleGlob(expanded);
  if (matches.length === 0) {
    return { query: q, ok: false, rendered: "", bytes: 0, duration_ms: Date.now() - t0, reason: "no matches" };
  }

  // Sort + limit
  let sorted = matches;
  if (q.sort === "mtime_desc") {
    sorted = matches
      .map((p) => ({ p, mtime: tryStatMtime(p) }))
      .sort((a, b) => b.mtime - a.mtime)
      .map((x) => x.p);
  }
  const limit = q.limit ?? args.limit;
  const limited = q.tail !== undefined ? sorted.slice(-q.tail) : sorted.slice(0, limit);

  const lines = limited.map((p) => {
    const mt = new Date(tryStatMtime(p)).toISOString().slice(0, 10);
    return `- ${mt} — ${basename(p)}`;
  });
  const rendered = wrapDatamarked(q.render_as, capBody(lines.join("\n")));
  return { query: q, ok: true, rendered, bytes: rendered.length, duration_ms: Date.now() - t0 };
}

// ── Helpers ────────────────────────────────────────────────────────────────