// ONE SEARCH PIPELINE — the caps, named and passed.
//
// These were private constants of `mcp/src/search.ts`. They are not "the"
// limits of searching an archive; they are the limits ONE CALLER chose, and
// the viewer chose differently. Naming them is what lets both callers share
// one scanner: the MCP server passes `MCP_POLICY`, a human scrolling a page
// passes `VIEWER_POLICY`, and neither re-derives a number the other owns.
//
// The bench's structural read/byte counters are unchanged by construction
// BECAUSE these are passed rather than re-derived — `MCP_POLICY` holds exactly
// the four values the MCP scanner used before the move.

export type SearchPolicy = {
  // A hard ceiling on shard pages fetched per query, so a rare term over a
  // large (or hub-wide) corpus cannot run away. Reaching it sets `truncated`.
  // Was `MAX_PAGES` (search.ts:259).
  maxPages: number;
  // A ceiling on matched videos collected before counting stops, so `total`
  // stays bounded and stable for a very common term. Reaching it also sets
  // `truncated` (the true total is higher than reported). Was
  // `HARD_VIDEO_CAP` (search.ts:263).
  hardVideoCap: number;
  // Cap on merged windowed excerpt lines emitted per video, so a video with
  // hundreds of matches cannot blow a batch's token budget. Was
  // `WINDOW_LINE_CAP` (search.ts:268).
  windowLineCap: number;
  // Snippet truncation width. Was the `max = 240` default of `truncate`
  // (search.ts:456).
  snippetChars: number;
};

// What the MCP server passes — the four values verbatim.
export const MCP_POLICY: SearchPolicy = {
  maxPages: 400,
  hardVideoCap: 2000,
  windowLineCap: 200,
  snippetChars: 240,
};

// What the viewer passes: UNCAPPED. A human scrolling a page is not spending
// an agent's token budget, and the browser pipeline has always had its own
// per-run hit limit (`DEFAULT_MAX_HITS`, raised by "show more") rather than a
// fixed page or video ceiling. Infinity is load-bearing here, not decorative:
// `truncate(t, Infinity)` is the identity, and `pagesScanned >= Infinity` is
// never true.
export const VIEWER_POLICY: SearchPolicy = {
  maxPages: Number.POSITIVE_INFINITY,
  hardVideoCap: Number.POSITIVE_INFINITY,
  windowLineCap: Number.POSITIVE_INFINITY,
  snippetChars: Number.POSITIVE_INFINITY,
};