import { withUser, json } from "@/lib/api";
import { searchAll, SEARCH_GROUPS, type SearchGroup } from "@/lib/search/service";
import { LIMITS } from "@/lib/rate-limit";

export const dynamic = "force-dynamic";

/**
 * GET /api/search?q=<query>&limit=12&cursor=<opaque>&groups=conversations,messages
 *
 * Query language (see src/lib/search/query.ts): free text, "quoted phrases", model:, provider:, project:, folder:,
 * after:, before:, role:user|assistant, is:pinned|archived|shared. Response: SearchResponse (grouped hits,
 * `query.terms` for client-side highlighting, `nextCursor` for conversations/messages pagination).
 */
export const GET = withUser(
  async ({ req, user }) => {
    const sp = new URL(req.url).searchParams;
    const q = (sp.get("q") ?? "").trim().slice(0, 300);
    const limitRaw = Number(sp.get("limit") ?? 12);
    const limit = Number.isFinite(limitRaw) ? limitRaw : 12;
    const cursor = sp.get("cursor");
    const groups = (sp.get("groups") ?? "")
      .split(",")
      .map((g) => g.trim())
      .filter((g): g is SearchGroup => (SEARCH_GROUPS as readonly string[]).includes(g));
    const res = await searchAll(user.id, q, { limit, cursor, groups });
    return json(res);
  },
  { limit: { ...LIMITS.search, key: "search" } },
);