import { NextRequest, NextResponse } from "next/server";
import { revalidatePath } from "next/cache";
import { rescanVideoIndex } from "@/lib/video";
import { rawDb } from "@/lib/db/client";
import { assertLocalRequest } from "@/lib/api/localOnly";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

export async function POST(req: NextRequest) {
  const blocked = assertLocalRequest(req);
  if (blocked) return blocked;

  const t0 = Date.now();
  const force = req.nextUrl.searchParams.get("force") === "1";
  const idx = await rescanVideoIndex({ force });
  // Bust the RSC cache for detail pages so file-size / duration
  // refresh without a navigation. Skip the layout invalidation —
  // it triggers a full-app re-render and isn't needed for the
  // metadata badges we actually changed.
  revalidatePath("/id/[code]", "page");
  // codes count comes from the DB now, not an in-memory Map. Cheap.
  const distinctCodesRow = rawDb
    .prepare(`SELECT COUNT(DISTINCT upper(code)) AS n FROM video_metadata`)
    .get() as { n: number };
  return NextResponse.json({
    ok: true,
    count: idx.count,
    codes: distinctCodesRow.n,
    rootsScanned: idx.rootsScanned,
    elapsedMs: Date.now() - t0,
  });
}