import { analyseMedia, probeMedia } from "@/lib/media";
import { resolveInRoots } from "@/lib/paths";

export const dynamic = "force-dynamic";

// One track, opened: what it is, and what it sounds like.
//
// The analysis is the expensive half (a full decode) and is cached by mtime, so
// this is slow exactly once per file and instant afterwards. Both halves come
// back together because the bench cannot draw a lane without either.
export async function GET(request: Request) {
  const url = new URL(request.url);
  const abs = resolveInRoots(url.searchParams.get("path"));
  if (!abs) return Response.json({ error: "path is not inside a known root" }, { status: 400 });
  try {
    const info = await probeMedia(abs);
    if (!info.hasAudio) {
      return Response.json({ info, analysis: null, error: "no audio track" }, {
        headers: { "cache-control": "no-store" },
      });
    }
    const analysis = await analyseMedia(abs);
    return Response.json({ info, analysis }, { headers: { "cache-control": "no-store" } });
  } catch (err) {
    return Response.json({ error: String((err as Error)?.message ?? err) }, { status: 500 });
  }
}