import { requireAuth } from '@/lib/auth';
import { tickNow } from '@/lib/sim/engine';
import { getStateSnapshot } from '@/lib/game/state';

// v1.1.0 (ISS-107): guarded — 401 without a live X-Flight-Session. The snapshot shape is
// unchanged; per-player snapshots are a later step.
export async function GET(req: Request) {
  const auth = await requireAuth(req);
  if (!auth.ok) return auth.response;
  try {
    // Tick-on-read (v0.7.0): advance the sim clock before snapshotting so every
    // read reflects current game time (expiry/finalize/spawn run inside the tick).
    await tickNow();
    return Response.json(await getStateSnapshot());
  } catch (err) {
    console.error('failed to load game state', err);
    return Response.json({ error: 'failed to load game state' }, { status: 500 });
  }
}