import { loadPackage, performAction } from '@/lib/game/actions';

// POST /api/packages/:id/load (v0.12.0) — body { planeId: string }. Loads an OPEN
// package onto a GROUNDED plane at the package's origin with enough payload room
// for its weight (v0.27.0). 400 missing/non-string planeId or unknown fields; 404
// unknown package/plane id; 409 wrong package status, plane flying, plane not at
// the origin, no payload room. On success returns the full state snapshot
// (package now "loaded" on that plane).

export async function POST(req: Request, ctx: { params: Promise<{ id: string }> }) {
  const { id } = await ctx.params;

  let body: unknown;
  try {
    const text = await req.text();
    body = text ? JSON.parse(text) : {};
  } catch {
    return Response.json({ error: 'invalid JSON body' }, { status: 400 });
  }
  if (typeof body !== 'object' || body === null || Array.isArray(body)) {
    return Response.json({ error: 'body must be a JSON object' }, { status: 400 });
  }
  const input = body as Record<string, unknown>;
  for (const key of Object.keys(input)) {
    if (key !== 'planeId') {
      return Response.json({ error: `unknown field "${key}"` }, { status: 400 });
    }
  }
  if (typeof input.planeId !== 'string' || input.planeId.length === 0) {
    return Response.json({ error: 'planeId must be a non-empty string' }, { status: 400 });
  }

  const planeId = input.planeId;
  return performAction((inst) => loadPackage(inst, id, planeId));
}