import { NextRequest, NextResponse } from "next/server";
import { engineFetch } from "@/lib/engine";

// GET /api/screen?q=Name — OpenSanctions screening (sanctions/PEP). VERIFY
// commercial terms before production volume. Defers to engine when running.
export async function GET(req: NextRequest) {
  const q = req.nextUrl.searchParams.get("q") ?? "";
  if (!q) return NextResponse.json({ matches: [] });

  const eng = await engineFetch(`/screen?q=${encodeURIComponent(q)}`);
  if (eng && eng.ok) return NextResponse.json(await eng.json());

  try {
    const r = await fetch(`https://api.opensanctions.org/search/default?q=${encodeURIComponent(q)}&limit=5`, {
      headers: { "User-Agent": "0pt/0.1 (+https://0pt.app; SIAX)" },
      cache: "no-store",
    });
    if (!r.ok) return NextResponse.json({ matches: [], source: "opensanctions" });
    const data = (await r.json()) as { results?: { caption?: string; score?: number; schema?: string }[] };
    return NextResponse.json({
      source: "opensanctions",
      matches: (data.results ?? []).map((x) => ({ name: x.caption ?? null, score: x.score ?? null, schema: x.schema ?? null })),
    });
  } catch {
    return NextResponse.json({ matches: [], source: "opensanctions" });
  }
}