import { NextResponse } from "next/server";
import { getPushSubscription, removePushSubscription } from "@/lib/push-store";
import { isWebPushConfigured, sendTestNotification } from "@/lib/push-service";

export const runtime = "nodejs";

export async function POST(request: Request) {
  if (!isWebPushConfigured()) {
    return NextResponse.json({ error: "Web Push is not configured." }, { status: 503 });
  }

  const body = await request.json().catch(() => null) as { endpoint?: unknown } | null;
  if (typeof body?.endpoint !== "string" || !body.endpoint) {
    return NextResponse.json({ error: "Invalid push subscription endpoint." }, { status: 400 });
  }

  const subscription = getPushSubscription(body.endpoint);
  if (!subscription || !subscription.enabled) {
    return NextResponse.json({ error: "Push subscription was not found." }, { status: 404 });
  }

  try {
    await sendTestNotification(subscription);
    return NextResponse.json({ ok: true });
  } catch (error) {
    const statusCode = typeof error === "object" && error !== null && "statusCode" in error ? Number(error.statusCode) : null;
    if (statusCode === 404 || statusCode === 410) removePushSubscription(subscription.endpoint);
    return NextResponse.json({ error: "Unable to send test notification." }, { status: 502 });
  }
}