import { NextResponse } from "next/server";
import { requirePlatformRole } from "@/lib/session";
import { listInvoices, syncOverdueInvoices } from "@/lib/db";
import type { InvoiceStatus } from "@/types";

/**
 * GET /api/admin/billing/invoices
 *
 * List invoices for admin. Optional filters:
 *   ?status=open|paid|overdue|void|uncollectible
 *   ?orgId=...
 *   ?month=YYYY-MM
 *   ?limit=200
 *
 * Refreshes overdue status on each call (cheap UPDATE), so the
 * admin list always reflects the latest due-date math without
 * needing a cron.
 */
export async function GET(request: Request) {
  try {
    await requirePlatformRole();
  } catch {
    return NextResponse.json({ error: "Forbidden" }, { status: 403 });
  }

  await syncOverdueInvoices().catch((e) =>
    console.error("syncOverdueInvoices failed:", e)
  );

  const { searchParams } = new URL(request.url);
  const status = searchParams.get("status") as InvoiceStatus | null;
  const orgId = searchParams.get("orgId");
  const month = searchParams.get("month");
  const limitParam = searchParams.get("limit");
  const limit = limitParam ? Math.max(1, Math.min(1000, parseInt(limitParam, 10))) : 200;

  const invoices = await listInvoices({
    status: status ?? undefined,
    zitadelOrgId: orgId ?? undefined,
    periodMonth: month ?? undefined,
    limit,
  });
  return NextResponse.json(invoices);
}