import { NextRequest, NextResponse } from "next/server";

export async function GET(request: NextRequest) {
  const ipAddress =
    request.headers.get("x-forwarded-for")?.split(",")[0] || "unknown";

  const ipv4Regex = /^::ffff:(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$/;
  const match = ipAddress.match(ipv4Regex);

  const normalizedIp = match ? match[1] : ipAddress;

  return NextResponse.json({
    originalIp: ipAddress,
    normalizedIp: normalizedIp,
  });
}