ChatGPT-Next-Web/app/api/cors/route.ts

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

async function handle(req: NextRequest) {
  if (req.method === "OPTIONS") {
    return NextResponse.json({ body: "OK" }, { status: 200 });
  }

  const targetUrl = req.nextUrl.searchParams.get("url");

  if (!targetUrl) {
    return NextResponse.json({ body: "Bad Url" }, { status: 500 });
  }

  const method = req.headers.get("method") ?? undefined;
  const fetchOptions: RequestInit = {
    headers: {
      authorization: req.headers.get("authorization") ?? "",
    },
    method,
    // @ts-ignore
    duplex: "half",
  };

  const fetchResult = await fetch(targetUrl, fetchOptions);

  console.log("[Any Proxy]", targetUrl, {
    status: fetchResult.status,
    statusText: fetchResult.statusText,
  });

  return fetchResult;
}

export const GET = handle;
export const OPTIONS = handle;

export const runtime = "edge";