Middleware to route single page requests with additional api key and mask origin address on edge hosting(vercel, cloudflare pages)

[...route].ts

//currently not working with cloudflare pages due to a bug

import type { NextRequest } from 'next/server'

export default async function handler(req: NextRequest) {
  const { searchParams } = new URL(req.url)
  const route = searchParams.getAll('route').join('/')

  if (req.method === "GET"){
    console.log(process.env.REST_API_URL)
    return fetch(`${process.env.REST_API_URL}${route}`, {
      redirect: 'manual',    
    })
    .catch((error) => {
      return new Response(error, { status: 503 });
    });
  }

  if (req.method !== "GET"){
    try {
      const json = await req.json();
      return fetch(`${process.env.REST_API_URL}${route}`, {
        method: req.method,
        headers: {
          'Content-Type': 'application/json'
        },
        body: JSON.stringify(json),
        redirect: 'manual',    
      })
      .catch((error) => {
        return new Response(error, { status: 503 });
      });
    
    } catch (e) {
      console.log(e);
      return new Response(null, { status: 400, statusText: "Bad Request" });
    }
  }
}