const express = require('express');
const proxy = require('express-http-proxy');

const app = express();

const targetUrl = 'https://api.openai.com';

const openai_key = process.env.OPENAI_KEY

app.use('/', proxy(targetUrl, {
  proxyReqOptDecorator: (proxyReqOpts, srcReq) => {
    // Modify the request headers if necessary
    proxyReqOpts.headers['Authorization'] = 'Bearer '+openai_key;
    return proxyReqOpts;
  },
}));

const baseUrl = getExternalUrl(process.env.SPACE_ID);

function getExternalUrl(spaceId) {
  try {
    const [username, spacename] = spaceId.split("/");
    return `https://${username}-${spacename.replace(/_/g, "-")}.hf.space/v1`;
  } catch (e) {
    return "";
  }
}

app.listen(port, (y) => {console.log(`Reverse proxy app running on ${baseUrl}`);
});