Create server.js

server.js

@@ -0,0 +1,37 @@
+const express = require('express');
+const proxy = require('express-http-proxy');
+const app = express();
+const targetUrl = process.env.OPENAI_URL;
+const port = 7860;
+const baseUrl = getExternalUrl(process.env.SPACE_ID);
+
+app.use('/api', function(req, res, next) {
+  // Get openaiKey from the request headers
+  const openaiKey = req.headers['authorization'];
+  
+  // Proxy request to targetUrl with modified headers
+  proxy(targetUrl, {
+    proxyReqOptDecorator: (proxyReqOpts, srcReq) => {
+      // Modify the request headers if necessary
+      proxyReqOpts.headers['Authorization'] = openaiKey;
+      return proxyReqOpts;
+    }
+  })(req, res, next);
+});
+
+app.get("/", (req, res) => {
+  res.send(`This is your OpenAI Reverse Proxy URL: ${baseUrl}`);
+});
+
+function getExternalUrl(spaceId) {
+  try {
+    const [username, spacename] = spaceId.split("/");
+    return `https://${username}-${spacename.replace(/_/g, "-")}.hf.space/api/v1`;
+  } catch (e) {
+    return "";
+  }
+}
+
+app.listen(port, () => {
+  console.log(`Reverse proxy server running on ${baseUrl}`);
+});