// Docker-only entrypoint.
// The API's PocketBase client targets http://localhost:8090 (fixed in a
// platform-managed file). In docker-compose, PocketBase runs in its own
// container, so forward localhost:8090 -> the pocketbase service before
// starting the API. Local development (npm run dev) does not use this file.

import net from 'node:net';
import { spawn } from 'node:child_process';

const UPSTREAM_HOST = process.env.PB_UPSTREAM_HOST || 'pocketbase';
const UPSTREAM_PORT = 8090;

function forward(socket) {
  const upstream = net.connect(UPSTREAM_PORT, UPSTREAM_HOST);
  socket.pipe(upstream).pipe(socket);
  socket.on('error', () => socket.destroy());
  upstream.on('error', () => socket.destroy());
}

function bind(host) {
  const server = net.createServer(forward);
  server.on('error', () => {}); // e.g. IPv6 unavailable in the container
  server.listen(UPSTREAM_PORT, host);
}

bind('127.0.0.1');
bind('::1');

const child = spawn('node', ['src/main.js'], { stdio: 'inherit', env: process.env });
child.on('exit', (code) => process.exit(code ?? 0));