import { createServer, IncomingMessage, ServerResponse } from 'http';
import 'dotenv/config';

const config = {
  port: process.env.PORT ?? 80,
  uri: process.env.URI ?? 'https://youtu.be/dQw4w9WgXcQ'
};

const httpServer = createServer();

async function handleHttpRequests(
  req: IncomingMessage,
  res: ServerResponse
): Promise<ServerResponse> {
  res.writeHead(302, { Location: config.uri });
  return res.end();
}

async function main() {
  try {
    httpServer.listen(config.port);
    httpServer.on('request', handleHttpRequests);
    console.log(`Listen on ${config.port}.`);
  } catch(err: unknown) {
    console.log(`Error, ${err}`);
  }
}

main();