export function parseHostTarget(input: string) {
  try {
    const normalized = input.match(/^(https?|h2c):\/\//) ? input : `http://${input}`;
    const url = new URL(normalized);

    const protocol = url.protocol.replace(":", ""); // http | https | h2c
    const host = url.hostname;
    
    let defaultPort: number;
    switch (protocol) {
      case "https":
        defaultPort = 443;
        break;
      case "h2c":
        defaultPort = 80; 
        break;
      default: // http
        defaultPort = 80;
        break;
    }
    
    const port = url.port ? parseInt(url.port, 10) : defaultPort;

    return { protocol, host, port };
  } catch {
    return null;
  }
}