use wasi_worker::*;

struct MyWorker {}
impl Handler for MyWorker {
  fn on_message(&self, msg: &[u8]) -> std::io::Result<()> {
    // Process incoming message
    println!("My Worker got message: {:?}", msg);
    Ok(())
  }
}

fn main() {
  let opt = ServiceOptions::default();
  /* 
   * In WASI setup output will go to /output.bin
   * When compiled with other than wasi target default output is ./output.bin
   * To override:
   * ```
   * let opt = ServiceOptions { 
   *   output: FileOptions::File("./testdata/output.bin".to_string()) 
   * };
   * ```
   */
  ServiceWorker::initialize(opt)
    .expect("ServiceWorker::initialize");

  // Attach Agent to ServiceWorker as message handler singleton
  ServiceWorker::set_message_handler(Box::new(MyWorker {}));

  /* Worker code goes here
   *
   * To send message to main web application:
   * ```
   *   ServiceWorker::post_message(b"message")
   *    .expect("ServiceWorker::post_message");
   * ```
   */
}