//! A world HTTP client that forwards each response chunk without curl's body buffer.
use std::io::Write;
use wasi::http::{outgoing_handler, types::*};
fn main() {
    let request = OutgoingRequest::new(Fields::new());
    request.set_method(&Method::Get).unwrap();
    request.set_scheme(Some(&Scheme::Http)).unwrap();
    request.set_authority(Some("host.sausage")).unwrap();
    request
        .set_path_with_query(Some(&std::env::args().nth(1).unwrap()))
        .unwrap();
    let outgoing = request.body().unwrap();
    let future = outgoing_handler::handle(request, None).unwrap();
    OutgoingBody::finish(outgoing, None).unwrap();
    future.subscribe().block();
    let response = future.get().unwrap().unwrap().unwrap();
    assert_eq!(response.status(), 200);
    let incoming = response.consume().unwrap();
    let stream = incoming.stream().unwrap();
    let mut output = std::io::stdout().lock();
    loop {
        stream.subscribe().block();
        match stream.read(65536) {
            Ok(bytes) => {
                output.write_all(&bytes).unwrap();
                output.flush().unwrap();
            }
            Err(wasi::io::streams::StreamError::Closed) => break,
            Err(error) => panic!("stream: {error:?}"),
        }
    }
    drop(stream);
    let trailers = IncomingBody::finish(incoming);
    trailers.subscribe().block();
    trailers.get().unwrap().unwrap().unwrap();
}