use futures::{FutureExt, StreamExt};

use serde::{Serialize};
use ws_stream_wasm::WsMessage;

#[macro_export]
macro_rules! send {
    ($writer:expr,$pkt:expr) => {
        $writer.send($crate::macros::__generic_packet_to_message($pkt).unwrap())
    };
}

#[macro_export]
macro_rules! recv {
    ($reader:expr) => {
        {
            if let Some(future_result) = $reader.next().now_or_never() {
                if let Some(msg) = future_result {
                    if let WsMessage::Binary(msg) = msg {
                        match rmp_serde::from_slice(&msg) {
                            Ok(d) => Ok(Some(d)),
                            Err(e) => {
                                log::error!("error deserializing message: {}", e);
                                Ok(None)
                            }
                        }
                    } else {
                        Ok(None)
                    }
                } else {
                    log::error!("pipe closed");
                    Err("Pipe closed")
                }
            } else {
                Ok(None)
            }
        }
    }
}

#[macro_export]
macro_rules! recv_now {
    ($reader:expr) => {
        {
            if let Some(msg) = $reader.next().await {
                if let WsMessage::Binary(msg) = msg {
                    match rmp_serde::from_slice(&msg) {
                        Ok(d) => Ok(Some(d)),
                        Err(e) => {
                            log::error!("error deserializing message: {}", e);
                            Ok(None)
                        }
                    }
                } else {
                    Ok(None)
                }
            } else {
                log::error!("pipe closed");
                Err("Pipe closed")
            }
        }
    };
}

pub fn __generic_packet_to_message<T: Serialize>(pkt: &T) -> Result<WsMessage, rmp_serde::encode::Error> {
    rmp_serde::to_vec(&pkt).map(WsMessage::from)
}