use tokio::{
    io::{AsyncRead, AsyncWrite},
    net::TcpStream,
};
use tokio_rustls::client::TlsStream;

#[derive(Debug)]
pub enum WsStream {
    Plain(TcpStream),
    Tls(TlsStream<TcpStream>),
}

impl WsStream {
    pub fn set_nodelay(&mut self) -> std::io::Result<()> {
        match self {
            WsStream::Plain(s) => s.set_nodelay(true),
            WsStream::Tls(s) => s.get_mut().0.set_nodelay(true),
        }
    }
}

impl AsyncRead for WsStream {
    fn poll_read(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
        buf: &mut tokio::io::ReadBuf<'_>,
    ) -> std::task::Poll<std::io::Result<()>> {
        match self.get_mut() {
            WsStream::Plain(stream) => std::pin::Pin::new(stream).poll_read(cx, buf),
            WsStream::Tls(stream) => std::pin::Pin::new(stream).poll_read(cx, buf),
        }
    }
}

impl AsyncWrite for WsStream {
    fn poll_write(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
        buf: &[u8],
    ) -> std::task::Poll<Result<usize, std::io::Error>> {
        match self.get_mut() {
            WsStream::Plain(stream) => std::pin::Pin::new(stream).poll_write(cx, buf),
            WsStream::Tls(stream) => std::pin::Pin::new(stream).poll_write(cx, buf),
        }
    }

    fn poll_flush(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Result<(), std::io::Error>> {
        match self.get_mut() {
            WsStream::Plain(stream) => std::pin::Pin::new(stream).poll_flush(cx),
            WsStream::Tls(stream) => std::pin::Pin::new(stream).poll_flush(cx),
        }
    }

    fn poll_shutdown(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Result<(), std::io::Error>> {
        match self.get_mut() {
            WsStream::Plain(stream) => std::pin::Pin::new(stream).poll_shutdown(cx),
            WsStream::Tls(stream) => std::pin::Pin::new(stream).poll_shutdown(cx),
        }
    }
}