#[macro_use] extern crate lazy_static;
#[macro_use] extern crate rust_util;

use std::{env, io::Error};
use std::process;
use futures_util::StreamExt;
use futures_util::stream::SplitSink;
use tokio::net::{TcpListener, TcpStream};
use rust_util::XResult;
use tokio::sync::Mutex;
use std::collections::BTreeMap;
use tokio_tungstenite::WebSocketStream;

lazy_static!{
    static ref ALL_ROOMS: Mutex<BTreeMap<String, BTreeMap<String, SplitSink<WebSocketStream<TcpStream>, Message>>>> = Mutex::new(BTreeMap::new());
}

// create/enter room
// exit room
// destroy room
// list peers
// enter peer
// exit peer
// send message
// - broadcast
// - peer

// const MESSAGE_TYPE_CREATE: &str = "create";
// const MESSAGE_TYPE_MESSAGE: &str = "message";

struct Message {
    ty: String,
    room: Option<String>,
    data: Option<String>,
}

#[tokio::main]
async fn main() -> Result<(), Error> {
    let addr = env::args().nth(1).unwrap_or_else(|| "127.0.0.1:8080".to_string());

    let listener = match TcpListener::bind(&addr).await {
        Ok(socket) => socket,
        Err(e) => {
            failure!("Try listen on: {}, faield: {}", addr, e);
            process::exit(-1);
        },
    };
    success!("Listening on: {}", addr);

    while let Ok((stream, _)) = listener.accept().await {
        tokio::spawn(accept_connection(stream));
    }

    Ok(())
}

async fn accept_connection(stream: TcpStream) {
    if let Err(e) = inner_accept_connection(stream).await {
        failure!("Error occurred in accepting connection: {}", e);
    }
}

async fn inner_accept_connection(stream: TcpStream) -> XResult<()> {
    let addr = stream.peer_addr()?;
    information!("Peer address: {}", addr);
    let ws_stream = tokio_tungstenite::accept_async(stream).await?;
    information!("New WebSocket connection: {}", addr);

    let (write, mut read) = ws_stream.split();
    //read.forward(write).await?;
    let a = read.next().await;


    Ok(())
}