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|
use crate::types::*;
use std::{
sync::Arc,
net::SocketAddr,
};
use tokio::sync::RwLock;
use tokio::sync::mpsc as tokio_mpsc;
use futures::{SinkExt, StreamExt, TryStreamExt, stream::SplitStream};
use warp::ws::{ WebSocket, Message };
use crate::livepos;
use ammonia;
const MAX_IN: usize = 2048;
pub async fn lobby(socket: WebSocket, addr: SocketAddr, rinfo: (RoomId,Arc<RwLock<Room>>)) {
let (room_id, room) = rinfo;
let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
// server <-> client comms
let (mut outgoing, incoming) = socket.split();
println!("{room_id} I: Incoming TCP connection from: {}", addr);
let full = {
let rl = room.read().await;
let pcap = rl.conf.player_cap;
let pl = rl.players.read().await;
pl.len() >= pcap
};
if full { return }
let drive_game = handle_room((incoming,tx), addr, (room_id.clone(),room.clone()));
let send_to_client = {
let room_id = room_id.clone();
async move {
while let Some(m) = rx.recv().await {
if let Err(e) = outgoing.send(m).await {
println!("{room_id} E: something went bad lol: {e}");
}
}
}
};
tokio::select! {
_ = drive_game => (),
_ = send_to_client => { println!("{room_id} E: anomalous close for {addr}"); }
};
let room_lock = room.read().await;
let mut players = room_lock.players.write().await;
if let Some(disconn_p) = players.remove(&addr) {
if let Err(e) = room_lock.pos_stream.send(livepos::Req { id: disconn_p.uid, data: livepos::ReqData::Quit }) {
println!("{room_id} E: couldn't send removal request for {disconn_p} from the live position system: {e}");
}
for p in players.values() {
if let Err(e) = p.conn.tx.send(Message::text(format!("logoff {}", disconn_p.uid))) {
println!("{room_id} E: couldn't deliver logoff info to {}: {}", p, e);
}
}
println!("{room_id} I: {disconn_p} disconnected");
} else {
println!("{room_id} I: {addr} disconnected");
}
}
type RoomStreams = (SplitStream<WebSocket>,tokio_mpsc::UnboundedSender<Message>);
pub async fn handle_room(streams: RoomStreams, addr: SocketAddr, rinfo: (RoomId, Arc<RwLock<Room>>)) {
let (mut incoming, tx) = streams;
let (room_id, room) = rinfo;
let (players, cmd_tx, pos_tx, room_conf) = {
let room = room.read().await;
(room.players.clone(), room.cmd_stream.clone(), room.pos_stream.clone(), room.conf.clone())
};
while let Ok(cmd) = incoming.try_next().await {
if let Some(cmd) = cmd {
// if it ain't text we can't handle it
let cmd = match cmd.to_str() {
Ok(cmd) => { if cmd.len() > MAX_IN {
println!("{room_id} E: string too big: {cmd}");
return
} else { cmd.to_owned() } },
Err(_) => return
};
let mut fields = cmd.split(" ");
let parse_pos = |mut fields: std::str::Split<&str>| -> Option<(usize, usize)> {
let x = fields.next().and_then(|xstr| xstr.parse::<usize>().ok());
let y = fields.next().and_then(|ystr| ystr.parse::<usize>().ok());
x.zip(y)
};
if let Some(cmd_name) = fields.next() {
use crate::minesweeper::{Move,MoveType};
let mut players_lock = players.write().await;
match players_lock.get_mut(&addr) {
Some(me) => match cmd_name {
"pos" => {
match parse_pos(fields) {
Some(pos) => {
if let Err(e) = pos_tx.send(livepos::Req { id: me.uid, data: livepos::ReqData::Pos(pos) }) {
println!("{room_id} E: couldn't process {me}'s position update: {e}");
};
// me.position = pos.clone();
// let sanitized_name = me.name.replace(" ", " ").to_string();
// let msg = format!("pos {} {sanitized_name} {} {} {}", me.uid, me.clr, pos.0, pos.1);
// for peer_tx in players_lock.iter().filter(|(s, _)| **s != addr).map(|(_,p)| &p.conn.tx) {
// let r = peer_tx.send(Message::text(&msg));
// if let Err(e) = r {
// println!("{room_id} E: error sending pos update: {e}");
// }
// }
},
None => {
// Too spammy
//println!("{room_id} E: bad position update from {me}");
},
}
},
"reveal" => {
match parse_pos(fields) {
Some(pos) => {
if let Err(e) = cmd_tx.send(MetaMove::Move(Move { t: MoveType::Reveal, pos }, addr)) {
println!("{room_id} E: couldn't process {me}'s reveal command: {e}");
};
},
None => {
println!("{room_id} E: bad reveal from {me}");
}
}
},
"flag" => {
match parse_pos(fields) {
Some(pos) => {
if let Err(e) = cmd_tx.send(MetaMove::Move(Move { t: MoveType::ToggleFlag, pos }, addr)) {
println!("{room_id} E: couldn't process {me}'s flag command: {e}");
};
},
None => {
println!("{room_id} E: bad flag from {me}");
}
}
},
"reset" => {
if let Err(e) = cmd_tx.send(MetaMove::Reset) {
println!("{room_id} E: couldn't request game dump in behalf of {me}: {e}");
}
},
e => println!("{room_id} E: unknown command {e:?} from {me}: \"{cmd}\""),
},
None => {
if cmd_name == "register" {
let mut all_fields = fields.collect::<Vec<&str>>();
let clr = all_fields.pop().expect("register without color").chars().filter(|c| c.is_digit(16) || *c == '#').collect::<String>();
let name = {
let def = "anon".to_string();
if all_fields.is_empty() { def }
else {
let n = ammonia::clean(&all_fields.join(" "));
if n.is_empty() { def } else { n }
}
};
println!("{room_id} I: registered \"{name}@{addr}\"");
drop(players_lock);
let uid = {
// new scope cuz paranoid bout deadlocks
let conn = Conn { addr, tx: tx.clone() };
room.write().await.players.insert_conn(conn, name.clone(), clr).await
};
let players_lock = players.read().await;
let me = players_lock.get(&addr).unwrap();
tx.send(Message::text(format!("regack {} {} {} {}",
room_conf.name.replace(" ", " "), name.replace(" ", " "), uid, room_conf.board_conf))
).expect("couldn't send register ack");
{
let msg = Message::text(format!("players {}",
jsonenc_players(players_lock.values())
.expect("couldn't JSONify players")));
for p in players_lock.values() {
if let Err(e) = p.conn.tx.send(msg.clone()) {
println!("{room_id} E: couldn't dump players for {me}: {e}");
}
}
}
if let Err(e) = pos_tx.send(livepos::Req { id: uid, data: livepos::ReqData::StateDump }) {
println!("{room_id} E: couldn't request position dump for {me}: {e}");
}
if let Err(e) = cmd_tx.send(MetaMove::Dump) {
println!("{room_id} E: couldn't request game dump for {me}: {e}");
}
}
}
}
}
} else {
println!("{room_id} E: reached end of stream for {addr}");
break;
}
}
}
fn jsonenc_players<'a, I: IntoIterator<Item=&'a Player>>(players: I) -> Result<String, serde_json::Error> {
let mut pairs = Vec::new();
for player in players {
pairs.push((player.uid, player.name.replace(" ", " "), player.clr.clone()));
}
serde_json::to_string(&pairs)
}
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