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use std::error::Error;
use tokio::net::{TcpListener, TcpStream};
use tokio::io::AsyncWriteExt;
use crate::server::auto::cmd::property::{
create_property_update_command,
create_property_request_command
};
use tokio_util::codec::{BytesCodec, Decoder};
use tokio_stream::StreamExt;
use crate::server::cmd::text::{create_text_command_with_action, create_text_command};
use std::str::from_utf8;
use crate::server::cmd::buddy_list::create_buddy_list_notify_command;
use crate::server::auto::cmd::room::create_room_id_redirect_command;
use std::sync::Arc;
use tokio::sync::Mutex;
use crate::server::shared::Shared;
use crate::server::peer::Peer;
use std::net::SocketAddr;
use crate::server::auto::cmd::session::parse_session_initialization_command;
use crate::server::parser::get_commands_from_buffer;
use crate::server::cmd::property::parse_property_set_command;
use crate::config::get_config;
use crate::server::cmd::action::create_action_command;
pub struct AutoServer;
impl AutoServer {
pub async fn listen(addr: &str) -> Result<(), Box<dyn Error>> {
let listener = TcpListener::bind(addr).await?;
debug!("AutoServer now listening on {}", listener.local_addr().unwrap());
let state = Arc::new(Mutex::new(Shared::new()));
let mut counter = 0;
loop {
let (stream, address) = listener.accept().await?;
counter += 1;
let state = Arc::clone(&state);
tokio::spawn(async move {
if let Err(e) = AutoServer::handle(
state,
stream,
address,
counter
).await {
error!("an error occurred: {}", e);
}
});
}
}
pub async fn handle(
state: Arc<Mutex<Shared>>,
stream: TcpStream,
address: SocketAddr,
count: usize,
) -> Result<(), Box<dyn Error>> {
let bytes = BytesCodec::new().framed(stream);
let mut peer = Peer::new(state.clone(), bytes, count.to_string()).await?;
debug!("registered peer with address '{}' as '{}'", address, count);
let mut room_ids: Vec<String> = Vec::new();
let mut username: String = String::new();
loop {
tokio::select! {
Some(msg) = peer.rx.recv() => {
// debug!("received bytes from peer: {:?}", &msg);
peer.bytes.get_mut().write_all(&msg).await?;
}
result = peer.bytes.next() => match result {
Some(Ok(msg)) => {
// let msg: BytesMut = msg;
for msg in get_commands_from_buffer(msg) {
match msg.get(2).unwrap() {
10 => { // PROPREQ
debug!("received property request command from client");
peer.bytes.get_mut()
.write_all(&create_property_update_command()).await?;
debug!("sent property update command to client");
}
6 => { // SESSINIT
username = parse_session_initialization_command(msg.clone()).username;
debug!(
"received session initialization command from client: {}",
username
);
peer.bytes.get_mut()
.write_all(&create_property_request_command()).await?;
debug!("sent session initialization command to client");
}
15 => { // PROPSET
let avatar = parse_property_set_command(msg.clone());
debug!("received property set command from client: {}", avatar);
peer.bytes.get_mut()
.write_all(&create_text_command(
"WORLDSMASTER", &get_config()?.worldsmaster_greeting
)).await?;
peer.bytes.get_mut()
.write_all(&create_action_command()).await?;
debug!("sent worldsmaster greeting to client");
}
29 => { // BUDDYLISTUPDATE
let received_buddy = from_utf8(
msg.get(4..msg.get(0).unwrap().to_owned() as usize - 1).unwrap()
).unwrap();
debug!(
"received buddy list update command from client: {}",
received_buddy
);
let buddies = vec![
"dosfox",
"Fallen_Angel",
"Internet_Man",
"Nexialist",
"SirGemini",
"SirGrandpa",
"Wirlaburla",
];
if buddies.contains(&received_buddy) {
peer.bytes.get_mut()
.write_all(&create_buddy_list_notify_command(received_buddy))
.await?;
debug!("sent buddy list notify command to client: {}", received_buddy);
}
}
20 => { // ROOMIDRQ
let room_name = from_utf8(
msg.get(4..msg.get(0).unwrap().to_owned() as usize).unwrap()
).unwrap();
debug!("received room id request command from client: {}", room_name);
let room_id;
if !room_ids.contains(&room_name.to_string()) {
room_ids.push(room_name.to_string());
room_id = room_ids.iter()
.position(|i| i == &room_name.to_string())
.unwrap();
trace!("inserted room '{}' as '{}'", room_name, room_id);
} else {
let position = room_ids.iter()
.position(|i| i == &room_name.to_string())
.unwrap();
trace!("found room '{}' as '{}'", room_name, position);
room_id = position;
}
trace!("room name: {}, room id: {}", room_name, room_id);
trace!("{:?}", room_ids);
peer.bytes.get_mut()
.write_all(&create_room_id_redirect_command(room_name, room_id))
.await?;
debug!("sent redirect id command to client: {} == {}", room_name, room_id);
}
14 => {
let text = from_utf8(
msg.get(6..msg.get(0).unwrap().to_owned() as usize).unwrap()
).unwrap();
debug!("received text command from client: {}", text);
let mut state = state.lock().await;
state.broadcast(&create_text_command(&username, text)).await;
debug!("broadcasted text command from client");
}
7 => { // SESSEXIT
debug!("received session exit command from client")
}
_ => (),
}
}
}
Some(Err(e)) => {
error!("error while processing messages: {}", e); break;
}
None => break,
}
}
}
{ // De-register client
state.lock().await.peers.remove(&count.to_string());
debug!("removed peer: {}", count)
}
Ok(())
}
}
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