added basis of accpting socket-driven movement commands

src/coordinator.rs

@@ -10,7 +10,8 @@ use log::{error, info};
 use tokio::runtime::Handle;
 use tokio_tungstenite::tungstenite::Message;
 
-use crate::{joystick_loop::joystick_loop, camera_socket, ui_code::GuiUpdate};
+use crate::socket_server;
+use crate::{camera_socket, joystick_loop::joystick_loop, ui_code::GuiUpdate};
 
 #[derive(Clone)]
 pub struct MoveEvent {
@@ -21,14 +22,15 @@ pub struct MoveEvent {
 pub enum ApplicationEvent {
     StartSocket(String),
     SocketMessage(Message),
-    MoveEvent(MoveEvent),
+    MoveEvent(MoveEvent, u32),
 }
 
 struct CoordState<'a> {
     pub to_socket: Option<Sender<Message>>,
 
-    pub sck_send_alive: Arc<AtomicBool>,
-    pub sck_recv_alive: Arc<AtomicBool>,
+    pub sck_alive_sender: Arc<AtomicBool>,
+    pub sck_alive_server: Arc<AtomicBool>,
+    pub sck_alive_recvr: Arc<AtomicBool>,
     pub joystick_loop_alive: Arc<AtomicBool>,
 
     pub mec: Pin<&'a mut Receiver<ApplicationEvent>>,
@@ -47,8 +49,9 @@ impl<'a> CoordState<'a> {
         CoordState {
             to_socket: None,
 
-            sck_send_alive: Arc::new(AtomicBool::new(false)),
-            sck_recv_alive: Arc::new(AtomicBool::new(false)),
+            sck_alive_sender: Arc::new(AtomicBool::new(false)),
+            sck_alive_recvr: Arc::new(AtomicBool::new(false)),
+            sck_alive_server: Arc::new(AtomicBool::new(false)), 
             joystick_loop_alive: Arc::new(AtomicBool::new(false)),
 
             mec,
@@ -59,7 +62,7 @@ impl<'a> CoordState<'a> {
     }
 
     pub async fn socket_send(&mut self, message: Message) {
-        if self.sck_send_alive.load(Ordering::SeqCst) {
+        if self.sck_alive_sender.load(Ordering::SeqCst) {
             if let Some(tx) = self.to_socket.take() {
                 if let Err(e) = tx.send(message).await {
                     error!("There was an error sending to the socket send channel: {e}");
@@ -71,8 +74,8 @@ impl<'a> CoordState<'a> {
     }
 
     pub async fn socket_start(&mut self, conn: String) {
-        if !(self.sck_recv_alive.load(Ordering::SeqCst)
-            && self.sck_send_alive.load(Ordering::SeqCst))
+        if !(self.sck_alive_recvr.load(Ordering::SeqCst)
+            && self.sck_alive_sender.load(Ordering::SeqCst))
         {
             info!("Starting socket");
             let (to_socket, socket_sender_rx) = async_channel::bounded::<Message>(10);
@@ -83,8 +86,8 @@ impl<'a> CoordState<'a> {
                 conn,
                 self.to_mec.clone(),
                 socket_sender_rx,
-                self.sck_send_alive.clone(),
-                self.sck_recv_alive.clone(),
+                self.sck_alive_sender.clone(),
+                self.sck_alive_recvr.clone(),
                 self.rt.clone(),
             )
             .await;
@@ -93,14 +96,22 @@ impl<'a> CoordState<'a> {
 
     pub async fn check_states(&mut self) {
         if !self.joystick_loop_alive.load(Ordering::SeqCst) {
+            info!("Restarting joystick loop");
             self.rt.spawn(joystick_loop(
                 self.to_mec.clone(),
                 self.joystick_loop_alive.clone(),
             ));
         }
 
-        if !self.sck_recv_alive.load(Ordering::SeqCst)
-            || !self.sck_send_alive.load(Ordering::SeqCst)
+        if !self.sck_alive_server.load(Ordering::SeqCst) {
+            info!("Restarting socket server");
+            self.sck_alive_server.store(true, Ordering::SeqCst);
+            self.rt.spawn(socket_server::start_socketserver(self.rt.clone(), self.to_mec.clone(), self.sck_alive_server.clone()));
+        }
+
+
+        if !self.sck_alive_recvr.load(Ordering::SeqCst)
+            || !self.sck_alive_sender.load(Ordering::SeqCst)
         {
             self.socket_close().await;
 
@@ -118,13 +129,14 @@ impl<'a> CoordState<'a> {
         self.socket_close().await;
 
         self.joystick_loop_alive.store(false, Ordering::SeqCst);
+        self.sck_alive_server.store(false, Ordering::SeqCst);
         self.to_gui.close();
         self.mec.close();
     }
 
     pub async fn socket_close(&mut self) {
-        self.sck_send_alive.store(false, Ordering::SeqCst);
-        self.sck_recv_alive.store(false, Ordering::SeqCst);
+        self.sck_alive_sender.store(false, Ordering::SeqCst);
+        self.sck_alive_recvr.store(false, Ordering::SeqCst);
         if let Some(tx) = self.to_socket.take() {
             tx.close();
         }
@@ -160,7 +172,7 @@ pub async fn start_coordinator(
 
                 state.socket_send(socket_message).await;
             }
-            ApplicationEvent::MoveEvent(coord) => {
+            ApplicationEvent::MoveEvent(coord, priority) => {
                 if let Err(e) = state.to_gui.send(GuiUpdate::MoveEvent(coord.clone())).await {
                     panic!("Could not set message to gui channel; Unrecoverable: {e}");
                 }

src/joystick_loop.rs

@@ -85,10 +85,13 @@ pub async fn joystick_loop(tx: Sender<ApplicationEvent>, is_alive: Arc<AtomicBoo
                 count_zeros = 0;
             }
 
-            match tx.try_send(ApplicationEvent::MoveEvent(MoveEvent {
+            match tx.try_send(ApplicationEvent::MoveEvent(
+                MoveEvent {
                     x: curr_x,
                     y: curr_y,
-            })) {
+                },
+                0,
+            )) {
                 Ok(_) => {}
                 Err(async_channel::TrySendError::Closed(_)) => {
                     info!("MEC is closed, stopping Joystick loop");

src/main.rs

@@ -6,10 +6,11 @@ use simplelog::SimpleLogger;
 use std::env;
 use tokio::runtime;
 
+mod camera_socket;
 mod config;
 mod coordinator;
 mod joystick_loop;
-mod camera_socket;
+mod socket_server;
 mod ui_code;
 const APP_ID: &str = "net.nickiel.joystick-controller-client";
 

src/socket_server.rs

@@ -0,0 +1,83 @@
+use std::{
+    net::SocketAddr,
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    },
+};
+
+use async_channel::Sender;
+use futures_util::StreamExt;
+use log::{error, info};
+use tokio::{
+    net::{TcpListener, TcpStream},
+    runtime::Handle,
+};
+use tokio_tungstenite::{
+    accept_async,
+    tungstenite::{Error, Result},
+};
+
+use crate::coordinator::{ApplicationEvent, MoveEvent};
+
+async fn accept_connection(peer: SocketAddr, stream: TcpStream, mec: Sender<ApplicationEvent>) {
+    if let Err(e) = handle_connection(peer, stream, mec.clone()).await {
+        match e {
+            Error::ConnectionClosed | Error::Protocol(_) | Error::Utf8 => (),
+            err => error!("Error processing connection: {}", err),
+        }
+    }
+}
+
+async fn handle_connection(
+    peer: SocketAddr,
+    stream: TcpStream,
+    mec: Sender<ApplicationEvent>,
+) -> Result<()> {
+    let mut ws_stream = accept_async(stream).await.expect("Failed to accept");
+
+    info!("New WebSocket connection: {}", peer);
+
+    while let Some(msg) = ws_stream.next().await {
+        let msg = msg?;
+        if msg.is_text() {
+            if let Err(e) = mec
+                .send(ApplicationEvent::MoveEvent(
+                    process_incoming_string(msg.to_string()),
+                    5,
+                ))
+                .await
+            {
+                error!("MEC Unavailable, closing the connection on the socket-server: {e}");
+                break;
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn process_incoming_string(message: String) -> MoveEvent {
+    return MoveEvent { x: 10, y: 30 };
+}
+
+pub async fn start_socketserver(
+    rt: Handle,
+    mec: Sender<ApplicationEvent>,
+    stay_alive: Arc<AtomicBool>,
+) {
+    let addr = "127.0.0.1:9002";
+    let listener = TcpListener::bind(&addr).await.expect("Can't listen");
+    info!("Listening on: {}", addr);
+
+    while let Ok((stream, _)) = listener.accept().await {
+        let peer = stream
+            .peer_addr()
+            .expect("connected streams should have a peer address");
+        info!("Peer address: {}", peer);
+
+        rt.spawn(accept_connection(peer, stream, mec.clone()));
+    }
+
+    stay_alive.store(false, Ordering::SeqCst);
+}