feat: add server start method

src/network/server.rs

@@ -0,0 +1,92 @@
+use log::{error, info};
+use std::net::{IpAddr, Ipv4Addr, SocketAddr};
+use tokio::{
+    net::{TcpListener, TcpStream},
+    sync::mpsc::{Receiver, Sender},
+};
+
+use crate::{
+    logic::game_master::GameMaster,
+    network::{
+        connection::{Connection, ConnectionType},
+        message::{ClientMessage, Message, ServerMessage},
+    },
+};
+
+// TODO! More settings!
+pub struct ServerSettings {
+    pub addr: SocketAddr,
+    pub max_connections: usize,
+    pub allow_spectators: bool,
+}
+
+pub struct Server {
+    listener: TcpListener,
+    connections: Vec<Connection<ClientMessage, ServerMessage>>,
+    reciever: Receiver<Message<ClientMessage>>,
+    sender: Sender<Message<ClientMessage>>,
+    game_master: Option<GameMaster>,
+    settings: ServerSettings,
+}
+
+impl Server {
+    pub async fn new() -> Server {
+        // TODO! Should be read from a file
+        let settings = ServerSettings {
+            addr: SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 6767),
+            max_connections: 2,
+            allow_spectators: false,
+        };
+
+        let (sender, mut reciever) = tokio::sync::mpsc::channel::<Message<ClientMessage>>(1024); // random
+        // number
+
+        Server {
+            listener: TcpListener::bind(settings.addr)
+                .await
+                .expect("Could not start the server"), // TODO! Handle this nicely, as this will
+            // crash gui app
+            connections: vec![],
+            sender,
+            reciever,
+            game_master: None,
+            settings,
+        }
+    }
+
+    pub async fn start(&mut self) {
+        self.start_listening().await;
+    }
+
+    async fn start_listening(&mut self) {
+        // TODO! Maybe allow connection and then gently refuse with reason?
+        while self.connections.len() < self.settings.max_connections
+            && !self.settings.allow_spectators
+        {
+            match self.listener.accept().await {
+                Ok((socket, addr)) => {
+                    self.handle_new_client(socket, addr);
+                }
+                Err(e) => {
+                    error!("Error while accepting a new connection: {}", e);
+                }
+            }
+        }
+    }
+
+    fn handle_new_client(&mut self, socket: TcpStream, addr: SocketAddr) {
+        info!("New connection from: {:?}", addr);
+        let mut conn: Connection<ClientMessage, ServerMessage> =
+            Connection::new(ConnectionType::Client, self.sender.clone());
+
+        conn.delegate(socket, addr);
+        self.connections.push(conn);
+    }
+
+    fn request_handshake(&self) {
+        let conn = self.connections.last().unwrap();
+        info!("Requesting handshake from: {:?}", conn);
+
+        todo!();
+    }
+}