From b453b8f7d510940da2fb3b5c1c88f8ba2caa2012 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Thu, 17 Sep 2020 23:57:10 +0200
Subject: rust: Special *status room for meta-messages

---
 rust/src/main.rs | 55 ++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 34 insertions(+), 21 deletions(-)

(limited to 'rust')

diff --git a/rust/src/main.rs b/rust/src/main.rs
index 4b79973..6e10938 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -88,6 +88,10 @@ async fn send_command(conn: &Connection, cmd: Command) -> io::Result<Reply> {
     }
 }
 
+static STATUS_ROOM: Lazy<Word> = Lazy::new(|| {
+    Word::try_from("*status".to_string()).unwrap()
+});
+
 type Stdout = MouseTerminal<AlternateScreen<RawTerminal<io::Stdout>>>;
 // type Stdout = MouseTerminal<io::Stdout>;
 
@@ -146,13 +150,17 @@ enum HItem {
 impl App {
     fn new(conn: Connection, stdout: Stdout, username: Word) -> Self {
         let termsize = (0, 0);
+
+        let mut init_rooms_map = HashMap::new();
+        init_rooms_map.insert(STATUS_ROOM.clone(), RoomData::default());
+
         let state = State {
             stdout,
             termsize,
             layout: Layout::default(),
-            roomlist: Vec::new(),
-            rooms: HashMap::new(),
-            currentroom: Word::default(),
+            roomlist: vec![STATUS_ROOM.clone()],
+            rooms: init_rooms_map,
+            currentroom: STATUS_ROOM.clone(),
             msgs: HashMap::new(),
         };
         App {
@@ -172,7 +180,7 @@ impl App {
                 let mut state = self.state.lock().await;
                 let toremove =
                         state.roomlist.iter()
-                                      .filter(|r| !newrooms.contains(r))
+                                      .filter(|&r| *r != *STATUS_ROOM && !newrooms.contains(r))
                                       .cloned()
                                       .collect::<HashSet<_>>();
                 state.roomlist.retain(|r| !toremove.contains(r));
@@ -196,7 +204,7 @@ impl App {
             if state.rooms.insert(room.clone(), RoomData::default()).is_none() {
                 state.roomlist.push(room.clone());
 
-                if state.currentroom.len() == 0 {
+                if state.currentroom == *STATUS_ROOM {
                     state.currentroom = room.clone();
                 }
             }
@@ -320,8 +328,8 @@ impl App {
         let mut state = self.state.lock().await;
         let current_index =
                 state.roomlist.iter().enumerate()
-                              .filter(|&t| *t.1 == state.currentroom)
-                              .map(|t| t.0)
+                              .filter(|&(_, r)| *r == state.currentroom)
+                              .map(|(i, _)| i)
                               .next().unwrap_or(0);
         let index = (current_index as isize + delta)
                         .max(0).min(state.roomlist.len() as isize - 1);
@@ -381,18 +389,24 @@ impl App {
                 let app = self.clone();
                 task::spawn(async move {
                     let room = app.state.lock().await.currentroom.clone();
-                    let line = Line::try_from(msg).unwrap();
-                    if let Ok(Reply::Number(id)) = send_command(&app.conn, Command::Send {
-                        room_name: room.clone(), reply_on: None, message: line.clone()
-                    }).await {
-                        app.add_message(Message {
-                            id: Id::try_from(id).unwrap(),
-                            reply_on: None,
-                            roomname: room,
-                            username: app.username.clone(),
-                            timestamp: std::time::SystemTime::now(),
-                            message: line,
-                        }).await.unwrap();
+                    if room == *STATUS_ROOM {
+                        app.append_history_item(&STATUS_ROOM,
+                            HItem::Service("Cannot send messages in this magic status room".to_string())
+                        ).await.unwrap();
+                    } else {
+                        let line = Line::try_from(msg).unwrap();
+                        if let Ok(Reply::Number(id)) = send_command(&app.conn, Command::Send {
+                            roomname: room.clone(), reply_on: None, message: line.clone()
+                        }).await {
+                            app.add_message(Message {
+                                id: Id::try_from(id).unwrap(),
+                                reply_on: None,
+                                roomname: room,
+                                username: app.username.clone(),
+                                timestamp: std::time::SystemTime::now(),
+                                message: line,
+                            }).await.unwrap();
+                        }
                     }
                 });
             }
@@ -402,8 +416,7 @@ impl App {
             }
 
             Ok((cmd, _)) => {
-                let room = self.state.lock().await.currentroom.clone();
-                self.append_history_item(&room, HItem::Service(format!("Unknown command: '{}'", cmd))).await?;
+                self.append_history_item(&STATUS_ROOM, HItem::Service(format!("Unknown command: '{}'", cmd))).await?;
             }
         }
 
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