fix(wm): handle winvd errors gracefully

Of course, the crate built to interact with an undocumented COM API is
not the best candidate for unwrap and expect calls...

fix #15

komorebi/src/process_command.rs

@@ -52,16 +52,17 @@ pub fn listen_for_commands(wm: Arc<Mutex<WindowManager>>) {
 impl WindowManager {
     #[tracing::instrument(skip(self))]
     pub fn process_command(&mut self, message: SocketMessage) -> Result<()> {
-        let virtual_desktop_id = winvd::helpers::get_current_desktop_number()
-            .expect("could not determine the current virtual desktop number");
+        let virtual_desktop_id = winvd::helpers::get_current_desktop_number().ok();
+        if let (Some(id), Some(virtual_desktop_id)) = (virtual_desktop_id, self.virtual_desktop_id)
+        {
+            if id != virtual_desktop_id {
+                tracing::warn!(
+                    "ignoring events while not on virtual desktop {:?}",
+                    virtual_desktop_id
+                );
 
-        if virtual_desktop_id != self.virtual_desktop_id {
-            tracing::warn!(
-                "ignoring commands while not on virtual desktop {}",
-                self.virtual_desktop_id
-            );
-
-            return Ok(());
+                return Ok(());
+            }
         }
 
         match message {

komorebi/src/process_event.rs

@@ -48,16 +48,17 @@ impl WindowManager {
             return Ok(());
         }
 
-        let virtual_desktop_id = winvd::helpers::get_current_desktop_number()
-            .expect("could not determine the current virtual desktop number");
+        let virtual_desktop_id = winvd::helpers::get_current_desktop_number().ok();
+        if let (Some(id), Some(virtual_desktop_id)) = (virtual_desktop_id, self.virtual_desktop_id)
+        {
+            if id != virtual_desktop_id {
+                tracing::warn!(
+                    "ignoring events while not on virtual desktop {:?}",
+                    virtual_desktop_id
+                );
 
-        if virtual_desktop_id != self.virtual_desktop_id {
-            tracing::warn!(
-                "ignoring events while not on virtual desktop {}",
-                self.virtual_desktop_id
-            );
-
-            return Ok(());
+                return Ok(());
+            }
         }
 
         // Make sure we have the most recently focused monitor from any event

komorebi/src/window_manager.rs

@@ -45,7 +45,7 @@ pub struct WindowManager {
     pub command_listener: UnixListener,
     pub is_paused: bool,
     pub hotwatch: Hotwatch,
-    pub virtual_desktop_id: usize,
+    pub virtual_desktop_id: Option<usize>,
 }
 
 #[derive(Debug, Serialize)]
@@ -123,8 +123,7 @@ impl WindowManager {
 
         let listener = UnixListener::bind(&socket)?;
 
-        let virtual_desktop_id = winvd::helpers::get_current_desktop_number()
-            .expect("could not determine the current virtual desktop number");
+        let virtual_desktop_id = winvd::helpers::get_current_desktop_number().ok();
 
         Ok(Self {
             monitors: Ring::default(),