kratactl: rework to separate commands

crates/kratactl/src/cli/watch.rs

@@ -0,0 +1,28 @@
+use anyhow::Result;
+use clap::Parser;
+use krata::control::watch_events_reply::Event;
+
+use crate::{cli::pretty::guest_status_text, events::EventStream};
+
+#[derive(Parser)]
+pub struct WatchCommand {}
+
+impl WatchCommand {
+    pub async fn run(self, events: EventStream) -> Result<()> {
+        let mut stream = events.subscribe();
+        loop {
+            let event = stream.recv().await?;
+            match event {
+                Event::GuestChanged(changed) => {
+                    if let Some(guest) = changed.guest {
+                        println!(
+                            "event=guest.changed guest={} status={}",
+                            guest.id,
+                            guest_status_text(guest.state.unwrap_or_default().status())
+                        );
+                    }
+                }
+            }
+        }
+    }
+}