Implement toast notification on macOS and Linux

src/lib.rs

@@ -137,6 +137,8 @@ pub mod pomodoro {
                 self.next();
                 self.alert.play();
 
+                Self::notify(&self.state);
+
                 match self.state {
                     State::Work => {
                         Self::send_to_clock(&tx, self.state, config.work_time);
@@ -167,6 +169,40 @@ pub mod pomodoro {
 
             tx.send(status).unwrap();
         }
+
+        #[cfg(any(target_os = "macos", target_os = "linux"))]
+        fn notify(state: &State) {
+            let mut toast = notify_rust::Notification::new();
+
+            match state {
+                State::Work => {
+                    toast
+                        .summary("Time to Work!")
+                        .body("Remember to stay focused!")
+                        .show()
+                        .unwrap();
+                }
+                State::ShortBreak | State::LongBreak => {
+                    toast
+                        .summary("Break Time!")
+                        .body("Enjoy your well deserved rest!")
+                        .show()
+                        .unwrap();
+                }
+                State::Inactive => {
+                    toast
+                        .summary("Pomodoro Cycle Complete.")
+                        .body("Now waiting for user input....")
+                        .show()
+                        .unwrap();
+                }
+            }
+        }
+
+        #[cfg(target_os = "windows")]
+        fn notify(state: &State) {
+            unimplemented!();
+        }
     }
 
     #[derive(Copy, Clone, Debug)]