Implement MPRIS properties

- `PlaybackStatus`
- `PlaybackRate`
- `Volume` (get/set)

src/main.rs

@@ -203,7 +203,7 @@ fn main() -> Result<(), String> {
     ));
 
     #[cfg(feature = "mpris")]
-    ASYNC_RUNTIME.spawn(mpris::serve());
+    ASYNC_RUNTIME.spawn(mpris::serve(event_manager.clone(), spotify.clone()));
 
     let mut cmd_manager = CommandManager::new(
         spotify.clone(),

src/mpris.rs

@@ -1,6 +1,11 @@
 use std::{error::Error, future::pending};
 use zbus::{dbus_interface, ConnectionBuilder};
 
+use crate::{
+    events::EventManager,
+    spotify::{PlayerEvent, Spotify, VOLUME_PERCENT},
+};
+
 struct MprisRoot {}
 
 #[dbus_interface(name = "org.mpris.MediaPlayer2")]
@@ -36,12 +41,54 @@ impl MprisRoot {
     }
 }
 
-pub async fn serve() -> Result<(), Box<dyn Error + Sync + Send>> {
+struct MprisPlayer {
+    event: EventManager,
+    spotify: Spotify,
+}
+
+#[dbus_interface(name = "org.mpris.MediaPlayer2.Player")]
+impl MprisPlayer {
+    #[dbus_interface(property)]
+    fn playback_status(&self) -> &str {
+        match self.spotify.get_current_status() {
+            PlayerEvent::Playing(_) | PlayerEvent::FinishedTrack => "Playing",
+            PlayerEvent::Paused(_) => "Paused",
+            _ => "Stopped",
+        }
+    }
+
+    #[dbus_interface(property)]
+    fn playback_rate(&self) -> f64 {
+        1.0
+    }
+
+    #[dbus_interface(property)]
+    fn volume(&self) -> f64 {
+        self.spotify.volume() as f64 / 65535_f64
+    }
+
+    #[dbus_interface(property)]
+    fn set_volume(&self, volume: f64) {
+        log::info!("set volume: {volume}");
+        if (0.0..=1.0).contains(&volume) {
+            let vol = (VOLUME_PERCENT as f64) * volume * 100.0;
+            self.spotify.set_volume(vol as u16);
+            self.event.trigger();
+        }
+    }
+}
+
+pub async fn serve(
+    event: EventManager,
+    spotify: Spotify,
+) -> Result<(), Box<dyn Error + Sync + Send>> {
     let root = MprisRoot {};
+    let player = MprisPlayer { event, spotify };
 
     let _conn = ConnectionBuilder::session()?
-        .name("org.mpris.MediaPlayer2.ncspot")?
+        .name("org.mpris.MediaPlayer2.ncspot_new")?
         .serve_at("/org/mpris/MediaPlayer2", root)?
+        .serve_at("/org/mpris/MediaPlayer2", player)?
         .build()
         .await?;