Add skip command

src/main.rs

@@ -131,7 +131,8 @@ fn main() {
                 ),
             )
             .cmd("stop", Stop::new(media_data.clone()))
-            .cmd("list", List::new(media_data.clone())),
+            .cmd("list", List::new(media_data.clone()))
+            .cmd("skip", Skip::new(media_data.clone())),
     );
 
     let _ = client

src/player.rs

@@ -481,3 +481,68 @@ impl serenity::framework::standard::Command for Stop {
         Ok(())
     }
 }
+
+pub struct Skip {
+    media: Arc<MediaData>,
+}
+
+impl Skip {
+    pub fn new(media_data: Arc<MediaData>) -> Skip {
+        Skip { media: media_data }
+    }
+}
+
+impl serenity::framework::standard::Command for Skip {
+    #[allow(unreachable_code, unused_mut)]
+    fn execute(
+        &self,
+        ctx: &mut serenity::client::Context,
+        msg: &serenity::model::channel::Message,
+        _: serenity::framework::standard::Args,
+    ) -> ::std::result::Result<(), serenity::framework::standard::CommandError> {
+        let mut manager_lock = ctx
+            .data
+            .lock()
+            .get::<super::VoiceManager>()
+            .cloned()
+            .unwrap();
+
+        let mut manager = manager_lock.lock();
+
+        let guild_id = match guild_id(msg.channel_id) {
+            Some(id) => id,
+            None => {
+                println!("error getting guild id");
+
+                super::check_msg(msg.channel_id.say("error getting guild id"));
+
+                return Ok(());
+            }
+        };
+
+        if let Some(handler) = handler(guild_id, &mut manager) {
+            let playlist_mutex = self.media.playlist_mut();
+            let mut playlist = playlist_mutex.borrow_mut();
+
+            let song_mutex = self.media.song_mut();
+            let mut song = song_mutex.borrow_mut();
+
+            if playlist.is_empty() {
+                super::check_msg(
+                    msg.channel_id
+                        .say("playlist is empty, no next song available"),
+                );
+
+                return Ok(());
+            } else {
+                let first = playlist.remove(0);
+
+                *song = Some(handler.play_returning(first.source));
+
+                super::check_msg(msg.channel_id.say(format!("Playing song: {}", first.name)));
+            }
+        }
+
+        Ok(())
+    }
+}