Fix a few things that got forgotten during the refactor

Persephone/Controllers/QueueViewController.swift

@@ -36,7 +36,7 @@ class QueueViewController: NSViewController,
     let newQueuePos = queueView.selectedRow - 1
 
     if newQueuePos >= 0 {
-      AppDelegate.mpdClient.playTrack(queuePos: newQueuePos)
+      AppDelegate.mpdClient.playTrack(at: newQueuePos)
     }
   }
 

Persephone/MPDClient/Extensions/MPDClient+Command.swift

@@ -24,12 +24,22 @@ extension MPDClient {
       sendStop()
     case .playPause:
       sendPlay()
+    case .seekCurrentSong:
+      guard let timeInSeconds = userData["timeInSeconds"] as? Float
+        else { return }
+      sendSeekCurrentSong(timeInSeconds: timeInSeconds)
 
     // Status commands
     case .fetchStatus:
       sendRunStatus()
+
+    // Queue commands
     case .fetchQueue:
       sendFetchQueue()
+    case .playTrack:
+      guard let queuePos = userData["queuePos"] as? Int
+        else { return }
+      sendPlayTrack(at: queuePos)
 
     // Album commands
     case .fetchAllAlbums:

Persephone/MPDClient/Extensions/MPDClient+Queue.swift

@@ -14,16 +14,12 @@ extension MPDClient {
     sendCommand(command: .fetchQueue)
   }
 
-  func playTrack(queuePos: Int) {
-    guard isConnected else { return }
+  func playTrack(at queuePos: Int) {
+    queueCommand(command: .playTrack, userData: ["queuePos": queuePos])
+  }
 
-    noIdle()
-    let commandOperation = BlockOperation { [unowned self] in
-      mpd_run_play_pos(self.connection, UInt32(queuePos))
-    }
-    commandOperation.queuePriority = .veryHigh
-    commandQueue.addOperation(commandOperation)
-    idle()
+  func sendPlayTrack(at queuePos: Int) {
+    mpd_run_play_pos(self.connection, UInt32(queuePos))
   }
 
   func sendFetchQueue() {

Persephone/MPDClient/Extensions/MPDClient+Transport.swift

@@ -27,11 +27,10 @@ extension MPDClient {
   }
 
   func seekCurrentSong(timeInSeconds: Float) {
-    noIdle()
-    commandQueue.addOperation { [unowned self] in
-      mpd_run_seek_current(self.connection, timeInSeconds, false)
-    }
-    idle()
+    queueCommand(
+      command: .seekCurrentSong,
+      userData: ["timeInSeconds": timeInSeconds]
+    )
   }
 
   func sendNextTrack() {
@@ -62,4 +61,7 @@ extension MPDClient {
     }
   }
 
+  func sendSeekCurrentSong(timeInSeconds: Float) {
+    mpd_run_seek_current(self.connection, timeInSeconds, false)
+  }
 }

Persephone/MPDClient/MPDClient.swift

@@ -22,8 +22,8 @@ class MPDClient {
   var commandsQueued: UInt = 0
 
   enum Command {
-    case prevTrack, nextTrack, playPause, stop,
-      fetchStatus, fetchQueue, fetchAllAlbums,
+    case prevTrack, nextTrack, playPause, stop, seekCurrentSong,
+      fetchStatus, fetchQueue, playTrack, fetchAllAlbums,
       playAlbum, getAlbumURI
   }