Implement Next and Previous

README.md

@@ -94,6 +94,8 @@ $ gspt
 1. `o` Open the Current Track's Album
 1. `O` Open the Current Track's Artist
 1. `ctrl-o` Open the Current Context (Album/Artist/Playlist)
+1. `n` Play Next Song in Queue
+1. `p` Play Previous Song in Queue
 
 ## Command-line Parameters
 

config/config.go

@@ -34,6 +34,8 @@ var (
 			{R: ' '}:            "toggle_playback",
 			{R: 'o'}:            "open_current_track_album",
 			{R: 'O'}:            "open_current_track_artist",
+			{R: 'n'}:            "next",
+			{R: 'p'}:            "previous",
 			{K: tcell.KeyCtrlO}: "open_current_context",
 		},
 		"playlist_nav": {

spt/play.go

@@ -61,3 +61,11 @@ func UriToID(uri spotify.URI) (spotify.ID, error) {
 	}
 	return spotify.ID(a[2]), nil
 }
+
+func Next() error {
+	return Client.Next(ctx())
+}
+
+func Previous() error {
+	return Client.Previous(ctx())
+}

ui/app.go

@@ -235,6 +235,20 @@ func NewApplication() *tview.Application {
 			}
 			return nil
 		}, nil),
+		"next": NewAction(func(e *tcell.EventKey) *tcell.EventKey {
+			if err := spt.Next(); err != nil {
+				SendNotification(err.Error())
+				return e
+			}
+			return nil
+		}, nil),
+		"previous": NewAction(func(e *tcell.EventKey) *tcell.EventKey {
+			if err := spt.Previous(); err != nil {
+				SendNotification(err.Error())
+				return e
+			}
+			return nil
+		}, nil),
 	}
 	playlistNav.SetActions(utils.MergeMaps(globalActions, map[string]*Action{
 		"play_entry": NewAction(playlistNav.PlaySelectEntry,