implement initial loading of spotify playlists

Playlist can now be added to the initial play queue with the
-playlists command line flag or the playlists yaml key in the
config file.
To load a spotify playlist the link obtained when sharing the playlist
from spotify is used.

1 files changed, 9 insertions, 0 deletions

diff --git a/player.go b/player.go
index 795978b..b8db8fa 100644
--- a/player.go
+++ b/player.go
@@ -20,6 +20,7 @@ type Player interface {
 	Pause()
 	Continue()
 	Stop()
+	LoadPlaylist(playlist string) []*Song
 }
 
 // command struct used to serialize player commands
@@ -253,3 +254,11 @@ func (player *MpvPlayer) Search(pattern map[string]string) chan []*Song {
 
 	return ch
 }
+
+func (player *MpvPlayer) LoadPlaylist(playlist string) (songs []*Song) {
+	if strings.Contains(playlist, "spotify.com") {
+		songs = player.Backends["spotify"].(*SpotifyBackend).loadPlaylist(playlist)
+	}
+
+	return
+}