Add a new track tag + index for multiple artists

We still mostly use the singular 'Artist' tag for e.g. displaying a nice
name in the now playing screen, but where a track has an 'ARTISTS=' tag,
we'll split by semicolon and then use the resulting list to populate an
index of tracks by artist

1 files changed, 9 insertions, 0 deletions

diff --git a/src/tangara/database/index.cpp b/src/tangara/database/index.cpp
index 1cdc0d07..58a7ead4 100644
--- a/src/tangara/database/index.cpp
+++ b/src/tangara/database/index.cpp
@@ -56,6 +56,13 @@ const IndexInfo kAllAlbums{
     .components = {Tag::kAlbum, Tag::kAlbumOrder},
 };
 
+const IndexInfo kAllArtists{
+    .id = 7,
+    .type = MediaType::kMusic,
+    .name = "All Artists",
+    .components = {Tag::kAllArtists, Tag::kTitle},
+};
+
 const IndexInfo kPodcasts{
     .id = 5,
     .type = MediaType::kPodcast,
@@ -114,6 +121,8 @@ class Indexer {
         return "Unknown Album";
       case Tag::kAlbumArtist:
         return track_tags_.artist().value_or("Unknown Artist");
+      case Tag::kAllArtists:
+        return track_tags_.artist().value_or("Unknown Artist");
       case Tag::kGenres:
         return std::pmr::vector<std::pmr::string>{};
       case Tag::kDisc: