Convert all Subsonic API ints to int32 as per specification (#2252)

* Fix Genre

* Fix ArtistID3

* Fix AlbumID3

* Fix Child

* Fix NowPlayingEntry

* Fix Playlist

* Fix Share

* Fix User

* Fix Artist

* Fix Directory

* Fix Error

server/subsonic/helpers.go

@@ -85,8 +85,8 @@ func toArtist(r *http.Request, a model.Artist) responses.Artist {
 	artist := responses.Artist{
 		Id:             a.ID,
 		Name:           a.Name,
-		AlbumCount:     a.AlbumCount,
-		UserRating:     a.Rating,
+		AlbumCount:     int32(a.AlbumCount),
+		UserRating:     int32(a.Rating),
 		CoverArt:       a.CoverArtID().String(),
 		ArtistImageUrl: public.ImageURL(r, a.CoverArtID(), 600),
 	}
@@ -100,10 +100,10 @@ func toArtistID3(r *http.Request, a model.Artist) responses.ArtistID3 {
 	artist := responses.ArtistID3{
 		Id:             a.ID,
 		Name:           a.Name,
-		AlbumCount:     a.AlbumCount,
+		AlbumCount:     int32(a.AlbumCount),
 		CoverArt:       a.CoverArtID().String(),
 		ArtistImageUrl: public.ImageURL(r, a.CoverArtID(), 600),
-		UserRating:     a.Rating,
+		UserRating:     int32(a.Rating),
 	}
 	if a.Starred {
 		artist.Starred = &a.StarredAt
@@ -116,8 +116,8 @@ func toGenres(genres model.Genres) *responses.Genres {
 	for i, g := range genres {
 		response[i] = responses.Genre{
 			Name:       g.Name,
-			SongCount:  g.SongCount,
-			AlbumCount: g.AlbumCount,
+			SongCount:  int32(g.SongCount),
+			AlbumCount: int32(g.AlbumCount),
 		}
 	}
 	return &responses.Genres{Genre: response}
@@ -142,14 +142,14 @@ func childFromMediaFile(ctx context.Context, mf model.MediaFile) responses.Child
 	child.IsDir = false
 	child.Parent = mf.AlbumID
 	child.Album = mf.Album
-	child.Year = mf.Year
+	child.Year = int32(mf.Year)
 	child.Artist = mf.Artist
 	child.Genre = mf.Genre
-	child.Track = mf.TrackNumber
-	child.Duration = int(mf.Duration)
+	child.Track = int32(mf.TrackNumber)
+	child.Duration = int32(mf.Duration)
 	child.Size = mf.Size
 	child.Suffix = mf.Suffix
-	child.BitRate = mf.BitRate
+	child.BitRate = int32(mf.BitRate)
 	child.CoverArt = mf.CoverArtID().String()
 	child.ContentType = mf.ContentType()
 	player, ok := request.PlayerFrom(ctx)
@@ -158,7 +158,7 @@ func childFromMediaFile(ctx context.Context, mf model.MediaFile) responses.Child
 	} else {
 		child.Path = fakePath(mf)
 	}
-	child.DiscNumber = mf.DiscNumber
+	child.DiscNumber = int32(mf.DiscNumber)
 	child.Created = &mf.CreatedAt
 	child.AlbumId = mf.AlbumID
 	child.ArtistId = mf.ArtistID
@@ -170,7 +170,7 @@ func childFromMediaFile(ctx context.Context, mf model.MediaFile) responses.Child
 	if mf.Starred {
 		child.Starred = &mf.StarredAt
 	}
-	child.UserRating = mf.Rating
+	child.UserRating = int32(mf.Rating)
 
 	format, _ := getTranscoding(ctx)
 	if mf.Suffix != "" && format != "" && mf.Suffix != format {
@@ -209,14 +209,14 @@ func childFromAlbum(_ context.Context, al model.Album) responses.Child {
 	child.Name = al.Name
 	child.Album = al.Name
 	child.Artist = al.AlbumArtist
-	child.Year = al.MaxYear
+	child.Year = int32(al.MaxYear)
 	child.Genre = al.Genre
 	child.CoverArt = al.CoverArtID().String()
 	child.Created = &al.CreatedAt
 	child.Parent = al.AlbumArtistID
 	child.ArtistId = al.AlbumArtistID
-	child.Duration = int(al.Duration)
-	child.SongCount = al.SongCount
+	child.Duration = int32(al.Duration)
+	child.SongCount = int32(al.SongCount)
 	if al.Starred {
 		child.Starred = &al.StarredAt
 	}
@@ -224,7 +224,7 @@ func childFromAlbum(_ context.Context, al model.Album) responses.Child {
 	if al.PlayCount > 0 {
 		child.Played = &al.PlayDate
 	}
-	child.UserRating = al.Rating
+	child.UserRating = int32(al.Rating)
 	return child
 }