Add related soundtracks to soundtrack page

pages/soundtrack/soundtrack.go

@@ -19,7 +19,15 @@ func Get(ctx aero.Context) error {
 		return ctx.Error(http.StatusNotFound, "Track not found", err)
 	}
 
+	var relatedTracks []*arn.SoundTrack
+	for _, anime := range track.Anime() {
+		tracks := arn.FilterSoundTracks(func(t *arn.SoundTrack) bool {
+			return !t.IsDraft && len(t.Media) > 0 && t.ID != track.ID && arn.Contains(t.Tags, "anime:"+anime.ID)
+		})
+		relatedTracks = append(relatedTracks, tracks...)
+	}
+
 	customCtx := ctx.(*middleware.OpenGraphContext)
 	customCtx.OpenGraph = getOpenGraph(track)
-	return ctx.HTML(components.SoundTrackPage(track, user))
+	return ctx.HTML(components.SoundTrackPage(track, relatedTracks, user))
 }

pages/soundtrack/soundtrack.pixy

@@ -1,4 +1,4 @@
-component SoundTrackPage(track *arn.SoundTrack, user *arn.User)
+component SoundTrackPage(track *arn.SoundTrack, relatedTracks []*arn.SoundTrack, user *arn.User)
 	SoundTrackTabs(track, user)
 
 	.soundtrack-full-page
@@ -37,6 +37,13 @@ component SoundTrackPage(track *arn.SoundTrack, user *arn.User)
 							li
 								a.soundtrack-link(href=link.URL, target="_blank")= link.Title
 
+			if len(relatedTracks) > 0
+				.widget.mountable
+					h3.widget-title Related SoundTracks
+					.soundtracks.anime-soundtracks
+						each relatedTrack in relatedTracks
+							SoundTrackMini(relatedTrack, user)
+
 			//- TODO: This is quite ineffective, performance-wise
 			if len(track.OsuBeatmaps()) > 0 || len(track.EtternaBeatmaps()) > 0
 				.widget.mountable