Added tag filter for soundtracks

pages/soundtracks/best.go

@@ -20,11 +20,15 @@ func Best(ctx *aero.Context) string {
 
 	arn.SortSoundTracksPopularFirst(tracks)
 
+	// Limit the number of displayed tracks
+	loadMoreIndex := 0
+
 	if len(tracks) > maxTracks {
 		tracks = tracks[:maxTracks]
+		loadMoreIndex = maxTracks
 	}
 
-	return ctx.HTML(components.SoundTracks(tracks, maxTracks, user))
+	return ctx.HTML(components.SoundTracks(tracks, loadMoreIndex, "", user))
 }
 
 // BestFrom renders the soundtracks from the given index.

pages/soundtracks/soundtracks.go

@@ -30,7 +30,7 @@ func Latest(ctx *aero.Context) string {
 		loadMoreIndex = maxTracks
 	}
 
-	return ctx.HTML(components.SoundTracks(tracks, loadMoreIndex, user))
+	return ctx.HTML(components.SoundTracks(tracks, loadMoreIndex, "", user))
 }
 
 // LatestFrom renders the soundtracks from the given index.

pages/soundtracks/soundtracks.pixy

@@ -1,7 +1,7 @@
-component SoundTracks(tracks []*arn.SoundTrack, loadMoreIndex int, user *arn.User)
+component SoundTracks(tracks []*arn.SoundTrack, loadMoreIndex int, tag string, user *arn.User)
 	h1.page-title Soundtracks
 
-	SoundTracksTabs
+	SoundTracksTabs(tag)
 
 	.corner-buttons
 		if user != nil
@@ -25,7 +25,10 @@ component SoundTracksScrollable(tracks []*arn.SoundTrack, user *arn.User)
 	each track in tracks
 		SoundTrack(track)
 
-component SoundTracksTabs
+component SoundTracksTabs(tag string)
 	.tabs
 		Tab("Latest", "music", "/soundtracks")
-		Tab("Best", "heart", "/soundtracks/best")
+		Tab("Best", "heart", "/soundtracks/best")
+
+		if tag != ""
+			Tab(tag, "tag", "/soundtracks/tag/" + tag)

pages/soundtracks/tag.go

@@ -0,0 +1,72 @@
+package soundtracks
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/aerogo/aero"
+	"github.com/animenotifier/arn"
+	"github.com/animenotifier/notify.moe/components"
+	"github.com/animenotifier/notify.moe/utils"
+)
+
+// FilterByTag renders the soundtracks with the given tag.
+func FilterByTag(ctx *aero.Context) string {
+	user := utils.GetUser(ctx)
+	tag := ctx.Get("tag")
+
+	tracks := arn.FilterSoundTracks(func(track *arn.SoundTrack) bool {
+		return !track.IsDraft && len(track.Media) > 0 && track.HasTag(tag)
+	})
+
+	arn.SortSoundTracksPopularFirst(tracks)
+
+	// Limit the number of displayed tracks
+	loadMoreIndex := 0
+
+	if len(tracks) > maxTracks {
+		tracks = tracks[:maxTracks]
+		loadMoreIndex = maxTracks
+	}
+
+	return ctx.HTML(components.SoundTracks(tracks, loadMoreIndex, tag, user))
+}
+
+// FilterByTagFrom renders the soundtracks from the given index.
+func FilterByTagFrom(ctx *aero.Context) string {
+	user := utils.GetUser(ctx)
+	tag := ctx.Get("tag")
+	index, err := ctx.GetInt("index")
+
+	if err != nil {
+		return ctx.Error(http.StatusBadRequest, "Invalid start index", err)
+	}
+
+	allTracks := arn.FilterSoundTracks(func(track *arn.SoundTrack) bool {
+		return !track.IsDraft && len(track.Media) > 0 && track.HasTag(tag)
+	})
+
+	if index < 0 || index >= len(allTracks) {
+		return ctx.Error(http.StatusBadRequest, "Invalid start index (maximum is "+strconv.Itoa(len(allTracks))+")", nil)
+	}
+
+	arn.SortSoundTracksPopularFirst(allTracks)
+
+	tracks := allTracks[index:]
+
+	if len(tracks) > maxTracks {
+		tracks = tracks[:maxTracks]
+	}
+
+	nextIndex := index + maxTracks
+
+	if nextIndex >= len(allTracks) {
+		// End of data - no more scrolling
+		ctx.Response().Header().Set("X-LoadMore-Index", "-1")
+	} else {
+		// Send the index for the next request
+		ctx.Response().Header().Set("X-LoadMore-Index", strconv.Itoa(nextIndex))
+	}
+
+	return ctx.HTML(components.SoundTracksScrollable(tracks, user))
+}