Infinite scrolling for activities

pages/activity/render.go

@@ -0,0 +1,43 @@
+package activity
+
+import (
+	"github.com/aerogo/aero"
+	"github.com/animenotifier/arn"
+	"github.com/animenotifier/notify.moe/components"
+	"github.com/animenotifier/notify.moe/utils"
+	"github.com/animenotifier/notify.moe/utils/infinitescroll"
+)
+
+const (
+	activitiesFirstLoad = 40
+	activitiesPerScroll = 20
+)
+
+// render renders the activities page with the given activities.
+func render(ctx *aero.Context, allActivities []arn.Activity) string {
+	user := utils.GetUser(ctx)
+	index, _ := ctx.GetInt("index")
+
+	// Slice the part that we need
+	activities := allActivities[index:]
+	maxLength := activitiesFirstLoad
+
+	if index > 0 {
+		maxLength = activitiesPerScroll
+	}
+
+	if len(activities) > maxLength {
+		activities = activities[:maxLength]
+	}
+
+	// Next index
+	nextIndex := infinitescroll.NextIndex(ctx, len(allActivities), maxLength, index)
+
+	// In case we're scrolling, send activities only (without the page frame)
+	if index > 0 {
+		return ctx.HTML(components.ActivitiesScrollable(activities, user))
+	}
+
+	// Otherwise, send the full page
+	return ctx.HTML(components.ActivityFeed(activities, nextIndex, user))
+}