Show character ranking in info table

pages/character/ranking.go

@@ -0,0 +1,33 @@
+package character
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/aerogo/aero"
+	"github.com/animenotifier/arn"
+)
+
+// Ranking returns the ranking information for the character via the API.
+func Ranking(ctx *aero.Context) string {
+	id := ctx.Get("id")
+	_, err := arn.GetCharacter(id)
+
+	if err != nil {
+		return ctx.Error(http.StatusNotFound, "Character not found", err)
+	}
+
+	characters := arn.FilterCharacters(func(character *arn.Character) bool {
+		return !character.IsDraft
+	})
+
+	arn.SortCharactersByLikes(characters)
+
+	for index, character := range characters {
+		if character.ID == id {
+			return strconv.Itoa(index + 1)
+		}
+	}
+
+	return ""
+}