Added patch to add genres

patches/add-mal-genres/add-mal-genres.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/animenotifier/arn"
+	"github.com/animenotifier/mal"
+	"github.com/fatih/color"
+)
+
+func main() {
+	defer arn.Node.Close()
+
+	count := 0
+
+	for anime := range arn.StreamAnime() {
+		if len(anime.Genres) > 0 {
+			continue
+		}
+
+		malID := anime.GetMapping("myanimelist/anime")
+
+		if malID == "" {
+			continue
+		}
+
+		malAnimeObj, err := arn.MAL.Get("Anime", malID)
+
+		if err != nil {
+			continue
+		}
+
+		malAnime := malAnimeObj.(*mal.Anime)
+
+		if len(malAnime.Genres) == 0 {
+			continue
+		}
+
+		anime.Genres = malAnime.Genres
+		anime.Save()
+
+		count++
+
+		fmt.Println(anime.ID, anime, anime.Genres)
+	}
+
+	color.Green("Added genres to %d anime", count)
+}