package genre import ( "strings" "github.com/aerogo/aero" "github.com/animenotifier/notify.moe/arn" "github.com/animenotifier/notify.moe/components" ) const animePerPage = 100 const animeRatingCountThreshold = 5 // Get renders the genre page. func Get(ctx aero.Context) error { user := arn.GetUserFromContext(ctx) genreName := ctx.Get("name") animes := []*arn.Anime{} for anime := range arn.StreamAnime() { if containsLowerCase(anime.Genres, genreName) { animes = append(animes, anime) } } userScore := averageUserScore(user, animes) userCompleted := totalCompleted(user, animes) globalScore := averageGlobalScore(animes) arn.SortAnimeByQuality(animes) if len(animes) > animePerPage { animes = animes[:animePerPage] } return ctx.HTML(components.Genre(genreName, animes, user, userScore, userCompleted, globalScore)) } // containsLowerCase tells you whether the given element exists when all elements are lowercased. func containsLowerCase(array []string, search string) bool { for _, item := range array { if strings.ToLower(item) == search { return true } } return false } // averageUserScore counts the user's average score for a list of anime. func averageUserScore(user *arn.User, animes []*arn.Anime) float64 { if user == nil { return 0 } count := 0.0 scores := 0.0 animeList := user.AnimeList() for _, anime := range animes { userAnime := animeList.Find(anime.ID) if userAnime != nil && !userAnime.Rating.IsNotRated() { scores += userAnime.Rating.Overall count++ } } if count == 0.0 { return 0 } return scores / count } // averageGlobalScore returns the average overall score for the given anime. func averageGlobalScore(animes []*arn.Anime) float64 { sum := 0.0 count := 0 for _, anime := range animes { if anime.Rating.Count.Overall >= animeRatingCountThreshold { sum += anime.Rating.Overall count++ } } return sum / float64(count) } // totalCompleted counts the number of anime the user has completed from a given list of anime. func totalCompleted(user *arn.User, animes []*arn.Anime) int { if user == nil { return 0 } count := 0 completedList := user.AnimeList().FilterStatus(arn.AnimeListStatusCompleted) for _, anime := range animes { if completedList.Contains(anime.ID) { count++ } } return count }