package goanilist

import (
	"encoding/json"
	"strconv"
)

type APIError interface {
	Get() *FlexibleError
}

type FlexibleError struct {
	RawError     *json.RawMessage `json:"error"`
	Error        string
	ErrorMessage string `json:"error_message"`
}

type complexError struct {
	Error            string   `json:"error"`
	ErrorDescription string   `json:"error_description"`
	Status           int      `json:"status"`
	Messages         []string `json:"messages"`
}

func (e *FlexibleError) ParseRawError() {
	if e.RawError == nil {
		return
	}
	ce := complexError{}
	err := json.Unmarshal(*e.RawError, &ce)
	if err == nil {
		if ce.Error != "" {
			e.Error = ce.Error
			e.ErrorMessage = ce.ErrorDescription
		} else {
			e.Error = strconv.Itoa(ce.Status)
			e.ErrorMessage = ""
			for k, v := range ce.Messages {
				if k > 0 {
					e.ErrorMessage += "\n"
				}
				e.ErrorMessage += v
			}
		}
	} else {
		e.Error = string(*e.RawError)
	}
}

func (e *FlexibleError) Get() *FlexibleError {
	return e
}

type AccessTokenResult struct {
	FlexibleError
	AccessToken  string `json:"access_token"`
	TokenType    string `json:"token_type"`
	Expires      int64  `json:"expires"`
	ExpiresIn    int    `json:"expires_in"`
	RefreshToken string `json:"refresh_token"`
}

type UserResult struct {
	FlexibleError
	ID          int    `json:"id"`
	DisplayName string `json:"display_name"`
}

type FavouritesResult struct {
	FlexibleError
	Characters CharacterResultCollection `json:"character"`
}

type CharacterResultCollection []CharacterResult

func (c CharacterResultCollection) Len() int {
	return len(c)
}

func (c CharacterResultCollection) Less(i, j int) bool {
	return c[i].Order < c[j].Order
}

func (c CharacterResultCollection) Swap(i, j int) {
	c[i], c[j] = c[j], c[i]
}

type CharacterResult struct {
	FlexibleError
	ID              int    `json:"id"`
	GivenName       string `json:"name_first"`
	FamilyName      string `json:"name_last"`
	JapaneseName    string `json:"name_japanese"`
	AlternativeName string `json:"name_alt"`
	Info            string `json:"info"`
	Role            string `json:"role"`
	ImageURL        string `json:"image_url_lge"`
	ThumbURL        string `json:"image_url_med"`
	Order           int    `json:"order"`
}

type CharacterPageResult struct {
	FlexibleError
	CharacterResult
	Anime []AnimeResult `json:"anime"`
	Manga []MangaResult `json:"manga"`
}

type SeriesResult struct {
	FlexibleError
	ID            int      `json:"id"`
	SeriesType    string   `json:"series_type"`
	Type          string   `json:"type"`
	TitleRomaji   string   `json:"title_romaji"`
	TitleEnglish  string   `json:"title_english"`
	TitleJapanese string   `json:"title_japanese"`
	Synonyms      []string `json:"synonyms"`
	Description   string   `json:"description"`
	StartDate     int64    `json:"start_date_fuzzy"`
	EndDate       int64    `json:"end_date_fuzzy"`
	Season        int      `json:"season"`
	Genres        []string `json:"genres"`
	Adult         bool     `json:"adult"`
	AverageScore  float32  `json:"average_score"`
	Popularity    int      `json:"popularity"`
	Favourite     bool     `json:"favourite"`
	ImageURL      string   `json:"image_url_lge"`
	ThumbSmallURL string   `json:"image_url_sml"`
	ThumbBigURL   string   `json:"image_url_med"`
	BannerURL     string   `json:"image_url_banner"`
	UpdatedAt     int64    `json:"updated_at"`
}

type AnimeResult struct {
	FlexibleError
	SeriesResult
	TotalEpisodes   int    `json:"total_episodes"`
	EpisodeDuration int    `json:"duration"`
	AiringStatus    string `json:"airing_status"`
	YoutubeID       string `json:"youtube_id"`
	Hashtag         string `json:"hashtag"`
	Source          string `json:"source"`
}

type MangaResult struct {
	FlexibleError
	SeriesResult
	TotalChapters    int    `json:"total_chapters"`
	TotalVolumes     int    `json:"total_volumes"`
	PublishingStatus string `json:"publishing_status"`
}