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crunchyroll.go
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/
crunchyroll.go
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package crunchyroll
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"regexp"
"strconv"
)
// LOCALE represents a locale / language.
type LOCALE string
const (
JP LOCALE = "ja-JP"
US = "en-US"
LA = "es-419"
ES = "es-ES"
FR = "fr-FR"
PT = "pt-PT"
BR = "pt-BR"
IT = "it-IT"
DE = "de-DE"
RU = "ru-RU"
AR = "ar-SA"
)
type Crunchyroll struct {
// Client is the http.Client to perform all requests over.
Client *http.Client
// Context can be used to stop requests with Client and is context.Background by default.
Context context.Context
// Locale specifies in which language all results should be returned / requested.
Locale LOCALE
// SessionID is the crunchyroll session id which was used for authentication.
SessionID string
// Config stores parameters which are needed by some api calls.
Config struct {
TokenType string
AccessToken string
CountryCode string
Premium bool
Channel string
Policy string
Signature string
KeyPairID string
AccountID string
ExternalID string
MaturityRating string
}
// If cache is true, internal caching is enabled.
cache bool
}
// LoginWithCredentials logs in via crunchyroll username or email and password.
func LoginWithCredentials(user string, password string, locale LOCALE, client *http.Client) (*Crunchyroll, error) {
sessionIDEndpoint := fmt.Sprintf("https://api.crunchyroll.com/start_session.0.json?version=1.0&access_token=%s&device_type=%s&device_id=%s",
"LNDJgOit5yaRIWN", "com.crunchyroll.windows.desktop", "Az2srGnChW65fuxYz2Xxl1GcZQgtGgI")
sessResp, err := client.Get(sessionIDEndpoint)
if err != nil {
return nil, err
}
defer sessResp.Body.Close()
if sessResp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("failed to start session for credentials login: %s", sessResp.Status)
}
var data map[string]interface{}
body, _ := io.ReadAll(sessResp.Body)
if err = json.Unmarshal(body, &data); err != nil {
return nil, fmt.Errorf("failed to parse start session with credentials response: %w", err)
}
sessionID := data["data"].(map[string]interface{})["session_id"].(string)
loginEndpoint := "https://api.crunchyroll.com/login.0.json"
authValues := url.Values{}
authValues.Set("session_id", sessionID)
authValues.Set("account", user)
authValues.Set("password", password)
loginResp, err := client.Post(loginEndpoint, "application/x-www-form-urlencoded", bytes.NewBufferString(authValues.Encode()))
if err != nil {
return nil, err
}
defer loginResp.Body.Close()
if loginResp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("failed to auth with credentials: %s", loginResp.Status)
} else {
var loginRespBody map[string]interface{}
json.NewDecoder(loginResp.Body).Decode(&loginRespBody)
if loginRespBody["error"].(bool) {
return nil, fmt.Errorf("an unexpected login error occoured: %s", loginRespBody["message"])
}
}
return LoginWithSessionID(sessionID, locale, client)
}
// LoginWithSessionID logs in via a crunchyroll session id.
// Session ids are automatically generated as a cookie when visiting https://www.crunchyroll.com.
func LoginWithSessionID(sessionID string, locale LOCALE, client *http.Client) (*Crunchyroll, error) {
crunchy := &Crunchyroll{
Client: client,
Context: context.Background(),
Locale: locale,
SessionID: sessionID,
cache: true,
}
var endpoint string
var err error
var resp *http.Response
var jsonBody map[string]interface{}
// start session
endpoint = fmt.Sprintf("https://api.crunchyroll.com/start_session.0.json?session_id=%s",
sessionID)
resp, err = client.Get(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("failed to start session: %s", resp.Status)
}
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, fmt.Errorf("failed to parse start session with session id response: %w", err)
}
if isError, ok := jsonBody["error"]; ok && isError.(bool) {
return nil, fmt.Errorf("invalid session id (%s): %s", jsonBody["message"].(string), jsonBody["code"])
}
data := jsonBody["data"].(map[string]interface{})
crunchy.Config.CountryCode = data["country_code"].(string)
user := data["user"]
if user == nil {
return nil, fmt.Errorf("invalid session id, user is not logged in")
}
if user.(map[string]interface{})["premium"] == "" {
crunchy.Config.Premium = false
crunchy.Config.Channel = "-"
} else {
crunchy.Config.Premium = true
crunchy.Config.Channel = "crunchyroll"
}
var etpRt string
for _, cookie := range resp.Cookies() {
if cookie.Name == "etp_rt" {
etpRt = cookie.Value
break
}
}
// token
endpoint = "https://beta-api.crunchyroll.com/auth/v1/token"
grantType := url.Values{}
grantType.Set("grant_type", "etp_rt_cookie")
authRequest, err := http.NewRequest(http.MethodPost, endpoint, bytes.NewBufferString(grantType.Encode()))
if err != nil {
return nil, err
}
authRequest.Header.Add("Authorization", "Basic bm9haWhkZXZtXzZpeWcwYThsMHE6")
authRequest.Header.Add("Content-Type", "application/x-www-form-urlencoded")
authRequest.AddCookie(&http.Cookie{
Name: "session_id",
Value: sessionID,
})
authRequest.AddCookie(&http.Cookie{
Name: "etp_rt",
Value: etpRt,
})
resp, err = client.Do(authRequest)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, fmt.Errorf("failed to parse 'token' response: %w", err)
}
crunchy.Config.TokenType = jsonBody["token_type"].(string)
crunchy.Config.AccessToken = jsonBody["access_token"].(string)
// index
endpoint = "https://beta-api.crunchyroll.com/index/v2"
resp, err = crunchy.request(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, fmt.Errorf("failed to parse 'index' response: %w", err)
}
cms := jsonBody["cms"].(map[string]interface{})
crunchy.Config.Policy = cms["policy"].(string)
crunchy.Config.Signature = cms["signature"].(string)
crunchy.Config.KeyPairID = cms["key_pair_id"].(string)
// me
endpoint = "https://beta-api.crunchyroll.com/accounts/v1/me"
resp, err = crunchy.request(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, fmt.Errorf("failed to parse 'me' response: %w", err)
}
crunchy.Config.AccountID = jsonBody["account_id"].(string)
crunchy.Config.ExternalID = jsonBody["external_id"].(string)
//profile
endpoint = "https://beta-api.crunchyroll.com/accounts/v1/me/profile"
resp, err = crunchy.request(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, fmt.Errorf("failed to parse 'profile' response: %w", err)
}
crunchy.Config.MaturityRating = jsonBody["maturity_rating"].(string)
return crunchy, nil
}
// request is a base function which handles api requests.
func (c *Crunchyroll) request(endpoint string) (*http.Response, error) {
req, err := http.NewRequest(http.MethodGet, endpoint, nil)
if err != nil {
return nil, err
}
req.Header.Add("Authorization", fmt.Sprintf("%s %s", c.Config.TokenType, c.Config.AccessToken))
resp, err := c.Client.Do(req)
if err == nil {
defer resp.Body.Close()
bodyAsBytes, _ := io.ReadAll(resp.Body)
defer resp.Body.Close()
if resp.StatusCode == http.StatusUnauthorized {
return nil, fmt.Errorf("invalid access token")
} else {
var errStruct struct {
Message string `json:"message"`
}
json.NewDecoder(bytes.NewBuffer(bodyAsBytes)).Decode(&errStruct)
if errStruct.Message != "" {
return nil, fmt.Errorf(errStruct.Message)
}
}
resp.Body = io.NopCloser(bytes.NewBuffer(bodyAsBytes))
}
return resp, err
}
// IsCaching returns if data gets cached or not.
// See SetCaching for more information.
func (c *Crunchyroll) IsCaching() bool {
return c.cache
}
// SetCaching enables or disables internal caching of requests made.
// Caching is enabled by default.
// If it is disabled the already cached data still gets called.
// The best way to prevent this is to create a complete new Crunchyroll struct.
func (c *Crunchyroll) SetCaching(caching bool) {
c.cache = caching
}
// Search searches a query and returns all found series and movies within the given limit.
func (c *Crunchyroll) Search(query string, limit uint) (s []*Series, m []*Movie, err error) {
searchEndpoint := fmt.Sprintf("https://beta-api.crunchyroll.com/content/v1/search?q=%s&n=%d&type=&locale=%s",
query, limit, c.Locale)
resp, err := c.request(searchEndpoint)
if err != nil {
return nil, nil, err
}
defer resp.Body.Close()
var jsonBody map[string]interface{}
if err = json.NewDecoder(resp.Body).Decode(&jsonBody); err != nil {
return nil, nil, fmt.Errorf("failed to parse 'search' response: %w", err)
}
for _, item := range jsonBody["items"].([]interface{}) {
item := item.(map[string]interface{})
if item["total"].(float64) > 0 {
switch item["type"] {
case "series":
for _, series := range item["items"].([]interface{}) {
series2 := &Series{
crunchy: c,
}
if err := decodeMapToStruct(series, series2); err != nil {
return nil, nil, err
}
if err := decodeMapToStruct(series.(map[string]interface{})["series_metadata"].(map[string]interface{}), series2); err != nil {
return nil, nil, err
}
s = append(s, series2)
}
case "movie_listing":
for _, movie := range item["items"].([]interface{}) {
movie2 := &Movie{
crunchy: c,
}
if err := decodeMapToStruct(movie, movie2); err != nil {
return nil, nil, err
}
m = append(m, movie2)
}
}
}
}
return s, m, nil
}
// FindVideoByName finds a Video (Season or Movie) by its name.
// Use this in combination with ParseVideoURL and hand over the corresponding results
// to this function.
//
// Deprecated: Use Search instead. The first result sometimes isn't the correct one
// so this function is inaccurate in some cases.
// See https://github.com/ByteDream/crunchyroll-go/issues/22 for more information.
func (c *Crunchyroll) FindVideoByName(seriesName string) (Video, error) {
s, m, err := c.Search(seriesName, 1)
if err != nil {
return nil, err
}
if len(s) > 0 {
return s[0], nil
} else if len(m) > 0 {
return m[0], nil
}
return nil, fmt.Errorf("no series or movie could be found")
}
// FindEpisodeByName finds an episode by its crunchyroll series name and episode title.
// Use this in combination with ParseEpisodeURL and hand over the corresponding results
// to this function.
func (c *Crunchyroll) FindEpisodeByName(seriesName, episodeTitle string) ([]*Episode, error) {
series, _, err := c.Search(seriesName, 5)
if err != nil {
return nil, err
}
var matchingEpisodes []*Episode
for _, s := range series {
seasons, err := s.Seasons()
if err != nil {
return nil, err
}
for _, season := range seasons {
episodes, err := season.Episodes()
if err != nil {
return nil, err
}
for _, episode := range episodes {
if episode.SlugTitle == episodeTitle {
matchingEpisodes = append(matchingEpisodes, episode)
}
}
}
}
return matchingEpisodes, nil
}
// ParseVideoURL tries to extract the crunchyroll series / movie name out of the given url.
//
// Deprecated: Crunchyroll classic urls are sometimes not safe to use, use ParseBetaSeriesURL
// if possible since beta url are always safe to use.
// The method will stay in the library until only beta urls are supported by crunchyroll itself.
func ParseVideoURL(url string) (seriesName string, ok bool) {
pattern := regexp.MustCompile(`(?m)^https?://(www\.)?crunchyroll\.com(/\w{2}(-\w{2})?)?/(?P<series>[^/]+)(/videos)?/?$`)
if urlMatch := pattern.FindAllStringSubmatch(url, -1); len(urlMatch) != 0 {
groups := regexGroups(urlMatch, pattern.SubexpNames()...)
seriesName = groups["series"]
if seriesName != "" {
ok = true
}
}
return
}
// ParseEpisodeURL tries to extract the crunchyroll series name, title, episode number and web id out of the given crunchyroll url
// Note that the episode number can be misleading. For example if an episode has the episode number 23.5 (slime isekai)
// the episode number will be 235.
//
// Deprecated: Crunchyroll classic urls are sometimes not safe to use, use ParseBetaEpisodeURL
// if possible since beta url are always safe to use.
// The method will stay in the library until only beta urls are supported by crunchyroll itself.
func ParseEpisodeURL(url string) (seriesName, title string, episodeNumber int, webId int, ok bool) {
pattern := regexp.MustCompile(`(?m)^https?://(www\.)?crunchyroll\.com(/\w{2}(-\w{2})?)?/(?P<series>[^/]+)/episode-(?P<number>\d+)-(?P<title>.+)-(?P<webId>\d+).*`)
if urlMatch := pattern.FindAllStringSubmatch(url, -1); len(urlMatch) != 0 {
groups := regexGroups(urlMatch, pattern.SubexpNames()...)
seriesName = groups["series"]
episodeNumber, _ = strconv.Atoi(groups["number"])
title = groups["title"]
webId, _ = strconv.Atoi(groups["webId"])
if seriesName != "" && title != "" && webId != 0 {
ok = true
}
}
return
}
// ParseBetaSeriesURL tries to extract the season id of the given crunchyroll beta url, pointing to a season.
func ParseBetaSeriesURL(url string) (seasonId string, ok bool) {
pattern := regexp.MustCompile(`(?m)^https?://(www\.)?beta\.crunchyroll\.com/(\w{2}/)?series/(?P<seasonId>\w+).*`)
if urlMatch := pattern.FindAllStringSubmatch(url, -1); len(urlMatch) != 0 {
groups := regexGroups(urlMatch, pattern.SubexpNames()...)
seasonId = groups["seasonId"]
ok = true
}
return
}
// ParseBetaEpisodeURL tries to extract the episode id of the given crunchyroll beta url, pointing to an episode.
func ParseBetaEpisodeURL(url string) (episodeId string, ok bool) {
pattern := regexp.MustCompile(`(?m)^https?://(www\.)?beta\.crunchyroll\.com/(\w{2}/)?watch/(?P<episodeId>\w+).*`)
if urlMatch := pattern.FindAllStringSubmatch(url, -1); len(urlMatch) != 0 {
groups := regexGroups(urlMatch, pattern.SubexpNames()...)
episodeId = groups["episodeId"]
ok = true
}
return
}