// CheckAPIKey performs a test API call with the API key
// provided in the configuration file to determine if the
// service should be enabled.
func (yt *YouTube) CheckAPIKey() error {
var (
response *http.Response
v *jason.Object
err error
)
if viper.GetString("api_keys.youtube") == "" {
return errors.New("No YouTube API key has been provided")
}
url := "https://www.googleapis.com/youtube/v3/videos?part=snippet&id=KQY9zrjPBjo&key=%s"
response, err = http.Get(fmt.Sprintf(url, viper.GetString("api_keys.youtube")))
defer response.Body.Close()
if err != nil {
return err
}
if v, err = jason.NewObjectFromReader(response.Body); err != nil {
return err
}
if v, err = v.GetObject("error"); err == nil {
message, _ := v.GetString("message")
code, _ := v.GetInt64("code")
errArray, _ := v.GetObjectArray("errors")
reason, _ := errArray[0].GetString("reason")
return fmt.Errorf("%d: %s (reason: %s)", code, message, reason)
}
return nil
}
// Internal helper function to get a string from a jason.Object
func jasonGetString(o *jason.Object, key string) string {
if o == nil || key == "" {
return ""
}
v, _ := o.GetString(key)
return v
}
// GetTracks uses the passed URL to find and return
// tracks associated with the URL. An error is returned
// if any error occurs during the API call.
func (sc *SoundCloud) GetTracks(url string, submitter *gumble.User) ([]interfaces.Track, error) {
var (
apiURL string
err error
resp *http.Response
v *jason.Object
track bot.Track
tracks []interfaces.Track
)
urlSplit := strings.Split(url, "#t=")
apiURL = "http://api.soundcloud.com/resolve?url=%s&client_id=%s"
if sc.isPlaylist(url) {
// Submitter has added a playlist!
resp, err = http.Get(fmt.Sprintf(apiURL, urlSplit[0], viper.GetString("api_keys.soundcloud")))
defer resp.Body.Close()
if err != nil {
return nil, err
}
v, err = jason.NewObjectFromReader(resp.Body)
if err != nil {
return nil, err
}
title, _ := v.GetString("title")
permalink, _ := v.GetString("permalink_url")
playlist := &bot.Playlist{
ID: permalink,
Title: title,
Submitter: submitter.Name,
Service: sc.ReadableName,
}
var scTracks []*jason.Object
scTracks, err = v.GetObjectArray("tracks")
if err != nil {
return nil, err
}
dummyOffset, _ := time.ParseDuration("0s")
for _, t := range scTracks {
track, err = sc.getTrack(t, dummyOffset, submitter)
if err != nil {
// Skip this track.
continue
}
track.Playlist = playlist
tracks = append(tracks, track)
}
if len(tracks) == 0 {
return nil, errors.New("Invalid playlist. No tracks were added")
}
return tracks, nil
}
// Submitter has added a track!
offset := 0
// Calculate track offset if needed
if len(urlSplit) == 2 {
timeSplit := strings.Split(urlSplit[1], ":")
multiplier := 1
for i := len(timeSplit) - 1; i >= 0; i-- {
time, _ := strconv.Atoi(timeSplit[i])
offset += time * multiplier
multiplier *= 60
}
}
playbackOffset, _ := time.ParseDuration(fmt.Sprintf("%ds", offset))
resp, err = http.Get(fmt.Sprintf(apiURL, urlSplit[0], viper.GetString("api_keys.soundcloud")))
defer resp.Body.Close()
if err != nil {
return nil, err
}
v, err = jason.NewObjectFromReader(resp.Body)
if err != nil {
return nil, err
}
track, err = sc.getTrack(v, playbackOffset, submitter)
if err != nil {
return nil, err
}
tracks = append(tracks, track)
return tracks, nil
}
func (sc *SoundCloud) getTrack(obj *jason.Object, offset time.Duration, submitter *gumble.User) (bot.Track, error) {
title, _ := obj.GetString("title")
idInt, _ := obj.GetInt64("id")
id := strconv.FormatInt(idInt, 10)
url, _ := obj.GetString("permalink_url")
author, _ := obj.GetString("user", "username")
authorURL, _ := obj.GetString("user", "permalink_url")
durationMS, _ := obj.GetInt64("duration")
duration, _ := time.ParseDuration(fmt.Sprintf("%dms", durationMS))
thumbnail, err := obj.GetString("artwork_url")
if err != nil {
// Track has no artwork, using profile avatar instead.
thumbnail, _ = obj.GetString("user", "avatar_url")
}
return bot.Track{
ID: id,
URL: url,
Title: title,
Author: author,
AuthorURL: authorURL,
Submitter: submitter.Name,
Service: sc.ReadableName,
Filename: id + ".track",
ThumbnailURL: thumbnail,
Duration: duration,
PlaybackOffset: offset,
Playlist: nil,
}, nil
}
// GetTracks uses the passed URL to find and return
// tracks associated with the URL. An error is returned
// if any error occurs during the API call.
func (mc *Mixcloud) GetTracks(url string, submitter *gumble.User) ([]interfaces.Track, error) {
var (
apiURL string
err error
resp *http.Response
v *jason.Object
tracks []interfaces.Track
)
apiURL = strings.Replace(url, "www", "api", 1)
// Track playback offset is not present in Mixcloud URLs,
// so we can safely assume that users will not request
// a playback offset in the URL.
offset, _ := time.ParseDuration("0s")
resp, err = http.Get(apiURL)
defer resp.Body.Close()
if err != nil {
return nil, err
}
v, err = jason.NewObjectFromReader(resp.Body)
if err != nil {
return nil, err
}
id, _ := v.GetString("slug")
trackURL, _ := v.GetString("url")
title, _ := v.GetString("name")
author, _ := v.GetString("user", "username")
authorURL, _ := v.GetString("user", "url")
durationSecs, _ := v.GetInt64("audio_length")
duration, _ := time.ParseDuration(fmt.Sprintf("%ds", durationSecs))
thumbnail, err := v.GetString("pictures", "large")
if err != nil {
// Track has no artwork, using profile avatar instead.
thumbnail, _ = v.GetString("user", "pictures", "large")
}
track := bot.Track{
ID: id,
URL: trackURL,
Title: title,
Author: author,
AuthorURL: authorURL,
Submitter: submitter.Name,
Service: mc.ReadableName,
ThumbnailURL: thumbnail,
Filename: id + ".track",
Duration: duration,
PlaybackOffset: offset,
Playlist: nil,
}
tracks = append(tracks, track)
return tracks, nil
}
// GetTracks uses the passed URL to find and return
// tracks associated with the URL. An error is returned
// if any error occurs during the API call.
func (yt *YouTube) GetTracks(url string, submitter *gumble.User) ([]interfaces.Track, error) {
var (
playlistURL string
playlistItemsURL string
id string
err error
resp *http.Response
v *jason.Object
track bot.Track
tracks []interfaces.Track
)
dummyOffset, _ := time.ParseDuration("0s")
urlSplit := strings.Split(url, "?t=")
playlistURL = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&id=%s&key=%s"
playlistItemsURL = "https://www.googleapis.com/youtube/v3/playlistItems?part=snippet,contentDetails&playlistId=%s&maxResults=%d&key=%s&pageToken=%s"
id, err = yt.getID(urlSplit[0])
if err != nil {
return nil, err
}
if yt.isPlaylist(url) {
resp, err = http.Get(fmt.Sprintf(playlistURL, id, viper.GetString("api_keys.youtube")))
defer resp.Body.Close()
if err != nil {
return nil, err
}
v, err = jason.NewObjectFromReader(resp.Body)
if err != nil {
return nil, err
}
items, _ := v.GetObjectArray("items")
item := items[0]
title, _ := item.GetString("snippet", "title")
playlist := &bot.Playlist{
ID: id,
Title: title,
Submitter: submitter.Name,
Service: yt.ReadableName,
}
maxItems := math.MaxInt32
if viper.GetInt("queue.max_tracks_per_playlist") > 0 {
maxItems = viper.GetInt("queue.max_tracks_per_playlist")
}
// YouTube playlist searches return a max of 50 results per page
maxResults := 50
if maxResults > maxItems {
maxResults = maxItems
}
pageToken := ""
for len(tracks) < maxItems {
curResp, curErr := http.Get(fmt.Sprintf(playlistItemsURL, id, maxResults, viper.GetString("api_keys.youtube"), pageToken))
defer curResp.Body.Close()
if curErr != nil {
// An error occurred, simply skip this track.
continue
}
v, err = jason.NewObjectFromReader(curResp.Body)
if err != nil {
// An error occurred, simply skip this track.
continue
}
curTracks, _ := v.GetObjectArray("items")
for _, track := range curTracks {
videoID, _ := track.GetString("snippet", "resourceId", "videoId")
// Unfortunately we have to execute another API call for each video as the YouTube API does not
// return video durations from the playlistItems endpoint...
newTrack, _ := yt.getTrack(videoID, submitter, dummyOffset)
newTrack.Playlist = playlist
tracks = append(tracks, newTrack)
if len(tracks) >= maxItems {
break
}
}
pageToken, _ = v.GetString("nextPageToken")
if pageToken == "" {
break
}
}
if len(tracks) == 0 {
return nil, errors.New("Invalid playlist. No tracks were added")
}
return tracks, nil
}
// Submitter added a track!
offset := dummyOffset
if len(urlSplit) == 2 {
offset, _ = time.ParseDuration(urlSplit[1])
}
track, err = yt.getTrack(id, submitter, offset)
if err != nil {
return nil, err
}
tracks = append(tracks, track)
return tracks, nil
}
