234 lines
6.9 KiB
Go
234 lines
6.9 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"os/exec"
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"time"
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"github.com/layeh/gumble/gumble"
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"github.com/layeh/gumble/gumble_ffmpeg"
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)
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// YouTubeSong implements the Song interface
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type YouTubeSong struct {
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id string
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title string
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thumbnail string
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submitter *gumble.User
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duration string
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url string
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offset int
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format string
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playlist Playlist
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skippers []string
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dontSkip bool
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}
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// YouTubePlaylist implements the Playlist interface
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type YouTubePlaylist struct {
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id string
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title string
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}
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// ------------
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// YOUTUBE SONG
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// ------------
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// Download downloads the song via youtube-dl if it does not already exist on disk.
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// All downloaded songs are stored in ~/.mumbledj/songs and should be automatically cleaned.
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func (dl *YouTubeSong) Download() error {
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// Checks to see if song is already downloaded
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if _, err := os.Stat(fmt.Sprintf("%s/.mumbledj/songs/%s", dj.homeDir, dl.Filename())); os.IsNotExist(err) {
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cmd := exec.Command("youtube-dl", "--no-mtime", "--output", fmt.Sprintf("%s/.mumbledj/songs/%s", dj.homeDir, dl.Filename()), "--format", dl.format, "--prefer-ffmpeg", dl.url)
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output, err := cmd.CombinedOutput()
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if err == nil {
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if dj.conf.Cache.Enabled {
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dj.cache.CheckMaximumDirectorySize()
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}
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return nil
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} else {
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args := ""
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for s := range cmd.Args {
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args += cmd.Args[s] + " "
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}
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fmt.Printf(args + "\n" + string(output) + "\n" + "youtube-dl: " + err.Error() + "\n")
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return errors.New("Song download failed.")
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}
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}
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return nil
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}
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// Play plays the song. Once the song is playing, a notification is displayed in a text message that features the song
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// thumbnail, URL, title, duration, and submitter.
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func (dl *YouTubeSong) Play() {
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if dl.offset != 0 {
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offsetDuration, _ := time.ParseDuration(fmt.Sprintf("%ds", dl.offset))
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dj.audioStream.Offset = offsetDuration
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}
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dj.audioStream.Source = gumble_ffmpeg.SourceFile(fmt.Sprintf("%s/.mumbledj/songs/%s", dj.homeDir, dl.Filename()))
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if err := dj.audioStream.Play(); err != nil {
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panic(err)
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} else {
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message := `<table><tr><td align="center"><img src="%s" width=150 /></td></tr><tr><td align="center"><b><a href="%s">%s</a> (%s)</b></td></tr><tr><td align="center">Added by %s</td></tr>`
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message = fmt.Sprintf(message, dl.thumbnail, dl.url, dl.title, dl.duration, dl.submitter.Name)
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if !isNil(dl.playlist) {
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message = fmt.Sprintf(message+`<tr><td align="center">From playlist "%s"</td></tr>`, dl.playlist.Title())
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}
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dj.client.Self.Channel.Send(message+`</table>`, false)
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go func() {
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dj.audioStream.Wait()
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dj.queue.OnSongFinished()
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}()
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}
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}
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// Delete deletes the song from ~/.mumbledj/songs if the cache is disabled.
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func (dl *YouTubeSong) Delete() error {
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if dj.conf.Cache.Enabled == false {
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filePath := fmt.Sprintf("%s/.mumbledj/songs/%s", dj.homeDir, dl.Filename())
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if _, err := os.Stat(filePath); err == nil {
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if err := os.Remove(filePath); err == nil {
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return nil
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}
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return errors.New("Error occurred while deleting audio file.")
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}
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return nil
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}
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return nil
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}
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// AddSkip adds a skip to the skippers slice. If the user is already in the slice, AddSkip
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// returns an error and does not add a duplicate skip.
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func (dl *YouTubeSong) AddSkip(username string) error {
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for _, user := range dl.skippers {
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if username == user {
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return errors.New("This user has already skipped the current song.")
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}
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}
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dl.skippers = append(dl.skippers, username)
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return nil
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}
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// RemoveSkip removes a skip from the skippers slice. If username is not in slice, an error is
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// returned.
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func (dl *YouTubeSong) RemoveSkip(username string) error {
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for i, user := range dl.skippers {
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if username == user {
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dl.skippers = append(dl.skippers[:i], dl.skippers[i+1:]...)
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return nil
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}
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}
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return errors.New("This user has not skipped the song.")
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}
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// SkipReached calculates the current skip ratio based on the number of users within MumbleDJ's
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// channel and the number of usernames in the skippers slice. If the value is greater than or equal
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// to the skip ratio defined in the config, the function returns true, and returns false otherwise.
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func (dl *YouTubeSong) SkipReached(channelUsers int) bool {
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if float32(len(dl.skippers))/float32(channelUsers) >= dj.conf.General.SkipRatio {
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return true
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}
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return false
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}
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// Submitter returns the name of the submitter of the Song.
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func (dl *YouTubeSong) Submitter() string {
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return dl.submitter.Name
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}
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// Title returns the title of the Song.
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func (dl *YouTubeSong) Title() string {
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return dl.title
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}
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// ID returns the id of the Song.
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func (dl *YouTubeSong) ID() string {
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return dl.id
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}
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// Filename returns the filename of the Song.
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func (dl *YouTubeSong) Filename() string {
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return dl.id + dl.format
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}
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// Duration returns the duration of the Song.
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func (dl *YouTubeSong) Duration() string {
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return dl.duration
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}
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// Thumbnail returns the thumbnail URL for the Song.
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func (dl *YouTubeSong) Thumbnail() string {
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return dl.thumbnail
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}
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// Playlist returns the playlist type for the Song (may be nil).
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func (dl *YouTubeSong) Playlist() Playlist {
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return dl.playlist
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}
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// DontSkip returns the DontSkip boolean value for the Song.
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func (dl *YouTubeSong) DontSkip() bool {
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return dl.dontSkip
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}
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// SetDontSkip sets the DontSkip boolean value for the Song.
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func (dl *YouTubeSong) SetDontSkip(value bool) {
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dl.dontSkip = value
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}
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// ----------------
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// YOUTUBE PLAYLIST
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// ----------------
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// AddSkip adds a skip to the playlist's skippers slice.
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func (p *YouTubePlaylist) AddSkip(username string) error {
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for _, user := range dj.playlistSkips[p.ID()] {
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if username == user {
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return errors.New("This user has already skipped the current song.")
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}
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}
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dj.playlistSkips[p.ID()] = append(dj.playlistSkips[p.ID()], username)
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return nil
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}
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// RemoveSkip removes a skip from the playlist's skippers slice. If username is not in the slice
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// an error is returned.
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func (p *YouTubePlaylist) RemoveSkip(username string) error {
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for i, user := range dj.playlistSkips[p.ID()] {
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if username == user {
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dj.playlistSkips[p.ID()] = append(dj.playlistSkips[p.ID()][:i], dj.playlistSkips[p.ID()][i+1:]...)
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return nil
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}
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}
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return errors.New("This user has not skipped the song.")
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}
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// DeleteSkippers removes the skippers entry in dj.playlistSkips.
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func (p *YouTubePlaylist) DeleteSkippers() {
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delete(dj.playlistSkips, p.ID())
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}
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// SkipReached calculates the current skip ratio based on the number of users within MumbleDJ's
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// channel and the number of usernames in the skippers slice. If the value is greater than or equal
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// to the skip ratio defined in the config, the function returns true, and returns false otherwise.
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func (p *YouTubePlaylist) SkipReached(channelUsers int) bool {
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if float32(len(dj.playlistSkips[p.ID()]))/float32(channelUsers) >= dj.conf.General.PlaylistSkipRatio {
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return true
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}
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return false
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}
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// ID returns the id of the YouTubePlaylist.
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func (p *YouTubePlaylist) ID() string {
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return p.id
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}
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// Title returns the title of the YouTubePlaylist.
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func (p *YouTubePlaylist) Title() string {
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return p.title
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}
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