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2019-06-03 09:32:43 +00:00
package arn
import (
"errors"
"os"
"os/exec"
"path"
"sort"
"strings"
"github.com/aerogo/nano"
"github.com/akyoto/color"
"github.com/animenotifier/notify.moe/arn/autocorrect"
)
// SoundTrack is a soundtrack used in one or multiple anime.
type SoundTrack struct {
Title SoundTrackTitle `json:"title" editable:"true"`
Media []*ExternalMedia `json:"media" editable:"true"`
Links []*Link `json:"links" editable:"true"`
Lyrics SoundTrackLyrics `json:"lyrics" editable:"true"`
Tags []string `json:"tags" editable:"true" tooltip:"<ul><li><strong>anime:ID</strong> to connect it with anime (e.g. anime:yF1RhKiiR)</li><li><strong>opening</strong> for openings</li><li><strong>ending</strong> for endings</li><li><strong>op:NUMBER</strong> or <strong>ed:NUMBER</strong> if it has more than one OP/ED (e.g. op:2 or ed:3)</li><li><strong>cover</strong> for covers</li><li><strong>remix</strong> for remixes</li><li><strong>male</strong> or <strong>female</strong></li><li><strong title='Has lyrics'>vocal</strong>, <strong title='Has orchestral instruments, mostly no lyrics'>orchestral</strong> or <strong title='Has a mix of different instruments, mostly no lyrics'>instrumental</strong></li></ul>"`
File string `json:"file"`
hasID
hasPosts
hasCreator
hasEditor
hasLikes
hasDraft
}
// Link returns the permalink for the track.
func (track *SoundTrack) Link() string {
return "/soundtrack/" + track.ID
}
// TitleByUser returns the preferred title for the given user.
func (track *SoundTrack) TitleByUser(user *User) string {
return track.Title.ByUser(user)
}
// MediaByService returns a slice of all media by the given service.
func (track *SoundTrack) MediaByService(service string) []*ExternalMedia {
filtered := []*ExternalMedia{}
for _, media := range track.Media {
if media.Service == service {
filtered = append(filtered, media)
}
}
return filtered
}
// HasMediaByService returns true if the track has media by the given service.
func (track *SoundTrack) HasMediaByService(service string) bool {
for _, media := range track.Media {
if media.Service == service {
return true
}
}
return false
}
// HasTag returns true if it contains the given tag.
func (track *SoundTrack) HasTag(search string) bool {
for _, tag := range track.Tags {
if tag == search {
return true
}
}
return false
}
// HasLyrics returns true if the track has lyrics in any language.
func (track *SoundTrack) HasLyrics() bool {
return track.Lyrics.Native != "" || track.Lyrics.Romaji != ""
}
// Anime fetches all tagged anime of the sound track.
func (track *SoundTrack) Anime() []*Anime {
var animeList []*Anime
for _, tag := range track.Tags {
if strings.HasPrefix(tag, "anime:") {
animeID := strings.TrimPrefix(tag, "anime:")
anime, err := GetAnime(animeID)
if err != nil {
if !track.IsDraft {
color.Red("Error fetching anime: %v", err)
}
continue
}
animeList = append(animeList, anime)
}
}
return animeList
}
// OsuBeatmaps returns all osu beatmap IDs of the sound track.
func (track *SoundTrack) OsuBeatmaps() []string {
return FilterIDTags(track.Tags, "osu-beatmap")
}
// EtternaBeatmaps returns all Etterna song IDs of the sound track.
func (track *SoundTrack) EtternaBeatmaps() []string {
return FilterIDTags(track.Tags, "etterna")
}
// MainAnime ...
func (track *SoundTrack) MainAnime() *Anime {
allAnime := track.Anime()
if len(allAnime) == 0 {
return nil
}
return allAnime[0]
}
// TypeName returns the type name.
func (track *SoundTrack) TypeName() string {
return "SoundTrack"
}
// Self returns the object itself.
func (track *SoundTrack) Self() Loggable {
return track
}
// EditedByUser returns the user who edited this track last.
func (track *SoundTrack) EditedByUser() *User {
user, _ := GetUser(track.EditedBy)
return user
}
// OnLike is called when the soundtrack receives a like.
func (track *SoundTrack) OnLike(likedBy *User) {
if likedBy.ID == track.CreatedBy {
return
}
if !track.Creator().Settings().Notification.SoundTrackLikes {
return
}
go func() {
track.Creator().SendNotification(&PushNotification{
Title: likedBy.Nick + " liked your soundtrack " + track.Title.ByUser(track.Creator()),
Message: likedBy.Nick + " liked your soundtrack " + track.Title.ByUser(track.Creator()) + ".",
Icon: "https:" + likedBy.AvatarLink("large"),
Link: "https://notify.moe" + likedBy.Link(),
Type: NotificationTypeLike,
})
}()
}
// Publish ...
func (track *SoundTrack) Publish() error {
// No media added
if len(track.Media) == 0 {
return errors.New("No media specified (at least 1 media source is required)")
}
animeFound := false
for _, tag := range track.Tags {
tag = autocorrect.Tag(tag)
if strings.HasPrefix(tag, "anime:") {
animeID := strings.TrimPrefix(tag, "anime:")
_, err := GetAnime(animeID)
if err != nil {
return errors.New("Invalid anime ID")
}
animeFound = true
}
}
// No anime found
if !animeFound {
return errors.New("Need to specify at least one anime")
}
// No tags
if len(track.Tags) < 1 {
return errors.New("Need to specify at least one tag")
}
// Publish
err := publish(track)
if err != nil {
return err
}
// Start download in the background
go func() {
err := track.Download()
if err == nil {
track.Save()
}
}()
return nil
}
// Unpublish ...
func (track *SoundTrack) Unpublish() error {
draftIndex, err := GetDraftIndex(track.CreatedBy)
if err != nil {
return err
}
if draftIndex.SoundTrackID != "" {
return errors.New("You still have an unfinished draft")
}
track.IsDraft = true
draftIndex.SoundTrackID = track.ID
draftIndex.Save()
return nil
}
// Download downloads the track.
func (track *SoundTrack) Download() error {
if track.IsDraft {
return errors.New("Track is a draft")
}
youtubeVideos := track.MediaByService("Youtube")
if len(youtubeVideos) == 0 {
return errors.New("No Youtube ID")
}
youtubeID := youtubeVideos[0].ServiceID
// Check for existing file
if track.File != "" {
stat, err := os.Stat(path.Join(Root, "audio", track.File))
if err == nil && !stat.IsDir() && stat.Size() > 0 {
return errors.New("Already downloaded")
}
}
audioDirectory := path.Join(Root, "audio")
baseName := track.ID + "|" + youtubeID
// Check if it exists on the file system
fullPath := FindFileWithExtension(baseName, audioDirectory, []string{
".opus",
".webm",
".ogg",
".m4a",
".mp3",
".flac",
".wav",
})
// In case we added the file but didn't register it in database
if fullPath != "" {
extension := path.Ext(fullPath)
track.File = baseName + extension
return nil
}
filePath := path.Join(audioDirectory, baseName)
// Use full URL to avoid problems with Youtube IDs that start with a hyphen
url := "https://youtube.com/watch?v=" + youtubeID
// Download
cmd := exec.Command(
"youtube-dl",
"--no-check-certificate",
"--extract-audio",
"--audio-quality", "0",
"--output", filePath+".%(ext)s",
url,
)
err := cmd.Start()
if err != nil {
return err
}
err = cmd.Wait()
if err != nil {
return err
}
// Find downloaded file
fullPath = FindFileWithExtension(baseName, audioDirectory, []string{
".opus",
".webm",
".ogg",
".m4a",
".mp3",
".flac",
".wav",
})
extension := path.Ext(fullPath)
track.File = baseName + extension
return nil
}
// String implements the default string serialization.
func (track *SoundTrack) String() string {
return track.Title.ByUser(nil)
}
// SortSoundTracksLatestFirst ...
func SortSoundTracksLatestFirst(tracks []*SoundTrack) {
sort.Slice(tracks, func(i, j int) bool {
return tracks[i].Created > tracks[j].Created
})
}
// SortSoundTracksPopularFirst ...
func SortSoundTracksPopularFirst(tracks []*SoundTrack) {
sort.Slice(tracks, func(i, j int) bool {
aLikes := len(tracks[i].Likes)
bLikes := len(tracks[j].Likes)
if aLikes == bLikes {
return tracks[i].Created > tracks[j].Created
}
return aLikes > bLikes
})
}
// GetSoundTrack ...
func GetSoundTrack(id string) (*SoundTrack, error) {
track, err := DB.Get("SoundTrack", id)
if err != nil {
return nil, err
}
return track.(*SoundTrack), nil
}
// StreamSoundTracks returns a stream of all soundtracks.
func StreamSoundTracks() <-chan *SoundTrack {
channel := make(chan *SoundTrack, nano.ChannelBufferSize)
go func() {
for obj := range DB.All("SoundTrack") {
channel <- obj.(*SoundTrack)
}
close(channel)
}()
return channel
}
// AllSoundTracks ...
func AllSoundTracks() []*SoundTrack {
all := make([]*SoundTrack, 0, DB.Collection("SoundTrack").Count())
for obj := range StreamSoundTracks() {
all = append(all, obj)
}
return all
}
// FilterSoundTracks filters all soundtracks by a custom function.
func FilterSoundTracks(filter func(*SoundTrack) bool) []*SoundTrack {
var filtered []*SoundTrack
for obj := range StreamSoundTracks() {
if filter(obj) {
filtered = append(filtered, obj)
}
}
return filtered
}