310 lines
8.9 KiB
Go
310 lines
8.9 KiB
Go
package anime
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import (
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"cmp"
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"context"
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"fmt"
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"seanime/internal/api/anilist"
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"seanime/internal/api/metadata"
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"seanime/internal/hook"
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"seanime/internal/platforms/platform"
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"seanime/internal/util/result"
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"slices"
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"time"
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"github.com/rs/zerolog"
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"github.com/samber/lo"
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)
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var episodeCollectionCache = result.NewBoundedCache[int, *EpisodeCollection](10)
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var EpisodeCollectionFromLocalFilesCache = result.NewBoundedCache[int, *EpisodeCollection](10)
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type (
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// EpisodeCollection represents a collection of episodes.
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EpisodeCollection struct {
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HasMappingError bool `json:"hasMappingError"`
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Episodes []*Episode `json:"episodes"`
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Metadata *metadata.AnimeMetadata `json:"metadata"`
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}
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)
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type NewEpisodeCollectionOptions struct {
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// AnimeMetadata can be nil, if not provided, it will be fetched from the metadata provider.
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AnimeMetadata *metadata.AnimeMetadata
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Media *anilist.BaseAnime
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MetadataProvider metadata.Provider
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Logger *zerolog.Logger
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}
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// NewEpisodeCollection creates a new episode collection by leveraging EntryDownloadInfo.
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// The returned EpisodeCollection is cached for 6 hours.
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//
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// AnimeMetadata is optional, if not provided, it will be fetched from the metadata provider.
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//
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// Note: This is used by Torrent and Debrid streaming
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func NewEpisodeCollection(opts NewEpisodeCollectionOptions) (ec *EpisodeCollection, err error) {
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if opts.Logger == nil {
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opts.Logger = lo.ToPtr(zerolog.Nop())
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}
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if opts.Media == nil {
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return nil, fmt.Errorf("cannont create episode collectiom, media is nil")
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}
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if opts.MetadataProvider == nil {
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return nil, fmt.Errorf("cannot create episode collection, metadata provider is nil")
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}
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if ec, ok := episodeCollectionCache.Get(opts.Media.ID); ok {
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opts.Logger.Debug().Msg("torrentstream: Using cached episode collection")
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return ec, nil
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}
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if opts.AnimeMetadata == nil {
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// Fetch the metadata
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opts.AnimeMetadata, err = opts.MetadataProvider.GetAnimeMetadata(metadata.AnilistPlatform, opts.Media.ID)
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if err != nil {
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opts.AnimeMetadata = &metadata.AnimeMetadata{
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Titles: make(map[string]string),
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Episodes: make(map[string]*metadata.EpisodeMetadata),
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EpisodeCount: 0,
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SpecialCount: 0,
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Mappings: &metadata.AnimeMappings{
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AnilistId: opts.Media.GetID(),
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},
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}
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opts.AnimeMetadata.Titles["en"] = opts.Media.GetTitleSafe()
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opts.AnimeMetadata.Titles["x-jat"] = opts.Media.GetRomajiTitleSafe()
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err = nil
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}
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}
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reqEvent := &AnimeEpisodeCollectionRequestedEvent{
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Media: opts.Media,
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Metadata: opts.AnimeMetadata,
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EpisodeCollection: &EpisodeCollection{},
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}
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err = hook.GlobalHookManager.OnAnimEpisodeCollectionRequested().Trigger(reqEvent)
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if err != nil {
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return nil, err
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}
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opts.Media = reqEvent.Media
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opts.AnimeMetadata = reqEvent.Metadata
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if reqEvent.DefaultPrevented {
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return reqEvent.EpisodeCollection, nil
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}
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ec = &EpisodeCollection{
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HasMappingError: false,
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Episodes: make([]*Episode, 0),
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Metadata: opts.AnimeMetadata,
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}
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// +---------------------+
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// | Download Info |
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// +---------------------+
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info, err := NewEntryDownloadInfo(&NewEntryDownloadInfoOptions{
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LocalFiles: nil,
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AnimeMetadata: opts.AnimeMetadata,
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Progress: lo.ToPtr(0), // Progress is 0 because we want the entire list
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Status: lo.ToPtr(anilist.MediaListStatusCurrent),
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Media: opts.Media,
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MetadataProvider: opts.MetadataProvider,
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})
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if err != nil {
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opts.Logger.Error().Err(err).Msg("torrentstream: could not get media entry info")
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return nil, err
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}
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// As of v2.8.0, this should never happen, getMediaInfo always returns an anime metadata struct, even if it's not found
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// causing NewEntryDownloadInfo to return a valid list of episodes to download
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if info == nil || info.EpisodesToDownload == nil {
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opts.Logger.Debug().Msg("torrentstream: no episodes found from AniDB, using AniList")
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for epIdx := range opts.Media.GetCurrentEpisodeCount() {
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episodeNumber := epIdx + 1
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mediaWrapper := opts.MetadataProvider.GetAnimeMetadataWrapper(opts.Media, nil)
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episodeMetadata := mediaWrapper.GetEpisodeMetadata(episodeNumber)
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episode := &Episode{
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Type: LocalFileTypeMain,
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DisplayTitle: fmt.Sprintf("Episode %d", episodeNumber),
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EpisodeTitle: opts.Media.GetPreferredTitle(),
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EpisodeNumber: episodeNumber,
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AniDBEpisode: fmt.Sprintf("%d", episodeNumber),
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AbsoluteEpisodeNumber: episodeNumber,
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ProgressNumber: episodeNumber,
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LocalFile: nil,
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IsDownloaded: false,
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EpisodeMetadata: &EpisodeMetadata{
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AnidbId: 0,
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Image: episodeMetadata.Image,
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AirDate: "",
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Length: 0,
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Summary: "",
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Overview: "",
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IsFiller: false,
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},
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FileMetadata: nil,
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IsInvalid: false,
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MetadataIssue: "",
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BaseAnime: opts.Media,
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}
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ec.Episodes = append(ec.Episodes, episode)
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}
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ec.HasMappingError = true
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return
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}
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if len(info.EpisodesToDownload) == 0 {
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opts.Logger.Error().Msg("torrentstream: no episodes found")
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return nil, fmt.Errorf("no episodes found")
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}
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ec.Episodes = lo.Map(info.EpisodesToDownload, func(episode *EntryDownloadEpisode, i int) *Episode {
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return episode.Episode
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})
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slices.SortStableFunc(ec.Episodes, func(i, j *Episode) int {
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return cmp.Compare(i.EpisodeNumber, j.EpisodeNumber)
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})
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event := &AnimeEpisodeCollectionEvent{
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EpisodeCollection: ec,
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}
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err = hook.GlobalHookManager.OnAnimeEpisodeCollection().Trigger(event)
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if err != nil {
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return nil, err
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}
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ec = event.EpisodeCollection
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episodeCollectionCache.SetT(opts.Media.ID, ec, time.Minute*10)
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return
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}
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func ClearEpisodeCollectionCache() {
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episodeCollectionCache.Clear()
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}
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/////////
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type NewEpisodeCollectionFromLocalFilesOptions struct {
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LocalFiles []*LocalFile
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Media *anilist.BaseAnime
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AnimeCollection *anilist.AnimeCollection
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Platform platform.Platform
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MetadataProvider metadata.Provider
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Logger *zerolog.Logger
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}
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func NewEpisodeCollectionFromLocalFiles(ctx context.Context, opts NewEpisodeCollectionFromLocalFilesOptions) (*EpisodeCollection, error) {
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if opts.Logger == nil {
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opts.Logger = lo.ToPtr(zerolog.Nop())
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}
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if ec, ok := EpisodeCollectionFromLocalFilesCache.Get(opts.Media.GetID()); ok {
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return ec, nil
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}
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// Make sure to keep the local files from the media only
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opts.LocalFiles = lo.Filter(opts.LocalFiles, func(lf *LocalFile, i int) bool {
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return lf.MediaId == opts.Media.GetID()
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})
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// Create a new media entry
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entry, err := NewEntry(ctx, &NewEntryOptions{
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MediaId: opts.Media.GetID(),
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LocalFiles: opts.LocalFiles,
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AnimeCollection: opts.AnimeCollection,
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Platform: opts.Platform,
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MetadataProvider: opts.MetadataProvider,
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})
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if err != nil {
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return nil, fmt.Errorf("cannot play local file, could not create entry: %w", err)
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}
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// Should be cached if it exists
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animeMetadata, err := opts.MetadataProvider.GetAnimeMetadata(metadata.AnilistPlatform, opts.Media.ID)
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if err != nil {
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animeMetadata = &metadata.AnimeMetadata{
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Titles: make(map[string]string),
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Episodes: make(map[string]*metadata.EpisodeMetadata),
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EpisodeCount: 0,
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SpecialCount: 0,
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Mappings: &metadata.AnimeMappings{
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AnilistId: opts.Media.GetID(),
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},
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}
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animeMetadata.Titles["en"] = opts.Media.GetTitleSafe()
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animeMetadata.Titles["x-jat"] = opts.Media.GetRomajiTitleSafe()
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err = nil
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}
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ec := &EpisodeCollection{
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HasMappingError: false,
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Episodes: entry.Episodes,
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Metadata: animeMetadata,
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}
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EpisodeCollectionFromLocalFilesCache.SetT(opts.Media.GetID(), ec, time.Hour*6)
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return ec, nil
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}
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/////////
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func (ec *EpisodeCollection) FindEpisodeByNumber(episodeNumber int) (*Episode, bool) {
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for _, episode := range ec.Episodes {
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if episode.EpisodeNumber == episodeNumber {
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return episode, true
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}
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}
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return nil, false
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}
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func (ec *EpisodeCollection) FindEpisodeByAniDB(anidbEpisode string) (*Episode, bool) {
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for _, episode := range ec.Episodes {
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if episode.AniDBEpisode == anidbEpisode {
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return episode, true
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}
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}
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return nil, false
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}
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// GetMainLocalFiles returns the *main* local files.
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func (ec *EpisodeCollection) GetMainLocalFiles() ([]*Episode, bool) {
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ret := make([]*Episode, 0)
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for _, episode := range ec.Episodes {
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if episode.LocalFile == nil || episode.LocalFile.IsMain() {
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ret = append(ret, episode)
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}
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}
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if len(ret) == 0 {
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return nil, false
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}
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return ret, true
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}
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// FindNextEpisode returns the *main* local file whose episode number is after the given local file.
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func (ec *EpisodeCollection) FindNextEpisode(current *Episode) (*Episode, bool) {
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episodes, ok := ec.GetMainLocalFiles()
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if !ok {
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return nil, false
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}
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// Get the local file whose episode number is after the given local file
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var next *Episode
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for _, e := range episodes {
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if e.GetEpisodeNumber() == current.GetEpisodeNumber()+1 {
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next = e
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break
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}
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}
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if next == nil {
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return nil, false
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}
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return next, true
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}
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