103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package internal
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import (
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"encoding/json"
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"errors"
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"log/slog"
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"os/exec"
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"slices"
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"strings"
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"time"
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"github.com/marcopiovanello/yt-dlp-web-ui/v3/server/config"
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)
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type metadata struct {
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Entries []DownloadInfo `json:"entries"`
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Count int `json:"playlist_count"`
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PlaylistTitle string `json:"title"`
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Type string `json:"_type"`
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}
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func PlaylistDetect(req DownloadRequest, mq *MessageQueue, db *MemoryDB) error {
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var (
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downloader = config.Instance().DownloaderPath
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cmd = exec.Command(downloader, req.URL, "--flat-playlist", "-J")
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)
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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return err
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}
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var m metadata
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if err := cmd.Start(); err != nil {
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return err
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}
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slog.Info("decoding playlist metadata", slog.String("url", req.URL))
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if err := json.NewDecoder(stdout).Decode(&m); err != nil {
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return err
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}
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if err := cmd.Wait(); err != nil {
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return err
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}
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slog.Info("decoded playlist metadata", slog.String("url", req.URL))
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if m.Type == "" {
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return errors.New("probably not a valid URL")
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}
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if m.Type == "playlist" {
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entries := slices.CompactFunc(slices.Compact(m.Entries), func(a DownloadInfo, b DownloadInfo) bool {
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return a.URL == b.URL
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})
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slog.Info("playlist detected", slog.String("url", req.URL), slog.Int("count", len(entries)))
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for i, meta := range entries {
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// detect playlist title from metadata since each playlist entry will be
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// treated as an individual download
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req.Rename = strings.Replace(
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req.Rename,
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"%(playlist_title)s",
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m.PlaylistTitle,
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1,
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)
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//XXX: it's idiotic but it works: virtually delay the creation time
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meta.CreatedAt = time.Now().Add(time.Millisecond * time.Duration(i*10))
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proc := &Process{
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Url: meta.URL,
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Progress: DownloadProgress{},
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Output: DownloadOutput{Filename: req.Rename},
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Info: meta,
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Params: req.Params,
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}
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proc.Info.URL = meta.URL
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time.Sleep(time.Millisecond)
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db.Set(proc)
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mq.Publish(proc)
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}
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}
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proc := &Process{
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Url: req.URL,
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Params: req.Params,
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}
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db.Set(proc)
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mq.Publish(proc)
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slog.Info("sending new process to message queue", slog.String("url", proc.Url))
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return cmd.Wait()
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}
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