/
torrent.go
74 lines (61 loc) · 1.72 KB
/
torrent.go
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package torrent
import (
"bytes"
"context"
"fmt"
"time"
"github.com/anacrolix/torrent"
"github.com/anacrolix/torrent/metainfo"
"github.com/c2h5oh/datasize"
"github.com/xackery/starteq/gui"
"github.com/xackery/starteq/slog"
)
type Torrent struct {
}
func (t *Torrent) Download(ctx context.Context, torrentData []byte) error {
cfg := torrent.NewDefaultClientConfig()
cfg.DataDir = "."
cfg.Debug = false
cfg.Seed = false
torrentClient, err := torrent.NewClient(cfg)
if err != nil {
return fmt.Errorf("newClient: %w", err)
}
mi, err := metainfo.Load(bytes.NewReader(torrentData))
if err != nil {
return fmt.Errorf("metainfo load: %w", err)
}
tr, err := torrentClient.AddTorrent(mi)
if err != nil {
return fmt.Errorf("addTorrent: %w", err)
}
start := time.Now()
<-tr.GotInfo()
defer tr.Drop()
go func() {
tick := time.NewTicker(6 * time.Second)
for {
select {
case <-tick.C:
st := tr.Stats()
dataRate := (datasize.ByteSize(float64(st.BytesRead.Int64())/time.Since(start).Seconds()) * datasize.B)
remainingTime := float64(tr.Info().TotalLength()) / float64(dataRate)
totalPercent := float64(tr.BytesCompleted()) / float64(tr.Info().TotalLength()) * float64(100)
gui.SetProgress(int(totalPercent))
slog.Printf("peers: %d, seeders: %d, %s/s %0.2f%% of %s, ETA %0.1f minutes\n",
st.ActivePeers,
st.ConnectedSeeders,
dataRate.HR(),
totalPercent,
(datasize.ByteSize(tr.Info().TotalLength()) * datasize.B).HR(),
remainingTime/60)
case <-tr.Closed():
return
}
}
}()
slog.Printf("Downloading %s via Torrent", tr.Name())
tr.DownloadAll()
torrentClient.WaitAll()
return nil
}