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package tool
import (
"fmt"
"time"
"github.com/alist-org/alist/v3/internal/conf"
"github.com/alist-org/alist/v3/internal/errs"
"github.com/alist-org/alist/v3/internal/setting"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"github.com/xhofe/tache"
)
type DownloadTask struct {
tache.Base
Url string `json:"url"`
DstDirPath string `json:"dst_dir_path"`
TempDir string `json:"temp_dir"`
DeletePolicy DeletePolicy `json:"delete_policy"`
Status string `json:"status"`
Signal chan int `json:"-"`
GID string `json:"-"`
tool Tool
callStatusRetried int
}
func (t *DownloadTask) Run() error {
if err := t.tool.Run(t); !errs.IsNotSupportError(err) {
if err == nil {
return t.Complete()
}
return err
}
t.Signal = make(chan int)
defer func() {
t.Signal = nil
}()
gid, err := t.tool.AddURL(&AddUrlArgs{
Url: t.Url,
UID: t.ID,
TempDir: t.TempDir,
Signal: t.Signal,
})
if err != nil {
return err
}
t.GID = gid
var (
ok bool
)
outer:
for {
select {
case <-t.CtxDone():
err := t.tool.Remove(t)
return err
case <-t.Signal:
ok, err = t.Update()
if ok {
break outer
}
case <-time.After(time.Second * 3):
ok, err = t.Update()
if ok {
break outer
}
}
}
if err != nil {
return err
}
t.Status = "offline download completed, maybe transferring"
// hack for qBittorrent
if t.tool.Name() == "qBittorrent" {
seedTime := setting.GetInt(conf.QbittorrentSeedtime, 0)
if seedTime >= 0 {
t.Status = "offline download completed, waiting for seeding"
<-time.After(time.Minute * time.Duration(seedTime))
err := t.tool.Remove(t)
if err != nil {
log.Errorln(err.Error())
}
}
}
return nil
}
// Update download status, return true if download completed
func (t *DownloadTask) Update() (bool, error) {
info, err := t.tool.Status(t)
if err != nil {
t.callStatusRetried++
log.Errorf("failed to get status of %s, retried %d times", t.ID, t.callStatusRetried)
return false, nil
}
if t.callStatusRetried > 5 {
return true, errors.Errorf("failed to get status of %s, retried %d times", t.ID, t.callStatusRetried)
}
t.callStatusRetried = 0
t.SetProgress(info.Progress)
t.Status = fmt.Sprintf("[%s]: %s", t.tool.Name(), info.Status)
if info.NewGID != "" {
log.Debugf("followen by: %+v", info.NewGID)
t.GID = info.NewGID
return false, nil
}
// if download completed
if info.Completed {
err := t.Complete()
return true, errors.WithMessage(err, "failed to transfer file")
}
// if download failed
if info.Err != nil {
return true, errors.Errorf("failed to download %s, error: %s", t.ID, info.Err.Error())
}
return false, nil
}
func (t *DownloadTask) Complete() error {
var (
files []File
err error
)
if getFileser, ok := t.tool.(GetFileser); ok {
files = getFileser.GetFiles(t)
} else {
files, err = GetFiles(t.TempDir)
if err != nil {
return errors.Wrapf(err, "failed to get files")
}
}
// upload files
for i, _ := range files {
file := files[i]
TransferTaskManager.Add(&TransferTask{
file: file,
dstDirPath: t.DstDirPath,
tempDir: t.TempDir,
deletePolicy: t.DeletePolicy,
})
}
return nil
}
func (t *DownloadTask) GetName() string {
return fmt.Sprintf("download %s to (%s)", t.Url, t.DstDirPath)
}
func (t *DownloadTask) GetStatus() string {
return t.Status
}
var (
DownloadTaskManager *tache.Manager[*DownloadTask]
)
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