fix: sort of completed tasks (#297)

pkg/download/downloader.go

@@ -572,7 +572,8 @@ func (d *Downloader) getProtocolConfig(name string, v any) bool {
 func (d *Downloader) watch(task *Task) {
 	err := task.fetcher.Wait()
 	if err != nil {
-		task.Status = base.DownloadStatusError
+		task.updateStatus(base.DownloadStatusError)
+		d.storage.Put(bucketTask, task.ID, task.clone())
 		d.emit(EventKeyError, task, err)
 	} else {
 		task.Progress.Used = task.timer.Used()
@@ -586,7 +587,7 @@ func (d *Downloader) watch(task *Task) {
 		totalSize := task.Meta.Res.Size
 		task.Progress.Speed = totalSize / used
 		task.Progress.Downloaded = totalSize
-		task.Status = base.DownloadStatusDone
+		task.updateStatus(base.DownloadStatusDone)
 		d.storage.Put(bucketTask, task.ID, task.clone())
 		d.emit(EventKeyDone, task)
 		d.emit(EventKeyFinally, task, err)
@@ -658,7 +659,6 @@ func (d *Downloader) doCreate(fetcher fetcher.Fetcher, opts *base.Options) (task
 	task.fetcher = fetcher
 	task.Meta = fetcher.Meta()
 	task.Progress = &Progress{}
-	task.Status = base.DownloadStatusReady
 	initTask(task)
 	if err = fetcher.Create(opts); err != nil {
 		return
@@ -699,7 +699,7 @@ func (d *Downloader) doStart(task *Task) (err error) {
 
 	cloneTask := task.clone()
 	isCreate := task.Status == base.DownloadStatusReady
-	task.Status = base.DownloadStatusRunning
+	task.updateStatus(base.DownloadStatusRunning)
 
 	doStart := func() error {
 		task.lock.Lock()
@@ -714,7 +714,8 @@ func (d *Downloader) doStart(task *Task) (err error) {
 		if task.Meta.Res == nil {
 			err := task.fetcher.Resolve(task.Meta.Req)
 			if err != nil {
-				task.Status = base.DownloadStatusError
+				task.updateStatus(base.DownloadStatusError)
+				d.storage.Put(bucketTask, task.ID, task.clone())
 				d.emit(EventKeyError, task, err)
 				return err
 			}
@@ -768,7 +769,7 @@ func (d *Downloader) doStart(task *Task) (err error) {
 func (d *Downloader) doPause(task *Task) (err error) {
 	err = func() error {
 		if task.Status != base.DownloadStatusDone {
-			task.Status = base.DownloadStatusPause
+			task.updateStatus(base.DownloadStatusPause)
 			task.timer.Pause()
 			if task.fetcher != nil {
 				if err := task.fetcher.Pause(); err != nil {

pkg/download/model.go

@@ -24,6 +24,7 @@ type Task struct {
 	Status    base.Status          `json:"status"`
 	Progress  *Progress            `json:"progress"`
 	CreatedAt time.Time            `json:"createdAt"`
+	UpdatedAt time.Time            `json:"updatedAt"`
 
 	fetcherBuilder fetcher.FetcherBuilder
 	fetcher        fetcher.Fetcher
@@ -41,9 +42,15 @@ func NewTask() *Task {
 		ID:        id,
 		Status:    base.DownloadStatusReady,
 		CreatedAt: time.Now(),
+		UpdatedAt: time.Now(),
 	}
 }
 
+func (t *Task) updateStatus(status base.Status) {
+	t.UpdatedAt = time.Now()
+	t.Status = status
+}
+
 func (t *Task) clone() *Task {
 	return &Task{
 		ID:        t.ID,
@@ -51,6 +58,7 @@ func (t *Task) clone() *Task {
 		Status:    t.Status,
 		Progress:  t.Progress,
 		CreatedAt: t.CreatedAt,
+		UpdatedAt: t.UpdatedAt,
 	}
 }