feat: add support for handling unsupported stream storage in download process

core/download.go

@@ -59,41 +59,50 @@ func processPendingTask(task *types.Task) error {
 
 	downloadBuilder := Downloader.Download(bot.Client.API(), task.File.Location).WithThreads(getTaskThreads(task.File.FileSize))
 
+	notsupportStreamStorage, notsupportStream := taskStorage.(storage.StorageNotSupportStream)
+	cancelMarkUp := getCancelTaskMarkup(task)
 	if config.Cfg.Stream {
+		if !notsupportStream {
+			text, entities := buildProgressMessageEntity(task, 0, task.StartTime, 0)
+			ctx.EditMessage(task.ReplyChatID, &tg.MessagesEditMessageRequest{
+				Message:     text,
+				Entities:    entities,
+				ID:          task.ReplyMessageID,
+				ReplyMarkup: cancelMarkUp,
+			})
 
-		text, entities := buildProgressMessageEntity(task, 0, task.StartTime, 0)
-		ctx.EditMessage(task.ReplyChatID, &tg.MessagesEditMessageRequest{
-			Message:     text,
-			Entities:    entities,
-			ID:          task.ReplyMessageID,
-			ReplyMarkup: getCancelTaskMarkup(task),
-		})
+			pr, pw := io.Pipe()
+			defer pr.Close()
 
-		pr, pw := io.Pipe()
-		defer pr.Close()
+			task.StartTime = time.Now()
+			progressCallback := buildProgressCallback(ctx, task, getProgressUpdateCount(task.File.FileSize))
 
-		task.StartTime = time.Now()
-		progressCallback := buildProgressCallback(ctx, task, getProgressUpdateCount(task.File.FileSize))
+			progressStream := NewProgressStream(pw, task.File.FileSize, progressCallback)
 
-		progressStream := NewProgressStream(pw, task.File.FileSize, progressCallback)
+			eg, uploadCtx := errgroup.WithContext(cancelCtx)
 
-		eg, uploadCtx := errgroup.WithContext(cancelCtx)
-
-		eg.Go(func() error {
-			return taskStorage.Save(uploadCtx, pr, task.StoragePath)
-		})
-		eg.Go(func() error {
-			_, err := downloadBuilder.Stream(uploadCtx, progressStream)
-			if closeErr := pw.CloseWithError(err); closeErr != nil {
-				common.Log.Errorf("Failed to close pipe writer: %v", closeErr)
+			eg.Go(func() error {
+				return taskStorage.Save(uploadCtx, pr, task.StoragePath)
+			})
+			eg.Go(func() error {
+				_, err := downloadBuilder.Stream(uploadCtx, progressStream)
+				if closeErr := pw.CloseWithError(err); closeErr != nil {
+					common.Log.Errorf("Failed to close pipe writer: %v", closeErr)
+				}
+				return err
+			})
+			if err := eg.Wait(); err != nil {
+				return err
 			}
-			return err
-		})
-		if err := eg.Wait(); err != nil {
-			return err
-		}
 
-		return nil
+			return nil
+		}
+		common.Log.Warnf("存储 %s 不支持流式传输: %s", task.StorageName, notsupportStreamStorage.NotSupportStream())
+		ctx.EditMessage(task.ReplyChatID, &tg.MessagesEditMessageRequest{
+			Message:     fmt.Sprintf("存储 %s 不支持流式传输: %s\n正在使用普通下载...", task.StorageName, notsupportStreamStorage.NotSupportStream()),
+			ID:          task.ReplyMessageID,
+			ReplyMarkup: cancelMarkUp,
+		})
 	}
 
 	cacheDestPath := filepath.Join(config.Cfg.Temp.BasePath, task.FileName())
@@ -110,7 +119,7 @@ func processPendingTask(task *types.Task) error {
 		Message:     text,
 		Entities:    entities,
 		ID:          task.ReplyMessageID,
-		ReplyMarkup: getCancelTaskMarkup(task),
+		ReplyMarkup: cancelMarkUp,
 	})
 
 	progressCallback := buildProgressCallback(ctx, task, getProgressUpdateCount(task.File.FileSize))

storage/alist/alist.go

@@ -140,6 +140,10 @@ func (a *Alist) Save(ctx context.Context, reader io.Reader, storagePath string)
 	return nil
 }
 
+func (a *Alist) NotSupportStream() string {
+	return "Alist does not support chunked transfer encoding"
+}
+
 func (a *Alist) JoinStoragePath(task types.Task) string {
 	return path.Join(a.config.BasePath, task.StoragePath)
 }

storage/storage.go

@@ -23,6 +23,11 @@ type Storage interface {
 	Save(ctx context.Context, reader io.Reader, storagePath string) error
 }
 
+type StorageNotSupportStream interface {
+	Storage
+	NotSupportStream() string
+}
+
 var Storages = make(map[string]Storage)
 
 var UserStorages = make(map[int64][]Storage)