feat: copy files between 2 accounts

internal/fs/copy.go

@@ -0,0 +1,41 @@
+package fs
+
+import (
+	"context"
+	stdpath "path"
+
+	"github.com/alist-org/alist/v3/internal/driver"
+	"github.com/alist-org/alist/v3/internal/model"
+	"github.com/alist-org/alist/v3/internal/operations"
+	"github.com/pkg/errors"
+)
+
+func CopyBetween2Accounts(ctx context.Context, srcAccount, dstAccount driver.Driver, srcPath, dstPath string) error {
+	srcFile, err := operations.Get(ctx, srcAccount, srcPath)
+	if err != nil {
+		return errors.WithMessagef(err, "failed get src [%s] file", srcPath)
+	}
+	if srcFile.IsDir() {
+		files, err := operations.List(ctx, srcAccount, srcPath)
+		if err != nil {
+			return errors.WithMessagef(err, "failed list src [%s] files", srcPath)
+		}
+		for _, file := range files {
+			srcFilePath := stdpath.Join(srcPath, file.GetName())
+			dstFilePath := stdpath.Join(dstPath, file.GetName())
+			if err := CopyBetween2Accounts(ctx, srcAccount, dstAccount, srcFilePath, dstFilePath); err != nil {
+				return errors.WithMessagef(err, "failed copy file [%s] to [%s]", srcFilePath, dstFilePath)
+			}
+		}
+	}
+	link, err := operations.Link(ctx, srcAccount, srcPath, model.LinkArgs{})
+	if err != nil {
+		return errors.WithMessagef(err, "failed get [%s] link", srcPath)
+	}
+	stream, err := getFileStreamFromLink(srcFile, link)
+	if err != nil {
+		return errors.WithMessagef(err, "failed get [%s] stream", srcPath)
+	}
+	// TODO add as task
+	return operations.Put(ctx, dstAccount, dstPath, stream)
+}