fixed correct proton drive upload with vertical slices

internal/drive/drive.go

@@ -10,12 +10,10 @@ import (
 
 const binaryName = "proton-drive"
 
-// Lookup returns the full path to the proton-drive binary in PATH.
 func Lookup() (string, error) {
 	return exec.LookPath(binaryName)
 }
 
-// CheckAuth verifies that the user is authenticated by listing /my-files.
 func CheckAuth() error {
 	binary, err := Lookup()
 	if err != nil {
@@ -32,11 +30,57 @@ func CheckAuth() error {
 	return nil
 }
 
-// Upload uploads localPath to remotePath on Proton Drive.
-// remotePath is a full path including filename (e.g. /my-files/md/report.md).
-// The CLI uploads to a parent directory and preserves the local filename,
-// so if the remote filename differs from the local one, a temp copy is staged.
-// Existing remote files are overwritten (--conflict-strategy replace).
+// EnsureRemoteParent creates the parent remote directory if it doesn't exist.
+func EnsureRemoteParent(remoteDir string) error {
+	binary, err := Lookup()
+	if err != nil {
+		return fmt.Errorf("proton-drive not found in PATH: %w", err)
+	}
+
+	parentDir := filepath.Dir(remoteDir)
+
+	// Try create-folder on the grandparent for the parent
+	grandparent := filepath.Dir(parentDir)
+	parentName := filepath.Base(parentDir)
+
+	cmd := exec.Command(binary, "filesystem", "create-folder", grandparent, parentName)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	cmd.Run() // Ignore errors — folder may already exist
+
+	return nil
+}
+
+// UploadDir uploads an entire local directory to Proton Drive.
+// The local directory's basename becomes the remote directory name.
+func UploadDir(localDir, remoteDir string) error {
+	binary, err := Lookup()
+	if err != nil {
+		return fmt.Errorf("proton-drive not found in PATH: %w", err)
+	}
+
+	// Ensure parent of remote dir exists
+	if err := EnsureRemoteParent(remoteDir); err != nil {
+		return fmt.Errorf("cannot prepare remote directory: %w", err)
+	}
+
+	// Upload to parent — the local dir's basename creates the remote dir
+	remoteParent := filepath.Dir(remoteDir)
+
+	cmd := exec.Command(binary, "filesystem", "upload", localDir, remoteParent,
+		"--conflict-strategy", "replace")
+
+	var stderr strings.Builder
+	cmd.Stderr = &stderr
+
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("upload to proton-drive failed: %w: %s",
+			err, strings.TrimSpace(stderr.String()))
+	}
+	return nil
+}
+
+// Upload uploads a single local file to a remote path on Proton Drive.
 func Upload(localPath, remotePath string) error {
 	binary, err := Lookup()
 	if err != nil {