Initial QSfera import

Server/qsfera/pkg/trash/trash.go

@@ -0,0 +1,57 @@
+package trash
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+const (
+	// _trashGlobPattern is the glob pattern to find all trash items
+	_trashGlobPattern = "spaces/*/*/trash/*/*/*/*"
+)
+
+// PurgeTrashEmptyPaths purges empty paths in the trash
+func PurgeTrashEmptyPaths(p string, dryRun bool) error {
+	// we have all trash nodes in all spaces now
+	dirs, err := filepath.Glob(filepath.Join(p, _trashGlobPattern))
+	if err != nil {
+		return err
+	}
+
+	if len(dirs) == 0 {
+		return errors.New("no trash found. Double check storage path")
+	}
+
+	for _, d := range dirs {
+		if err := removeEmptyFolder(d, dryRun); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func removeEmptyFolder(path string, dryRun bool) error {
+	if dryRun {
+		f, err := os.ReadDir(path)
+		if err != nil {
+			return err
+		}
+		if len(f) < 1 {
+			fmt.Println("would remove", path)
+		}
+		return nil
+	}
+	if err := os.Remove(path); err != nil {
+		// we do not really care about the error here
+		// if the folder is not empty we will get an error,
+		// this is our signal to break out of the recursion
+		return nil
+	}
+	nd := filepath.Dir(path)
+	if filepath.Base(nd) == "trash" {
+		return nil
+	}
+	return removeEmptyFolder(nd, dryRun)
+}