package backends

import (
	"io"
	"os"
)

type FileStore interface {
	// write content at given path
	WriteFile(path string, reader io.Reader) (err error)

	// create dir at given path
	CreateDir(path string) (err error)

	// generate a checksum for a given path (file or directory)
	Checksum(path string) (err error)

	// read content of file at given path
	ReadFile(path string) (reader io.Reader, err error)

	// list direct paths in root dir
	ReadRoot() (list []os.FileInfo, err error)

	// list direct child paths within dir at path
	ReadDir(path string) (list []os.FileInfo, err error)

	// list direct and indirect childs within dir at given path for a given depth
	// depth -1 means unlimited depth
	ReadDirTree(path string, depth int) (paths []File, err error)

	// move file or dir at given path
	Move(path string, newPath string) (err error)

	// delete file or dir at given path
	Delete(path string) (err error)
}

package backends

import (
	"io"
	"os"
)

type FileStore interface {
	// write content at given path
	WriteFile(path string, reader io.Reader) (err error)

	// create dir at given path
	CreateDir(path string) (err error)

	// generate a checksum for a given path (file or directory)
	Checksum(path string) (err error)

	// read content of file at given path
	ReadFile(path string) (reader io.Reader, err error)

	// list direct child paths within dir at path
	ReadDir(path string) (list []os.FileInfo, err error)

	// list direct and indirect childs within dir at given path for a given depth
	// depth -1 means unlimited depth
	ReadDirTree(path string, depth int) (paths []File, err error)

	// move file or dir at given path
	Move(path string, newPath string) (err error)

	// delete file or dir at given path
	Delete(path string) (err error)
}

--- 
+++ 
@@ -18,6 +18,9 @@
 	// read content of file at given path
 	ReadFile(path string) (reader io.Reader, err error)
 
+	// list direct paths in root dir
+	ReadRoot() (list []os.FileInfo, err error)
+
 	// list direct child paths within dir at path
 	ReadDir(path string) (list []os.FileInfo, err error)
 
Add ReadRoot() to file store interface.
