filer

type ApiRequest struct {
	Command   string //"listFiles", "listDirectories", "getFileSize"
	Directory string
	FileName  string
	FileId    string
}

type DirectoryEntry struct {
	Name string //dir name without path
	Id   DirectoryId
}

type DirectoryId int32

type FileEntry struct {
	Name string `json:"name,omitempty"` //file name without path
	Id   FileId `json:"fid,omitempty"`
}

type FileId string //file id in SeaweedFS

type Filer interface {
	CreateFile(fullFileName string, fid string) (err error)
	FindFile(fullFileName string) (fid string, err error)
	DeleteFile(fullFileName string) (fid string, err error)

	//Optional functions. embedded filer support these
	FindDirectory(dirPath string) (dirId DirectoryId, err error)
	ListDirectories(dirPath string) (dirs []DirectoryEntry, err error)
	ListFiles(dirPath string, lastFileName string, limit int) (files []FileEntry, err error)
	DeleteDirectory(dirPath string, recursive bool) (err error)
	Move(fromPath string, toPath string) (err error)
}

type GetFileContentResult struct {
	Content []byte
	Error   string `json:"error,omitempty"`
}

type GetFileSizeResult struct {
	Size  uint64
	Error string `json:"error,omitempty"`
}

type ListDirectoriesResult struct {
	Directories []DirectoryEntry
	Error       string `json:"error,omitempty"`
}

type ListFilesResult struct {
	Files []FileEntry
	Error string `json:"error,omitempty"`
}