common

type FileSystem interface {
	GetLocalExecutable(name string) (string, error)

	FileExists(filename string) (bool, error)
	WriteFile(filename string, content []byte) error
	WriteLockFileFunc(filename string, writeFunc func(io.Writer) error) (LockFile, error)
	DeleteFile(filename string) (bool, error)
	ReadFileLines(filename string) ([]string, error)

	// ReadDirRecursive recurses into a given directory ('path') up to 'depth'
	// levels deep. If 'strictDepth' is true, only the entries at *exactly* the
	// given depth are returned (if any). If 'strictDepth' is false, though, the
	// results will also include any files or empty directories for a depth <
	// 'depth'.
	//
	// If 'depth' is <= 0, ReadDirRecursive returns an empty list.
	ReadDirRecursive(path string, depth int, strictDepth bool) ([]ReadDirEntry, error)
}

type LockFile interface {
	Commit() error
	Rollback() error
}

type ReadDirEntry interface {
	Path() string
	fs.DirEntry
}

type UserProvider interface {
	CurrentUser() (*user.User, error)
}