fs

type CopyInput struct {
	CheckParents          bool
	SourceName            string
	SourceFileInfo        FileInfo
	SourceFileSystem      FileSystem
	DestinationName       string
	DestinationFileInfo   FileInfo
	DestinationFileSystem FileSystem
	Logger                Logger
	MakeParents           bool
}

type DirectoryEntry struct {
	// contains filtered or unexported fields
}

type DirectoryEntryInterface interface {
	IsDir() bool
	MarshalJSON() ([]byte, error)
	ModTime() time.Time
	Name() string
	Size() int64
	String() string
}

type File interface {
	io.ReadSeekCloser
	io.WriteCloser
	io.WriterAt
	Name() string
	WriteTo(ctx context.Context, w Writer) (int64, error)
}

type FileInfo interface {
	IsDir() bool
	Name() string
	ModTime() time.Time
	Size() int64
	String() string
}

type FileSystem interface {
	Chtimes(ctx context.Context, name string, atime time.Time, mtime time.Time) error
	Copy(ctx context.Context, input *CopyInput) error
	Dir(name string) string
	IsNotExist(err error) bool
	Join(name ...string) string
	MagicNumber(ctx context.Context, name string) ([]byte, error)
	MagicNumbers(ctx context.Context, names []string, threads int) ([][]byte, error)
	MkdirAll(ctx context.Context, name string, mode os.FileMode) error
	MustRelative(ctx context.Context, basepath string, targetpath string) string
	Open(ctx context.Context, name string) (Object, error)
	OpenObject(ctx context.Context, name string, flag int, perm os.FileMode) (Object, error)
	Relative(ctx context.Context, basepath string, targetpath string) (string, error)
	ReadDir(ctx context.Context, name string, recursive bool) ([]DirectoryEntryInterface, error)
	ReadFile(ctx context.Context, name string, p []byte) (n int, err error) // open up a file and read the contents
	RemoveFile(ctx context.Context, name string) error
	RemoveFiles(ctx context.Context, names []string) error
	RemoveDirectory(ctx context.Context, name string, recursive bool) error
	RemoveDirectories(ctx context.Context, name []string, recursive bool) error
	Root() string
	Size(ctx context.Context, name string) (int64, error)
	Stat(ctx context.Context, name string) (FileInfo, error)
	Sync(ctx context.Context, input *SyncInput) (int, error)
	SyncDirectory(ctx context.Context, input *SyncDirectoryInput) (int, error)
}

type Logger interface {
	Log(msg string, fields ...map[string]interface{}) error
}

type Object interface {
	io.ReadSeekCloser
	io.WriteCloser
	Name() string
	WriteTo(ctx context.Context, w Writer) (int64, error)
}

type SyncDirectoryInput struct {
	Delete                bool
	CheckTimestamps       bool
	DestinationDirectory  string
	DestinationFileSystem FileSystem
	Exclude               []string
	Limit                 int
	Logger                Logger
	MaxThreads            int
	SourceDirectory       string
	SourceFileSystem      FileSystem
	TimestampPrecision    time.Duration
}

type SyncInput struct {
	Delete                bool
	Source                string // could be file or directory
	SourceFileSystem      FileSystem
	Destination           string // could be file or directory
	Exclude               []string
	DestinationFileSystem FileSystem
	Parents               bool
	CheckTimestamps       bool
	Limit                 int
	Logger                Logger
	MaxThreads            int
	TimestampPrecision    time.Duration
}

type Writer interface {
	io.WriteCloser
}

type WriterAt interface {
	Writer
	io.WriterAt
}