diff

type DiffLine struct {
	LocalLine  string
	RemoteLine string
	Kind       LineKind
	LocalNum   int // 0 = line not present on this side
	RemoteNum  int
}

type DiffResult struct {
	LocalPath  string
	RemotePath string
	Lines      []DiffLine

	// Existence flags
	LocalOnly  bool // file exists only locally (not on remote)
	RemoteOnly bool // file exists only on remote

	// Metadata
	Binary     bool
	SizeLocal  int64
	SizeRemote int64
	ModLocal   time.Time
	ModRemote  time.Time
}

type LineKind int

type RemoteClient interface {
	Stat(path string) (os.FileInfo, error)
	ReadFile(path string) ([]byte, error)
}

type Session struct {
	LocalPath  string
	RemotePath string
	Result     *DiffResult
	Loaded     bool
	Err        error
}