graph

type Edge struct {
	From *Node
	To   *Node

	Styles EdgeStyles
}

type EdgeStyles struct {
	ArrowTail string
	Style     string
	Color     string
	FontColor string
	Width     float64
	Label     string
	ToolTip   string
}

type Edges map[string]*Edge

type Graph struct {
	Name string

	IsSubgraph bool

	GraphStyle Styles
	NodeStyle  NodeStyles
	EdgeStyle  EdgeStyles

	SubGraphs SubGraphs
	Nodes     Nodes
	Edges     Edges
}

type Node struct {
	Name string

	Edges  Edges
	Styles NodeStyles
}

type NodeStyles struct {
	Label string

	Shape      string
	FillColor  string
	EdgeColor  string
	Style      string
	FontSize   int64
	FontFamily string
	FontColor  string
}

type Nodes map[string]*Node

type Styles struct {
	Label       string
	Padding     float64
	NodeMargin  float64
	GraphMargin float64
	Style       string
	FontColor   string
	BorderColor string
}

type SubGraphs map[string]*Graph