package routers

import (
	"fmt"
	Ipam "utils/ipam"
)

func RunRouters(ipam *Ipam.Ipam) error {
	routers := ipam.Routers

	fmt.Printf("digraph {\n")
	//fmt.Printf(" layout=dot\n")
	//fmt.Printf(" layout=twopi\n")
	fmt.Printf(" layout=fdp\n")
	//fmt.Printf(" layout=circo\n")
	//fmt.Printf(" layout=neato\n")
	//fmt.Printf(" ranksep=3\n")
	//fmt.Printf(" ratio=auto\n")
	//fmt.Printf(" rankdir=LR\n")
	//fmt.Printf(" rankdir=RL\n")
	fmt.Printf(" rankdir=TB\n")
	//fmt.Printf(" sep=3\n")
	//fmt.Printf(" overlap_scaling=-10\n")
	fmt.Printf("node [len=10];")
	fmt.Printf("node [shape=box];")
	fmt.Printf("overlap=false")

	fmt.Printf("\n")
	fmt.Printf("  # Nodes\n")
	for _, r := range routers {
		fmt.Printf("  %s [ label = \"%s\"];\n", r.Name, r.Name)
	}

	fmt.Printf("\n")
	fmt.Printf("  # Connections\n")
	for _, n := range routers {
		fmt.Printf("  %s [ root = true ];\n", n.Name)
	}

	fmt.Printf("\n")
	fmt.Printf("  # Peers\n")
	for _, r := range routers {
		for _, p := range r.Peers {
			fmt.Printf("  %s -> %s", r.Name, p.Name)
			fmt.Printf(";\n")
		}
	}
	fmt.Printf("}\n")

	return nil
}