package one

import (
	"strings"
)

type graph struct {
	startPoint point
	data       []string
}

func newGraph() *graph {
	return &graph{}
}

func (g *graph) String() string {
	return strings.Join(g.data, "\n")
}

func (g *graph) debug(visited map[coords]struct{}) string {
	for loc := range visited {
		if !(rune(g.data[loc.Y][loc.X]) == 'O') {
			g.data[loc.Y] = replaceAtIndex(g.data[loc.Y], '+', loc.X)
		}
	}

	return g.String()
}