package main

import (
	"fmt"

	h "git.bullercodeworks.com/brian/adventofcode/helpers"
)

func main() {
	inp := h.StdinToStringSlice()
	build := inp[0]
	for _, v := range inp[1:] {
		build = fmt.Sprintf("[%s,%s]", build, v)
	}

	// Keep on steppin' until no change happens
	var wrk string
	var done bool
	for !done {
		wrk = step(build)
		done = wrk == build
		build = wrk
	}
	fmt.Println(wrk)
}

var steps int

func step(inp string) string {
	steps++
	// Find the first number that needs to explode.
	wrk := explode(inp)
	if wrk != inp {
		return wrk
	}
	// Nothing exploded, look for a split.
	return split(inp)
}

func explode(inp string) string {
	var depth int
	for i := range inp {
		if inp[i] == '[' {
			if depth == 4 {
				// Explode the leftmost pair from here

			}
			depth++
		} else if inp[i] == ']' {
			depth--
		}
	}
}

func split(inp string) string {

	return inp
}