#!/usr/bin/env ruby

class Ingredient
  def initialize(nam, cap, dur, fla, tex, cal)
    @name = nam
    @capacity = cap
    @durability = dur
    @flavour = fla
    @texture = tex
    @calories = cal
  end

  attr_reader :capacity, :durability, :flavour, :texture, :calories

  def self.parse(line)
    name, data = line.strip.split(": ")
    new(name, *data.scan(/(-?\d+)/).flatten.map(&:to_i))
  end
end

def cookiescore(zip)
  cap = zip.map { |qty, ing| qty * ing.capacity }.sum
  cap = 0 if cap < 0
  dur = zip.map { |qty, ing| qty * ing.durability }.sum
  dur = 0 if dur < 0
  fla = zip.map { |qty, ing| qty * ing.flavour }.sum
  fla = 0 if fla < 0
  tex = zip.map { |qty, ing| qty * ing.texture }.sum
  tex = 0 if tex < 0

  cap * dur * fla * tex
end

def cookiecal(zip)
  zip.map { |qty, ing| qty * ing.calories }.sum
end


ingredients = File
  .readlines("day15.input")
  .map { |line| Ingredient.parse(line) }

recipies = (0..100).to_a
  .permutation(ingredients.length)
  .select { |s| s.sum == 100 }


bestscore = 0
recipies.each do |recipe|
  zip = recipe.zip(ingredients)
  score = cookiescore(zip)
  bestscore = score if score > bestscore
end
puts "Part 1: #{bestscore}"


bestscore = 0
recipies.each do |recipe|
  zip = recipe.zip(ingredients)
  next unless cookiecal(zip) == 500
  score = cookiescore(zip)
  bestscore = score if score > bestscore
end
puts "Part 2: #{bestscore}"