#!/usr/bin/ruby
require "net/http"
require "json"

# Fill in your RPC username and password from your bitcoin.conf here.
$rpc_auth = "user", "pass"

max_bangs = 10
words = [
  [ "one"   , "One"   , "ONE"]   , 
  [ "two"   , "Two"   , "TWO"]   , 
  [ "three" , "Three" , "THREE"] , 
  [ "four"  , "Four"  , "FOUR"]  , 
]

def test(passphrase)
  puts passphrase
  request = Net::HTTP::Post.new("/")
  request.basic_auth *$rpc_auth
  request.body = { method:"walletpassphrase", params:[passphrase, 1] }.to_json
  response = Net::HTTP.new("localhost", 8332).request(request)
  if response.code == "401" ; puts "Incorrect RPC user/pass" ; exit 1 ; end
  ret = JSON.parse response.body
  if ret["error"].nil? ; puts "\nFound it! #{passphrase.inspect}" ; exit ; end
  return if ret["error"]["code"] == -14 # wrong passphrase
  raise "WTF? #{ret.inspect}"
end

def spin(phrase, array)
  return phrase if array.empty?
  array.first.map do |word|
    p = phrase.dup.push word
    spin(p, array[1,99])
  end
end

spin([], words).flatten(words.count - 1).each do |phrase|
  phrase.permutation(words.count) do |shuffled|
    (max_bangs + 1).times do |bangs|
      test shuffled.join(" ") + ("!" * bangs)
    end
  end
end

puts "No luck."