module Rack::Typhoeus::Middleware::ParamsDecoder::Helper

def convert(hash)
  if encoded?(hash)
    hash.sort{ |a, b| a[0].to_i <=> b[0].to_i }.map{ |key, value| value }
  else
    hash
  end
end

def decode(hash)
  decode!(hash.dup)
end

def decode!(hash)
  return hash unless hash.is_a?(Hash)
  hash.each_pair do |key,value|
    if value.is_a?(Hash)
      decode!(value)
      hash[key] = convert(value)
    end
  end
  hash
end

def decode_typhoeus_arrays
  decode!(params)
end

def encoded?(hash)
  return false if hash.empty?
 if hash.keys.size > 1
    keys = hash.keys.map{|i| i.to_i if i.respond_to?(:to_i)}.sort
    keys == hash.keys.size.times.to_a
 else
    hash.keys.first =~ /0/
 end
end