#!/usr/bin/env ruby

# Script created by and licensed to David Smalley (http://davidsmalley.com) under the MIT license
# Please feel free to make modifications

require 'rubygems'
require 'xmlsimple'
require 'fileutils'

raise ArgumentError.new("Usage: ruby opml_spec.rb <opmlfile>") unless ARGV.size == 1

def parse_opml(opml)
  opml.delete("head")
  opml["body"][0]["outline"].each do |root|
    spec_file = []
    spec_root_text = root["text"]
    root["outline"] && root["outline"].each do |child|
      spec_sub_text = child["text"]
      spec_file << "describe #{spec_root_text}, \"#{spec_sub_text}\" do\n"
      spec_file << "\n"
      child["outline"].each do |sub_child|
        spec_text = sub_child["text"]
        spec_file << "  it \"#{spec_text}\" do\n"
        spec_file << "\n"
        spec_file << "  end\n"
        spec_file << "\n"
      end
      spec_file << "\n"
      spec_file << "end\n"
      spec_file << "\n"
    end
    write_spec_file(spec_file, spec_root_text)
  end
end

def underscore(camel_cased_word)
  camel_cased_word.to_s.gsub(/::/, '/').
  gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
  gsub(/([a-z\d])([A-Z])/,'\1_\2').
  tr("-", "_").
  downcase
end

def write_spec_file(spec_file_data, root_text)
  file_name = root_text.gsub(/\s/, "")
  file_name = underscore(file_name)
  path = FileUtils.mkdir_p("./specs")
  file = File.new("#{path}/#{file_name}_spec.rb", "w")
  file.puts("#{spec_file_data}")
  file.close
end

opml = XmlSimple.xml_in(File.read(ARGV[0]))
parse_opml(opml)