require 'json'
require 'fileutils'

$res_root = (lambda {
  dir = File.dirname(__FILE__)
  loop do
    parent_dir = File.expand_path('..', dir)
    break if dir.empty? || parent_dir == dir
    dir = parent_dir
    break if File.exist?("#{dir}/project.godot")
  end
  return dir
}).call

CONFIG_ROOT = "#{$res_root}/.tbl"

def get_options(tool_file)
  options = {}
  name = File.basename(tool_file, ".rb")
  JSON.parse(File.read("#{CONFIG_ROOT}/#{name}.json"))['options'].each do |unit|
    key, value = unit['name'], unit['value']
    value.gsub!('res:', $res_root) if value.is_a?(String)
    options[key] = value
  end
  return options
end

def convert_case(source)
  return source.split('_').collect(&:capitalize).join
end

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

def ensure_dir(dir)
  return if Dir.exist?(dir)
  FileUtils.mkdir_p dir
end

def recreate_dir(dir)
  FileUtils.rm_rf dir
  FileUtils.mkdir_p dir
end