# Author::    Maurizio Casimirri (mailto:maurizio.cas@gmail.com)
# Copyright:: Copyright (c) 2012 Maurizio Casimirri
# 
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
# 
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

require 'rails'
require 'iso3166'

module ActionView
  module Helpers    
    module FormOptionsHelper
      def country_select(object, method, priority_countries = nil, options = {}, html_options = {})
        InstanceTag.new(object, method, self, options.delete(:object)).to_country_select_tag(priority_countries, options, html_options)
      end
      def country_options_for_select(selected = nil, priority_countries = nil)
        country_options = ""

        if priority_countries
          country_options += options_for_select(priority_countries, selected)
          country_options += "<option value=\"\" disabled=\"disabled\">-------------</option>\n"
          selected=nil if priority_countries.include?(selected)
        end
        
        countries = Iso3166.codes.map {|code|
          [Iso3166.localize(code), code]
        }
               
        return country_options + options_for_select(countries, selected)
      end
    end
    
    class InstanceTag
      def to_country_select_tag(priority_countries, options, html_options)
        html_options = html_options.stringify_keys
        add_default_name_and_id(html_options)
        value = value(object)
        content_tag("select",
          add_options(
            country_options_for_select(value, priority_countries),
            options, value
          ), html_options
        )
      end
    end
    
    class FormBuilder
      def country_select(method, priority_countries = nil, options = {}, html_options = {})
        @template.country_select(@object_name, method, priority_countries, options.merge(:object => @object), html_options)
      end
    end
  end
end

module IsoCountrySelect
  extend ActiveSupport::Concern
  
  def country_name(code)
    Iso3166.localize(code)
  end
  
end

ActionView::Base.send :include, IsoCountrySelect