require 'pathname'
require 'fileutils'
require 'tempfile'
require 'generators/utils'
include FileUtils

module Venomi
  module RailsAdmin

    if defined? ::Rails
      @rails_root = Rails.root.to_s
      @rails_admin_root =  "#{@rails_root}/config/initializers/rails_admin.rb"
    else
      # Debug
      @gem_root = Pathname.new File.expand_path('../../', __FILE__).to_s
      @rails_admin_root = "#{@gem_root}/debug/initializers/rails_admin.rb"
    end

    class << self
      include Venomi::Generators::Utils::InstanceMethods

      def configure
        if file?(@rails_admin_root)
          unless file_include?(@rails_admin_root, "config.model Translation do")
            replace(@rails_admin_root, "RailsAdmin.config do |config|", ("RailsAdmin.config do |config|\n" + @translation))
          end

          unless file_include?(@rails_admin_root, " new do")
            replace(@rails_admin_root, " new", @new)
          end

          unless file_include?(@rails_admin_root, " delete do")
            replace(@rails_admin_root, " delete", @delete)
          end
        end
      end

      def rollback
        if file? @rails_admin_root
          text = File.read(@rails_admin_root)
          text.gsub!(@delete, "    delete\n")
          text.gsub!(@new, "    new\n")
          text.gsub!(@translation, "")
          File.open(@rails_admin_root, "w") {|file| file.puts text }
        end
      end
    end

    @new = <<-MSG
    new do
      except [:Translation]
    end
    MSG

    @delete = <<-MSG
    delete do
      except [:Translation]
    end
    MSG

    @translation = <<-MSG
    config.model Translation do
      list do
        field :key
        field :value
      end
      edit do
        field :key do
          read_only true
        end
        field :value
      end
    end
    MSG

  end
end