# Require all the necessary files to run TinyMCE
require 'tiny_mce/base'
require 'tiny_mce/option_validator'
require 'tiny_mce/spell_checker'
require 'tiny_mce/helpers'

module TinyMCE
  def self.install_or_update_tinymce
    require 'fileutils'
    orig = File.join(File.dirname(__FILE__), 'tiny_mce', 'assets', 'tiny_mce')
    dest = File.join(RAILS_ROOT, 'public', 'javascripts', 'tiny_mce')
    tiny_mce_js = File.join(dest, 'tiny_mce.js')

    unless File.exists?(tiny_mce_js) && FileUtils.identical?(File.join(orig, 'tiny_mce.js'), tiny_mce_js)
      if File.exists?(tiny_mce_js)
        # upgrade
        begin
          puts "Removing directory #{dest}..."
          FileUtils.rm_rf dest
          puts "Creating directory #{dest}..."
          FileUtils.mkdir_p dest
          puts "Copying TinyMCE to #{dest}..."
          FileUtils.cp_r "#{orig}/.", dest
          puts "Successfully updated TinyMCE."
        rescue
          puts 'ERROR: Problem updating TinyMCE. Please manually copy '
          puts orig
          puts 'to'
          puts dest
        end
      else
        # install
        begin
          puts "Creating directory #{dest}..."
          FileUtils.mkdir_p dest
          puts "Copying TinyMCE to #{dest}..."
          FileUtils.cp_r "#{orig}/.", dest
          puts "Successfully installed TinyMCE."
        rescue
          puts "ERROR: Problem installing TinyMCE. Please manually copy "
          puts orig
          puts "to"
          puts dest
        end
      end
    end

    tiny_mce_yaml_filepath = File.join(RAILS_ROOT, 'config', 'tiny_mce.yml')
    unless File.exists?(tiny_mce_yaml_filepath)
      File.open(tiny_mce_yaml_filepath, 'w') do |f|
        f.puts '# Here you can specify default options for TinyMCE across all controllers'
        f.puts '#'
        f.puts '# theme: advanced'
        f.puts '# plugins:'
        f.puts '#  - table'
        f.puts '#  - fullscreen'
      end
      puts "Written configuration example to #{tiny_mce_yaml_filepath}"
    end
  end

  module Base
    include TinyMCE::OptionValidator
    include TinyMCE::SpellChecker
  end
end

# Load up the available configuration options (we do it here because
# the result doesn't, so we don't want to load it per request)
TinyMCE::OptionValidator.load

# Include the TinyMCE methods and TinyMCE Helpers into ActionController::Base

if defined?(Rails) && defined?(ActionController)
  ActionController::Base.send(:include, TinyMCE::Base)
  ActionController::Base.send(:helper, TinyMCE::Helpers)
  TinyMCE.install_or_update_tinymce
end