require 'login_system'

class ApplicationController < ActionController::Base
  include LoginSystem
  prepend_view_path("#{TRUSTY_CMS_ROOT}/app/views")

  protect_from_forgery with: :exception
  before_action :authenticate_user!
  before_action :set_timezone
  before_action :set_user_locale
  before_action :set_javascripts_and_stylesheets
  before_action :force_utf8_params if RUBY_VERSION =~ /1\.9/
  before_action :set_standard_body_style, only: %i[new edit update create]
  before_action :set_mailer
  before_action :set_paper_trail_whodunnit

  attr_accessor :trusty_config, :cache
  attr_reader :pagination_parameters
  helper_method :pagination_parameters

  def initialize
    super
    @trusty_config = TrustyCms::Config
  end

  def after_sign_in_path_for(_resource)
    admin_pages_path
  end

  def template_name
    case action_name
    when 'index'
      'index'
    when 'new', 'create'
      'new'
    when 'show'
      'show'
    when 'edit', 'update'
      'edit'
    when 'remove', 'destroy'
      'remove'
    else
      action_name
    end
  end

  private

  def set_mailer
    ActionMailer::Base.default_url_options[:host] = request.host_with_port
  end

  def set_user_locale
    I18n.locale = current_user && !current_user.locale.blank? ? current_user.locale : TrustyCms::Config['default_locale']
  end

  def set_timezone
    Time.zone = !TrustyCms::Config['local.timezone'].nil? && TrustyCms::Config['local.timezone'].empty? ? Time.zone_default : TrustyCms::Config['local.timezone']
  end

  def set_javascripts_and_stylesheets
    @stylesheets ||= []
    @stylesheets.concat %w(admin/main)
    @javascripts ||= []
  end

  def set_standard_body_style
    @body_classes ||= []
    @body_classes.concat(%w(reversed))
  end

  # When using TrustyCms with Ruby 1.9, the strings that come in from forms are ASCII-8BIT encoded.
  # That causes problems, especially when using special chars and with certain DBs, like DB2
  # That's why we force the encoding of the params to UTF-8
  # That's what's happening in Rails 3, too: https://github.com/rails/rails/commit/25215d7285db10e2c04d903f251b791342e4dd6a
  #
  # See http://stackoverflow.com/questions/8268778/rails-2-3-9-encoding-of-query-parameters
  # See https://rails.lighthouseapp.com/projects/8994/tickets/4807
  # See http://jasoncodes.com/posts/ruby19-rails2-encodings (thanks for the following code, Jason!)
  def force_utf8_params
    traverse = lambda do |object, block|
      if object.is_a?(Hash)
        object.each_value { |o| traverse.call(o, block) }
      elsif object.is_a?(Array)
        object.each { |o| traverse.call(o, block) }
      else
        block.call(object)
      end
      object
    end
    force_encoding = lambda do |o|
      o.force_encoding(Encoding::UTF_8) if o.respond_to?(:force_encoding)
    end
    traverse.call(params, force_encoding)
  end
end