Synvert::Rewriter.new 'upgrade_rails_3_1_to_3_2', 'Upgrade rails from 3.1 to 3.2' do
  if_gem 'rails', {gte: '3.1.0'}

  within_file 'config/environments/development.rb' do
    # insert config.active_record.auto_explain_threshold_in_seconds = 0.5
    unless_exist_node type: 'send', receiver: {type: 'send', receiver: {type: 'send', message: 'config'}, message: 'active_record'}, message: 'auto_explain_threshold_in_seconds=' do
      insert 'config.active_record.auto_explain_threshold_in_seconds = 0.5'
    end
  end

  %w(config/environments/development.rb config/environments/test.rb).each do |file_pattern|
    within_file file_pattern do
      # insert config.active_record.mass_assignment_sanitizer = :strict
      unless_exist_node type: 'send', receiver: {type: 'send', receiver: {type: 'send', message: 'config'}, message: 'active_record'}, message: 'mass_assignment_sanitizer=' do
        insert 'config.active_record.mass_assignment_sanitizer = :strict'
      end
    end
  end

  todo <<-EOF
Make the following changes to your Gemfile.

    group :assets do
      gem 'sass-rails',   '~> 3.2.3'
      gem 'coffee-rails', '~> 3.2.1'
      gem 'uglifier',     '>= 1.0.3'
    end
  EOF
end