module PrettyMailer

# File lib/pretty_mailer.rb, line 9
def included base
  base.alias_method_chain :collect_responses_and_parts_order, :inline_styles
end

# File lib/pretty_mailer.rb, line 29
def apply_inline_styles response, stylesheets
  body = HTML.new response[:body]
  AssetParser.new(stylesheets: [*stylesheets]).each_selector do |selector, declarations, specificity|
    body.add_rules selector, declarations, specificity
  end
  body.reduce_specificities!
  response[:body] = body.to_s
  response
end

# File lib/pretty_mailer.rb, line 15
def collect_responses_and_parts_order_with_inline_styles headers
  responses, parts_order = collect_responses_and_parts_order_without_inline_styles headers
  unless headers[:css].blank?
    responses.map! do |response|
      if response[:content_type] == 'text/html'
        apply_inline_styles response, headers[:css]
      else
        response
      end
    end
  end
  [responses, parts_order]
end