Class: Seo::ImageMissingSizeFiller

Inherits:
BaseService show all
Defined in:
app/services/seo/image_missing_size_filler.rb

Defined Under Namespace

Classes: Result

Instance Method Summary collapse

Methods inherited from BaseService

#initialize, #log_debug, #log_error, #log_info, #log_warning, #logger, #options, #tagged_logger

Constructor Details

This class inherits a constructor from BaseService

Instance Method Details

#process(html_fragment) ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'app/services/seo/image_missing_size_filler.rb', line 8

def process(html_fragment)
  logger.tagged('Seo::ImageMissingSizeFiller') do
    html_doc = Nokogiri::HTML(html_fragment)
    html_doc.xpath('//img').each do |img|
      if (img_url = img['src'].presence) && (img['width'].blank? || img['height'].blank?)
        # First, check if this is an image from our database
        if (img_id = img['data-image-id'].presence) && (dbimg = Image.find_by(id: img_id))
          if dbimg.attachment_width && dbimg.attachment_height
            img['width'] = dbimg.attachment_width
            img['height'] = dbimg.attachment_height
          end
        else
          # Parse URL and add host for local images
          uri = begin
            Addressable::URI.parse(img_url)
          rescue StandardError
            nil
          end
          if uri && uri.host.blank?
             uri.host = WEB_HOSTNAME_WITHOUT_PORT
             unless APP_PORT_NUMBER == 443
               uri.port = APP_PORT_NUMBER
             end
             uri.scheme = 'https'
             img_url = uri.to_s
          end

          # Use Vips to read image dimensions
          dimensions = fetch_image_dimensions(img_url)
          if dimensions
            img['width'] = dimensions[:width]
            img['height'] = dimensions[:height]
          end
        end
      end
    end
    html_out = html_doc.at('body')&.inner_html.presence&.html_safe

    Result.new(html_out: html_out)
  end
end