Class: Image::DragonflyMediaUrlReplacer

Inherits:
BaseService show all
Defined in:
app/services/image/dragonfly_media_url_replacer.rb

Overview

Service object: dragonfly media url replacer.

Instance Attribute Summary

Attributes inherited from BaseService

#options

Instance Method Summary collapse

Methods inherited from BaseService

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

Constructor Details

This class inherits a constructor from BaseService

Instance Method Details

#process(articles: nil, limit: nil) ⇒ Object 



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# File 'app/services/image/dragonfly_media_url_replacer.rb', line 4

def process(articles: nil, limit: nil)
  logger.tagged('Image::DragonflyMediaUrlReplacer') do
    dt = DragonflyTranslator.new
    articles ||= Article.where("solution like '%/media/%'")
    articles = articles.limit(limit) if limit.present?
    results = []
    errors = []
    index = 0
    total = articles.size
    articles.each do |article|
      index += 1
      puts "[#{index}/#{total}] Evaluating article #{article.id}"
      html_fragment = article.solution
      # e.g src="/media/W1siZiIsIjIwMTUvMDYvMDEvOTdib2Fuc3JhY19WaWV3aW5nX3ZpZGVvc19vbl90YWJsZXQucG5nIl0sWyJwIiwidGh1bWIiLCI2MDB4NjAwXHUwMDNlIl1d/2c06076272df86f5/Viewing_videos_on_tablet.jpg"
      # should return
      # 1.	W1siZiIsIjIwMTUvMDYvMDEvOTdib2Fuc3JhY19WaWV3aW5nX3ZpZGVvc19vbl90YWJsZXQucG5nIl0sWyJwIiwidGh1bWIiLCI2MDB4NjAwXHUwMDNlIl1d/2c06076272df86f5
      # 2.
      # 3.	Viewing_videos_on_tablet
      # 4.	jpg
      r = %r{/media/(\S+)(/\S*)?/(\w+)\.?([a-zA-Z]{3})?}

      html_changed = false

      new_frag = html_fragment.gsub(r) do |match|
        puts "match: #{match}"
        begin
          # DragonflyTranslator will process the url
          result = dt.process(match, image_datetime: article.created_at)
          results << [article.id, match, result]
          html_changed = true
        rescue StandardError => e
          errors << [article.id, match, e.to_s]
          result = match # keep original
        end
        result
      end
      article.update_columns(solution: new_frag, updated_at: Time.current) if html_changed
    end
    puts "Results:\n----------\n"
    puts results.join("\n")
    puts "\nErrors:\n----------\n"
    puts errors.join("\n")
  end
end