DEV: Replace custom Onebox blank implementation with ActiveSupport (#23827)

We have a custom implementation of #blank? in our Onebox helpers. This is likely a legacy from when Onebox was a standalone gem. This change replaces all usages with respective incarnations of #blank?, #present?, and #presence from ActiveSupport. It changes a bunch of "unless blank" to "if present" as well.

lib/onebox/engine/allowlisted_generic_onebox.rb

@@ -94,18 +94,18 @@ module Onebox
             html_entities = HTMLEntities.new
             d = { link: link }.merge(raw)
 
-            if !Onebox::Helpers.blank?(d[:title])
+            if d[:title].present?
               d[:title] = html_entities.decode(Onebox::Helpers.truncate(d[:title], 80))
             end
 
             d[:description] ||= d[:summary]
-            if !Onebox::Helpers.blank?(d[:description])
+            if d[:description].present?
               d[:description] = html_entities.decode(Onebox::Helpers.truncate(d[:description], 250))
             end
 
-            if !Onebox::Helpers.blank?(d[:site_name])
+            if d[:site_name].present?
               d[:domain] = html_entities.decode(Onebox::Helpers.truncate(d[:site_name], 80))
-            elsif !Onebox::Helpers.blank?(d[:domain])
+            elsif d[:domain].present?
               d[:domain] = "http://#{d[:domain]}" unless d[:domain] =~ %r{^https?://}
               d[:domain] = begin
                 URI(d[:domain]).host.to_s.sub(/^www\./, "")
@@ -118,15 +118,14 @@ module Onebox
             d[:image] = d[:image_secure_url] || d[:image_url] || d[:thumbnail_url] || d[:image]
             d[:image] = Onebox::Helpers.get_absolute_image_url(d[:image], @url)
             d[:image] = Onebox::Helpers.normalize_url_for_output(html_entities.decode(d[:image]))
-            d[:image] = nil if Onebox::Helpers.blank?(d[:image])
+            d[:image] = nil if d[:image].blank?
 
             d[:video] = d[:video_secure_url] || d[:video_url] || d[:video]
-            d[:video] = nil if Onebox::Helpers.blank?(d[:video])
+            d[:video] = nil if d[:video].blank?
 
-            d[:published_time] = d[:article_published_time] unless Onebox::Helpers.blank?(
-              d[:article_published_time],
-            )
-            if !Onebox::Helpers.blank?(d[:published_time])
+            d[:published_time] = d[:article_published_time] if d[:article_published_time].present?
+
+            if d[:published_time].present?
               d[:article_published_time] = Time.parse(d[:published_time]).strftime("%-d %b %y")
               d[:article_published_time_title] = Time.parse(d[:published_time]).strftime(
                 "%I:%M%p - %d %B %Y",
@@ -134,18 +133,18 @@ module Onebox
             end
 
             # Twitter labels
-            if !Onebox::Helpers.blank?(d[:label1]) && !Onebox::Helpers.blank?(d[:data1]) &&
+            if d[:label1].present? && d[:data1].present? &&
                  !!AllowlistedGenericOnebox.allowed_twitter_labels.find { |l|
                    d[:label1] =~ /#{l}/i
                  }
               d[:label_1] = Onebox::Helpers.truncate(d[:label1])
               d[:data_1] = Onebox::Helpers.truncate(d[:data1])
             end
-            if !Onebox::Helpers.blank?(d[:label2]) && !Onebox::Helpers.blank?(d[:data2]) &&
+            if d[:label2].present? && d[:data2].present? &&
                  !!AllowlistedGenericOnebox.allowed_twitter_labels.find { |l|
                    d[:label2] =~ /#{l}/i
                  }
-              if Onebox::Helpers.blank?(d[:label_1])
+              if d[:label_1].blank?
                 d[:label_1] = Onebox::Helpers.truncate(d[:label2])
                 d[:data_1] = Onebox::Helpers.truncate(d[:data2])
               else
@@ -154,8 +153,7 @@ module Onebox
               end
             end
 
-            if Onebox::Helpers.blank?(d[:label_1]) && !Onebox::Helpers.blank?(d[:price_amount]) &&
-                 !Onebox::Helpers.blank?(d[:price_currency])
+            if d[:label_1].blank? && d[:price_amount].present? && d[:price_currency].present?
               d[:label_1] = "Price"
               d[:data_1] = Onebox::Helpers.truncate(
                 "#{d[:price_currency].strip} #{d[:price_amount].strip}",
@@ -205,11 +203,11 @@ module Onebox
       end
 
       def has_text?
-        has_title? && !Onebox::Helpers.blank?(data[:description])
+        has_title? && data[:description].present?
       end
 
       def has_title?
-        !Onebox::Helpers.blank?(data[:title])
+        data[:title].present?
       end
 
       def is_image_article?
@@ -221,12 +219,11 @@ module Onebox
       end
 
       def has_image?
-        !Onebox::Helpers.blank?(data[:image])
+        data[:image].present?
       end
 
       def is_video?
-        data[:type] =~ %r{^video[/\.]} && data[:video_type] == "video/mp4" && # Many sites include 'videos' with text/html types (i.e. iframes)
-          !Onebox::Helpers.blank?(data[:video])
+        data[:type] =~ %r{^video[/\.]} && data[:video_type] == "video/mp4" && data[:video].present? # Many sites include 'videos' with text/html types (i.e. iframes)
       end
 
       def is_embedded?
@@ -267,7 +264,7 @@ module Onebox
       end
 
       def image_html
-        return if Onebox::Helpers.blank?(data[:image])
+        return if data[:image].blank?
 
         escaped_src = ::Onebox::Helpers.normalize_url_for_output(data[:image])
 

lib/onebox/engine/audio_com_onebox.rb

@@ -17,7 +17,7 @@ module Onebox
 
       def placeholder_html
         oembed = get_oembed
-        return if Onebox::Helpers.blank?(oembed.thumbnail_url)
+        return if oembed.thumbnail_url.blank?
         "<img src='#{oembed.thumbnail_url}' #{oembed.title_attr}>"
       end
 

lib/onebox/engine/facebook_media_onebox.rb

@@ -25,8 +25,7 @@ module Onebox
           HTML
         else
           html = Onebox::Engine::AllowlistedGenericOnebox.new(@url, @timeout).to_html
-          return if Onebox::Helpers.blank?(html)
-          html
+          html.presence
         end
       end
     end

lib/onebox/engine/google_docs_onebox.rb

@@ -22,7 +22,7 @@ module Onebox
         short_type = SHORT_TYPES[match[:endpoint].to_sym]
 
         description =
-          if Onebox::Helpers.blank?(og_data.description)
+          if og_data.description.blank?
             "This #{short_type.to_s.chop.capitalize} is private"
           else
             Onebox::Helpers.truncate(og_data.description, 250)

lib/onebox/engine/reddit_media_onebox.rb

@@ -46,8 +46,7 @@ module Onebox
           HTML
         else
           html = Onebox::Engine::AllowlistedGenericOnebox.new(@url, @timeout).to_html
-          return if Onebox::Helpers.blank?(html)
-          html
+          html.presence
         end
       end
     end

lib/onebox/engine/simplecast_onebox.rb

@@ -16,7 +16,7 @@ module Onebox
 
       def placeholder_html
         oembed = get_oembed
-        return if Onebox::Helpers.blank?(oembed.thumbnail_url)
+        return if oembed.thumbnail_url.blank?
         "<img src='#{oembed.thumbnail_url}' #{oembed.title_attr}>"
       end
 

lib/onebox/engine/sound_cloud_onebox.rb

@@ -17,7 +17,7 @@ module Onebox
 
       def placeholder_html
         oembed = get_oembed
-        return if Onebox::Helpers.blank?(oembed.thumbnail_url)
+        return if oembed.thumbnail_url.blank?
         "<img src='#{oembed.thumbnail_url}' #{oembed.title_attr}>"
       end
 

lib/onebox/engine/standard_embed.rb

@@ -82,9 +82,7 @@ module Onebox
             if (m["property"] && m["property"][/^twitter:(.+)$/i]) ||
                  (m["name"] && m["name"][/^twitter:(.+)$/i])
               value = (m["content"] || m["value"]).to_s
-              twitter[$1.tr("-:", "_").to_sym] ||= value unless (
-                Onebox::Helpers.blank?(value) || value == "0 minutes"
-              )
+              twitter[$1.tr("-:", "_").to_sym] ||= value if (value.present? && value != "0 minutes")
             end
           end
 
@@ -115,7 +113,7 @@ module Onebox
       def get_json_response
         oembed_url = get_oembed_url
 
-        return "{}" if Onebox::Helpers.blank?(oembed_url)
+        return "{}" if oembed_url.blank?
 
         begin
           Onebox::Helpers.fetch_response(oembed_url)
@@ -137,12 +135,12 @@ module Onebox
         end
 
         if html_doc
-          if Onebox::Helpers.blank?(oembed_url)
+          if oembed_url.blank?
             application_json = html_doc.at("//link[@type='application/json+oembed']/@href")
             oembed_url = application_json.value if application_json
           end
 
-          if Onebox::Helpers.blank?(oembed_url)
+          if oembed_url.blank?
             text_json = html_doc.at("//link[@type='text/json+oembed']/@href")
             oembed_url ||= text_json.value if text_json
           end
@@ -170,7 +168,7 @@ module Onebox
 
       def set_twitter_data_on_raw
         twitter = get_twitter
-        twitter.each { |k, v| @raw[k] ||= v unless Onebox::Helpers.blank?(v) }
+        twitter.each { |k, v| @raw[k] ||= v if v.present? }
       end
 
       def set_oembed_data_on_raw
@@ -185,13 +183,13 @@ module Onebox
 
       def set_favicon_data_on_raw
         favicon = get_favicon
-        @raw[:favicon] = favicon unless Onebox::Helpers.blank?(favicon)
+        @raw[:favicon] = favicon if favicon.present?
       end
 
       def set_description_on_raw
         unless @raw[:description]
           description = get_description
-          @raw[:description] = description unless Onebox::Helpers.blank?(description)
+          @raw[:description] = description if description.present?
         end
       end
     end

lib/onebox/engine/wistia_onebox.rb

@@ -34,7 +34,7 @@ module Onebox
 
       def placeholder_html
         oembed = get_oembed
-        return if Onebox::Helpers.blank?(oembed.thumbnail_url)
+        return if oembed.thumbnail_url.blank?
         "<img src='#{oembed.thumbnail_url}' #{oembed.title_attr}>"
       end
 

lib/onebox/engine/youtube_onebox.rb

@@ -78,7 +78,7 @@ module Onebox
         else
           # for channel pages
           html = Onebox::Engine::AllowlistedGenericOnebox.new(@url, @timeout).to_html
-          return if Onebox::Helpers.blank?(html)
+          return if html.blank?
           html.gsub!(%r{['"]//}, "https://")
           html
         end

lib/onebox/helpers.rb

@@ -165,9 +165,7 @@ module Onebox
         end
 
         http.request_head([uri.path, uri.query].join("?")) do |response|
-          code = response.code.to_i
-          return nil unless code === 200 || Onebox::Helpers.blank?(response.content_length)
-          return response.content_length
+          return response.code.to_i == 200 ? response.content_length.presence : nil
         end
       end
     end
@@ -190,27 +188,17 @@ module Onebox
       "<div style=\"background:transparent;position:relative;width:#{width}px;height:#{height}px;top:#{height}px;margin-top:-#{height}px;\" onClick=\"style.pointerEvents='none'\"></div>"
     end
 
-    def self.blank?(value)
-      if value.nil?
-        true
-      elsif String === value
-        value.empty? || !(/[[:^space:]]/ === value)
-      else
-        value.respond_to?(:empty?) ? !!value.empty? : !value
-      end
-    end
-
     def self.truncate(string, length = 50)
       return string if string.nil?
       string.size > length ? string[0...(string.rindex(" ", length) || length)] + "..." : string
     end
 
     def self.get(meta, attr)
-      (meta && !blank?(meta[attr])) ? sanitize(meta[attr]) : nil
+      (meta && meta[attr].present?) ? sanitize(meta[attr]) : nil
     end
 
     def self.sanitize(value, length = 50)
-      return nil if blank?(value)
+      return nil if value.blank?
       Sanitize.fragment(value).strip
     end
 

lib/onebox/json_ld.rb

@@ -13,7 +13,7 @@ module Onebox
     private
 
     def extract(doc)
-      return {} if Onebox::Helpers.blank?(doc)
+      return {} if doc.blank?
 
       doc
         .css('script[type="application/ld+json"]')

lib/onebox/normalizer.rb

@@ -14,14 +14,13 @@ module Onebox
     def method_missing(attr, *args, &block)
       value = get(attr, *args)
 
-      return nil if Onebox::Helpers.blank?(value)
+      return nil if value.blank?
 
       method_name = attr.to_s
       if method_name.end_with?(*integer_suffixes)
         value.to_i
       elsif method_name.end_with?(*url_suffixes)
-        result = Onebox::Helpers.normalize_url_for_output(value)
-        result unless Onebox::Helpers.blank?(result)
+        Onebox::Helpers.normalize_url_for_output(value).presence
       else
         value
       end

lib/onebox/open_graph.rb

@@ -25,7 +25,7 @@ module Onebox
     COLLECTIONS = %i[article_section article_section_color article_tag]
 
     def extract(doc)
-      return {} if Onebox::Helpers.blank?(doc)
+      return {} if doc.blank?
 
       data = {}
 
@@ -35,7 +35,7 @@ module Onebox
           if (m["property"] && m["property"][/\A(?:og|article|product):(.+)\z/i]) ||
                (m["name"] && m["name"][/\A(?:og|article|product):(.+)\z/i])
             value = (m["content"] || m["value"]).to_s
-            next if Onebox::Helpers.blank?(value)
+            next if value.blank?
             key = $1.tr("-:", "_").to_sym
             data[key] ||= value
             if key.in?(COLLECTIONS)
@@ -48,9 +48,7 @@ module Onebox
 
       # Attempt to retrieve the title from the meta tag
       title_element = doc.at_css("title")
-      if title_element && title_element.text
-        data[:title] ||= title_element.text unless Onebox::Helpers.blank?(title_element.text)
-      end
+      data[:title] ||= title_element.text if title_element && title_element.text.present?
 
       data
     end

spec/lib/onebox/helpers_spec.rb

@@ -1,19 +1,6 @@
 # frozen_string_literal: true
 
 RSpec.describe Onebox::Helpers do
-  describe ".blank?" do
-    it { expect(described_class.blank?("")).to be(true) }
-    it { expect(described_class.blank?(" ")).to be(true) }
-    it { expect(described_class.blank?("test")).to be(false) }
-    it { expect(described_class.blank?(%w[test testing])).to be(false) }
-    it { expect(described_class.blank?([])).to be(true) }
-    it { expect(described_class.blank?({})).to be(true) }
-    it { expect(described_class.blank?(nil)).to be(true) }
-    it { expect(described_class.blank?(true)).to be(false) }
-    it { expect(described_class.blank?(false)).to be(true) }
-    it { expect(described_class.blank?(a: "test")).to be(false) }
-  end
-
   describe ".truncate" do
     let(:test_string) { "Chops off on spaces" }
     it { expect(described_class.truncate(test_string)).to eq(test_string) }