First support of videos in issues, MRs and notes

* Registered video MIME types
* Currently supporting browser-supported formats with extensions that match the mime type

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/banzai/filter/video_link_filter.rb b/lib/banzai/filter/video_link_filter.rb
new file mode 100644
index 00000000000..0ae885708f7
--- /dev/null
+++ b/lib/banzai/filter/video_link_filter.rb
@@ -0,0 +1,42 @@
+module Banzai
+  module Filter
+
+    # HTML Filter that handles video uploads.
+
+    class VideoLinkFilter < HTML::Pipeline::Filter
+      include ActionView::Helpers::TagHelper
+      include ActionView::Context
+
+      EXTENSIONS = %w(.mov .mp4 .ogg .webm .flv)
+
+      def call
+        doc.search('img').each do |el|
+          if video?(el)
+            el.replace video_node(el)
+          end
+        end
+
+        doc
+      end
+
+      private
+
+      def video?(element)
+        EXTENSIONS.include? File.extname(element.attribute('src').value)
+      end
+
+      # Return a video tag Nokogiri node
+      #
+      def video_node(element)
+        vtag = content_tag(:video, "", {
+                            src: element.attribute('src').value,
+                            class: 'video-js', preload: 'auto',
+                            controls: true
+                            })
+
+        Nokogiri::HTML::DocumentFragment.parse(vtag)
+      end
+    end
+
+  end
+end