Revert "Merge branch '29284-video-preview-not-working' into 'master'"

This reverts merge request !17581

changelogs/unreleased/29284-video-preview-not-working.yml

----
-title: Fix inline rendering of videos for uploads with uppercase file extensions
-merge_request: 17581
-author:
-type: fixed

lib/banzai/filter/video_link_filter.rb

@@ -8,8 +8,8 @@ module Banzai
     # a "Download" link in the case the video cannot be played.
     class VideoLinkFilter < HTML::Pipeline::Filter
       def call
-        doc.xpath('descendant-or-self::img[not(ancestor::a)]').each do |el|
-          el.replace(video_node(doc, el)) if has_video_extension?(el)
+        doc.xpath(query).each do |el|
+          el.replace(video_node(doc, el))
         end
 
         doc
@@ -17,10 +17,22 @@ module Banzai
 
       private
 
-      def has_video_extension?(element)
-        src_attr = context[:asset_proxy_enabled] ? 'data-canonical-src' : 'src'
+      def query
+        @query ||= begin
+          src_query = UploaderHelper::SAFE_VIDEO_EXT.map do |ext|
+            "'.#{ext}' = substring(@src, string-length(@src) - #{ext.size})"
+          end
+
+          if context[:asset_proxy_enabled].present?
+            src_query.concat(
+              UploaderHelper::SAFE_VIDEO_EXT.map do |ext|
+                "'.#{ext}' = substring(@data-canonical-src, string-length(@data-canonical-src) - #{ext.size})"
+              end
+            )
+          end
 
-        element.attr(src_attr).downcase.end_with?(*UploaderHelper::SAFE_VIDEO_EXT)
+          "descendant-or-self::img[not(ancestor::a) and (#{src_query.join(' or ')})]"
+        end
       end
 
       def video_node(doc, element)

spec/lib/banzai/filter/video_link_filter_spec.rb

@@ -17,7 +17,8 @@ describe Banzai::Filter::VideoLinkFilter do
 
   let(:project) { create(:project, :repository) }
 
-  shared_examples 'replaces the image tag with a video tag' do |ext|
+  context 'when the element src has a video extension' do
+    UploaderHelper::SAFE_VIDEO_EXT.each do |ext|
       it "replaces the image tag 'path/video.#{ext}' with a video tag" do
         container = filter(link_to_image("/path/video.#{ext}")).children.first
 
@@ -38,12 +39,6 @@ describe Banzai::Filter::VideoLinkFilter do
         expect(link['target']).to eq '_blank'
       end
     end
-
-  context 'when the element src has a video extension' do
-    UploaderHelper::SAFE_VIDEO_EXT.each do |ext|
-      it_behaves_like 'replaces the image tag with a video tag', ext
-      it_behaves_like 'replaces the image tag with a video tag', ext.upcase
-    end
   end
 
   context 'when the element src is an image' do