Always use jpg for social share images

webp support among social appears to still be patchy.

REDMINE-20770

app/helpers/pageflow/social_share_helper.rb

@@ -58,8 +58,11 @@ def social_share_entry_image_tags(entry)
       image_file = find_file_in_entry(ImageFile, entry.share_image_id, entry)
 
       if image_file
-        image_url = image_file.thumbnail_url(:medium)
-        share_images.push(image_url: image_url, width: image_file.width, height: image_file.height)
+        image_url = image_file.thumbnail_url(
+          image_file.output_present?(:social) ? :social : :medium
+        )
+
+        share_images.push(image_url:, width: image_file.width, height: image_file.height)
       else
         entry.pages.each do |page|
           break if share_images.size >= 4

app/models/pageflow/image_file.rb

@@ -59,6 +59,7 @@ def attachment_styles(attachment)
                            format: panorama_format,
                            convert_options: '-quality 90 -interlace Plane'}
         )
+        .merge(social_image_styles)
     end
 
     def url
@@ -88,6 +89,16 @@ def save_image_dimensions
     rescue Paperclip::Errors::NotIdentifiedByImageMagickError
     end
 
+    def social_image_styles
+      if output_present?(:social)
+        {social: {geometry: '1024x1024>',
+                  format: :jpg,
+                  convert_options: '-quality 70 -interlace Plane'}}
+      else
+        {}
+      end
+    end
+
     def style_defaults
       if output_present?(:webp)
         {format: :webp, processors: [:pageflow_webp]}
@@ -97,7 +108,7 @@ def style_defaults
     end
 
     def set_output_presences
-      self.output_presences = {webp: true} if entry&.feature_state('webp_images')
+      self.output_presences = {webp: true, social: true} if entry&.feature_state('webp_images')
     end
   end
 end

spec/helpers/pageflow/social_share_helper_spec.rb

@@ -158,6 +158,31 @@ module Pageflow
         expect(html).to have_css("meta[content=\"#{image_file.thumbnail_url(:medium)}\"][name=\"twitter:image:src\"]", visible: false, count: 1)
       end
 
+      it 'uses jpg image if available' do
+        entry = PublishedEntry.new(create(:entry, :published))
+        image_file = create_used_file(
+          :image_file,
+          entry:,
+          width: 1200,
+          height: 600,
+          output_presences: {webp: true, social: true}
+        )
+        entry.revision.share_image_id = image_file.perma_id
+
+        html = helper.social_share_entry_image_tags(entry)
+
+        expect(html).to have_css(
+          "meta[content=\"#{image_file.thumbnail_url(:social)}\"][property=\"og:image\"]",
+          visible: false,
+          count: 1
+        )
+        expect(html).to have_css(
+          "meta[content=\"#{image_file.thumbnail_url(:social)}\"][name=\"twitter:image:src\"]",
+          visible: false,
+          count: 1
+        )
+      end
+
       it 'renders up to three open graph image meta tags for page thumbnails' do
         entry = PublishedEntry.new(create(:entry, :published))
         image_file1 = create_used_file(:image_file, entry: entry, width: 1200, height: 600)

spec/models/pageflow/image_file_spec.rb

@@ -71,6 +71,13 @@ module Pageflow
         expect(styles[:panorama_medium].processor_options[:geometry]).to eq('100%')
       end
 
+      it 'does generate social style by default' do
+        image_file = build(:image_file, :uploading, width: 2000, height: 1000)
+        styles = image_file.attachment.styles
+
+        expect(styles).not_to have_key(:social)
+      end
+
       describe 'with webp outputs' do
         it 'turns jpg file into webp files' do
           Pageflow.config.thumbnail_styles[:square] = {
@@ -94,6 +101,21 @@ module Pageflow
           expect(styles[:medium][:processors]).to eq([:pageflow_webp])
         end
       end
+
+      describe 'with social output' do
+        it 'keeps social image as jpg for compatibility reasons' do
+          image_file = build(:image_file,
+                             :uploading,
+                             file_name: 'image.jpg',
+                             output_presences: {
+                               social: true
+                             })
+
+          styles = image_file.attachment_styles(image_file.attachment)
+
+          expect(styles[:social][:format]).to eq(:jpg)
+        end
+      end
     end
 
     describe 'basename' do
@@ -128,7 +150,7 @@ module Pageflow
 
         image_file.attachment.reprocess!
 
-        expect(image_file.reload.present_outputs).to eq([:webp])
+        expect(image_file.reload.present_outputs).to eq([:webp, :social])
       end
 
       it 'does not fail if entry is missing' do