feat(gallery): display large variant for rare image types

app/jobs/image_processor_job.rb

@@ -38,6 +38,9 @@ class ImageProcessorJob < ApplicationJob
     blob.attachments.each do |attachment|
       next unless attachment&.representable?
       attachment.representation(resize_to_limit: [400, 400]).processed
+      if attachment.blob.content_type.in?(RARE_IMAGE_TYPES)
+        attachment.variant(resize_to_limit: [2000, 2000]).processed
+      end
     end
   end
 

app/views/instructeurs/dossiers/pieces_jointes.html.haml

@@ -19,7 +19,8 @@
             = render Attachment::ShowComponent.new(attachment: attachment, truncate: true)
 
           - elsif blob.variable? && blob.content_type.in?(AUTHORIZED_IMAGE_TYPES)
-            = link_to image_url(blob.url), title: "#{champ.libelle} -- #{blob.filename}", data: { src: blob.url }, class: 'gallery-link' do
+            - blob_url = blob.content_type.in?(RARE_IMAGE_TYPES) ? attachment.variant(resize_to_limit: [2000, 2000]).processed.url : blob.url
+            = link_to image_url(blob_url), title: "#{champ.libelle} -- #{blob.filename}", data: { src: blob.url }, class: 'gallery-link' do
               .thumbnail
                 = image_tag(attachment.variant(resize_to_limit: [400, 400]).processed.url, loading: :lazy)
                 .fr-btn.fr-btn--tertiary.fr-btn--icon-left.fr-icon-eye{ role: :button }

app/views/shared/champs/piece_justificative/_show.html.haml

@@ -16,7 +16,8 @@
                   = 'Visualiser'
 
           - elsif blob.variable? && blob.content_type.in?(AUTHORIZED_IMAGE_TYPES)
-            = link_to image_url(blob.url), title: "#{champ.libelle} -- #{blob.filename}", data: { src: blob.url }, class: 'gallery-link' do
+            - blob_url = blob.content_type.in?(RARE_IMAGE_TYPES) ? attachment.variant(resize_to_limit: [2000, 2000]).processed.url : blob.url
+            = link_to image_url(blob_url), title: "#{champ.libelle} -- #{blob.filename}", data: { src: blob.url }, class: 'gallery-link' do
               .thumbnail
                 = image_tag(attachment.variant(resize_to_limit: [400, 400]).processed.url, loading: :lazy)
                 .fr-btn.fr-btn--tertiary.fr-btn--icon-left.fr-icon-eye{ role: :button }

config/initializers/authorized_content_types.rb

@@ -15,6 +15,10 @@ AUTHORIZED_IMAGE_TYPES = [
   'image/vnd.dwg' # multimedia x 137 auto desk
 ]
 
+RARE_IMAGE_TYPES = [
+  'image/tiff' # multimedia x 3985
+]
+
 AUTHORIZED_CONTENT_TYPES = AUTHORIZED_IMAGE_TYPES + AUTHORIZED_PDF_TYPES + [
   # multimedia
   'video/mp4', # multimedia x 2075

spec/jobs/image_processor_job_spec.rb

@@ -63,7 +63,6 @@ describe ImageProcessorJob, type: :job do
   end
 
   describe 'create representation' do
-    let(:file) { fixture_file_upload('spec/fixtures/files/logo_test_procedure.png', 'image/png') }
     let(:blob_info) do
       {
         filename: file.original_filename,
@@ -81,6 +80,9 @@ describe ImageProcessorJob, type: :job do
       blob
     end
 
+    context "when type image is usual" do
+      let(:file) { fixture_file_upload('spec/fixtures/files/logo_test_procedure.png', 'image/png') }
+
       context "when representation is not required" do
         it "it does not create blob representation" do
           expect { described_class.perform_now(blob) }.not_to change { ActiveStorage::VariantRecord.count }
@@ -98,6 +100,19 @@ describe ImageProcessorJob, type: :job do
       end
     end
 
+    context "when type image is rare" do
+      let(:file) { fixture_file_upload('spec/fixtures/files/pencil.tiff', 'image/tiff') }
+
+      before do
+        allow(blob).to receive(:representation_required?).and_return(true)
+      end
+
+      it "creates a second variant" do
+        expect { described_class.perform_now(blob) }.to change { ActiveStorage::VariantRecord.count }.by(2)
+      end
+    end
+  end
+
   describe 'watermark' do
     context "when watermark is already done" do
       before do