feat(gallery): update gallery item badge class after seen

app/components/attachment/gallery_item_component.rb

@@ -2,11 +2,12 @@
 
 class Attachment::GalleryItemComponent < ApplicationComponent
   include GalleryHelper
-  attr_reader :attachment
+  attr_reader :attachment, :seen_at
 
-  def initialize(attachment:, gallery_demande: false)
+  def initialize(attachment:, gallery_demande: false, seen_at: nil)
     @attachment = attachment
     @gallery_demande = gallery_demande
+    @seen_at = seen_at
   end
 
   def blob
@@ -77,7 +78,7 @@ class Attachment::GalleryItemComponent < ApplicationComponent
   def badge_updated_class
     class_names(
       "fr-badge fr-badge--sm" => true,
-      "fr-badge--new" => updated?
+      "fr-badge--new" => seen_at.present? && updated_at&.>(seen_at)
     )
   end
 end

app/controllers/instructeurs/dossiers_controller.rb

@@ -386,6 +386,7 @@ module Instructeurs
         .flatten
 
       @gallery_attachments = champs_attachments + commentaires_attachments
+      @pieces_jointes_seen_at = current_instructeur.follows.find_by(dossier: dossier)&.pieces_jointes_seen_at
     end
 
     private

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

@@ -5,4 +5,4 @@
 .fr-container
   .gallery.gallery-pieces-jointes{ "data-controller": "lightbox" }
     - @gallery_attachments.each do |attachment|
-      = render Attachment::GalleryItemComponent.new(attachment:)
+      = render Attachment::GalleryItemComponent.new(attachment:, seen_at: @pieces_jointes_seen_at)