Shared feed import validation message: Format URLs using Markdown (#1897

)

When trying to import media from a shared feed that already exist in the target workspace, return the existing item URLs in the error message as Markdown, so they can be better displayed on the frontend.

Reference: CV2-4631.

app/models/cluster.rb

@@ -38,7 +38,7 @@ def import_medias_to_team(team, claim_title, claim_context, parent_id = nil)
       existing_items << existing_item
       existing_item.nil?
     end
-    raise ActiveRecord::RecordNotUnique.new(I18n.t(:shared_feed_imported_media_already_exist, urls: existing_items.map(&:full_url).uniq.compact_blank.join(', '))) if from_project_media.nil?
+    raise ActiveRecord::RecordNotUnique.new(I18n.t(:shared_feed_imported_media_already_exist, urls: existing_items.uniq.compact_blank.collect{ |pm| "•︎ [#{pm.title}](#{pm.full_url})" }.join("\n"))) if from_project_media.nil?
     parent = nil
     if parent_id.nil?
       parent = self.import_media_to_team(team, from_project_media, claim_title, claim_context)

config/locales/en.yml

@@ -822,7 +822,10 @@ en:
   send_every_must_be_a_list_of_days_of_the_week: must be a list of days of the week.
   send_on_must_be_in_the_future: can't be in the past.
   cant_delete_default_folder: The default folder can't be deleted
-  shared_feed_imported_media_already_exist: "No media to import. All media items from this item already exist in your workspace: %{urls}"
+  shared_feed_imported_media_already_exist: |-
+    No media eligible to be imported into your workspace.
+    The media selected to import already exist in your workspace in the following items:
+    %{urls}
   info:
     messages:
       sent_to_trash_by_rule: '"%{item_title}" has been sent to trash by an automation