fix first party download from preview

lib/submitters.rb

@@ -25,6 +25,8 @@ module Submitters
     drv scr ins isp mst paf prf shb shs slk ws wsc inf1 inf2
   ].freeze)
 
+  FILES_TTL = 5.minutes
+
   module_function
 
   def search(current_user, submitters, keyword)
@@ -254,6 +256,36 @@ module Submitters
     true
   end
 
+  def build_document_urls(submitter, ttl: FILES_TTL)
+    filename_format = AccountConfig.find_or_initialize_by(account_id: submitter.account_id,
+                                                          key: AccountConfig::DOCUMENT_FILENAME_FORMAT_KEY)&.value
+
+    Submitters.select_attachments_for_download(submitter).map do |attachment|
+      ActiveStorage::Blob.proxy_path(
+        attachment.blob,
+        expires_at: ttl.from_now.to_i,
+        filename: Submitters.build_document_filename(submitter, attachment.blob, filename_format)
+      )
+    end
+  end
+
+  def build_combined_url(submitter, ttl: FILES_TTL)
+    return if submitter.submission.submitters.exists?(completed_at: nil)
+    return if submitter.submission.submitters.order(:completed_at).last != submitter
+
+    attachment = submitter.submission.combined_document_attachment
+    attachment ||= Submissions::EnsureCombinedGenerated.call(submitter)
+
+    filename_format = AccountConfig.find_or_initialize_by(account_id: submitter.account_id,
+                                                          key: AccountConfig::DOCUMENT_FILENAME_FORMAT_KEY)&.value
+
+    ActiveStorage::Blob.proxy_path(
+      attachment.blob,
+      expires_at: ttl.from_now.to_i,
+      filename: Submitters.build_document_filename(submitter, attachment.blob, filename_format)
+    )
+  end
+
   def populate_completed_is_first
     Account.find_each do |account|
       submissions_index = {}