Refactored project archive. Improved MR usability form

app/controllers/repositories_controller.rb

@@ -27,22 +27,14 @@ class RepositoriesController < ApplicationController
       render_404 and return 
     end
 
-    ref = params[:ref] || @project.root_ref
-    commit = @project.commit(ref)
-    render_404 and return unless commit
 
-    # Build file path
-    file_name = @project.code + "-" + commit.id.to_s + ".tar.gz"
-    storage_path = File.join(Rails.root, "tmp", "repositories", @project.code)
-    file_path = File.join(storage_path, file_name)
+    file_path = @project.archive_repo(params[:ref])
 
-    # Create file if not exists
-    unless File.exists?(file_path)
-      FileUtils.mkdir_p storage_path
-      file = @project.repo.archive_to_file(ref, nil,  file_path)
+    if file_path
+      # Send file to user
+      send_file file_path
+    else
+      render_404
     end
-
-    # Send file to user
-    send_file file_path
   end
 end