# This service list all existent Lfs objects in a repository
module Projects
  module LfsPointers
    class LfsListService < BaseService
      REV = 'HEAD'.freeze

      # Retrieve all lfs blob pointers and returns a hash
      # with the structure { lfs_file_oid => lfs_file_size }
      def execute
        return {} unless project&.lfs_enabled?

        Gitlab::Git::LfsChanges.new(project.repository, REV)
                               .all_pointers
                               .map! { |blob| [blob.lfs_oid, blob.lfs_size] }
                               .to_h
      end
    end
  end
end
