# frozen_string_literal: true

class AddTemporaryIndexToMergeAccessLevels < Gitlab::Database::Migration[2.2]
  disable_ddl_transaction!
  milestone '16.6'

  INDEX_NAME = 'tmp_idx_protected_branch_merge_access_levels_on_id_with_group'

  def up
    # Temporary index to be removed in 16.7 https://gitlab.com/gitlab-org/gitlab/-/issues/430843
    add_concurrent_index(
      :protected_branch_merge_access_levels,
      %i[id],
      where: 'group_id IS NOT NULL',
      name: INDEX_NAME
    )
  end

  def down
    remove_concurrent_index_by_name(
      :protected_branch_merge_access_levels,
      INDEX_NAME
    )
  end
end