# frozen_string_literal: true

class CleanupRemainingOrphanInvites < ActiveRecord::Migration[6.1]
  include Gitlab::Database::MigrationHelpers

  disable_ddl_transaction!

  TMP_INDEX_NAME = 'tmp_idx_members_with_orphaned_invites'

  QUERY_CONDITION = "invite_token IS NOT NULL AND user_id IS NOT NULL"

  def up
    membership = define_batchable_model('members')

    add_concurrent_index :members, :id, where: QUERY_CONDITION, name: TMP_INDEX_NAME

    membership.where(QUERY_CONDITION).pluck(:id).each_slice(10) do |group|
      membership.where(id: group).where(QUERY_CONDITION).update_all(invite_token: nil)
    end

    remove_concurrent_index_by_name :members, TMP_INDEX_NAME
  end

  def down
    remove_concurrent_index_by_name :members, TMP_INDEX_NAME if index_exists_by_name?(:members, TMP_INDEX_NAME)
  end
end