# License: AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later
require 'qx'

module UpdateCustomFieldJoins

  # Delete custom field joins that have the same custom field master
  # Favor the most recent custom field join
  def self.delete_dupes(supporter_ids)
    # Bulk remove duplicate custom field joins, favoring the most recent one
    ids = Qx.select('ARRAY_AGG(custom_field_joins.id ORDER BY custom_field_joins.created_at DESC) AS ids')
      .from(:custom_field_joins)
      .where("custom_field_joins.supporter_id IN ($ids)", ids: supporter_ids)
      .join("custom_field_masters cfms", "cfms.id = custom_field_joins.custom_field_master_id")
      .group_by("cfms.name")
      .having("COUNT(custom_field_joins) > 1")
      .execute.map{|h| h['ids'][1..-1]}.flatten
    return unless ids.any?
    Qx.delete_from(:custom_field_joins)
      .where("id IN ($ids)", ids: ids)
      .execute
  end

end