scinote-web/app/models/concerns/prefixed_id_model.rb

# frozen_string_literal: true

module PrefixedIdModel
  extend ActiveSupport::Concern

  included do
    begin
      indexdef = "CREATE INDEX index_#{table_name}_on_#{name.underscore}_code"\
      " ON public.#{table_name} USING gin ((('#{self::ID_PREFIX}'::text || id)) gin_trgm_ops)"

      index_exists = ActiveRecord::Base.connection.execute(
        "SELECT indexdef FROM pg_indexes WHERE tablename NOT LIKE 'pg%';"
      ).to_a.map(&:values).flatten.include?(indexdef)

      # rubocop:disable Rails/Output
      puts("\nWARNING missing index\n#{indexdef}\nfor prefixed id model #{name}!\n\n") unless index_exists
      # rubocop:enable Rails/Output
    rescue ActiveRecord::NoDatabaseError, ActiveRecord::ConnectionNotEstablished
      # only applicable during build and when setting up project
    end

    self::PREFIXED_ID_SQL = "('#{self::ID_PREFIX}' || #{table_name}.id)"

    def code
      "#{self.class::ID_PREFIX}#{id}"
    end
  end
end