# This migration comes from acts_as_taggable_on_engine (originally 6)
if ActiveRecord.gem_version >= Gem::Version.new('5.0')
  class AddMissingIndexesOnTaggings < ActiveRecord::Migration[4.2]; end
else
  class AddMissingIndexesOnTaggings < ActiveRecord::Migration; end
end

AddMissingIndexesOnTaggings.class_eval do
  def change
    add_index :taggings, :tag_id unless index_exists? :taggings, :tag_id
    add_index :taggings, :taggable_id unless index_exists? :taggings,
                                                           :taggable_id
    add_index :taggings, :taggable_type unless index_exists? :taggings,
                                                             :taggable_type
    add_index :taggings, :tagger_id unless index_exists? :taggings, :tagger_id
    add_index :taggings, :context unless index_exists? :taggings, :context

    indexes
  end

  def indexes
    unless index_exists? :taggings, %i[tagger_id tagger_type]
      add_index :taggings, %i[tagger_id tagger_type]
    end

    unless index_exists? :taggings,
                         %i[taggable_id taggable_type tagger_id context],
                         name: 'taggings_idy'
      add_index :taggings, %i[taggable_id taggable_type tagger_id context],
                name: 'taggings_idy'
    end
  end
end