class Doorkeeper::ApplicationScopesGenerator

def self.next_migration_number(path)
  ActiveRecord::Generators::Base.next_migration_number(path)
end

def application_scopes
  if oauth_applications_exists? && !scopes_column_exists?
    migration_template(
      'add_scopes_to_oauth_applications.rb',
      'db/migrate/add_scopes_to_oauth_applications.rb'
    )
  end
end

def oauth_applications_exists?
  ActiveRecord::Base.connection.table_exists? :oauth_applications
end

def scopes_column_exists?
  ActiveRecord::Base.connection.column_exists?(
    :oauth_applications,
    :scopes
  )
end