# Copyright 2015, Google Inc.
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require 'googleauth/signet'
require 'googleauth/credentials_loader'
require 'multi_json'

module Google
  module Auth
    # Small utility for normalizing scopes into canonical form
    module ScopeUtil
      ALIASES = {
        'email' => 'https://www.googleapis.com/auth/userinfo.email',
        'profile' => 'https://www.googleapis.com/auth/userinfo.profile',
        'openid' => 'https://www.googleapis.com/auth/plus.me'
      }.freeze

      def self.normalize(scope)
        list = as_array(scope)
        list.map { |item| ALIASES[item] || item }
      end

      def self.as_array(scope)
        case scope
        when Array
          scope
        when String
          scope.split(' ')
        else
          raise 'Invalid scope value. Must be string or array'
        end
      end
    end
  end
end