Code sample - connection to Google Cloud Platform API for Adming directory user creation

email_account_creator.rb

require 'google/apis/admin_directory_v1'
require 'googleauth'

module GoogleIntegration
  class EmailAccountCreator
    def initialize(account)
      @account     = account
    end

    def call
      begin
        service = service_account
        user_object = configured_user_object

        service.insert_user(user_object)

        @account.update!(internal_email: email_string)
      rescue => e
        puts "#{Time.now.in_time_zone('Mountain Time (US & Canada)')} | email_account_creator - Error: #{e.message}"
      end
    end

    private

    def service_account
      service = Google::Apis::AdminDirectoryV1::DirectoryService.new
      service.client_options.application_name = "tomarket production"
      @g_scopes = [Google::Apis::AdminDirectoryV1::AUTH_ADMIN_DIRECTORY_USER, Google::Apis::AdminDirectoryV1::AUTH_ADMIN_DIRECTORY_USER_ALIAS]
      @config = {
        client_email: ENV['GOOGLE_TOMARKET_CLIENT_EMAIL'],
        client_id: ENV['GOOGLE_TOMARKET_CLIENT_ID'],
        private_key_id: ENV['GOOGLE_TOMARKET_PRIVATE_KEY_ID'],
        private_key: ENV['GOOGLE_TOMARKET_PRIVATE_KEY'],
        type: "service_account"
      }

      service.authorization =Google::Auth::ServiceAccountCredentials.make_creds(
        scope: @g_scopes,
        json_key_io: StringIO.new(@config.to_json, 'r')
      )      
      
      authorization = service.authorization
      auth_client = authorization.dup
      auth_client.sub = ENV['TOMARKET_ADMIN_EMAIL']
      auth_client.fetch_access_token!
      service.authorization = auth_client
      service
    end

    def configured_user_object
      Google::Apis::AdminDirectoryV1::User.new(
        name: {
          given_name: @account.name,
          family_name: @account.name,
          full_name: @account.name
        },
        password: ENV['GOOGLE_TOMARKET_MASTER_GMAIL_PASSWORD'],
        primary_email: email_string
      )
    end

    def email_string
      @account.name.downcase.gsub(" ","").gsub(/\W/,'') + "@tomarket.farm"
    end

  end
end