def authorize_with_services
  begin
  self.client = Google::APIClient.new(application_name: 'Playground', application_version: '1')

    p12 = OpenSSL::PKCS12.create('notasecret', 'descriptor',
                               OpenSSL::PKey.read(ENV['PRIVATE_KEY']),
                               OpenSSL::X509::Certificate.new(ENV['CERT']))

    p12_binary = p12.to_der

  self.client.authorization = Signet::OAuth2::Client.new(
    token_credential_uri: 'https://accounts.google.com/o/oauth2/token',
    audience: 'https://accounts.google.com/o/oauth2/token',
    scope: 'https://www.googleapis.com/auth/analytics.readonly',
    issuer: GA_EMAIL,
    signing_key: Google::APIClient::PKCS12.load_key(p12_binary, 'notasecret')
  ).tap { |auth| auth.fetch_access_token! }
  rescue Signet::AuthorizationError
    self.client = nil
  end

  self.client
end

PRIVATE_KEY: "Bag Attributesn    friendlyName: privatekeyn    localKeyID: 54 69 6D 65 20 31 34 33 35 36 38 34 30 33 31 30 32 39nKey Attributes: <No Attributes>n-----BEGIN RSA PRIVATE KEY-----nKEYn-----END RSA PRIVATE KEY-----n"

CERT: "Bag AttributesnfriendlyName: privatekeynlocalKeyID: 54 69 6D 65 20 31 34 33 35 36 38 34 30 33 31 30 32 39nsubject=/CN=636085506886-096q9j1uotf9kp1tv4evhn2crip6dec8.apps.googleusercontent.comnissuer=/CN=636085506886-096q9j1uotf9kp1tv4evhn2crip6dec8.apps.googleusercontent.comn-----BEGIN CERTIFICATE-----nCERTn-----END CERTIFICATE-----n"