# Copyright 2015, Google Inc.
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module Google
  # Module Auth provides classes that provide Google-specific authorization
  # used to access Google APIs.
  module Auth
    # JsonKeyReader contains the behaviour used to read private key and
    # client email fields from the service account
    module JsonKeyReader
      def read_json_key json_key_io
        json_key = MultiJson.load json_key_io.read
        raise "missing client_email" unless json_key.key? "client_email"
        raise "missing private_key" unless json_key.key? "private_key"
        [
          json_key["private_key"],
          json_key["client_email"],
          json_key["project_id"],
          json_key["quota_project_id"]
        ]
      end
    end
  end
end