module Pears
  module Provider
    class Base
      attr_accessor :data

      def initialize(data, on_failure: :raise)
        @data = data
      end

      def has_key?(key)
        @data.has_key? key
      end

      def each(&block)
        @data.block(&:yield)
      end

      def [](key)
        @data[key]
      end

      private

      def parse_yaml(yaml_data)
        yaml_data = YAML.load(yaml_data)
        raise Pears::InvalidProviderData if yaml_data.is_a? String
        yaml_data.with_indifferent_access
      end
    end
  end
end