Contents

require "mountapi/error/invalid_parameter"

module Mountapi
  module Schema
    # Mixin for schema behaviour
    module Base
      def self.included(base)
        base.class_eval do
          extend ClassMethods
          include InstanceMethods
          extend Forwardable
          attr_reader :open_api_schema
          def_delegators :open_api_schema, :type, :required
        end
      end

      # class extensions
      module ClassMethods
        # @param [String] key_name
        # @param [Object] value
        #
        # @return [Hash{String => Object}]
        #
        # For a given key name , transform value to json schema
        # Override this method for custom value transformation
        def to_json_schema(key_name, value)
          { key_name => value }
        end
      end

      module InstanceMethods

        # @param [OpenApi3Parser::Schema] open_api_schema
        def initialize(open_api_schema)
          @open_api_schema = open_api_schema
        end

        def default
          open_api_schema.default
        end

        # @return [Hash] the json-schema specification
        def to_json_schema
          schema = open_api_schema.to_h.inject({}) do |acc, (key, value)|
            if value.nil?
              acc
            else
              acc.merge(self.class.to_json_schema(key.to_s, value))
            end.merge("id" => self.class.name)
          end

          if schema["nullable"]
            schema["type"] = [schema["type"], "null"]
          end

          schema
        end

        def raise_cast_error(value)
          raise Error::InvalidParameter.new([{message: "can't cast #{value.inspect} as #{self.class.name}"}])
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
mountapi-0.11.1	lib/mountapi/schema/base.rb