debian-mirror-gitlab/lib/gitlab/graphql/negatable_arguments.rb
2021-04-29 21:17:54 +05:30

53 lines
1.4 KiB
Ruby

# frozen_string_literal: true
module Gitlab
module Graphql
module NegatableArguments
class TypeDefiner
def initialize(resolver_class, type_definition)
@resolver_class = resolver_class
@type_definition = type_definition
end
def define!
negated_params_type.instance_eval(&@type_definition)
end
def negated_params_type
@negated_params_type ||= existing_type || build_type
end
private
def existing_type
::Types.const_get(type_class_name, false) if ::Types.const_defined?(type_class_name)
end
def build_type
klass = Class.new(::Types::BaseInputObject)
::Types.const_set(type_class_name, klass)
klass
end
def type_class_name
@type_class_name ||= begin
base_name = @resolver_class.name.sub('Resolvers::', '')
base_name + 'NegatedParamsType'
end
end
end
def negated(param_key: :not, &block)
definer = ::Gitlab::Graphql::NegatableArguments::TypeDefiner.new(self, block)
definer.define!
argument param_key, definer.negated_params_type,
required: false,
description: <<~MD
List of negated arguments.
Warning: this argument is experimental and a subject to change in future.
MD
end
end
end
end