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# frozen_string_literal: true
module Types
class GlobalIDType < BaseScalar
graphql_name 'GlobalID'
description 'A global identifier'
# @param value [GID]
# @return [String]
def self.coerce_result(value, _ctx)
::Gitlab::GlobalId.as_global_id(value).to_s
end
# @param value [String]
# @return [GID]
def self.coerce_input(value, _ctx)
gid = GlobalID.parse(value)
raise GraphQL::CoercionError, "#{value.inspect} is not a valid Global ID" if gid.nil?
raise GraphQL::CoercionError, "#{value.inspect} is not a Gitlab Global ID" unless gid.app == GlobalID.app
gid
end
# Construct a restricted type, that can only be inhabited by an ID of
# a given model class.
def self.[](model_class)
@id_types ||= {}
@id_types[model_class] ||= Class.new(self) do
graphql_name "#{model_class.name.gsub(/::/, '')}ID"
description "Identifier of #{model_class.name}"
self.define_singleton_method(:to_s) do
graphql_name
end
self.define_singleton_method(:inspect) do
graphql_name
end
self.define_singleton_method(:coerce_result) do |gid, ctx|
global_id = ::Gitlab::GlobalId.as_global_id(gid, model_name: model_class.name)
if suitable?(global_id)
global_id.to_s
else
raise GraphQL::CoercionError, "Expected a #{model_class.name} ID, got #{global_id}"
end
end
self.define_singleton_method(:suitable?) do |gid|
gid&.model_class&.ancestors&.include?(model_class)
end
self.define_singleton_method(:coerce_input) do |string, ctx|
gid = super(string, ctx)
raise GraphQL::CoercionError, "#{string.inspect} does not represent an instance of #{model_class.name}" unless suitable?(gid)
gid
end
end
end
end
end
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