add currentUser query

app/graphql/enums/role_enum.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+module Enums
+  class RoleEnum < Types::BaseEnum
+    graphql_name "UserRole"
+
+    values(%w[admin teacher nde coordinator center_director pro_rector])
+  end
+end

app/graphql/types/base_enum.rb

@@ -1,7 +1,11 @@
 module Types
   class BaseEnum < GraphQL::Schema::Enum
-    def self.values_from_enumerize(enum_values)
-      enum_values.values.each do |enum_value|
+    def self.values_from_enumerize(enum)
+      values(enum.values)
+    end
+
+    def self.values(enum_values)
+      enum_values.each do |enum_value|
         value enum_value.upcase, value: enum_value
       end
     end

app/graphql/types/query_type.rb

@@ -8,8 +8,14 @@ module Types
       argument :where, Inputs::QuestionWhereInput, required: false
     end
 
+    field :current_user, Types::UserType, null: true
+
     def questions(where: nil)
       Resolvers::QuestionsQueryResolver.new(Question, context: context, where: where).resolve
     end
+
+    def current_user
+      context[:current_user]
+    end
   end
 end

app/graphql/types/user_type.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module Types
+  class UserType < Types::BaseObject
+    graphql_name "User"
+
+    field :id, ID, null: false
+    field :name, String, null: false
+    field :email, String, null: false
+    field :roles, [Enums::RoleEnum], null: false
+
+    def roles
+      object.roles.map(&:name)
+    end
+  end
+end