Refactor mount method option validator

.rubocop.yml

@@ -59,7 +59,7 @@ Style/MethodCalledOnDoEndBlock:
   Enabled: false
 
 Naming/VariableNumber:
-  Enabled: false
+  EnforcedColonStyle: normalcase
 
 Style/StringLiterals:
   ConsistentQuotesInMultiline: true

lib/graphql_devise.rb

@@ -2,33 +2,28 @@
 require 'graphql'
 require 'devise_token_auth'
 
+module GraphqlDevise
+  class Error < StandardError; end
+
+  class InvalidMountOptionsError < GraphqlDevise::Error; end
+end
+
 require 'graphql_devise/concerns/controller_methods'
 require 'graphql_devise/types/authenticatable_type'
 require 'graphql_devise/types/credential_type'
 require 'graphql_devise/types/mutation_type'
 require 'graphql_devise/types/query_type'
-require 'graphql_devise/mutations/base'
-require 'graphql_devise/mutations/login'
-require 'graphql_devise/mutations/logout'
-require 'graphql_devise/mutations/resend_confirmation'
-require 'graphql_devise/mutations/send_password_reset'
-require 'graphql_devise/mutations/sign_up'
-require 'graphql_devise/mutations/update_password'
-require 'graphql_devise/resolvers/base'
-require 'graphql_devise/resolvers/check_password_token'
-require 'graphql_devise/resolvers/confirm_account'
+require 'graphql_devise/default_operations/mutations'
+require 'graphql_devise/default_operations/resolvers'
 require 'graphql_devise/resolvers/dummy'
 
 require 'graphql_devise/engine'
 require 'graphql_devise/version'
 require 'graphql_devise/error_codes'
 require 'graphql_devise/user_error'
 require 'graphql_devise/detailed_user_error'
-require 'graphql_devise/rails/queries_preparer'
-require 'graphql_devise/rails/mutations_preparer'
-require 'graphql_devise/rails/operation_checker'
-require 'graphql_devise/rails/operation_sanitizer'
 
-module GraphqlDevise
-  class Error < StandardError; end
-end
+require 'graphql_devise/mount_method/options_validator'
+require 'graphql_devise/mount_method/queries_preparer'
+require 'graphql_devise/mount_method/mutations_preparer'
+require 'graphql_devise/mount_method/operation_sanitizer'

lib/graphql_devise/default_operations/mutations.rb

@@ -0,0 +1,20 @@
+require 'graphql_devise/mutations/base'
+require 'graphql_devise/mutations/login'
+require 'graphql_devise/mutations/logout'
+require 'graphql_devise/mutations/resend_confirmation'
+require 'graphql_devise/mutations/send_password_reset'
+require 'graphql_devise/mutations/sign_up'
+require 'graphql_devise/mutations/update_password'
+
+module GraphqlDevise
+  module DefaultOperations
+    MUTATIONS = {
+      login:               GraphqlDevise::Mutations::Login,
+      logout:              GraphqlDevise::Mutations::Logout,
+      sign_up:             GraphqlDevise::Mutations::SignUp,
+      update_password:     GraphqlDevise::Mutations::UpdatePassword,
+      send_password_reset: GraphqlDevise::Mutations::SendPasswordReset,
+      resend_confirmation: GraphqlDevise::Mutations::ResendConfirmation
+    }.freeze
+  end
+end

lib/graphql_devise/default_operations/resolvers.rb

@@ -0,0 +1,12 @@
+require 'graphql_devise/resolvers/base'
+require 'graphql_devise/resolvers/check_password_token'
+require 'graphql_devise/resolvers/confirm_account'
+
+module GraphqlDevise
+  module DefaultOperations
+    QUERIES = {
+      confirm_account:      GraphqlDevise::Resolvers::ConfirmAccount,
+      check_password_token: GraphqlDevise::Resolvers::CheckPasswordToken
+    }.freeze
+  end
+end

lib/graphql_devise/mount_method/mutations_preparer.rb

@@ -0,0 +1,27 @@
+module GraphqlDevise
+  module MountMethod
+    class MutationsPreparer
+      def self.call(resource:, mutations:, authenticatable_type:)
+        new(resource: resource, mutations: mutations, authenticatable_type: authenticatable_type).call
+      end
+
+      def initialize(resource:, mutations:, authenticatable_type:)
+        @mapping_name         = resource.underscore.tr('/', '_').to_sym
+        @mutations            = mutations
+        @authenticatable_type = authenticatable_type
+      end
+
+      def call
+        @mutations.each_with_object({}) do |(action, mutation), result|
+          mapped_action = "#{@mapping_name}_#{action}".to_sym
+          new_mutation  = Class.new(mutation)
+          new_mutation.graphql_name(mapped_action.to_s.camelize(:upper))
+          new_mutation.field(:authenticatable, @authenticatable_type, null: true)
+          new_mutation.instance_variable_set(:@resource_name, @mapping_name)
+
+          result[mapped_action] = new_mutation
+        end
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/operation_sanitizer.rb

@@ -0,0 +1,35 @@
+module GraphqlDevise
+  module MountMethod
+    class OperationSanitizer
+      def self.call(default:, custom:, only:, skipped:)
+        new(
+          default: default,
+          custom:  custom,
+          only:    only,
+          skipped: skipped
+        ).call
+      end
+
+      def initialize(default:, custom:, only:, skipped:)
+        @default = default
+        @custom  = custom
+        @only    = only
+        @skipped = skipped
+      end
+
+      def call
+        result = @default.merge(@custom.slice(*operations_whitelist))
+        result = result.slice(*@only) if @only.present?
+        result = result.except(*@skipped) if @skipped.present?
+
+        result
+      end
+
+      private
+
+      def operations_whitelist
+        @default.keys
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/option_validators/provided_operations_validator.rb

@@ -0,0 +1,44 @@
+require_relative 'supported_operations_validator'
+
+module GraphqlDevise
+  module MountMethod
+    module OptionValidators
+      class ProvidedOperationsValidator
+        def initialize(options: {}, supported_operations: {})
+          @options              = options || {}
+          @supported_operations = supported_operations
+        end
+
+        def validate!
+          skipped        = @options.fetch(:skip, [])
+          only           = @options.fetch(:only, [])
+          operations     = @options.fetch(:operations, {})
+          supported_keys = @supported_operations.keys
+
+          raise_on_invalid_option_type!(:skip, skipped, Array)
+          raise_on_invalid_option_type!(:only, only, Array)
+          raise_on_invalid_option_type!(:operations, operations, Hash)
+
+          custom = operations.keys
+
+          [
+            SupportedOperationsValidator.new(provided_operations: skipped, key: :skip, supported_operations: supported_keys),
+            SupportedOperationsValidator.new(provided_operations: only, key: :only, supported_operations: supported_keys),
+            SupportedOperationsValidator.new(provided_operations: custom, key: :operations, supported_operations: supported_keys)
+          ].each(&:validate!)
+        end
+
+        private
+
+        def raise_on_invalid_option_type!(key, value, expected_class)
+          unless value.is_a?(expected_class)
+            raise(
+              GraphqlDevise::InvalidMountOptionsError,
+              "#{key} option contains value of invalid value. Value must be #{expected_class.name}."
+            )
+          end
+        end
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/option_validators/skip_only_validator.rb

@@ -0,0 +1,20 @@
+module GraphqlDevise
+  module MountMethod
+    module OptionValidators
+      class SkipOnlyValidator
+        def initialize(options: {})
+          @options = options || {}
+        end
+
+        def validate!
+          if [@options[:skip], @options[:only]].all?(&:present?)
+            raise(
+              GraphqlDevise::InvalidMountOptionsError,
+              "Can't specify both `skip` and `only` options when mounting the route."
+            )
+          end
+        end
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/option_validators/supported_operations_validator.rb

@@ -0,0 +1,24 @@
+module GraphqlDevise
+  module MountMethod
+    module OptionValidators
+      class SupportedOperationsValidator
+        def initialize(provided_operations: [], supported_operations: [], key:)
+          @provided_operations  = provided_operations
+          @supported_operations = supported_operations
+          @key                  = key
+        end
+
+        def validate!
+          unsupported_operations = @provided_operations - @supported_operations
+
+          if unsupported_operations.present?
+            raise(
+              GraphqlDevise::InvalidMountOptionsError,
+              "#{@key} option contains unsupported operations: \"#{unsupported_operations.join(', ')}\". Check for typos."
+            )
+          end
+        end
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/options_validator.rb

@@ -0,0 +1,16 @@
+require_relative 'option_validators/skip_only_validator'
+require_relative 'option_validators/provided_operations_validator'
+
+module GraphqlDevise
+  module MountMethod
+    class OptionsValidator
+      def initialize(validators = [])
+        @validators = validators
+      end
+
+      def validate!
+        @validators.each(&:validate!)
+      end
+    end
+  end
+end

lib/graphql_devise/mount_method/queries_preparer.rb

@@ -0,0 +1,27 @@
+module GraphqlDevise
+  module MountMethod
+    class QueriesPreparer
+      def self.call(resource:, queries:, authenticatable_type:)
+        new(resource: resource, queries: queries, authenticatable_type: authenticatable_type).call
+      end
+
+      def initialize(resource:, queries:, authenticatable_type:)
+        @mapping_name         = resource.underscore.tr('/', '_').to_sym
+        @queries              = queries
+        @authenticatable_type = authenticatable_type
+      end
+
+      def call
+        @queries.each_with_object({}) do |(action, query), result|
+          mapped_action = "#{@mapping_name}_#{action}".to_sym
+          new_query     = Class.new(query)
+          new_query.graphql_name(mapped_action.to_s.camelize(:upper))
+          new_query.type(@authenticatable_type, null: true)
+          new_query.instance_variable_set(:@resource_name, @mapping_name)
+
+          result[mapped_action] = new_query
+        end
+      end
+    end
+  end
+end