Add support and test for hiding mapper fields (#1060)

app/controllers/api/configurations_controller.rb

@@ -229,6 +229,7 @@ def update
 
         enabled: @user.enabled,
         configuration_hash: @user.configuration_hash,
+        hidden_mapper_fields: @user.hidden_mapper_fields,
       }
     end
 

lib/stripe-force/constants.rb

@@ -205,6 +205,7 @@ class FeatureFlags < T::Enum
         COUPONS = new('coupons')
         TERMINATED_ORDER_ITEM_CREDIT = new('terminated_order_item_credit')
         AUTO_ADVANCE_PRORATION_INVOICE = new('auto_advance_proration_invoices')
+        PREBILLING = new('prebilling')
       end
     end
 

lib/stripe-force/db/user.rb

@@ -303,6 +303,22 @@ def default_mappings
       }
     end
 
+    # fields to hide from the Data Mapper UI depending
+    # on the feature flags the user has enabled
+    def hidden_mapper_fields
+      hidden_mapper_fields = []
+
+      if !feature_enabled?(FeatureFlags::COUPONS)
+        hidden_mapper_fields << "coupon"
+      end
+
+      if !feature_enabled?(FeatureFlags::PREBILLING)
+        hidden_mapper_fields << "subscription_schedule.prebilling.iterations"
+      end
+
+      hidden_mapper_fields
+    end
+
     sig { params(feature: FeatureFlags, update: T::Boolean).void }
     def enable_feature(feature, update: false)
       if !feature_flags.include?(feature.serialize.to_sym)

test/controllers/test_configurations_controller.rb

@@ -233,6 +233,29 @@ class Critic::ConfigurationsControllerTest < ApplicationIntegrationTest
         refute_equal(initial_hash, result['configuration_hash'])
         assert_equal(40, result['configuration_hash'].size)
       end
+
+      it 'hidden mapper fields is updated when features are enabled' do
+        get api_configuration_path, headers: authentication_headers
+        assert_response :success
+        result = parsed_json
+
+        # initially the hidden mapper fields should contain values
+        # if no feature flag is enabled for the user
+        assert(2, result['hidden_mapper_fields'].count)
+        assert_equal(['coupon', 'subscription_schedule.prebilling.iterations'], result['hidden_mapper_fields'])
+
+        # enable features
+        @user.enable_feature(FeatureFlags::COUPONS)
+        @user.enable_feature(FeatureFlags::PREBILLING)
+        @user.save
+
+        get api_configuration_path, headers: authentication_headers
+        assert_response :success
+        result = parsed_json
+
+        # if mappings change, hash should be different
+        assert_equal([], result['hidden_mapper_fields'])
+      end
     end
 
     describe '#configuration' do