Update group_scores on match_score change if match is a group match

app/controllers/match_scores_controller.rb

@@ -13,7 +13,10 @@ class MatchScoresController < ApplicationController
   # PATCH/PUT /scores/1
   def update
     if @match_score.update(match_score_params)
-      GroupStageService.calculate_group_points(@match_score)
+      if @match_score.part_of_group_match?
+        match_score_group = @match_score.match.group
+        UpdateGroupsGroupScoresAndSave.call(group: match_score_group)
+      end
       render json: @match_score
     else
       render json: @match_score.errors, status: :unprocessable_entity

app/interactors/update_groups_group_scores.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class UpdateGroupsGroupScores
+  include Interactor
+
+  def call
+    group = context.group
+    begin
+      group_scores = GroupStageService.update_group_scores(group)
+      context.object_to_save = group_scores
+    rescue StandardError
+      context.fail!
+    end
+  end
+end

app/organizers/update_groups_group_scores_and_save.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class UpdateGroupsGroupScoresAndSave
+  include Interactor::Organizer
+
+  organize UpdateGroupsGroupScores, SaveApplicationRecordObject
+end

spec/interactors/update_groups_group_scores_interactor_spec.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+RSpec.describe UpdateGroupsGroupScores do
+  before do
+    @group = create(:group)
+    @group_scores = create_list(:group_score, 2)
+  end
+
+  context 'save succeeds' do
+    let(:context) do
+      UpdateGroupsGroupScores.call(group: @group)
+    end
+
+    before do
+      allow(GroupStageService)
+        .to receive(:update_group_scores).with(@group)
+                                         .and_return(@group_scores)
+    end
+
+    it 'succeeds' do
+      expect(context).to be_a_success
+    end
+
+    it 'provides the objects to save' do
+      expect(context.object_to_save).to eq(@group_scores)
+    end
+  end
+
+  context 'exception is thrown' do
+    let(:context) do
+      UpdateGroupsGroupScores.call(group: @group)
+    end
+    before do
+      allow(GroupStageService)
+        .to receive(:update_group_scores).with(@group)
+                                         .and_throw('This failed :(')
+    end
+
+    it 'fails' do
+      test = context.failure?
+      expect(test).to eq(true)
+    end
+  end
+end