Introduce a new InsightsFeature#insights_config method

Signed-off-by: Rémy Coutable <remy@rymai.me>

ee/app/models/concerns/insights_feature.rb

@@ -12,4 +12,19 @@ module InsightsFeature
   def insights_available?
     ::Feature.enabled?(:insights, self) && feature_available?(:insights)
   end
+
+  def insights_config
+    return self.insight.project.insights_config if self.respond_to?(:insight) && self.insight
+    return unless self.respond_to?(:repository)
+    return if self.repository.empty?
+
+    insights_config_yml = self.repository.insights_config_for(self.repository.root_ref)
+    return unless insights_config_yml
+
+    strong_memoize(:insights_config) do
+      ::Gitlab::Config::Loader::Yaml.new(insights_config_yml).load!
+    end
+  rescue Gitlab::Config::Loader::FormatError
+    nil
+  end
 end

ee/spec/models/group_spec.rb

@@ -400,4 +400,48 @@ describe Group do
       let(:entity) { group }
     end
   end
+
+  describe "#insights_config" do
+    context 'when group has no Insights project configured' do
+      it 'returns nil' do
+        expect(group.insights_config).to be_nil
+      end
+    end
+
+    context 'when group has an Insights project configured without a config file' do
+      before do
+        project = create(:project, group: group)
+        group.create_insight!(project: project)
+      end
+
+      it 'returns nil' do
+        expect(group.insights_config).to be_nil
+      end
+    end
+
+    context 'when group has an Insights project configured' do
+      before do
+        project = create(:project, :custom_repo, group: group, files: { ::Gitlab::Insights::CONFIG_FILE_PATH => insights_file_content })
+        group.create_insight!(project: project)
+      end
+
+      context 'with a valid config file' do
+        let(:insights_file_content) { 'key: monthlyBugsCreated' }
+
+        it 'returns the insights config data' do
+          insights_config = group.insights_config
+
+          expect(insights_config).to eq(key: 'monthlyBugsCreated')
+        end
+      end
+
+      context 'with an invalid config file' do
+        let(:insights_file_content) { ': foo bar' }
+
+        it 'returns the insights config data' do
+          expect(group.insights_config).to be_nil
+        end
+      end
+    end
+  end
 end

ee/spec/models/project_spec.rb

@@ -1735,6 +1735,38 @@ describe Project do
     end
   end
 
+  describe "#insights_config" do
+    context 'when project has no Insights config file' do
+      it 'returns nil' do
+        expect(create(:project).insights_config).to be_nil
+      end
+    end
+
+    context 'when project has an Insights config file' do
+      let(:project) do
+        create(:project, :custom_repo, files: { ::Gitlab::Insights::CONFIG_FILE_PATH => insights_file_content })
+      end
+
+      context 'with a valid config file' do
+        let(:insights_file_content) { 'key: monthlyBugsCreated' }
+
+        it 'returns the insights config data' do
+          insights_config = project.insights_config
+
+          expect(insights_config).to eq(key: 'monthlyBugsCreated')
+        end
+      end
+
+      context 'with an invalid config file' do
+        let(:insights_file_content) { ': foo bar' }
+
+        it 'returns the insights config data' do
+          expect(project.insights_config).to be_nil
+        end
+      end
+    end
+  end
+
   # Despite stubbing the current node as the primary or secondary, the
   # behaviour for EE::Project#lfs_http_url_to_repo() is to call
   # Project#lfs_http_url_to_repo() which does not have a Geo context.