Update Email with notify_status

Here we're just doing it straight off in the callback. This is probably quick enough (I suspect adding the worker infrastructure to
queue it might make it slower), but we
should confirm that.

app/controllers/status_updates_controller.rb

@@ -23,6 +23,13 @@ def create
       UnsubscribeAllService.call(subscriber, :non_existent_email) if subscriber
     end
 
+    begin
+      Email.find(reference).update!(notify_status: status)
+    rescue StandardError
+      # At the moment we don't want to do anything if
+      # the reference can't be found.
+    end
+
     head :no_content
   end
 

spec/integration/status_updates_spec.rb

@@ -20,6 +20,18 @@
       expect(response.body).to eq("")
     end
 
+    context "with a relevant email" do
+      before do
+        @email = create(:email, id: params[:reference])
+      end
+
+      it "updates the referenced email" do
+        post("/status-updates", params:)
+
+        expect(@email.reload.notify_status).to eq(status)
+      end
+    end
+
     context "when a user does not have 'status_updates' permission" do
       let(:permissions) { %w[signin] }