FIX: Regenerate summary button still shows cached summary (#903)

This PR fixes an issue where clicking to regenerate a summary was still showing the cached summary. To resolve this we call resetSummary() to reset all the summarization related properties before creating a new request.

assets/javascripts/discourse/connectors/topic-map-expanded-after/ai-summary-box.gjs

@@ -123,6 +123,8 @@ export default class AiSummaryBox extends Component {
       }
     }
 
+    // ensure summary is reset before requesting a new one:
+    this.resetSummary();
     return this._requestSummary(fetchURL);
   }
 

lib/summarization/fold_content.rb

@@ -48,7 +48,7 @@ module DiscourseAi
 
       # @returns { AiSummary } - Resulting summary.
       #
-      # Finds a summary matching the target and strategy. Marks it as outdates if the strategy found newer content
+      # Finds a summary matching the target and strategy. Marks it as outdated if the strategy found newer content
       def existing_summary
         if !defined?(@existing_summary)
           summary = AiSummary.find_by(target: strategy.target, summary_type: strategy.type)

spec/system/page_objects/components/ai_summary_box.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module PageObjects
+  module Components
+    class AiSummaryBox < PageObjects::Components::Base
+      SUMMARY_BUTTON_SELECTOR = ".ai-summarization-button button"
+      SUMMARY_CONTAINER_SELECTOR = ".ai-summary-container"
+
+      def click_summarize
+        find(SUMMARY_BUTTON_SELECTOR).click
+      end
+
+      def click_regenerate_summary
+        find("#{SUMMARY_CONTAINER_SELECTOR} .outdated-summary button").click
+      end
+
+      def has_summary?(summary)
+        find("#{SUMMARY_CONTAINER_SELECTOR} .generated-summary p").text == summary
+      end
+
+      def has_generating_summary_indicator?
+        find("#{SUMMARY_CONTAINER_SELECTOR} .ai-summary__generating-text").present?
+      end
+    end
+  end
+end

spec/system/summarization/topic_summarization_spec.rb

@@ -14,6 +14,7 @@ RSpec.describe "Summarize a topic ", type: :system do
   end
   let(:summarization_result) { "This is a summary" }
   let(:topic_page) { PageObjects::Pages::Topic.new }
+  let(:summary_box) { PageObjects::Components::AiSummaryBox.new }
 
   before do
     group.add(current_user)
@@ -38,10 +39,35 @@ RSpec.describe "Summarize a topic ", type: :system do
 
     it "displays it" do
       topic_page.visit_topic(topic)
+      summary_box.click_summarize
+      expect(summary_box).to have_summary(summarization_result)
+    end
+  end
 
-      find(".ai-summarization-button button").click
+  context "when a summary is outdated" do
+    before do
+      AiSummary.create!(
+        target: topic,
+        summarized_text: summarization_result,
+        algorithm: "test",
+        original_content_sha: "test",
+        summary_type: AiSummary.summary_types[:complete],
+      )
+    end
+    fab!(:new_post) do
+      Fabricate(
+        :post,
+        topic: topic,
+        raw:
+          "Idk, I think pie is overrated. I prefer cake. Cake is the best dessert. I always eat cake. I never throw it at people.",
+      )
+    end
 
-      expect(find(".generated-summary p").text).to eq(summarization_result)
+    it "displays the new summary instead of a cached one" do
+      topic_page.visit_topic(topic)
+      summary_box.click_summarize
+      summary_box.click_regenerate_summary
+      expect(summary_box).to have_generating_summary_indicator
     end
   end
 end