DEV: Cancel popup should abort request (#497)

assets/javascripts/discourse/connectors/editor-preview/ai-image-caption-container.gjs

@@ -11,12 +11,9 @@ import DTextarea from "discourse/components/d-textarea";
 import autoFocus from "discourse/modifiers/auto-focus";
 import icon from "discourse-common/helpers/d-icon";
 import i18n from "discourse-common/helpers/i18n";
-import { IMAGE_MARKDOWN_REGEX } from "../../lib/utilities";
 
 export default class AiImageCaptionContainer extends Component {
   @service imageCaptionPopup;
-  @service appEvents;
-  @service composer;
 
   @action
   updateCaption(event) {
@@ -26,22 +23,7 @@ export default class AiImageCaptionContainer extends Component {
 
   @action
   saveCaption() {
-    const index = this.imageCaptionPopup.imageIndex;
-    const matchingPlaceholder =
-      this.composer.model.reply.match(IMAGE_MARKDOWN_REGEX);
-
-    if (matchingPlaceholder) {
-      const match = matchingPlaceholder[index];
-      const replacement = match.replace(
-        IMAGE_MARKDOWN_REGEX,
-        `![${this.imageCaptionPopup.newCaption}|$2$3$4]($5)`
-      );
-
-      if (match) {
-        this.appEvents.trigger("composer:replace-text", match, replacement);
-      }
-    }
-
+    this.imageCaptionPopup.updateCaption();
     this.hidePopup();
   }
 
@@ -63,6 +45,11 @@ export default class AiImageCaptionContainer extends Component {
   @action
   hidePopup() {
     this.imageCaptionPopup.showPopup = false;
+    if (this.imageCaptionPopup._request) {
+      this.imageCaptionPopup._request.abort();
+      this.imageCaptionPopup._request = null;
+      this.imageCaptionPopup.toggleLoadingState(false);
+    }
   }
 
   <template>
@@ -91,7 +78,7 @@ export default class AiImageCaptionContainer extends Component {
             @action={{this.saveCaption}}
           />
           <DButton
-            class="btn-flat"
+            class="btn-flat cancel-request"
             @label="cancel"
             @action={{this.hidePopup}}
           />

assets/javascripts/discourse/services/image-caption-popup.js

@@ -1,10 +1,43 @@
 import { tracked } from "@glimmer/tracking";
-import Service from "@ember/service";
+import Service, { inject as service } from "@ember/service";
+import { IMAGE_MARKDOWN_REGEX } from "../lib/utilities";
 
 export default class ImageCaptionPopup extends Service {
+  @service composer;
+  @service appEvents;
+
   @tracked showPopup = false;
   @tracked imageIndex = null;
   @tracked imageSrc = null;
   @tracked newCaption = null;
   @tracked loading = false;
+  @tracked popupTrigger = null;
+  @tracked _request = null;
+
+  updateCaption() {
+    const matchingPlaceholder =
+      this.composer.model.reply.match(IMAGE_MARKDOWN_REGEX);
+
+    if (matchingPlaceholder) {
+      const match = matchingPlaceholder[this.imageIndex];
+      const replacement = match.replace(
+        IMAGE_MARKDOWN_REGEX,
+        `![${this.newCaption}|$2$3$4]($5)`
+      );
+
+      if (match) {
+        this.appEvents.trigger("composer:replace-text", match, replacement);
+      }
+    }
+  }
+
+  toggleLoadingState(loading) {
+    if (loading) {
+      this.popupTrigger?.classList.add("disabled");
+      return (this.loading = true);
+    }
+
+    this.popupTrigger?.classList.remove("disabled");
+    return (this.loading = false);
+  }
 }

assets/javascripts/initializers/ai-image-caption.js

@@ -2,7 +2,6 @@ import { ajax } from "discourse/lib/ajax";
 import { popupAjaxError } from "discourse/lib/ajax-error";
 import { apiInitializer } from "discourse/lib/api";
 import I18n from "discourse-i18n";
-import { IMAGE_MARKDOWN_REGEX } from "../discourse/lib/utilities";
 
 export default apiInitializer("1.25.0", (api) => {
   const buttonAttrs = {
@@ -10,10 +9,7 @@ export default apiInitializer("1.25.0", (api) => {
     icon: "discourse-sparkles",
     class: "generate-caption",
   };
-  const imageCaptionPopup = api.container.lookup("service:imageCaptionPopup");
   const settings = api.container.lookup("service:site-settings");
-  const appEvents = api.container.lookup("service:app-events");
-  const site = api.container.lookup("site:main");
 
   if (!settings.ai_helper_enabled_features.includes("image_caption")) {
     return;
@@ -23,7 +19,15 @@ export default apiInitializer("1.25.0", (api) => {
     buttonAttrs.class,
     buttonAttrs.icon,
     (event) => {
-      if (event.target.classList.contains("generate-caption")) {
+      const imageCaptionPopup = api.container.lookup(
+        "service:imageCaptionPopup"
+      );
+
+      imageCaptionPopup.popupTrigger = event.target;
+
+      if (
+        imageCaptionPopup.popupTrigger.classList.contains("generate-caption")
+      ) {
         const buttonWrapper = event.target.closest(".button-wrapper");
         const imageIndex = parseInt(
           buttonWrapper.getAttribute("data-image-index"),
@@ -34,20 +38,24 @@ export default apiInitializer("1.25.0", (api) => {
           .querySelector("img")
           .getAttribute("src");
 
-        imageCaptionPopup.loading = true;
+        imageCaptionPopup.toggleLoadingState(true);
 
+        const site = api.container.lookup("site:main");
         if (!site.mobileView) {
           imageCaptionPopup.showPopup = !imageCaptionPopup.showPopup;
         }
 
-        event.target.classList.add("disabled");
+        imageCaptionPopup._request = ajax(
+          `/discourse-ai/ai-helper/caption_image`,
+          {
+            method: "POST",
+            data: {
+              image_url: imageSrc,
+            },
+          }
+        );
 
-        ajax(`/discourse-ai/ai-helper/caption_image`, {
-          method: "POST",
-          data: {
-            image_url: imageSrc,
-          },
-        })
+        imageCaptionPopup._request
           .then(({ caption }) => {
             imageCaptionPopup.imageSrc = imageSrc;
             imageCaptionPopup.imageIndex = imageIndex;
@@ -55,22 +63,12 @@ export default apiInitializer("1.25.0", (api) => {
 
             if (site.mobileView) {
               // Auto-saves caption on mobile view
-              const composer = api.container.lookup("service:composer");
-
-              const matchingPlaceholder =
-                composer.model.reply.match(IMAGE_MARKDOWN_REGEX);
-              const match = matchingPlaceholder[imageIndex];
-              const replacement = match.replace(
-                IMAGE_MARKDOWN_REGEX,
-                `![${imageCaptionPopup.newCaption}|$2$3$4]($5)`
-              );
-              appEvents.trigger("composer:replace-text", match, replacement);
+              imageCaptionPopup.updateCaption();
             }
           })
           .catch(popupAjaxError)
           .finally(() => {
-            imageCaptionPopup.loading = false;
-            event.target.classList.remove("disabled");
+            imageCaptionPopup.toggleLoadingState(false);
           });
       }
     }

spec/system/ai_helper/ai_image_caption_spec.rb

@@ -36,6 +36,15 @@ RSpec.describe "AI image caption", type: :system, js: true do
       wait_for { page.find(".image-wrapper img")["alt"] == caption_with_attrs }
       expect(page.find(".image-wrapper img")["alt"]).to eq(caption_with_attrs)
     end
+
+    it "should allow you to cancel a caption request" do
+      visit("/latest")
+      page.find("#create-topic").click
+      attach_file([file_path]) { composer.click_toolbar_button("upload") }
+      popup.click_generate_caption
+      popup.cancel_caption
+      expect(popup).to have_no_disabled_generate_button
+    end
   end
 
   context "when triggering caption with AI on mobile", mobile: true do

spec/system/page_objects/components/ai_caption_popup.rb

@@ -18,6 +18,14 @@ module PageObjects
       def save_caption
         find("#{CAPTION_POPUP_SELECTOR} .btn-primary").click
       end
+
+      def cancel_caption
+        find("#{CAPTION_POPUP_SELECTOR} .cancel-request").click
+      end
+
+      def has_no_disabled_generate_button?
+        page.has_no_css?("#{GENERATE_CAPTION_SELECTOR}.disabled", visible: false)
+      end
     end
   end
 end