FEATURE: Generate post illustrations (#367)

app/controllers/discourse_ai/ai_helper/assistant_controller.rb

@@ -32,6 +32,8 @@ module DiscourseAi
           prompt.custom_instruction = params[:custom_prompt]
         end
 
+        suggest_thumbnails(input) if prompt.id == CompletionPrompt::ILLUSTRATE_POST
+
         hijack do
           render json:
                    DiscourseAi::AiHelper::Assistant.new.generate_and_send_prompt(
@@ -86,9 +88,7 @@ module DiscourseAi
                status: 200
       end
 
-      def suggest_thumbnails
+      def suggest_thumbnails(input)
-        input = get_text_param!
-
         hijack do
           thumbnails = DiscourseAi::AiHelper::Painter.new.commission_thumbnails(input, current_user)
 

app/models/completion_prompt.rb

@@ -10,6 +10,7 @@ class CompletionPrompt < ActiveRecord::Base
   MARKDOWN_TABLE = -304
   CUSTOM_PROMPT = -305
   EXPLAIN = -306
+  ILLUSTRATE_POST = -308
 
   enum :prompt_type, { text: 0, list: 1, diff: 2 }
 

assets/javascripts/discourse/components/modal/thumbnail-suggestions.gjs

@@ -0,0 +1,75 @@
+import Component from "@glimmer/component";
+import { tracked } from "@glimmer/tracking";
+import { action } from "@ember/object";
+import DButton from "discourse/components/d-button";
+import DModal from "discourse/components/d-modal";
+import DModalCancel from "discourse/components/d-modal-cancel";
+import i18n from "discourse-common/helpers/i18n";
+import ThumbnailSuggestionItem from "../thumbnail-suggestion-item";
+
+export default class ThumbnailSuggestions extends Component {
+  @tracked selectedImages = [];
+
+  get isDisabled() {
+    return this.selectedImages.length === 0;
+  }
+
+  @action
+  addSelection(selection) {
+    const thumbnailMarkdown = `![${selection.original_filename}|${selection.width}x${selection.height}](${selection.short_url})`;
+    this.selectedImages = [...this.selectedImages, thumbnailMarkdown];
+  }
+
+  @action
+  removeSelection(selection) {
+    const thumbnailMarkdown = `![${selection.original_filename}|${selection.width}x${selection.height}](${selection.short_url})`;
+
+    this.selectedImages = this.selectedImages.filter((thumbnail) => {
+      if (thumbnail !== thumbnailMarkdown) {
+        return thumbnail;
+      }
+    });
+  }
+
+  @action
+  appendSelectedImages() {
+    const composerValue = this.args.composer?.reply || "";
+
+    const newValue = composerValue.concat(
+      "\n\n",
+      this.selectedImages.join("\n")
+    );
+    this.args.composer.set("reply", newValue);
+    this.args.closeModal();
+  }
+
+  <template>
+    <DModal
+      class="thumbnail-suggestions-modal"
+      @title={{i18n "discourse_ai.ai_helper.thumbnail_suggestions.title"}}
+      @closeModal={{@closeModal}}
+    >
+      <:body>
+        <div class="ai-thumbnail-suggestions">
+          {{#each @thumbnails as |thumbnail|}}
+            <ThumbnailSuggestionItem
+              @thumbnail={{thumbnail}}
+              @addSelection={{this.addSelection}}
+              @removeSelection={{this.removeSelection}}
+            />
+          {{/each}}
+        </div>
+      </:body>
+
+      <:footer>
+        <DButton
+          @action={{this.appendSelectedImages}}
+          @label="save"
+          @disabled={{this.isDisabled}}
+          class="btn-primary create"
+        />
+        <DModalCancel @close={{@closeModal}} />
+      </:footer>
+    </DModal>
+  </template>
+}

assets/javascripts/discourse/components/thumbnail-suggestion-item.gjs

@@ -0,0 +1,43 @@
+import Component from "@glimmer/component";
+import { tracked } from "@glimmer/tracking";
+import { action } from "@ember/object";
+import DButton from "discourse/components/d-button";
+
+export default class ThumbnailSuggestionItem extends Component {
+  @tracked selected = false;
+  @tracked selectIcon = "far-circle";
+  @tracked selectLabel = "discourse_ai.ai_helper.thumbnail_suggestions.select";
+
+  @action
+  toggleSelection(thumbnail) {
+    if (this.selected) {
+      this.selectIcon = "far-circle";
+      this.selectLabel = "discourse_ai.ai_helper.thumbnail_suggestions.select";
+      this.selected = false;
+      return this.args.removeSelection(thumbnail);
+    }
+
+    this.selectIcon = "check-circle";
+    this.selectLabel = "discourse_ai.ai_helper.thumbnail_suggestions.selected";
+    this.selected = true;
+    return this.args.addSelection(thumbnail);
+  }
+
+  <template>
+    <div class="ai-thumbnail-suggestions__item">
+      <DButton
+        class={{if this.selected "btn-primary" ""}}
+        @icon={{this.selectIcon}}
+        @label={{this.selectLabel}}
+        @action={{this.toggleSelection}}
+        @actionParam={{@thumbnail}}
+      />
+      <img
+        src={{@thumbnail.url}}
+        loading="lazy"
+        width={{@thumbnail.thumbnail_width}}
+        height={{@thumbnail.thumbnail_height}}
+      />
+    </div>
+  </template>
+}

assets/javascripts/discourse/connectors/after-d-editor/ai-helper-context-menu.hbs

@@ -102,3 +102,11 @@
     @closeModal={{fn (mut this.showDiffModal) false}}
   />
 {{/if}}
+
+{{#if this.showThumbnailModal}}
+  <Modal::ThumbnailSuggestions
+    @composer={{@outletArgs.composer}}
+    @thumbnails={{this.thumbnailSuggestions}}
+    @closeModal={{fn (mut this.showThumbnailModal) false}}
+  />
+{{/if}}

assets/javascripts/discourse/connectors/after-d-editor/ai-helper-context-menu.js

@@ -17,6 +17,7 @@ export default class AiHelperContextMenu extends Component {
 
   @service currentUser;
   @service siteSettings;
+  @service modal;
   @tracked helperOptions = [];
   @tracked showContextMenu = false;
   @tracked caretCoords;
@@ -28,6 +29,7 @@ export default class AiHelperContextMenu extends Component {
   @tracked newEditorValue;
   @tracked lastUsedOption = null;
   @tracked showDiffModal = false;
+  @tracked showThumbnailModal = false;
   @tracked diff;
   @tracked popperPlacement = "top-start";
   @tracked previousMenuState = null;
@@ -361,7 +363,15 @@ export default class AiHelperContextMenu extends Component {
         // resets the values if new suggestion is started:
         this.diff = null;
         this.newSelectedText = null;
+
+        if (option.name === "illustrate_post") {
+          this._toggleLoadingState(false);
+          this.closeContextMenu();
+          this.showThumbnailModal = true;
+          this.thumbnailSuggestions = data.thumbnails;
+        } else {
           this._updateSuggestedByAI(data);
+        }
       })
       .catch(popupAjaxError)
       .finally(() => {

assets/stylesheets/modules/ai-helper/common/ai-helper.scss

@@ -432,3 +432,28 @@
     display: none;
   }
 }
+
+.thumbnail-suggestions-modal {
+  .ai-thumbnail-suggestions {
+    display: flex;
+    flex-flow: row wrap;
+    position: relative;
+    gap: 0.5em;
+
+    &__item {
+      flex: 35%;
+      position: relative;
+    }
+
+    img {
+      width: 100%;
+      height: auto;
+    }
+
+    .btn {
+      position: absolute;
+      top: 0.5rem;
+      left: 0.5rem;
+    }
+  }
+}

config/locales/client.en.yml

@@ -153,6 +153,10 @@ en:
           cancel: "Cancel"
         fast_edit:
           suggest_button: "Suggest Edit"
+        thumbnail_suggestions:
+          title: "Suggested Thumbnails"
+          select: "Select"
+          selected: "Selected"
       reviewables:
         model_used: "Model used:"
         accuracy: "Accuracy:"
@@ -186,8 +190,6 @@ en:
           label: "sentiment"
           title: "Experimental AI-powered sentiment analysis of this person's most recent posts."
 
-
-
     review:
       types:
         reviewable_ai_post:

config/locales/server.en.yml

@@ -128,6 +128,7 @@ en:
         markdown_table: Generate Markdown table
         custom_prompt: "Custom Prompt"
         explain: "Explain"
+        illustrate_post: "Illustrate Post"
 
     ai_bot:
       personas:

config/routes.rb

@@ -7,7 +7,6 @@ DiscourseAi::Engine.routes.draw do
     post "suggest_title" => "assistant#suggest_title"
     post "suggest_category" => "assistant#suggest_category"
     post "suggest_tags" => "assistant#suggest_tags"
-    post "suggest_thumbnails" => "assistant#suggest_thumbnails"
     post "explain" => "assistant#explain"
   end
 

db/fixtures/ai_helper/603_completion_prompts.rb

@@ -173,3 +173,10 @@ CompletionPrompt.seed do |cp|
     post_insts: "Wrap each title between <item></item> XML tags.",
   }
 end
+
+CompletionPrompt.seed do |cp|
+  cp.id = -308
+  cp.name = "illustrate_post"
+  cp.prompt_type = CompletionPrompt.prompt_types[:list]
+  cp.messages = {}
+end

lib/ai_helper/assistant.rb

@@ -114,6 +114,8 @@ module DiscourseAi
           "pen"
         when "explain"
           "question"
+        when "illustrate_post"
+          "images"
         else
           nil
         end
@@ -139,6 +141,8 @@ module DiscourseAi
           %w[post]
         when "summarize"
           %w[post]
+        when "illustrate_posts"
+          %w[composer]
         else
           %w[composer post]
         end

lib/ai_helper/painter.rb

@@ -20,10 +20,10 @@ module DiscourseAi
           f.binmode
           f.write(Base64.decode64(artifact))
           f.rewind
-          upload = UploadCreator.new(f, "ai_helper_image.png").create_for(user.id)
+          upload = UploadCreator.new(f, "ai_helper_image_#{i}.png").create_for(user.id)
           f.unlink
 
-          upload.short_url
+          UploadSerializer.new(upload, root: false)
         end
       end
 

spec/lib/modules/ai_helper/painter_spec.rb

@@ -40,7 +40,9 @@ RSpec.describe DiscourseAi::AiHelper::Painter do
 
       thumbnail_urls = Upload.last(4).map(&:short_url)
 
-      expect(thumbnails).to contain_exactly(*thumbnail_urls)
+      expect(thumbnails.map { |upload_serializer| upload_serializer.short_url }).to contain_exactly(
+        *thumbnail_urls,
+      )
     end
   end
 end

spec/requests/ai_helper/assistant_controller_spec.rb

@@ -143,7 +143,7 @@ RSpec.describe DiscourseAi::AiHelper::AssistantController do
       it "returns a list of prompts when no name_filter is provided" do
         get "/discourse-ai/ai-helper/prompts"
         expect(response.status).to eq(200)
-        expect(response.parsed_body.length).to eq(6)
+        expect(response.parsed_body.length).to eq(7)
       end
 
       it "returns a list with with filtered prompts when name_filter is provided" do