SillyBubble/index.js

// SillyBubble - Dynamic Chat Bubble Image Generation Extension
import { extension_settings, getContext } from "../../../extensions.js";
import { saveSettingsDebounced, callPopup } from "../../../../script.js";

// Extension configuration
const extensionName = "SillyBubble";
const extensionFolderPath = `scripts/extensions/third-party/${extensionName}`;

// Default settings
const defaultSettings = {
  image_service_url: "image.php",
  default_style: "default",
  enabled: true
};

// Make sure settings exist
if (!extension_settings[extensionName]) {
  extension_settings[extensionName] = {};
}

// Apply defaults for any missing settings
if (Object.keys(extension_settings[extensionName]).length === 0) {
  Object.assign(extension_settings[extensionName], defaultSettings);
}

// Function for AI to call - generates markdown image with URL-encoded text
function generateChatBubbleImage(text, style) {
  if (!extension_settings[extensionName].enabled) {
    return text;
  }

  // Use default style if not specified
  const bubbleStyle = style || extension_settings[extensionName].default_style;
  
  // URL encode the text parameter
  const encodedText = encodeURIComponent(text);
  
  // Construct the URL with the encoded text
  const imageUrl = `${extension_settings[extensionName].image_service_url}?q=${encodedText}`;
  
  // Add style parameter if specified
  const fullUrl = bubbleStyle !== "default" 
    ? `${imageUrl}&style=${bubbleStyle}` 
    : imageUrl;
  
  // Return markdown image format
  return `![](${fullUrl})`;
}

// Load extension settings into UI
function loadSettings() {
  // Update UI with current settings
  $("#sillybubble_enabled").prop("checked", extension_settings[extensionName].enabled).trigger("input");
  $("#sillybubble_image_url").val(extension_settings[extensionName].image_service_url).trigger("input");
  $("#sillybubble_default_style").val(extension_settings[extensionName].default_style).trigger("input");
}

// Handle enable/disable toggle
function onEnabledInput(event) {
  const value = Boolean($(event.target).prop("checked"));
  extension_settings[extensionName].enabled = value;
  saveSettingsDebounced();
}

// Handle image service URL changes
function onImageUrlInput(event) {
  const value = $(event.target).val();
  extension_settings[extensionName].image_service_url = value;
  saveSettingsDebounced();
}

// Handle default style changes
function onDefaultStyleInput(event) {
  const value = $(event.target).val();
  extension_settings[extensionName].default_style = value;
  saveSettingsDebounced();
}

// Test function to visualize a bubble
function onTestButtonClick() {
  const testText = "This is a test chat bubble generated by SillyBubble!";
  const markdown = generateChatBubbleImage(testText);
  const testPopup = `
    <div class="sillybubble-test">
      <p>Generated Markdown:</p>
      <pre>${markdown.replace(/</g, '&lt;').replace(/>/g, '&gt;')}</pre>
      <p>Preview (if connected to image service):</p>
      <div>${markdown}</div>
    </div>
  `;
  
  callPopup(testPopup, 'text');
}

// Register function tool
function registerFunctionTool() {
  try {
    // Add function directly to context
    const context = getContext();
    if (context) {
      context.generateChatBubbleImage = generateChatBubbleImage;
      console.log(`[${extensionName}] Function added to context: generateChatBubbleImage`);
      
      // Check if registerFunctionTool exists in context
      if (typeof context.registerFunctionTool === 'function') {
        // Define parameter schema following JSON schema format
        const bubbleSchema = Object.freeze({
          $schema: 'http://json-schema.org/draft-04/schema#',
          type: 'object',
          properties: {
            text: {
              type: 'string',
              description: 'The text to display in the chat bubble'
            },
            style: {
              type: 'string',
              description: 'The visual style of the chat bubble (default, modern, retro, minimal)'
            },
          },
          required: ['text']
        });

        // Register the function tool using SillyTavern's own API
        context.registerFunctionTool({
          name: 'generateChatBubbleImage',
          displayName: 'Chat Bubble Image',
          description: 'Creates a markdown image link with the text displayed as a styled chat bubble. Use when you want to visually style messages or display text in a speech bubble.',
          parameters: bubbleSchema,
          action: async (args) => {
            if (!args?.text) return '';
            return generateChatBubbleImage(args.text, args.style);
          },
          formatMessage: () => '',
        });
        
        console.log(`[${extensionName}] Function tool registered via context.registerFunctionTool`);
      } else {
        console.warn(`[${extensionName}] registerFunctionTool not available in context`);
      }
    } else {
      console.warn(`[${extensionName}] Unable to get context for function registration`);
    }
  } catch (error) {
    console.error(`[${extensionName}] Error registering function tool:`, error);
  }
}

// Initialize extension
jQuery(async () => {
  console.log(`[${extensionName}] Initializing...`);
  
  try {
    // Load settings HTML
    const settingsHtml = await $.get(`${extensionFolderPath}/example.html`);
    // Visual extensions go in the right column (extensions_settings2)
    $("#extensions_settings2").append(settingsHtml);
    
    // Register event listeners
    $("#sillybubble_enabled").on("input", onEnabledInput);
    $("#sillybubble_image_url").on("input", onImageUrlInput);
    $("#sillybubble_default_style").on("input", onDefaultStyleInput);
    $("#sillybubble_test_button").on("click", onTestButtonClick);
    
    // Initial attempt to register the function tool
    registerFunctionTool();
    
    // Make function globally accessible as fallback
    window.generateChatBubbleImage = generateChatBubbleImage;
    
    // Wait for SillyTavern to fully initialize, then register again
    $(document).ready(() => {
      // Try again after a short delay
      setTimeout(() => registerFunctionTool(), 2000);
      
      // Final attempt after SillyTavern is fully loaded
      setTimeout(() => registerFunctionTool(), 10000);
    });
    
    // Load settings
    loadSettings();
    console.log(`[${extensionName}] Initialization complete`);
  } catch (error) {
    console.error(`[${extensionName}] Initialization error:`, error);
  }
});