Add AI-powered title emoji helper

Author: beNative

components/PromptEditor.tsx

@@ -83,6 +83,7 @@ const DocumentEditor: React.FC<DocumentEditorProps> = ({ documentNode, onSave, o
   const [isDirty, setIsDirty] = useState(false);
   const [isSaving, setIsSaving] = useState(false);
   const [isGeneratingTitle, setIsGeneratingTitle] = useState(false);
+  const [isGeneratingEmoji, setIsGeneratingEmoji] = useState(false);
   const [isCopied, setIsCopied] = useState(false);
   const [viewMode, setViewMode] = useState<ViewMode>(resolveDefaultViewMode(documentNode.default_view_mode, documentNode.language_hint));
   const [splitSize, setSplitSize] = useState(50);
@@ -389,6 +390,31 @@ const DocumentEditor: React.FC<DocumentEditorProps> = ({ documentNode, onSave, o
     }
   };
 
+  const handleAddEmojiToTitle = async () => {
+    if (!settings.llmProviderUrl || !settings.llmModelName || !title.trim()) return;
+    setIsGeneratingEmoji(true);
+    setError(null);
+    addLog('INFO', `Attempting to generate emoji for title "${title}".`);
+    try {
+      const emoji = await llmService.generateEmojiForTitle(title, settings, addLog);
+      setTitle((currentTitle) => {
+        const baseTitle = currentTitle.trim();
+        const emojiPrefixRegex = /^[\p{Extended_Pictographic}\p{Emoji_Presentation}\p{Emoji}\ufe0f]+\s*/u;
+        const strippedTitle = baseTitle.replace(emojiPrefixRegex, '').trim();
+        if (!strippedTitle) {
+          return `${emoji}`;
+        }
+        return `${emoji} ${strippedTitle}`;
+      });
+    } catch (err) {
+      const message = err instanceof Error ? err.message : 'Unknown error';
+      setError(`Could not generate emoji: ${message}`);
+      addLog('ERROR', `Could not generate emoji: ${message}`);
+    } finally {
+      setIsGeneratingEmoji(false);
+    }
+  };
+
   const acceptRefinement = () => {
     if (refinedContent) {
       setContent(refinedContent);
@@ -527,6 +553,23 @@ const DocumentEditor: React.FC<DocumentEditorProps> = ({ documentNode, onSave, o
       <div className="flex justify-between items-center px-4 h-7 gap-4 border-b border-border-color flex-shrink-0 bg-secondary">
         <div className="flex items-center gap-3 flex-1 min-w-0">
             <input type="text" value={title} onChange={(e) => setTitle(e.target.value)} placeholder="Document Title" disabled={isGeneratingTitle} className="bg-transparent text-base font-semibold text-text-main focus:outline-none w-full truncate"/>
+            {supportsAiTools && (
+              <IconButton
+                onClick={handleAddEmojiToTitle}
+                disabled={
+                  isGeneratingEmoji ||
+                  !title.trim() ||
+                  !settings.llmProviderUrl ||
+                  !settings.llmModelName
+                }
+                tooltip="Add Emoji to Title"
+                size="xs"
+                variant="ghost"
+                className="flex-shrink-0"
+              >
+                {isGeneratingEmoji ? <Spinner /> : <span className="text-base">😊</span>}
+              </IconButton>
+            )}
             {supportsAiTools && (
               <IconButton onClick={handleGenerateTitle} disabled={isGeneratingTitle || !content.trim() || !settings.llmProviderUrl} tooltip="Regenerate Title with AI" size="xs" variant="ghost" className="flex-shrink-0">
                 {isGeneratingTitle ? <Spinner /> : <RefreshIcon className="w-4 h-4 text-primary" />}

services/llmService.ts

@@ -31,6 +31,19 @@ const createBody = (apiType: 'ollama' | 'openai' | 'unknown', model: string, con
     });
 };
 
+const extractEmoji = (raw: string): string | null => {
+  const trimmed = raw.trim();
+  if (!trimmed) return null;
+  const chars = Array.from(trimmed);
+  const emojiRegex = /\p{Extended_Pictographic}/u;
+  for (const char of chars) {
+    if (emojiRegex.test(char)) {
+      return char;
+    }
+  }
+  return null;
+};
+
 const makeLLMRequest = async (
   metaPrompt: string,
   settings: Settings,
@@ -114,4 +127,18 @@ Title:`;
     addLog('INFO', `Successfully generated and cleaned title: "${cleanedTitle}"`);
     return cleanedTitle;
   },
+  generateEmojiForTitle: async (title: string, settings: Settings, addLog: (level: LogLevel, message: string) => void): Promise<string> => {
+    const metaPrompt = `You will be given the title of a document. Respond with exactly one emoji that best represents the theme or mood of that title. Do not include any additional words, punctuation, or explanation. If no emoji is appropriate, respond with a single page icon emoji.
+
+Title:
+---
+${title}
+---
+Emoji:`;
+
+    const result = await makeLLMRequest(metaPrompt, settings, addLog);
+    const emoji = extractEmoji(result) ?? '📄';
+    addLog('INFO', `Generated emoji "${emoji}" for title "${title}"`);
+    return emoji;
+  },
 };