feat: Add interactive thinking feedback system

- Add /api/thinking-feedback endpoint for real-time AI responses
- Implement getThinkingFeedback() with OpenAI integration
- Add fallback positive feedback for offline scenarios
- Enhanced question-specific AI prompts for exploratory topics
- Remove generic 'what do you know about this topic' questions
- Generate contextual, topic-specific thinking questions

html/kidsai/server.js

@@ -238,6 +238,56 @@ app.post('/api/think-response', async (req, res) => {
     }
 });
 
+// API endpoint for interactive thinking feedback
+app.post('/api/thinking-feedback', async (req, res) => {
+    const { question, stepNumber, userThought, language = 'en' } = req.body;
+    
+    if (!question || !userThought || stepNumber === undefined) {
+        return res.status(400).json({
+            success: false,
+            error: 'Question, step number, and user thought are required'
+        });
+    }
+
+    try {
+        // Get AI feedback on the child's thinking
+        const feedback = await getThinkingFeedback(question, stepNumber, userThought, language);
+        
+        res.json({
+            success: true,
+            feedback: feedback,
+            question: question,
+            stepNumber: stepNumber,
+            userThought: userThought,
+            language: language
+        });
+
+    } catch (error) {
+        console.error('Thinking feedback error:', error);
+        
+        // Fallback positive feedback
+        const fallbackFeedback = {
+            response: language === 'de' 
+                ? "Interessante Gedanken! Du denkst in die richtige Richtung. 👍"
+                : "Interesting thoughts! You're thinking in the right direction. 👍",
+            encouragement: language === 'de' 
+                ? "Weiter so!"
+                : "Keep going!",
+            type: 'positive'
+        };
+        
+        res.json({
+            success: true,
+            feedback: fallbackFeedback,
+            question: question,
+            stepNumber: stepNumber,
+            userThought: userThought,
+            language: language,
+            fallback: true
+        });
+    }
+});
+
 // Function to calculate the correct answer for simple math expressions
 function calculateMathAnswer(question) {
     const questionLower = question.toLowerCase().trim();
@@ -785,12 +835,12 @@ async function getThinkingFeedback(question, thought, stepNumber, language) {
     const isGerman = language === 'de';
     
     const systemPrompt = isGerman 
-        ? "Du bist ein encourager Lernbegleiter für Kinder. Ein Kind hat über eine Frage nachgedacht und seinen Gedanken geteilt. Gib kurzes, ermutigendes Feedback (1-2 Sätze) zu ihrem Denkprozess. Sei positiv, erkenne gute Punkte an, und gib ggf. einen kleinen Hinweis für weitere Überlegungen. Nie die komplette Antwort verraten!"
-        : "You are an encouraging learning companion for children. A child has thought about a question and shared their thinking. Give brief, encouraging feedback (1-2 sentences) on their thought process. Be positive, acknowledge good points, and optionally give a small hint for further thinking. Never reveal the complete answer!";
+        ? "Du bist ein ermutigender Tutor für Kinder. Ein Kind hat zu einer Denkfrage geantwortet. Gib eine kurze, positive Rückmeldung (1-2 Sätze) zu seinem Gedanken. Sei ermutigend, auch wenn die Antwort nicht perfekt ist. Erkenne gute Ansätze an und gib sanfte Hinweise für Verbesserungen."
+        : "You are an encouraging tutor for children. A child has responded to a thinking question. Give brief, positive feedback (1-2 sentences) about their thought. Be encouraging even if the answer isn't perfect. Acknowledge good approaches and give gentle hints for improvements.";
         
     const userPrompt = isGerman 
-        ? `Frage: "${question}"\nKind's Gedanke: "${thought}"\n\nGib kurzes, ermutigendes Feedback zu diesem Gedanken und hilf beim Weiterdenken.`
-        : `Question: "${question}"\nChild's thought: "${thought}"\n\nGive brief, encouraging feedback on this thought and help with further thinking.`;
+        ? `Frage: "${question}"\nSchritt ${stepNumber}\nKind dachte: "${thought}"\n\nGib eine kurze, ermutigende Rückmeldung zu diesem Gedanken.`
+        : `Question: "${question}"\nStep ${stepNumber}\nChild thought: "${thought}"\n\nGive brief, encouraging feedback about this thought.`;
 
     try {
         const completion = await openai.chat.completions.create({
@@ -800,15 +850,22 @@ async function getThinkingFeedback(question, thought, stepNumber, language) {
                 { role: "user", content: userPrompt }
             ],
             max_tokens: 100,
-            temperature: 0.8
+            temperature: 0.7
         });
 
         const aiResponse = completion.choices[0]?.message?.content || '';
         
+        // Determine feedback type based on content
+        const responseType = aiResponse.toLowerCase().includes('gut') || 
+                           aiResponse.toLowerCase().includes('great') || 
+                           aiResponse.toLowerCase().includes('good') || 
+                           aiResponse.toLowerCase().includes('richtig') 
+                           ? 'positive' : 'neutral';
+
         return {
-            type: 'ai-powered',
-            text: aiResponse.trim(),
-            encouragement: getRandomEncouragement(language),
+            response: aiResponse.trim(),
+            encouragement: isGerman ? "Weiter so! 🌟" : "Keep going! 🌟",
+            type: responseType,
             source: 'OpenAI GPT-3.5'
         };
 
@@ -817,29 +874,3 @@ async function getThinkingFeedback(question, thought, stepNumber, language) {
         throw error;
     }
 }
-
-// Fallback thinking feedback
-function getFallbackThinkingFeedback(language) {
-    const isGerman = language === 'de';
-    
-    const responses = isGerman ? [
-        "Interessanter Gedanke! Das zeigt, dass du nachdenkst.",
-        "Gute Überlegung! Du bist auf dem richtigen Weg.",
-        "Das ist ein wichtiger Punkt! Denk weiter in diese Richtung.",
-        "Super, dass du so genau nachdenkst!"
-    ] : [
-        "Interesting thought! That shows you're thinking.",
-        "Good thinking! You're on the right track.",
-        "That's an important point! Keep thinking in that direction.",
-        "Great that you're thinking so carefully!"
-    ];
-    
-    const randomResponse = responses[Math.floor(Math.random() * responses.length)];
-    
-    return {
-        type: 'fallback',
-        text: randomResponse,
-        encouragement: getRandomEncouragement(language),
-        source: 'Fallback'
-    };
-}