Enhance WhatsApp formatting correction in fix_whatsapp_formatting function

- Improved the fix_whatsapp_formatting function to handle multiple patterns for bold formatting, ensuring comprehensive conversion of markdown to WhatsApp-specific formatting.
- Added debug statements to track the presence of double asterisks before and after processing, aiding in troubleshooting and validation of formatting corrections.
- Updated the system message in chat_with_session_memory to include specific examples of correct and incorrect formatting, reinforcing user understanding of WhatsApp formatting rules.

ai_chat.py

@@ -9,11 +9,27 @@ def fix_whatsapp_formatting(text: str) -> str:
     """
     Convert markdown formatting to WhatsApp formatting
     """
-    # Fix double asterisks to single asterisks for bold
-    text = re.sub(r'\*\*(.*?)\*\*', r'*\1*', text)
+    print(f"DEBUG - Original text has ** count: {text.count('**')}")
+    
+    # Multiple passes to catch all patterns
+    for i in range(3):  # Up to 3 passes to catch nested patterns
+        original_text = text
+        
+        # Fix double asterisks to single asterisks for bold (multiple patterns)
+        text = re.sub(r'\*\*([^*]+)\*\*', r'*\1*', text)
+        text = re.sub(r'\*\*(\w+)\*\*', r'*\1*', text)
+        text = re.sub(r'\*\*([^*\n]+?)\*\*', r'*\1*', text)
+        text = re.sub(r'\*\*([^*]{1,50}?)\*\*', r'*\1*', text)
+        
+        # Brute force: Replace any remaining ** with *
+        text = text.replace('**', '*')
+        
+        if text == original_text:
+            break  # No more changes
     
     # Fix double underscores to single underscores for italic
-    text = re.sub(r'__(.*?)__', r'_\1_', text)
+    text = re.sub(r'__([^_]+)__', r'_\1_', text)
+    text = text.replace('__', '_')
     
     # Fix markdown links [text](url) to WhatsApp format
     text = re.sub(r'\[([^\]]+)\]\(([^)]+)\)', r'\1: \2', text)
@@ -21,6 +37,16 @@ def fix_whatsapp_formatting(text: str) -> str:
     # Remove any remaining square brackets
     text = re.sub(r'\[([^\]]+)\]', r'\1', text)
     
+    # Final safety check
+    remaining_double = text.count('**')
+    print(f"DEBUG - After processing ** count: {remaining_double}")
+    
+    if '**' in text:
+        print(f"DEBUG - Markdown still found after processing: {text}")
+        # Nuclear option: replace ALL ** with *
+        text = text.replace('**', '*')
+        print(f"DEBUG - After nuclear option: {text}")
+    
     return text
 
 def chat_with_session_memory(state):
@@ -82,6 +108,13 @@ def chat_with_session_memory(state):
         "💰 Price: *RXXX,XXX*\n"
         "🔑 Features: Feature1, Feature2, Feature3\n"
         "🔗 View listing: https://url.com\n"
+        "\n🚨 SPECIFIC EXAMPLES OF WHAT NOT TO DO IN TERMS OF ADDING BOLD TO LETTERS:\n"
+        "❌ WRONG: 🔑 **Features**:\n"
+        "✅ CORRECT: 🔑 *Features*:\n"
+        "❌ WRONG: 📍 **Tags**:\n"
+        "✅ CORRECT: 📍 *Tags*:\n"
+        "❌ WRONG: **Large Warehouse in Randburg**\n"
+        "✅ CORRECT: *Large Warehouse in Randburg*\n"
         "\n🚨 REMEMBER: WhatsApp is NOT markdown. Use *single asterisks* and emojis ONLY.\n"
     )
     
@@ -208,9 +241,17 @@ def chat_with_session_memory(state):
         response = llm.invoke(messages)
         ai_response = response.content
         
+        # Debug: Check original response
+        if '**' in ai_response:
+            print(f"DEBUG - BEFORE processing: Found ** in response: {ai_response[:200]}...")
+        
         # Post-process to fix any markdown formatting that slipped through
         ai_response = fix_whatsapp_formatting(ai_response)
         
+        # Debug: Check after processing
+        if '**' in ai_response:
+            print(f"DEBUG - AFTER processing: Still found ** in response: {ai_response[:200]}...")
+        
         # Save messages to database (this will be handled by the async wrapper)
         return {
             "response": ai_response,