markdown formatting improvement

app.py

@@ -15,6 +15,7 @@ from flask_limiter.util import get_remote_address
 import google.generativeai as genai
 import requests
 from dotenv import load_dotenv
+import markdown
 
 # Load environment variables
 load_dotenv()
@@ -111,54 +112,7 @@ def is_valid_pdf(pdf_path):
         return False
 
 def format_summary(summary):
-    """Converts markdown-like text to HTML formatting, including nested lists (both ordered and unordered)."""
-    summary = re.sub(r'\*\*(.*?)\*\*', r'<strong>\1</strong>', summary)  # Bold text
-    summary = re.sub(r'\*(?!\s)(.*?)\*', r'<em>\1</em>', summary)  # Italic text (ignoring lists)
-    
-    lines = summary.split('\n')
-    formatted_lines = []
-    list_stack = []  # Track nesting levels and types
-    
-    for line in lines:
-        unordered_match = re.match(r'^(\s*)\*\s(.+)', line)  # Matches "* item"
-        ordered_match = re.match(r'^(\s*)(\d+)\.\s(.+)', line)  # Matches "1. item"
-        
-        if unordered_match or ordered_match:
-            indent = unordered_match.group(1) if unordered_match else ordered_match.group(1)
-            level = len(indent) // 4  # Assume 4 spaces per indent level
-            
-            list_type = '<ul>' if unordered_match else '<ol>'
-            list_tag = '<li>{}</li>'.format(unordered_match.group(2) if unordered_match else ordered_match.group(3))
-            
-            # Close lists if necessary
-            while list_stack and len(list_stack) > level:
-                formatted_lines.append('</{}>'.format(list_stack.pop()))
-            
-            # Open new lists if necessary
-            while len(list_stack) < level:
-                formatted_lines.append(list_type)
-                list_stack.append(list_type[1:3])  # Store 'ul' or 'ol'
-            
-            # Handle list type switching (unordered ↔ ordered)
-            if list_stack and list_stack[-1] != list_type[1:3]:
-                formatted_lines.append('</{}>'.format(list_stack.pop()))
-                formatted_lines.append(list_type)
-                list_stack.append(list_type[1:3])
-            
-            formatted_lines.append(list_tag)
-        
-        else:
-            # Close any open lists before adding non-list content
-            while list_stack:
-                formatted_lines.append('</{}>'.format(list_stack.pop()))
-            
-            formatted_lines.append(line.replace("\n", "<br>"))
-    
-    # Close any remaining lists
-    while list_stack:
-        formatted_lines.append('</{}>'.format(list_stack.pop()))
-    
-    return '\n'.join(formatted_lines)
+    return markdown.markdown(summary)
 
 def resize_image(image, max_size=1080):
     width, height = image.size

requirements.txt

@@ -9,3 +9,4 @@ flask-limiter==3.10.1
 google-generativeai==0.8.3
 requests==2.31.0
 python-dotenv==1.0.1
+markdown==3.7