Initial Commit

Signed-off-by: Daniel Henry <iamdanhenry@gmail.com>

app/helpers/extract_latest_message.py

@@ -0,0 +1,46 @@
+import re
+
+def extract_latest_message(email):
+    """Extract only the most recent message from an email thread."""
+    text = email
+    
+    # Define reply separators (ordered by specificity)
+    separators = [
+        # Outlook style - most common
+        r'From:.*?Sent:.*?(?:To:|Subject:)',
+        # Horizontal rules
+        r'_{40,}',
+        r'-{40,}',
+        # "Original Message" variants
+        r'[-]+\s*Original Message\s*[-]+',
+        # Gmail/generic style
+        r'On\s+.{0,100}?\s+wrote:',
+        # Forwarded message
+        r'[-]+\s*Forwarded [Mm]essage\s*[-]+',
+    ]
+    
+    # Try each separator and take the earliest match
+    earliest_match = None
+    earliest_pos = len(text)
+    
+    for pattern in separators:
+        match = re.search(pattern, text, re.IGNORECASE | re.DOTALL)
+        if match and match.start() < earliest_pos:
+            earliest_pos = match.start()
+            earliest_match = match
+    
+    # Extract everything before the separator
+    if earliest_match:
+        latest_text = text[:earliest_pos].strip()
+    else:
+        latest_text = text
+    
+    # Remove excessive whitespace
+    latest_text = re.sub(r'\n{3,}', '\n\n', latest_text)
+    latest_text = re.sub(r' {2,}', ' ', latest_text)
+    
+    # Limit to reasonable length (adjust as needed)
+    if len(latest_text) > 2000:
+        latest_text = latest_text[:2000] + "..."
+    
+    return latest_text