🚸 provide details on truncation

Signed-off-by: peter szemraj <peterszemraj@gmail.com>

app.py

@@ -1,5 +1,6 @@
 import contextlib
 import logging
+import re
 import time
 from pathlib import Path
 
@@ -68,7 +69,14 @@ def proc_submission(
 
     if processed["was_truncated"]:
         tr_in = processed["truncated_text"]
-        msg = f"Input text was truncated to {max_input_length} words (based on whitespace)"
+        # create elaborate HTML warning
+        input_wc = re.split(r"\s+", input_text)
+        msg = f"""
+        <div style="background-color: #f44336; color: white; padding: 20px;">
+        <h3>Warning</h3>
+        <p>Input text was truncated to {max_input_length} words. This is about {100*max_input_length/len(input_wc):.2f}% of the submission.</p>
+        </div>
+        """
         logging.warning(msg)
         history["WARNING"] = msg
     else: