revert; trying diffs again

app.py

@@ -17,7 +17,6 @@ from pytz import timezone # for times
 import asyncio # check if used
 import logging
 import urllib.parse
-from difflib import SequenceMatcher
 
 
 from discord.ui import Button, View
@@ -61,22 +60,10 @@ def extract_tenor_gif_url(content):
     return None
 
 
-#testing
-def escape_markdown(text: str) -> str:
-    # Escape asterisks, underscores, backticks, and pipes
-    return re.sub(r"([*_`|])", r"\\\1", text)
-
-def highlight_diff(before: str, after: str) -> tuple[str, str]:
-    before_escaped = escape_markdown(before)
-    after_escaped = escape_markdown(after)
-
-    matcher = SequenceMatcher(None, before_escaped, after_escaped)
-    for tag, i1, i2, j1, j2 in matcher.get_opcodes():
-        if tag != "equal":
-            before_highlighted = before_escaped[:i1] + "**" + before_escaped[i1:i2] + "**" + before_escaped[i2:]
-            after_highlighted = after_escaped[:j1] + "**" + after_escaped[j1:j2] + "**" + after_escaped[j2:]
-            return before_highlighted, after_highlighted
-    return before_escaped, after_escaped
+def generate_diff(before, after):
+    # Only show changed lines
+    diff_lines = list(ndiff([before], [after]))
+    return "```diff\n" + "\n".join(diff_lines) + "\n```"
 
 
 
@@ -235,15 +222,17 @@ async def on_message_edit(before, after):
             return
     
         if before.content != after.content:
+            diff_text = generate_diff(before.content or "", after.content or "")
+            diff_msg = await bot.log_channel.send(diff_text)  # Step 3: this shows colors
+            
             embed = Embed(color=Color.orange())
             embed.set_author(name=f"{before.author}    ID: {before.author.id}", icon_url=before.author.avatar.url if before.author.avatar else bot.user.avatar.url)
             embed.title = "Message Edited"
             #embed.description = f"**Before:** {before.content or '*(empty message)*'}\n**After:** {after.content or '*(empty message)*'}"
+            embed.description = "See diff below:" 
+            embed.add_field(name="Diff Reference", value=f"[Jump to diff]({diff_msg.jump_url})", inline=False)
 
-            # testing
-            highlighted_before, highlighted_after = highlight_diff(before.content or "", after.content or "")
-            embed.description = f"**Before:** {highlighted_before or '*(empty message)*'}\n**After:** {highlighted_after or '*(empty message)*'}"
-
+            
             embed.add_field(name="Author Username", value=before.author.name, inline=True)
             embed.add_field(name="Channel", value=before.channel.mention, inline=True)
             #embed.add_field(name="Message Created On", value=before.created_at.strftime("%Y-%m-%d %H:%M:%S UTC"), inline=True)
@@ -256,6 +245,7 @@ async def on_message_edit(before, after):
             #embed.set_footer(text=f"{datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S UTC')}")
             embed.set_footer(text=f"{convert_to_timezone(datetime.utcnow(), zurich_tz)}")
             await bot.log_channel.send(embed=embed)
+         
             
     except Exception as e:
         print(f"on_message_edit Error: {e}")        
@@ -643,4 +633,4 @@ with gr.Blocks() as demo:
     r"""
     # discord bot
     """)
-demo.launch()
+demo.launch()