From f1716d76360c25b289337df7a5b8e5cf743eb092 Mon Sep 17 00:00:00 2001
From: Mega-JC <65417594+Mega-JC@users.noreply.github.com>
Date: Sun, 28 Jul 2024 16:31:08 +0200
Subject: [PATCH] Refactor 'crosspost_cmp()' to use better message content
 comparison function, split 'message_length_threshold' into same and
 cross-channel cases

---
 pcbot/exts/anti_crosspost.py | 51 ++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 22 deletions(-)

diff --git a/pcbot/exts/anti_crosspost.py b/pcbot/exts/anti_crosspost.py
index 86ef729..38c0ea9 100644
--- a/pcbot/exts/anti_crosspost.py
+++ b/pcbot/exts/anti_crosspost.py
@@ -190,7 +190,9 @@ async def on_message(self, message: discord.Message):
         ):
             return
 
-        logger.debug(f"Received noteworthy message from {message.author.name}: {message.jump_url}")
+        logger.debug(
+            f"Received noteworthy message from {message.author.name}: {message.jump_url}"
+        )
 
         # Attempt to enforce the cache size limit
         for user_id in list(self.crossposting_cache.keys()):
@@ -216,18 +218,21 @@ async def on_message(self, message: discord.Message):
             # Check for crossposts or duplicates in existing message groups
             for messages in user_cache["message_groups"]:
                 for existing_message in messages:
-                    if (
-                        message.channel.id == existing_message.channel.id
-                        and len(message.content)
-                        < self.same_channel_message_length_threshold
-                    ) or (
-                        message.channel.id != existing_message.channel.id
-                        and len(message.content)
-                        < self.cross_channel_message_length_threshold
+                    if message.content and (
+                        (
+                            message.channel.id == existing_message.channel.id
+                            and len(message.content)
+                            < self.same_channel_message_length_threshold
+                        )
+                        or (
+                            message.channel.id != existing_message.channel.id
+                            and len(message.content)
+                            < self.cross_channel_message_length_threshold
+                        )
                     ):
                         # enforce same-channel and cross-channel message length thresholds in order for them to be considered crossposts
                         continue
-                    
+
                     elif (
                         await crosspost_cmp(message, existing_message)
                         and message.created_at.timestamp()
@@ -239,18 +244,20 @@ async def on_message(self, message: discord.Message):
                             f"Found crosspost for user {message.author.name}, message URL {message.jump_url}!!!!!!!!!!"
                         )
 
-                        # try:
-                        #     alert_message = await message.reply(
-                        #         "This message is a recent crosspost/duplicate among the following messages: "
-                        #         + ", ".join([m.jump_url for m in messages])
-                        #         + ".\n\nPlease delete all duplicate messages."
-                        #     )
-                        #     user_cache["message_to_alert"][
-                        #         message.id
-                        #     ] = alert_message.id
-                        #     logger.debug(f"Sent alert message for crosspost URL {message.jump_url}")
-                        # except discord.HTTPException as e:
-                        #     logger.debug(f"Failed to send alert message: {e}")
+                        try:
+                            alert_message = await message.reply(
+                                "This message is a recent crosspost/duplicate among the following messages: "
+                                + ", ".join([m.jump_url for m in messages])
+                                + ".\n\nPlease delete all duplicate messages."
+                            )
+                            user_cache["message_to_alert"][
+                                message.id
+                            ] = alert_message.id
+                            logger.debug(
+                                f"Sent alert message for crosspost URL {message.jump_url}"
+                            )
+                        except discord.HTTPException as e:
+                            logger.debug(f"Failed to send alert message: {e}")
                         break
                 else:
                     continue