Fixed a one off bug for Raring

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+#v2.0.4
+
+### Fixed
+- Fixed a one off bug where the channel topic dissapears, but modmail operations should still continue
+- Fixed linked_message_id issues.
+
 # v2.0.3
 
 Fixed some issues with how data is displayed in the info embed.

bot.py

@@ -22,7 +22,7 @@
 SOFTWARE.
 """
 
-__version__ = '2.0.3'
+__version__ = '2.0.4'
 
 import asyncio
 import textwrap
@@ -120,10 +120,14 @@ def modmail_guild(self):
             return self.guild
         else:
             return discord.utils.get(self.guilds, id=int(modmail_guild_id))
+
+    @property
+    def using_multiple_server_setup(self):
+        return self.modmail_guild != self.guild
 
     @property
     def main_category(self):
-        if self.guild:
+        if self.modmail_guild:
             return discord.utils.get(self.modmail_guild.categories, name='Mod Mail')
 
     @property
@@ -245,7 +249,7 @@ async def on_message_delete(self, message):
         """Support for deleting linked messages"""
         if message.embeds and not isinstance(message.channel, discord.DMChannel):
             message_id = str(message.embeds[0].author.url).split('/')[-1]
-            if matches:
+            if message_id.isdigit():
                 thread = await self.threads.find(channel=message.channel)
 
                 channel = thread.recipient.dm_channel

core/thread.py

@@ -135,8 +135,11 @@ def __init__(self, bot):
 
     async def populate_cache(self):
         for channel in self.bot.modmail_guild.text_channels:
+            if not self.bot.using_multiple_server_setup and channel.category != self.main_category:
+                continue
             await self.find(channel=channel)
 
+
     def __len__(self):
         return len(self.cache)
 
@@ -177,15 +180,15 @@ async def _find_from_channel(self, channel):
         if channel.topic and 'User ID: ' in channel.topic:
             user_id = int(re.findall(r'\d+', channel.topic)[0])
 
-        # BUG: This wont work with multiple categories.
-        # elif channel.topic is None:
-        #     async for message in channel.history(limit=50):
-        #         if message.embeds:
-        #             em = message.embeds[0]
-        #             matches = re.findall(r'<@(\d+)>', str(em.description))
-        #             if matches:
-        #                 user_id = int(matches[-1])
-        #                 break
+        # BUG: When discord fails to create channel topic. search through message history
+        elif channel.topic is None:
+            async for message in channel.history(limit=50):
+                if message.embeds:
+                    em = message.embeds[0]
+                    matches = re.findall(r'User ID: (\d+)', str(em.footer.text))
+                    if matches:
+                        user_id = int(matches[0])
+                        break
 
         if user_id is not None:
             if user_id in self.cache: