commit f1ffe7049c592418ed8688a39207e05caecc4c76
Author: Jia Rong Yee <28086837+fourjr@users.noreply.github.com>
Date:   Sun Apr 25 21:57:40 2021 +0800

    Channel Control plugin

diff --git a/channel-control/__pycache__/channel-control.cpython-39.pyc b/channel-control/__pycache__/channel-control.cpython-39.pyc
new file mode 100644
index 0000000..7375ad6
Binary files /dev/null and b/channel-control/__pycache__/channel-control.cpython-39.pyc differ
diff --git a/channel-control/channel-control.py b/channel-control/channel-control.py
new file mode 100644
index 0000000..9a7bce2
--- /dev/null
+++ b/channel-control/channel-control.py
@@ -0,0 +1,81 @@
+import discord
+from discord.ext import commands
+
+from core import checks
+from core.checks import PermissionLevel
+from core.models import DMDisabled
+
+
+class ChannelControl(commands.Cog):
+    """Controls channels and enables/disables new thread creaation based on the number of channels"""
+    def __init__(self, bot):
+        self.bot = bot
+        self.total_allowed_channels = 500
+        self.db = self.bot.plugin_db.get_partition(self)
+
+    @commands.Cog.listener()
+    async def on_guild_channel_create(self, channel):
+        if channel.guild != self.bot.modmail_guild:
+            return
+
+        current_channels = len(self.bot.modmail_guild.channels)
+        config = await self.db.find_one({'_id': 'config'}) or {}
+        max_channel_limit = config.get('max_channel_limit') or 100
+        if current_channels / self.total_allowed_channels * 100 > max_channel_limit and self.bot.config["dm_disabled"] < DMDisabled.NEW_THREADS:
+            # disable threads
+            self.bot.config["dm_disabled"] = DMDisabled.NEW_THREADS
+
+            if config.get('disabled_full_response'):
+                self.bot.config["disabled_current_thread_response"] = config['disabled_full_response']
+
+            await self.bot.config.update()
+            em = discord.Embed(
+                title='Channel Control: New threads disabled',
+                description=f'Total Channel Count ({current_channels}) > Min limit ({max_channel_limit}%)',
+                color=self.bot.error_color
+            )
+            await self.bot.log_channel.send(embed=em)
+
+    @commands.Cog.listener()
+    async def on_guild_channel_delete(self, channel):
+        if channel.guild != self.bot.modmail_guild:
+            return
+
+        current_channels = len(self.bot.modmail_guild.channels)
+        config = await self.db.find_one({'_id': 'config'}) or {}
+        min_channel_limit = config.get('min_channel_limit') or 0
+        if current_channels / self.total_allowed_channels * 100 < min_channel_limit and self.bot.config["dm_disabled"] >= DMDisabled.NEW_THREADS:
+            # disable threads
+            self.bot.config["dm_disabled"] = DMDisabled.NONE
+
+            if config.get('disabled_default_response'):
+                self.bot.config["disabled_current_thread_response"] = config['disabled_default_response']
+
+            await self.bot.config.update()
+
+            em = discord.Embed(
+                title='Channel Control: New threads enabled',
+                description=f'Total Channel Count ({current_channels}) < Min limit ({min_channel_limit}%)',
+                color=self.bot.main_color
+            )
+            await self.bot.log_channel.send(embed=em)
+
+    @checks.has_permissions(PermissionLevel.MODERATOR)
+    @commands.command()
+    async def ccconfig(self, ctx, key: str, value: str=""):
+        """Valid keys: max_channel_limit, min_channel_limit, disabled_full_response, disabled_default_response
+        All limits should be 0-100 (percent)
+
+        Leave value blank to reset
+        """
+        if value.isdigit():
+            value = int(value)
+        if key in ('max_channel_limit', 'min_channel_limit', 'disabled_full_response, disabled_default_response'):
+            await self.db.find_one_and_update({'_id': 'config'}, {'$set': {key: value}}, upsert=True)
+            await ctx.send('Success')
+        else:
+            await ctx.send('Invalid key')
+
+
+def setup(bot):
+    bot.add_cog(ChannelControl(bot))