Add check for extension state and error support of disabled extension on help

administrator/check.py

@@ -0,0 +1,19 @@
+from discord.ext import commands
+
+import db
+
+
+class ExtensionDisabled(commands.CheckFailure):
+    pass
+
+
+def is_enabled():
+    async def check(ctx: commands.Context):
+        if ctx.command.cog:
+            s = db.Session()
+            es = s.query(db.ExtensionState).get((ctx.command.cog.qualified_name, ctx.guild.id))
+            s.close()
+            if es and not es.state:
+                raise ExtensionDisabled()
+        return True
+    return commands.check(check)

extensions/help.py

@@ -4,6 +4,7 @@ from discord.ext.commands import CommandNotFound, MissingRequiredArgument, BadAr
     NoPrivateMessage, CommandError, NotOwner
 
 from administrator import config
+from administrator.check import ExtensionDisabled
 from administrator.logger import logger
 
 
@@ -43,7 +44,9 @@ class Help(commands.Cog):
             await ctx.message.add_reaction("\u274C")
         elif isinstance(error, NotOwner) or isinstance(error, MissingPermissions)\
                 or isinstance(error, NoPrivateMessage):
-            await ctx.message.add_reaction("\u274C")
+            await ctx.message.add_reaction("\U000026D4")
+        elif isinstance(error, ExtensionDisabled):
+            await ctx.message.add_reaction("\U0001F6AB")
         else:
             await ctx.send("An error occurred !")
             raise error