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cog.py
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cog.py
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# SPDX-License-Identifier: MIT
from __future__ import annotations
import asyncio
import inspect
from typing import (
TYPE_CHECKING,
Any,
Callable,
ClassVar,
Dict,
Generator,
List,
Optional,
Tuple,
Type,
TypeVar,
Union,
)
import disnake
import disnake.utils
from ._types import _BaseCommand
from .base_core import InvokableApplicationCommand
from .ctx_menus_core import InvokableMessageCommand, InvokableUserCommand
from .slash_core import InvokableSlashCommand
if TYPE_CHECKING:
from typing_extensions import Self
from disnake.interactions import ApplicationCommandInteraction
from .bot import AutoShardedBot, AutoShardedInteractionBot, Bot, InteractionBot
from .context import Context
from .core import Command
AnyBot = Union[Bot, AutoShardedBot, InteractionBot, AutoShardedInteractionBot]
__all__ = (
"CogMeta",
"Cog",
)
FuncT = TypeVar("FuncT", bound=Callable[..., Any])
MISSING: Any = disnake.utils.MISSING
def _cog_special_method(func: FuncT) -> FuncT:
func.__cog_special_method__ = None
return func
class CogMeta(type):
"""A metaclass for defining a cog.
Note that you should probably not use this directly. It is exposed
purely for documentation purposes along with making custom metaclasses to intermix
with other metaclasses such as the :class:`abc.ABCMeta` metaclass.
For example, to create an abstract cog mixin class, the following would be done.
.. code-block:: python3
import abc
class CogABCMeta(commands.CogMeta, abc.ABCMeta):
pass
class SomeMixin(metaclass=abc.ABCMeta):
pass
class SomeCogMixin(SomeMixin, commands.Cog, metaclass=CogABCMeta):
pass
.. note::
When passing an attribute of a metaclass that is documented below, note
that you must pass it as a keyword-only argument to the class creation
like the following example:
.. code-block:: python3
class MyCog(commands.Cog, name='My Cog'):
pass
Attributes
----------
name: :class:`str`
The cog name. By default, it is the name of the class with no modification.
description: :class:`str`
The cog description. By default, it is the cleaned docstring of the class.
.. versionadded:: 1.6
command_attrs: Dict[:class:`str`, Any]
A list of attributes to apply to every command inside this cog. The dictionary
is passed into the :class:`Command` options at ``__init__``.
If you specify attributes inside the command attribute in the class, it will
override the one specified inside this attribute. For example:
.. code-block:: python3
class MyCog(commands.Cog, command_attrs=dict(hidden=True)):
@commands.command()
async def foo(self, ctx):
pass # hidden -> True
@commands.command(hidden=False)
async def bar(self, ctx):
pass # hidden -> False
slash_command_attrs: Dict[:class:`str`, Any]
A list of attributes to apply to every slash command inside this cog. The dictionary
is passed into the options of every :class:`InvokableSlashCommand` at ``__init__``.
Usage of this kwarg is otherwise the same as with ``command_attrs``.
.. note:: This does not apply to instances of :class:`SubCommand` or :class:`SubCommandGroup`.
.. versionadded:: 2.5
user_command_attrs: Dict[:class:`str`, Any]
A list of attributes to apply to every user command inside this cog. The dictionary
is passed into the options of every :class:`InvokableUserCommand` at ``__init__``.
Usage of this kwarg is otherwise the same as with ``command_attrs``.
.. versionadded:: 2.5
message_command_attrs: Dict[:class:`str`, Any]
A list of attributes to apply to every message command inside this cog. The dictionary
is passed into the options of every :class:`InvokableMessageCommand` at ``__init__``.
Usage of this kwarg is otherwise the same as with ``command_attrs``.
.. versionadded:: 2.5
"""
__cog_name__: str
__cog_settings__: Dict[str, Any]
__cog_slash_settings__: Dict[str, Any]
__cog_user_settings__: Dict[str, Any]
__cog_message_settings__: Dict[str, Any]
__cog_commands__: List[Command]
__cog_app_commands__: List[InvokableApplicationCommand]
__cog_listeners__: List[Tuple[str, str]]
def __new__(cls: Type[CogMeta], *args: Any, **kwargs: Any) -> CogMeta:
name, bases, attrs = args
attrs["__cog_name__"] = kwargs.pop("name", name)
attrs["__cog_settings__"] = kwargs.pop("command_attrs", {})
attrs["__cog_slash_settings__"] = kwargs.pop("slash_command_attrs", {})
attrs["__cog_user_settings__"] = kwargs.pop("user_command_attrs", {})
attrs["__cog_message_settings__"] = kwargs.pop("message_command_attrs", {})
description = kwargs.pop("description", None)
if description is None:
description = inspect.cleandoc(attrs.get("__doc__", ""))
attrs["__cog_description__"] = description
commands = {}
app_commands = {}
listeners = {}
no_bot_cog = (
"Commands or listeners must not start with cog_ or bot_ (in method {0.__name__}.{1})"
)
new_cls = super().__new__(cls, name, bases, attrs, **kwargs)
for base in reversed(new_cls.__mro__):
for elem, value in base.__dict__.items():
if elem in commands:
del commands[elem]
if elem in app_commands:
del app_commands[elem]
if elem in listeners:
del listeners[elem]
is_static_method = isinstance(value, staticmethod)
if is_static_method:
value = value.__func__
if isinstance(value, _BaseCommand):
if is_static_method:
raise TypeError(
f"Command in method {base}.{elem!r} must not be staticmethod."
)
if elem.startswith(("cog_", "bot_")):
raise TypeError(no_bot_cog.format(base, elem))
commands[elem] = value
elif isinstance(value, InvokableApplicationCommand):
if is_static_method:
raise TypeError(
f"Application command in method {base}.{elem!r} must not be staticmethod."
)
if elem.startswith(("cog_", "bot_")):
raise TypeError(no_bot_cog.format(base, elem))
app_commands[elem] = value
elif asyncio.iscoroutinefunction(value):
if hasattr(value, "__cog_listener__"):
if elem.startswith(("cog_", "bot_")):
raise TypeError(no_bot_cog.format(base, elem))
listeners[elem] = value
new_cls.__cog_commands__ = list(commands.values()) # this will be copied in Cog.__new__
new_cls.__cog_app_commands__ = list(app_commands.values())
listeners_as_list = []
for listener in listeners.values():
for listener_name in listener.__cog_listener_names__:
# I use __name__ instead of just storing the value so I can inject
# the self attribute when the time comes to add them to the bot
listeners_as_list.append((listener_name, listener.__name__))
new_cls.__cog_listeners__ = listeners_as_list
return new_cls
def __init__(self, *args: Any, **kwargs: Any) -> None:
super().__init__(*args)
@classmethod
def qualified_name(cls) -> str:
return cls.__cog_name__
class Cog(metaclass=CogMeta):
"""The base class that all cogs must inherit from.
A cog is a collection of commands, listeners, and optional state to
help group commands together. More information on them can be found on
the :ref:`ext_commands_cogs` page.
When inheriting from this class, the options shown in :class:`CogMeta`
are equally valid here.
"""
__cog_name__: ClassVar[str]
__cog_settings__: ClassVar[Dict[str, Any]]
__cog_commands__: ClassVar[List[Command]]
__cog_app_commands__: ClassVar[List[InvokableApplicationCommand]]
__cog_listeners__: ClassVar[List[Tuple[str, str]]]
def __new__(cls, *args: Any, **kwargs: Any) -> Self:
# For issue 426, we need to store a copy of the command objects
# since we modify them to inject `self` to them.
# To do this, we need to interfere with the Cog creation process.
self = super().__new__(cls)
cmd_attrs = cls.__cog_settings__
slash_cmd_attrs = cls.__cog_slash_settings__
user_cmd_attrs = cls.__cog_user_settings__
message_cmd_attrs = cls.__cog_message_settings__
# Either update the command with the cog provided defaults or copy it.
cog_app_commands: List[InvokableApplicationCommand] = []
for c in cls.__cog_app_commands__:
if isinstance(c, InvokableSlashCommand):
c = c._update_copy(slash_cmd_attrs)
elif isinstance(c, InvokableUserCommand):
c = c._update_copy(user_cmd_attrs)
elif isinstance(c, InvokableMessageCommand):
c = c._update_copy(message_cmd_attrs)
cog_app_commands.append(c)
self.__cog_app_commands__ = tuple(cog_app_commands) # type: ignore # overriding ClassVar
# Replace the old command objects with the new copies
for app_command in self.__cog_app_commands__:
setattr(self, app_command.callback.__name__, app_command)
self.__cog_commands__ = tuple(c._update_copy(cmd_attrs) for c in cls.__cog_commands__) # type: ignore # overriding ClassVar
lookup = {cmd.qualified_name: cmd for cmd in self.__cog_commands__}
for command in self.__cog_commands__:
setattr(self, command.callback.__name__, command)
parent = command.parent
if parent is not None:
# Get the latest parent reference
parent = lookup[parent.qualified_name] # type: ignore
# Update our parent's reference to our self
parent.remove_command(command.name) # type: ignore
parent.add_command(command) # type: ignore
return self
def get_commands(self) -> List[Command]:
"""
Returns a list of commands the cog has.
Returns
-------
List[:class:`.Command`]
A :class:`list` of :class:`.Command`\\s that are
defined inside this cog.
.. note::
This does not include subcommands.
"""
return [c for c in self.__cog_commands__ if c.parent is None]
def get_application_commands(self) -> List[InvokableApplicationCommand]:
"""
Returns a list of application commands the cog has.
Returns
-------
List[:class:`.InvokableApplicationCommand`]
A :class:`list` of :class:`.InvokableApplicationCommand`\\s that are
defined inside this cog.
.. note::
This does not include subcommands.
"""
return list(self.__cog_app_commands__)
def get_slash_commands(self) -> List[InvokableSlashCommand]:
"""
Returns a list of slash commands the cog has.
Returns
-------
List[:class:`.InvokableSlashCommand`]
A :class:`list` of :class:`.InvokableSlashCommand`\\s that are
defined inside this cog.
.. note::
This does not include subcommands.
"""
return [c for c in self.__cog_app_commands__ if isinstance(c, InvokableSlashCommand)]
def get_user_commands(self) -> List[InvokableUserCommand]:
"""
Returns a list of user commands the cog has.
Returns
-------
List[:class:`.InvokableUserCommand`]
A :class:`list` of :class:`.InvokableUserCommand`\\s that are
defined inside this cog.
"""
return [c for c in self.__cog_app_commands__ if isinstance(c, InvokableUserCommand)]
def get_message_commands(self) -> List[InvokableMessageCommand]:
"""
Returns a list of message commands the cog has.
Returns
-------
List[:class:`.InvokableMessageCommand`]
A :class:`list` of :class:`.InvokableMessageCommand`\\s that are
defined inside this cog.
"""
return [c for c in self.__cog_app_commands__ if isinstance(c, InvokableMessageCommand)]
@property
def qualified_name(self) -> str:
""":class:`str`: Returns the cog's specified name, not the class name."""
return self.__cog_name__
@property
def description(self) -> str:
""":class:`str`: Returns the cog's description, typically the cleaned docstring."""
return self.__cog_description__
@description.setter
def description(self, description: str) -> None:
self.__cog_description__ = description
def walk_commands(self) -> Generator[Command, None, None]:
"""An iterator that recursively walks through this cog's commands and subcommands.
Yields
------
Union[:class:`.Command`, :class:`.Group`]
A command or group from the cog.
"""
from .core import GroupMixin
for command in self.__cog_commands__:
if command.parent is None:
yield command
if isinstance(command, GroupMixin):
yield from command.walk_commands()
def get_listeners(self) -> List[Tuple[str, Callable[..., Any]]]:
"""Returns a :class:`list` of (name, function) listener pairs the cog has.
Returns
-------
List[Tuple[:class:`str`, :ref:`coroutine <coroutine>`]]
The listeners defined in this cog.
"""
return [(name, getattr(self, method_name)) for name, method_name in self.__cog_listeners__]
@classmethod
def _get_overridden_method(cls, method: FuncT) -> Optional[FuncT]:
"""Return None if the method is not overridden. Otherwise returns the overridden method."""
return getattr(method.__func__, "__cog_special_method__", method)
@classmethod
def listener(cls, name: str = MISSING) -> Callable[[FuncT], FuncT]:
"""A decorator that marks a function as a listener.
This is the cog equivalent of :meth:`.Bot.listen`.
Parameters
----------
name: :class:`str`
The name of the event being listened to. If not provided, it
defaults to the function's name.
Raises
------
TypeError
The function is not a coroutine function or a string was not passed as
the name.
"""
if name is not MISSING and not isinstance(name, str):
raise TypeError(
f"Cog.listener expected str but received {name.__class__.__name__!r} instead."
)
def decorator(func: FuncT) -> FuncT:
actual = func
if isinstance(actual, staticmethod):
actual = actual.__func__
if not asyncio.iscoroutinefunction(actual):
raise TypeError("Listener function must be a coroutine function.")
actual.__cog_listener__ = True
to_assign = name or actual.__name__
try:
actual.__cog_listener_names__.append(to_assign)
except AttributeError:
actual.__cog_listener_names__ = [to_assign]
# we have to return `func` instead of `actual` because
# we need the type to be `staticmethod` for the metaclass
# to pick it up but the metaclass unfurls the function and
# thus the assignments need to be on the actual function
return func
return decorator
def has_error_handler(self) -> bool:
"""Whether the cog has an error handler.
.. versionadded:: 1.7
:return type: :class:`bool`
"""
return not hasattr(self.cog_command_error.__func__, "__cog_special_method__")
def has_slash_error_handler(self) -> bool:
"""Whether the cog has a slash command error handler.
:return type: :class:`bool`
"""
return not hasattr(self.cog_slash_command_error.__func__, "__cog_special_method__")
def has_user_error_handler(self) -> bool:
"""Whether the cog has a user command error handler.
:return type: :class:`bool`
"""
return not hasattr(self.cog_user_command_error.__func__, "__cog_special_method__")
def has_message_error_handler(self) -> bool:
"""Whether the cog has a message command error handler.
:return type: :class:`bool`
"""
return not hasattr(self.cog_message_command_error.__func__, "__cog_special_method__")
@_cog_special_method
async def cog_load(self) -> None:
"""A special method that is called as a task when the cog is added."""
pass
@_cog_special_method
def cog_unload(self) -> None:
"""A special method that is called when the cog gets removed.
This function **cannot** be a coroutine. It must be a regular
function.
Subclasses must replace this if they want special unloading behaviour.
"""
pass
@_cog_special_method
def bot_check_once(self, ctx: Context) -> bool:
"""A special method that registers as a :meth:`.Bot.check_once`
check.
This is for text commands only, and doesn't apply to application commands.
This function **can** be a coroutine and must take a sole parameter,
``ctx``, to represent the :class:`.Context`.
"""
return True
@_cog_special_method
def bot_check(self, ctx: Context) -> bool:
"""A special method that registers as a :meth:`.Bot.check`
check.
This is for text commands only, and doesn't apply to application commands.
This function **can** be a coroutine and must take a sole parameter,
``ctx``, to represent the :class:`.Context`.
"""
return True
@_cog_special_method
def bot_slash_command_check_once(self, inter: ApplicationCommandInteraction) -> bool:
"""A special method that registers as a :meth:`.Bot.slash_command_check_once`
check.
This function **can** be a coroutine and must take a sole parameter,
``inter``, to represent the :class:`.ApplicationCommandInteraction`.
"""
return True
@_cog_special_method
def bot_slash_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""A special method that registers as a :meth:`.Bot.slash_command_check`
check.
This function **can** be a coroutine and must take a sole parameter,
``inter``, to represent the :class:`.ApplicationCommandInteraction`.
"""
return True
@_cog_special_method
def bot_user_command_check_once(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Bot.slash_command_check_once` but for user commands."""
return True
@_cog_special_method
def bot_user_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Bot.slash_command_check` but for user commands."""
return True
@_cog_special_method
def bot_message_command_check_once(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Bot.slash_command_check_once` but for message commands."""
return True
@_cog_special_method
def bot_message_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Bot.slash_command_check` but for message commands."""
return True
@_cog_special_method
def cog_check(self, ctx: Context) -> bool:
"""A special method that registers as a :func:`~.ext.commands.check`
for every text command and subcommand in this cog.
This is for text commands only, and doesn't apply to application commands.
This function **can** be a coroutine and must take a sole parameter,
``ctx``, to represent the :class:`.Context`.
"""
return True
@_cog_special_method
def cog_slash_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""A special method that registers as a :func:`~.ext.commands.check`
for every slash command and subcommand in this cog.
This function **can** be a coroutine and must take a sole parameter,
``inter``, to represent the :class:`.ApplicationCommandInteraction`.
"""
return True
@_cog_special_method
def cog_user_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Cog.cog_slash_command_check` but for user commands."""
return True
@_cog_special_method
def cog_message_command_check(self, inter: ApplicationCommandInteraction) -> bool:
"""Similar to :meth:`.Cog.cog_slash_command_check` but for message commands."""
return True
@_cog_special_method
async def cog_command_error(self, ctx: Context, error: Exception) -> None:
"""A special method that is called whenever an error
is dispatched inside this cog.
This is for text commands only, and doesn't apply to application commands.
This is similar to :func:`.on_command_error` except only applying
to the commands inside this cog.
This **must** be a coroutine.
Parameters
----------
ctx: :class:`.Context`
The invocation context where the error happened.
error: :class:`CommandError`
The error that was raised.
"""
pass
@_cog_special_method
async def cog_slash_command_error(
self, inter: ApplicationCommandInteraction, error: Exception
) -> None:
"""A special method that is called whenever an error
is dispatched inside this cog.
This is similar to :func:`.on_slash_command_error` except only applying
to the slash commands inside this cog.
This **must** be a coroutine.
Parameters
----------
inter: :class:`.ApplicationCommandInteraction`
The interaction where the error happened.
error: :class:`CommandError`
The error that was raised.
"""
pass
@_cog_special_method
async def cog_user_command_error(
self, inter: ApplicationCommandInteraction, error: Exception
) -> None:
"""Similar to :func:`cog_slash_command_error` but for user commands."""
pass
@_cog_special_method
async def cog_message_command_error(
self, inter: ApplicationCommandInteraction, error: Exception
) -> None:
"""Similar to :func:`cog_slash_command_error` but for message commands."""
pass
@_cog_special_method
async def cog_before_invoke(self, ctx: Context) -> None:
"""A special method that acts as a cog local pre-invoke hook,
similar to :meth:`.Command.before_invoke`.
This is for text commands only, and doesn't apply to application commands.
This **must** be a coroutine.
Parameters
----------
ctx: :class:`.Context`
The invocation context.
"""
pass
@_cog_special_method
async def cog_after_invoke(self, ctx: Context) -> None:
"""A special method that acts as a cog local post-invoke hook,
similar to :meth:`.Command.after_invoke`.
This is for text commands only, and doesn't apply to application commands.
This **must** be a coroutine.
Parameters
----------
ctx: :class:`.Context`
The invocation context.
"""
pass
@_cog_special_method
async def cog_before_slash_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""A special method that acts as a cog local pre-invoke hook.
This is similar to :meth:`.Command.before_invoke` but for slash commands.
This **must** be a coroutine.
Parameters
----------
inter: :class:`.ApplicationCommandInteraction`
The interaction of the slash command.
"""
pass
@_cog_special_method
async def cog_after_slash_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""A special method that acts as a cog local post-invoke hook.
This is similar to :meth:`.Command.after_invoke` but for slash commands.
This **must** be a coroutine.
Parameters
----------
inter: :class:`.ApplicationCommandInteraction`
The interaction of the slash command.
"""
pass
@_cog_special_method
async def cog_before_user_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""Similar to :meth:`cog_before_slash_command_invoke` but for user commands."""
pass
@_cog_special_method
async def cog_after_user_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""Similar to :meth:`cog_after_slash_command_invoke` but for user commands."""
pass
@_cog_special_method
async def cog_before_message_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""Similar to :meth:`cog_before_slash_command_invoke` but for message commands."""
pass
@_cog_special_method
async def cog_after_message_command_invoke(self, inter: ApplicationCommandInteraction) -> None:
"""Similar to :meth:`cog_after_slash_command_invoke` but for message commands."""
pass
def _inject(self, bot: AnyBot) -> Self:
cls = self.__class__
# realistically, the only thing that can cause loading errors
# is essentially just the command loading, which raises if there are
# duplicates. When this condition is met, we want to undo all what
# we've added so far for some form of atomic loading.
for index, command in enumerate(self.__cog_commands__):
command.cog = self
if command.parent is None:
try:
bot.add_command(command) # type: ignore
except Exception as e:
# undo our additions
for to_undo in self.__cog_commands__[:index]:
if to_undo.parent is None:
bot.remove_command(to_undo.name) # type: ignore
raise e
for index, command in enumerate(self.__cog_app_commands__):
command.cog = self
try:
if isinstance(command, InvokableSlashCommand):
bot.add_slash_command(command)
elif isinstance(command, InvokableUserCommand):
bot.add_user_command(command)
elif isinstance(command, InvokableMessageCommand):
bot.add_message_command(command)
except Exception as e:
# undo our additions
for to_undo in self.__cog_app_commands__[:index]:
if isinstance(to_undo, InvokableSlashCommand):
bot.remove_slash_command(to_undo.name)
elif isinstance(to_undo, InvokableUserCommand):
bot.remove_user_command(to_undo.name)
elif isinstance(to_undo, InvokableMessageCommand):
bot.remove_message_command(to_undo.name)
raise e
if not hasattr(self.cog_load.__func__, "__cog_special_method__"):
bot.loop.create_task(disnake.utils.maybe_coroutine(self.cog_load))
# check if we're overriding the default
if cls.bot_check is not Cog.bot_check:
bot.add_check(self.bot_check) # type: ignore
if cls.bot_check_once is not Cog.bot_check_once:
bot.add_check(self.bot_check_once, call_once=True) # type: ignore
# Add application command checks
if cls.bot_slash_command_check is not Cog.bot_slash_command_check:
bot.add_app_command_check(self.bot_slash_command_check, slash_commands=True) # type: ignore
if cls.bot_user_command_check is not Cog.bot_user_command_check:
bot.add_app_command_check(self.bot_user_command_check, user_commands=True) # type: ignore
if cls.bot_message_command_check is not Cog.bot_message_command_check:
bot.add_app_command_check(self.bot_message_command_check, message_commands=True) # type: ignore
# Add app command one-off checks
if cls.bot_slash_command_check_once is not Cog.bot_slash_command_check_once:
bot.add_app_command_check(
self.bot_slash_command_check_once, # type: ignore
call_once=True,
slash_commands=True,
)
if cls.bot_user_command_check_once is not Cog.bot_user_command_check_once:
bot.add_app_command_check(
self.bot_user_command_check_once, call_once=True, user_commands=True # type: ignore
)
if cls.bot_message_command_check_once is not Cog.bot_message_command_check_once:
bot.add_app_command_check(
self.bot_message_command_check_once, # type: ignore
call_once=True,
message_commands=True,
)
# while Bot.add_listener can raise if it's not a coroutine,
# this precondition is already met by the listener decorator
# already, thus this should never raise.
# Outside of, memory errors and the like...
for name, method_name in self.__cog_listeners__:
bot.add_listener(getattr(self, method_name), name)
try:
if bot._command_sync_flags.sync_on_cog_actions:
bot._schedule_delayed_command_sync()
except NotImplementedError:
pass
return self
def _eject(self, bot: AnyBot) -> None:
cls = self.__class__
try:
for command in self.__cog_commands__:
if command.parent is None:
bot.remove_command(command.name) # type: ignore
for app_command in self.__cog_app_commands__:
if isinstance(app_command, InvokableSlashCommand):
bot.remove_slash_command(app_command.name)
elif isinstance(app_command, InvokableUserCommand):
bot.remove_user_command(app_command.name)
elif isinstance(app_command, InvokableMessageCommand):
bot.remove_message_command(app_command.name)
for name, method_name in self.__cog_listeners__:
bot.remove_listener(getattr(self, method_name), name)
if cls.bot_check is not Cog.bot_check:
bot.remove_check(self.bot_check) # type: ignore
if cls.bot_check_once is not Cog.bot_check_once:
bot.remove_check(self.bot_check_once, call_once=True) # type: ignore
# Remove application command checks
if cls.bot_slash_command_check is not Cog.bot_slash_command_check:
bot.remove_app_command_check(self.bot_slash_command_check, slash_commands=True) # type: ignore
if cls.bot_user_command_check is not Cog.bot_user_command_check:
bot.remove_app_command_check(self.bot_user_command_check, user_commands=True) # type: ignore
if cls.bot_message_command_check is not Cog.bot_message_command_check:
bot.remove_app_command_check(self.bot_message_command_check, message_commands=True) # type: ignore
# Remove app command one-off checks
if cls.bot_slash_command_check_once is not Cog.bot_slash_command_check_once:
bot.remove_app_command_check(
self.bot_slash_command_check_once, # type: ignore
call_once=True,
slash_commands=True,
)
if cls.bot_user_command_check_once is not Cog.bot_user_command_check_once:
bot.remove_app_command_check(
self.bot_user_command_check_once, # type: ignore
call_once=True,
user_commands=True,
)
if cls.bot_message_command_check_once is not Cog.bot_message_command_check_once:
bot.remove_app_command_check(
self.bot_message_command_check_once, # type: ignore
call_once=True,
message_commands=True,
)
finally:
try:
if bot._command_sync_flags.sync_on_cog_actions:
bot._schedule_delayed_command_sync()
except NotImplementedError:
pass
try:
self.cog_unload()
except Exception:
# TODO: Consider calling the bot's on_error handler here
pass