Implement permissions decorator for cogs. (#237)

Author: benwoo1110

discord_slash/client.py

@@ -876,11 +876,11 @@ def wrapper(cmd):
     def permission(self, guild_id: int, permissions: list):
         """
         Decorator that add permissions. This will set the permissions for a single guild, you can use it more than once for each command.
+
         :param guild_id: ID of the guild for the permissions.
         :type guild_id: int
-        :param permissions: Permission requirements of the slash command. Default ``None``.
-        :type permissions: dict
-
+        :param permissions: List of permissions to be set for the specified guild.
+        :type permissions: list
         """
 
         def wrapper(cmd):

discord_slash/cog_ext.py

@@ -50,8 +50,14 @@ async def ping(self, ctx: SlashContext):
     :param connector: Kwargs connector for the command. Default ``None``.
     :type connector: dict
     """
+    if not permissions:
+        permissions = {}
 
     def wrapper(cmd):
+        decorator_permissions = getattr(cmd, "__permissions__", None)
+        if decorator_permissions:
+            permissions.update(decorator_permissions)
+
         desc = description or inspect.getdoc(cmd)
         if options is None:
             opts = manage_commands.generate_options(cmd, desc, connector)
@@ -138,8 +144,14 @@ async def group_say(self, ctx: SlashContext, text: str):
     base_description = base_description or base_desc
     subcommand_group_description = subcommand_group_description or sub_group_desc
     guild_ids = guild_ids if guild_ids else []
+    if not base_permissions:
+        base_permissions = {}
 
     def wrapper(cmd):
+        decorator_permissions = getattr(cmd, "__permissions__", None)
+        if decorator_permissions:
+            base_permissions.update(decorator_permissions)
+
         desc = description or inspect.getdoc(cmd)
         if options is None:
             opts = manage_commands.generate_options(cmd, desc, connector)
@@ -177,6 +189,25 @@ def wrapper(cmd):
     return wrapper
 
 
+def permission(guild_id: int, permissions: list):
+    """
+    Decorator that add permissions. This will set the permissions for a single guild, you can use it more than once for each command.
+
+    :param guild_id: ID of the guild for the permissions.
+    :type guild_id: int
+    :param permissions: List of permissions to be set for the specified guild.
+    :type permissions: list
+    """
+
+    def wrapper(cmd):
+        if not getattr(cmd, "__permissions__", None):
+            cmd.__permissions__ = {}
+        cmd.__permissions__[guild_id] = permissions
+        return cmd
+
+    return wrapper
+
+
 def cog_component(
     *,
     messages: typing.Union[int, discord.Message, list] = None,