Send to owners (#2738)

* Add bot.send_to_owner

resolves #2665

Adds some basic methods and config entries.

Does not add commands for modifying this yet.

* Use send_to_owners in events

* handle feedback

redbot/core/bot.py

@@ -20,6 +20,8 @@ from .utils import common_filters
 
 CUSTOM_GROUPS = "CUSTOM_GROUPS"
 
+log = logging.getLogger("redbot")
+
 
 def _is_submodule(parent, child):
     return parent == child or child.startswith(parent + ".")
@@ -60,6 +62,8 @@ class RedBase(commands.GroupMixin, commands.bot.BotBase, RPCMixin):
             disabled_commands=[],
             disabled_command_msg="That command is disabled.",
             api_tokens={},
+            extra_owner_destinations=[],
+            owner_opt_out_list=[],
         )
 
         self.db.register_guild(
@@ -464,6 +468,47 @@ class RedBase(commands.GroupMixin, commands.bot.BotBase, RPCMixin):
                 ctx.permission_state = commands.PermState.DENIED_BY_HOOK
                 return False
 
+    async def get_owner_notification_destinations(self) -> List[discord.abc.Messageable]:
+        """
+        Gets the users and channels to send to
+        """
+        destinations = []
+        opt_outs = await self.db.owner_opt_out_list()
+        for user_id in (self.owner_id, *self._co_owners):
+            if user_id not in opt_outs:
+                user = self.get_user(user_id)
+                if user:
+                    destinations.append(user)
+
+        channel_ids = await self.db.extra_owner_destinations()
+        for channel_id in channel_ids:
+            channel = self.get_channel(channel_id)
+            if channel:
+                destinations.append(channel)
+
+        return destinations
+
+    async def send_to_owners(self, content=None, **kwargs):
+        """
+        This sends something to all owners and their configured extra destinations.
+
+        This takes the same arguments as discord.abc.Messageable.send
+
+        This logs failing sends
+        """
+        destinations = await self.get_owner_notification_destinations()
+
+        async def wrapped_send(location, content=None, **kwargs):
+            try:
+                await location.send(content, **kwargs)
+            except Exception as _exc:
+                log.exception(
+                    f"I could not send an owner notification to ({location.id}){location}"
+                )
+
+        sends = [wrapped_send(d, content, **kwargs) for d in destinations]
+        await asyncio.gather(*sends)
+
 
 class Red(RedBase, discord.AutoShardedClient):
     """

redbot/core/events.py

@@ -120,24 +120,12 @@ def init_events(bot, cli_flags):
                     "but you're using {}".format(data["info"]["version"], red_version)
                 )
 
-                owners = []
-                owner = bot.get_user(bot.owner_id)
-                if owner is not None:
-                    owners.append(owner)
-
-                for co_owner in bot._co_owners:
-                    co_owner = bot.get_user(co_owner)
-                    if co_owner is not None:
-                        owners.append(co_owner)
-
-                for owner in owners:
-                    with contextlib.suppress(discord.HTTPException):
-                        await owner.send(
-                            "Your Red instance is out of date! {} is the current "
-                            "version, however you are using {}!".format(
-                                data["info"]["version"], red_version
-                            )
-                        )
+                await bot.send_to_owners(
+                    "Your Red instance is out of date! {} is the current "
+                    "version, however you are using {}!".format(
+                        data["info"]["version"], red_version
+                    )
+                )
         INFO2 = []
 
         mongo_enabled = storage_type() != "JSON"