Move startup checks and logs to their own cog

This is to avoid needed to use wait_until_guild_available during the setup hook.

1 files changed, 42 insertions, 0 deletions

diff --git a/bot/exts/utilities/logging.py b/bot/exts/utilities/logging.py
new file mode 100644
index 00000000..e1d09fdf
--- /dev/null
+++ b/bot/exts/utilities/logging.py
@@ -0,0 +1,42 @@
+from botcore.utils.logging import get_logger
+from discord.ext.commands import Cog
+
+from bot import constants
+from bot.bot import Bot
+
+log = get_logger(__name__)
+
+
+class Logging(Cog):
+    """Debug logging module."""
+
+    def __init__(self, bot: Bot):
+        self.bot = bot
+
+    async def cog_load(self) -> None:
+        """Announce our presence to the configured dev-log channel after checking channel constants."""
+        await self.check_channels()
+        await self.bot.log_to_dev_log(
+            title=self.bot.name,
+            details="Connected!",
+        )
+
+    async def check_channels(self) -> None:
+        """Verifies that all channel constants refer to channels which exist."""
+        await self.bot.wait_until_guild_available()
+
+        if constants.Client.debug:
+            log.info("Skipping Channels Check.")
+            return
+
+        all_channels_ids = [channel.id for channel in self.bot.get_all_channels()]
+        for name, channel_id in vars(constants.Channels).items():
+            if name.startswith("_"):
+                continue
+            if channel_id not in all_channels_ids:
+                log.error(f'Channel "{name}" with ID {channel_id} missing')
+
+
+async def setup(bot: Bot) -> None:
+    """Load the Logging cog."""
+    await bot.add_cog(Logging(bot))