Scheduled close event for thread save to config vars

bot.py

@@ -202,8 +202,32 @@ async def on_ready(self):
             print(Fore.RED + Style.BRIGHT + 'WARNING - The GUILD_ID provided does not exist!' + Style.RESET_ALL)
         else:
             await self.threads.populate_cache()
+        await self.config.update()
 
+        closures = self.config.closures.copy()
 
+        for recipient_id, items in closures.items():
+            after = (datetime.datetime.fromisoformat(items['time']) -
+                     datetime.datetime.utcnow()).total_seconds()
+            if after < 0:
+                after = 0
+            recipient = self.get_user(int(recipient_id))
+
+            thread = await self.threads.find(
+                recipient=recipient)
+
+            if not thread:
+                # If the recipient is gone or channel is deleted
+                self.config.closures.pop(str(recipient_id))
+                await self.config.update()
+                continue
+
+            # TODO: Retrieve messages/replies when bot is down, from history?
+            await thread.close(closer=self.get_user(items['closer_id']),
+                               after=after,
+                               silent=items['silent'],
+                               delete_channel=items['delete_channel'],
+                               message=items['message'])
 
     async def process_modmail(self, message):
         """Processes messages sent to the bot."""

core/config.py

@@ -7,20 +7,24 @@ class ConfigManager:
     """Class that manages a cached configuration"""
 
     allowed_to_change_in_command = {
-        'activity_message', 'activity_type', 'log_channel_id', 'mention', 'disable_autoupdates', 'prefix',
-        'main_category_id', 'sent_emoji', 'blocked_emoji', 'thread_creation_response', 'twitch_url'
+        'activity_message', 'activity_type', 'log_channel_id',
+        'mention', 'disable_autoupdates', 'prefix',
+        'main_category_id', 'sent_emoji', 'blocked_emoji',
+        'thread_creation_response', 'twitch_url'
         }
 
     internal_keys = {
-        'snippets', 'aliases', 'blocked', 'notification_squad', 'subscriptions'
+        'snippets', 'aliases', 'blocked',
+        'notification_squad', 'subscriptions',
+        'closures'
         }
 
     protected_keys = {
         'token', 'owners', 'modmail_api_token', 'guild_id', 'modmail_guild_id', 
         'mongo_uri', 'github_access_token', 'log_url'
         }
 
-    valid_keys = allowed_to_change_in_command.union(internal_keys).union(protected_keys)
+    valid_keys = allowed_to_change_in_command | internal_keys | protected_keys
 
     def __init__(self, bot):
         self.bot = bot
@@ -38,7 +42,8 @@ def populate_cache(self):
             'aliases': {},
             'blocked': {},
             'notification_squad': {},
-            'subscriptions': {}
+            'subscriptions': {},
+            'closures': {},
         }
 
         try:
@@ -47,7 +52,8 @@ def populate_cache(self):
             pass
         finally:
             data.update(os.environ)
-            data = {k.lower(): v for k, v in data.items() if k.lower() in self.valid_keys}
+            data = {k.lower(): v for k, v in data.items()
+                    if k.lower() in self.valid_keys}
             self.cache = data
 
     async def update(self, data=None):