Poll remove from database when message/channel/guild suppression

db/Polls.py

@@ -7,13 +7,15 @@ class Polls(Base):
     id = Column(Integer, primary_key=True)
     message = Column(BigInteger, nullable=False, unique=True)
     channel = Column(BigInteger, nullable=False)
+    guild = Column(BigInteger, nullable=False)
     author = Column(BigInteger, nullable=False)
     reactions = Column(String, nullable=False)
     multi = Column(Boolean, nullable=False, default=False)
 
-    def __init__(self, message: int, channel: int, author: int, reactions: [str], multi: bool = False):
+    def __init__(self, message: int, channel: int, guild: int, author: int, reactions: [str], multi: bool = False):
         self.message = message
         self.channel = channel
+        self.guild = guild
         self.author = author
         self.reactions = str(reactions)
         self.multi = multi

extensions/poll.py

@@ -1,7 +1,8 @@
 from datetime import datetime
 
+from discord.abc import GuildChannel
 from discord.ext import commands
-from discord import Embed, RawReactionActionEvent
+from discord import Embed, RawReactionActionEvent, RawMessageDeleteEvent, RawBulkMessageDeleteEvent, TextChannel, Guild
 from discord.ext.commands import BadArgument
 
 import db
@@ -46,13 +47,12 @@ class Poll(commands.Cog):
                 for reaction in reactions:
                     await message.add_reaction(reaction)
                 s = db.Session()
-                s.add(db.Polls(message.id, ctx.channel.id, ctx.message.author.id, reactions, multi))
+                s.add(db.Polls(message.id, ctx.channel.id, ctx.guild.id, ctx.message.author.id, reactions, multi))
                 s.commit()
                 s.close()
                 await ctx.message.delete()
 
     @poll.group("help", pass_context=True)
-    @commands.guild_only()
     async def poll_help(self, ctx: commands.Context):
         embed = Embed(title="Poll help")
         embed.add_field(name="poll <name> [multi|m] <Choice N°1> <Choice N°2> ... <Choice N°11>",
@@ -101,6 +101,40 @@ class Poll(commands.Cog):
         session.delete(poll)
         session.commit()
 
+    @commands.Cog.listener()
+    async def on_raw_message_delete(self, message: RawMessageDeleteEvent):
+        s = db.Session()
+        p = s.query(db.Polls).filter(db.Polls.message == message.message_id).first()
+        if p:
+            s.delete(p)
+            s.commit()
+        s.close()
+
+    @commands.Cog.listener()
+    async def on_raw_bulk_message_delete(self, messages: RawBulkMessageDeleteEvent):
+        s = db.Session()
+        for p in s.query(db.Polls).filter(db.Polls.message.in_(messages.message_ids)).all():
+            s.delete(p)
+        s.commit()
+        s.close()
+
+    @commands.Cog.listener()
+    async def on_guild_channel_delete(self, channel: GuildChannel):
+        if isinstance(channel, TextChannel):
+            s = db.Session()
+            for p in s.query(db.Polls).filter(db.Polls.channel == channel.id).all():
+                s.delete(p)
+            s.commit()
+            s.close()
+
+    @commands.Cog.listener()
+    async def on_guild_remove(self, guild: Guild):
+        s = db.Session()
+        for p in s.query(db.Polls).filter(db.Polls.guild == guild.id).all():
+            s.delete(p)
+        s.commit()
+        s.close()
+
 
 def setup(bot):
     logger.info(f"Loading...")