feat(moderation): Implement notes and warnings.

src/modules/moderation/tickets/warning.py

@@ -0,0 +1,66 @@
+from typing import TYPE_CHECKING, Optional
+import datetime as dt
+
+import discord
+from meta import LionBot
+from utils.lib import utc_now
+
+from ..ticket import Ticket, ticket_factory
+from ..data import TicketType, TicketState, ModerationData
+from .. import logger, babel
+
+if TYPE_CHECKING:
+    from ..cog import ModerationCog
+
+_p = babel._p
+
+
+@ticket_factory(TicketType.WARNING)
+class WarnTicket(Ticket):
+    __slots__ = ()
+
+    @classmethod
+    async def create(
+        cls, bot: LionBot, guildid: int, userid: int,
+        moderatorid: int, content: Optional[str], expiry=None,
+        **kwargs
+    ):
+        modcog: 'ModerationCog' = bot.get_cog('ModerationCog')
+        ticket_data = await modcog.data.Ticket.create(
+            guildid=guildid,
+            targetid=userid,
+            ticket_type=TicketType.WARNING,
+            ticket_state=TicketState.OPEN,
+            moderator_id=moderatorid,
+            content=content,
+            expiry=expiry,
+            created_at=utc_now().replace(tzinfo=None),
+            **kwargs
+        )
+
+        lguild = await bot.core.lions.fetch_guild(guildid)
+        new_ticket = cls(lguild, ticket_data)
+        await new_ticket.post()
+
+        if expiry:
+            cls.expiring.schedule_task(ticket_data.ticketid, expiry.timestamp())
+
+        return new_ticket
+
+    @classmethod
+    async def count_warnings_for(
+        cls, bot: LionBot, guildid: int, userid: int, **kwargs
+    ):
+        modcog: 'ModerationCog' = bot.get_cog('ModerationCog')
+        Ticket = modcog.data.Ticket
+        record = await Ticket.table.select_one_where(
+            (Ticket.ticket_state != TicketState.PARDONED),
+            guildid=guildid,
+            targetid=userid,
+            ticket_type=TicketType.WARNING,
+            **kwargs
+        ).select(ticket_count='COUNT(*)').with_no_adapter()
+        return (record[0]['ticket_count'] or 0) if record else 0
+
+
+