maubot/examples/database/databasebot.py

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from typing import Type
from sqlalchemy import Column, String, Text, Table, MetaData, orm, func
from mautrix.types import EventType
from maubot import Plugin, MessageEvent
from maubot.handlers import event, command
class DatabaseBot(Plugin):
db: orm.Session
events: Type[Table]
async def start(self) -> None:
await super().start()
db_factory = orm.sessionmaker(bind=self.database)
self.db = orm.scoped_session(db_factory)
table_meta = MetaData(bind=self.db)
self.events = Table("event", table_meta,
Column("room_id", String(255), primary_key=True),
Column("event_id", String(255), primary_key=True),
Column("sender", String(255)),
Column("body", Text))
# In the future, there will be a proper way to include Alembic upgrades in plugins.
table_meta.create_all()
@event.on(EventType.ROOM_MESSAGE)
async def handler(self, event: MessageEvent) -> None:
self.db.add(self.events(room_id=event.room_id, event_id=event.event_id,
sender=event.sender, body=event.content.body))
@command.new("stats")
async def find(self, _: MessageEvent) -> None:
res = (self.db
.query(func.sum(self.events.event_id))
.group_by(self.events.room_id, self.events.sender)
.all())
print(res)