matrix-puppeteer-line/matrix_puppeteer_line/db/receipt.py

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# matrix-puppeteer-line - A very hacky Matrix-LINE bridge based on running LINE's Chrome extension in Puppeteer
2022-03-28 15:00:36 -04:00
# Copyright (C) 2020-2022 Tulir Asokan, Andrew Ferrazzutti
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from typing import List, ClassVar, Dict, Optional, TYPE_CHECKING
from attr import dataclass
from mautrix.util.async_db import Database
fake_db = Database("") if TYPE_CHECKING else None
@dataclass
class Receipt:
db: ClassVar[Database] = fake_db
mid: int
chat_id: str
num_read: int
async def insert_or_update(self) -> None:
q = ("INSERT INTO receipt (mid, chat_id, num_read) "
"VALUES ($1, $2, $3) "
"ON CONFLICT (chat_id, num_read) "
"DO UPDATE SET mid=EXCLUDED.mid, num_read=EXCLUDED.num_read")
await self.db.execute(q, self.mid, self.chat_id, self.num_read)
# Delete lower counts for earlier messages
# TODO Consider using a CHECK for this instead
q = ("DELETE FROM receipt "
"WHERE chat_id=$1 AND mid<$2 AND num_read<$3")
await self.db.execute(q, self.chat_id, self.mid, self.num_read)
@classmethod
async def get_max_mid(cls, chat_id: str, num_read: int) -> Optional[int]:
q = ("SELECT mid FROM receipt "
"WHERE chat_id=$1 AND num_read=$2")
return await cls.db.fetchval(q, chat_id, num_read)
@classmethod
async def get_max_mid_per_num_read(cls, chat_id: str) -> Dict[int, int]:
rows = await cls.db.fetch("SELECT chat_id, mid, num_read FROM receipt WHERE chat_id=$1", chat_id)
data = {}
for row in rows:
data[row["num_read"]] = row["mid"]
return data
@classmethod
async def get_max_mids_per_num_read(cls) -> Dict[str, Dict[int, int]]:
rows = await cls.db.fetch("SELECT chat_id, mid, num_read FROM receipt")
data = {}
for row in rows:
chat_id = row["chat_id"]
if chat_id not in data:
inner_data = {}
data[chat_id] = inner_data
else:
inner_data = data[chat_id]
inner_data[row["num_read"]] = row["mid"]
return data