Tulir Asokan
82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
# mautrix-telegram - A Matrix-Telegram puppeting bridge
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# Copyright (C) 2019 Tulir Asokan
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from typing import Optional, cast, Dict, Any, TYPE_CHECKING
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from sqlalchemy import (Column, ForeignKey, Integer, BigInteger, String, Boolean, Text,
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TypeDecorator)
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from mautrix.types import ContentURI, EncryptedFile
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from mautrix.util.db import Base
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if TYPE_CHECKING:
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from sqlalchemy.engine.result import RowProxy
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class DBEncryptedFile(TypeDecorator):
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impl = Text
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@property
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def python_type(self):
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return EncryptedFile
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def process_bind_param(self, value: EncryptedFile, dialect) -> Optional[str]:
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if value is not None:
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return value.json()
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return None
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def process_result_value(self, value: str, dialect) -> Optional[EncryptedFile]:
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if value is not None:
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return EncryptedFile.parse_json(value)
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return None
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def process_literal_param(self, value, dialect):
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return value
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class TelegramFile(Base):
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__tablename__ = "telegram_file"
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id: str = Column(String, primary_key=True)
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mxc: ContentURI = Column(String)
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mime_type: str = Column(String)
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was_converted: bool = Column(Boolean)
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timestamp: int = Column(BigInteger)
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size: Optional[int] = Column(Integer, nullable=True)
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width: Optional[int] = Column(Integer, nullable=True)
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height: Optional[int] = Column(Integer, nullable=True)
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decryption_info: Optional[Dict[str, Any]] = Column(DBEncryptedFile, nullable=True)
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thumbnail_id: str = Column("thumbnail", String, ForeignKey("telegram_file.id"), nullable=True)
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thumbnail: Optional['TelegramFile'] = None
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@classmethod
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def scan(cls, row: 'RowProxy') -> 'TelegramFile':
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telegram_file = cast(TelegramFile, super().scan(row))
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if isinstance(telegram_file.thumbnail, str):
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telegram_file.thumbnail = cls.get(telegram_file.thumbnail)
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return telegram_file
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@classmethod
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def get(cls, loc_id: str) -> Optional['TelegramFile']:
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return cls._select_one_or_none(cls.c.id == loc_id)
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def insert(self) -> None:
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with self.db.begin() as conn:
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conn.execute(self.t.insert().values(
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id=self.id, mxc=self.mxc, mime_type=self.mime_type,
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was_converted=self.was_converted, timestamp=self.timestamp, size=self.size,
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width=self.width, height=self.height, decryption_info=self.decryption_info,
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thumbnail=self.thumbnail.id if self.thumbnail else self.thumbnail_id))
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