Add Cloudron packaging for Maubot

maubot-src/maubot/db/instance.py

@@ -0,0 +1,101 @@
+# maubot - A plugin-based Matrix bot system.
+# Copyright (C) 2022 Tulir Asokan
+#
+# 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 __future__ import annotations
+
+from typing import TYPE_CHECKING, ClassVar
+from enum import Enum
+
+from asyncpg import Record
+from attr import dataclass
+
+from mautrix.types import UserID
+from mautrix.util.async_db import Database
+
+fake_db = Database.create("") if TYPE_CHECKING else None
+
+
+class DatabaseEngine(Enum):
+    SQLITE = "sqlite"
+    POSTGRES = "postgres"
+
+
+@dataclass
+class Instance:
+    db: ClassVar[Database] = fake_db
+
+    id: str
+    type: str
+    enabled: bool
+    primary_user: UserID
+    config_str: str
+    database_engine: DatabaseEngine | None
+
+    @property
+    def database_engine_str(self) -> str | None:
+        return self.database_engine.value if self.database_engine else None
+
+    @classmethod
+    def _from_row(cls, row: Record | None) -> Instance | None:
+        if row is None:
+            return None
+        data = {**row}
+        db_engine = data.pop("database_engine", None)
+        return cls(**data, database_engine=DatabaseEngine(db_engine) if db_engine else None)
+
+    _columns = "id, type, enabled, primary_user, config, database_engine"
+
+    @classmethod
+    async def all(cls) -> list[Instance]:
+        q = f"SELECT {cls._columns} FROM instance"
+        rows = await cls.db.fetch(q)
+        return [cls._from_row(row) for row in rows]
+
+    @classmethod
+    async def get(cls, id: str) -> Instance | None:
+        q = f"SELECT {cls._columns} FROM instance WHERE id=$1"
+        return cls._from_row(await cls.db.fetchrow(q, id))
+
+    async def update_id(self, new_id: str) -> None:
+        await self.db.execute("UPDATE instance SET id=$1 WHERE id=$2", new_id, self.id)
+        self.id = new_id
+
+    @property
+    def _values(self):
+        return (
+            self.id,
+            self.type,
+            self.enabled,
+            self.primary_user,
+            self.config_str,
+            self.database_engine_str,
+        )
+
+    async def insert(self) -> None:
+        q = (
+            "INSERT INTO instance (id, type, enabled, primary_user, config, database_engine) "
+            "VALUES ($1, $2, $3, $4, $5, $6)"
+        )
+        await self.db.execute(q, *self._values)
+
+    async def update(self) -> None:
+        q = """
+        UPDATE instance SET type=$2, enabled=$3, primary_user=$4, config=$5, database_engine=$6
+        WHERE id=$1
+        """
+        await self.db.execute(q, *self._values)
+
+    async def delete(self) -> None:
+        await self.db.execute("DELETE FROM instance WHERE id=$1", self.id)