Add Cloudron packaging for Maubot

maubot-src/maubot/standalone/database.py

@@ -0,0 +1,73 @@
+# 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
+
+import logging
+
+from attr import dataclass
+
+from mautrix.client import SyncStore
+from mautrix.types import FilterID, SyncToken, UserID
+from mautrix.util.async_db import Connection, Database, UpgradeTable
+
+upgrade_table = UpgradeTable(
+    version_table_name="standalone_version", log=logging.getLogger("maubot.db")
+)
+
+
+@upgrade_table.register(description="Initial revision")
+async def upgrade_v1(conn: Connection) -> None:
+    await conn.execute(
+        """CREATE TABLE IF NOT EXISTS standalone_next_batch (
+            user_id    TEXT PRIMARY KEY,
+            next_batch TEXT,
+            filter_id  TEXT
+        )"""
+    )
+
+
+find_q = "SELECT next_batch, filter_id FROM standalone_next_batch WHERE user_id=$1"
+insert_q = "INSERT INTO standalone_next_batch (user_id, next_batch, filter_id) VALUES ($1, $2, $3)"
+update_nb_q = "UPDATE standalone_next_batch SET next_batch=$1 WHERE user_id=$2"
+update_filter_q = "UPDATE standalone_next_batch SET filter_id=$1 WHERE user_id=$2"
+
+
+@dataclass
+class NextBatch(SyncStore):
+    db: Database
+    user_id: UserID
+    next_batch: SyncToken = ""
+    filter_id: FilterID = ""
+
+    async def load(self) -> NextBatch:
+        row = await self.db.fetchrow(find_q, self.user_id)
+        if row is not None:
+            self.next_batch = row["next_batch"]
+            self.filter_id = row["filter_id"]
+        else:
+            await self.db.execute(insert_q, self.user_id, self.next_batch, self.filter_id)
+        return self
+
+    async def put_filter_id(self, filter_id: FilterID) -> None:
+        self.filter_id = filter_id
+        await self.db.execute(update_filter_q, self.filter_id, self.user_id)
+
+    async def put_next_batch(self, next_batch: SyncToken) -> None:
+        self.next_batch = next_batch
+        await self.db.execute(update_nb_q, self.next_batch, self.user_id)
+
+    async def get_next_batch(self) -> SyncToken:
+        return self.next_batch