move signal bot to its own DB

python/orm/signal_bot/base.py

@@ -0,0 +1,52 @@
+"""Signal bot database ORM base."""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, MetaData, SmallInteger, func
+from sqlalchemy.ext.declarative import AbstractConcreteBase
+from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
+
+from python.orm.common import NAMING_CONVENTION
+
+
+class SignalBotBase(DeclarativeBase):
+    """Base class for signal_bot database ORM models."""
+
+    schema_name = "main"
+
+    metadata = MetaData(
+        schema=schema_name,
+        naming_convention=NAMING_CONVENTION,
+    )
+
+
+class _TableMixin:
+    """Shared timestamp columns for all table bases."""
+
+    created: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        server_default=func.now(),
+    )
+    updated: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        server_default=func.now(),
+        onupdate=func.now(),
+    )
+
+
+class SignalBotTableBaseSmall(_TableMixin, AbstractConcreteBase, SignalBotBase):
+    """Table with SmallInteger primary key."""
+
+    __abstract__ = True
+
+    id: Mapped[int] = mapped_column(SmallInteger, primary_key=True)
+
+
+class SignalBotTableBase(_TableMixin, AbstractConcreteBase, SignalBotBase):
+    """Table with Integer primary key."""
+
+    __abstract__ = True
+
+    id: Mapped[int] = mapped_column(primary_key=True)