feat: introduced plans pricing

db/models/__init__.py

@@ -1,5 +1,6 @@
+from .addons import Addon
 from .pricing import PricingConfig
 from .sessions import Session
 from .users import User
 
-__all__ = ["PricingConfig", "Session", "User"]
+__all__ = ["Addon", "PricingConfig", "Session", "User"]

db/models/addons.py

@@ -0,0 +1,13 @@
+from sqlalchemy import FLOAT, INTEGER, TEXT
+from sqlalchemy.orm import Mapped, mapped_column
+
+from db.base import Base
+
+
+class Addon(Base):
+    __tablename__ = "addons"
+
+    id: Mapped[str] = mapped_column(TEXT, nullable=False, unique=True, primary_key=True)
+    name: Mapped[str] = mapped_column(TEXT, nullable=False, unique=False)
+    price: Mapped[float] = mapped_column(FLOAT, nullable=False)
+    free_threshold: Mapped[int] = mapped_column(INTEGER, default=-1)

db/models/pricing.py

@@ -9,11 +9,13 @@ from db.base import Base
 class PricingConfig(Base):
     __tablename__ = "pricing_configs"
 
-    __table_args__ = (
-        CheckConstraint("id = 1", name="single_row_check"),
-    )
+    __table_args__ = (CheckConstraint("id = 1", name="single_row_check"),)
 
-    id: Mapped[int] = mapped_column(INTEGER, autoincrement=True, unique=True, nullable=False, primary_key=True)
+    id: Mapped[int] = mapped_column(
+        INTEGER, autoincrement=True, unique=True, nullable=False, primary_key=True
+    )
     device_price: Mapped[float] = mapped_column(FLOAT, nullable=False)
 
-    updated_at: Mapped[datetime] = mapped_column(TIMESTAMP, server_default=func.now(), onupdate=func.now())
+    updated_at: Mapped[datetime] = mapped_column(
+        TIMESTAMP, server_default=func.now(), onupdate=func.now()
+    )