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app/models/card_key.py

@@ -0,0 +1,25 @@
+from datetime import datetime
+
+from sqlalchemy import DateTime, ForeignKey, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class CardKey(Base):
+    __tablename__ = "card_keys"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    serial_number: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    duration_days: Mapped[int] = mapped_column(Integer)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now()
+    )
+    activated_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), nullable=True, default=None
+    )
+    user_id: Mapped[int | None] = mapped_column(
+        Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True
+    )
+    username: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    remark: Mapped[str | None] = mapped_column(String(255), nullable=True)