Initial release

backend/app/models/winner.py

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+import uuid
+from datetime import datetime
+from typing import TYPE_CHECKING
+
+from sqlalchemy import BigInteger, DateTime, ForeignKey, String
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from .base import Base
+
+if TYPE_CHECKING:
+    from .lottery import Lottery
+    from .user import User
+    from .prize import Prize
+
+
+class Winner(Base):
+    __tablename__ = "winners"
+    __table_args__ = ()
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    lottery_id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), ForeignKey("lotteries.id", ondelete="CASCADE")
+    )
+    user_id: Mapped[int] = mapped_column(BigInteger, ForeignKey("users.id"))
+    prize_id: Mapped[uuid.UUID | None] = mapped_column(
+        UUID(as_uuid=True), ForeignKey("prizes.id", ondelete="SET NULL"), nullable=True
+    )
+    prize_name: Mapped[str] = mapped_column(String(255))  # snapshot at draw time
+    drawn_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+
+    lottery: Mapped["Lottery"] = relationship("Lottery", back_populates="winners")
+    user: Mapped["User"] = relationship("User")
+    prize: Mapped["Prize | None"] = relationship("Prize")