59 lines
2.6 KiB
Python
59 lines
2.6 KiB
Python
from datetime import datetime, timezone
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from sqlalchemy import String, Text, Boolean, DateTime, ForeignKey, Integer, UniqueConstraint
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.database import Base
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def utcnow() -> datetime:
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return datetime.now(timezone.utc)
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class Contest(Base):
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__tablename__ = "contests"
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id: Mapped[int] = mapped_column(primary_key=True)
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title: Mapped[str] = mapped_column(String(255), nullable=False)
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description: Mapped[str | None] = mapped_column(Text, nullable=True)
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start_time: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
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end_time: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
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is_active: Mapped[bool] = mapped_column(Boolean, default=False)
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created_by: Mapped[int | None] = mapped_column(ForeignKey("users.id"), nullable=True)
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created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
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# Relationships
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creator = relationship("User", back_populates="created_contests")
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problems = relationship("Problem", back_populates="contest", cascade="all, delete-orphan")
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participants = relationship("ContestParticipant", back_populates="contest", cascade="all, delete-orphan")
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submissions = relationship("Submission", back_populates="contest", cascade="all, delete-orphan", passive_deletes=True)
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@property
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def is_running(self) -> bool:
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now = datetime.now(timezone.utc)
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start = self.start_time if self.start_time.tzinfo else self.start_time.replace(tzinfo=timezone.utc)
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end = self.end_time if self.end_time.tzinfo else self.end_time.replace(tzinfo=timezone.utc)
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return self.is_active and start <= now <= end
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@property
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def has_ended(self) -> bool:
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now = datetime.now(timezone.utc)
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end = self.end_time if self.end_time.tzinfo else self.end_time.replace(tzinfo=timezone.utc)
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return now > end
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class ContestParticipant(Base):
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__tablename__ = "contest_participants"
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id: Mapped[int] = mapped_column(primary_key=True)
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contest_id: Mapped[int] = mapped_column(ForeignKey("contests.id", ondelete="CASCADE"), nullable=False)
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user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
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joined_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
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# Relationships
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contest = relationship("Contest", back_populates="participants")
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user = relationship("User", back_populates="participations")
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__table_args__ = (
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UniqueConstraint("contest_id", "user_id", name="unique_contest_participant"),
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)
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