from datetime import datetime
from enum import Enum
from sqlalchemy import String, Text, DateTime, ForeignKey, Integer
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.database import Base


class MarathonStatus(str, Enum):
    PREPARING = "preparing"
    ACTIVE = "active"
    FINISHED = "finished"


class Marathon(Base):
    __tablename__ = "marathons"

    id: Mapped[int] = mapped_column(primary_key=True)
    title: Mapped[str] = mapped_column(String(100), nullable=False)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    organizer_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
    status: Mapped[str] = mapped_column(String(20), default=MarathonStatus.PREPARING.value)
    invite_code: Mapped[str] = mapped_column(String(20), unique=True, nullable=False, index=True)
    start_date: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    end_date: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)

    # Relationships
    organizer: Mapped["User"] = relationship(
        "User",
        back_populates="organized_marathons",
        foreign_keys=[organizer_id]
    )
    participants: Mapped[list["Participant"]] = relationship(
        "Participant",
        back_populates="marathon",
        cascade="all, delete-orphan"
    )
    games: Mapped[list["Game"]] = relationship(
        "Game",
        back_populates="marathon",
        cascade="all, delete-orphan"
    )
    activities: Mapped[list["Activity"]] = relationship(
        "Activity",
        back_populates="marathon",
        cascade="all, delete-orphan"
    )