"""默契种子模型"""

from datetime import datetime

from sqlalchemy import String, Integer, DateTime, ForeignKey, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import Base


class SyncQuestion(Base):
    __tablename__ = "sync_questions"

    id: Mapped[str] = mapped_column(String(36), primary_key=True)
    content: Mapped[str] = mapped_column(String(200), nullable=False)
    active_date: Mapped[str | None] = mapped_column(String(10), nullable=True)  # YYYY-MM-DD
    created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.utcnow())


class SyncSeed(Base):
    """默契种子：两人对同一题的作答"""
    __tablename__ = "sync_seeds"
    __table_args__ = (
        UniqueConstraint("question_id", "user_a", "user_b", name="uq_sync_seed_pair"),
    )

    id: Mapped[str] = mapped_column(String(36), primary_key=True)
    question_id: Mapped[str] = mapped_column(String(36), ForeignKey("sync_questions.id", ondelete="CASCADE"))
    user_a: Mapped[str] = mapped_column(String(36), ForeignKey("users.id", ondelete="CASCADE"))
    user_b: Mapped[str] = mapped_column(String(36), ForeignKey("users.id", ondelete="CASCADE"))
    answer_a: Mapped[str | None] = mapped_column(String(500), nullable=True)
    answer_b: Mapped[str | None] = mapped_column(String(500), nullable=True)
    score: Mapped[int | None] = mapped_column(Integer, nullable=True)  # 0-100
    leaf_seed: Mapped[str | None] = mapped_column(String(16), nullable=True)  # 默契叶种子
    status: Mapped[str] = mapped_column(String(20), default="draft")  # draft/revealed
    created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.utcnow())
    revealed_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)