"""每日心情叶模型"""

from datetime import datetime, date

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

from app.database import Base


class DailyMoodLeaf(Base):
    __tablename__ = "daily_mood_leaves"
    __table_args__ = (
        UniqueConstraint("user_id", "leaf_date", name="uq_user_daily_leaf"),
    )

    id: Mapped[str] = mapped_column(String(36), primary_key=True)
    user_id: Mapped[str] = mapped_column(String(36), ForeignKey("users.id", ondelete="CASCADE"))
    leaf_date: Mapped[date] = mapped_column(Date, nullable=False)
    mood: Mapped[str | None] = mapped_column(String(20), nullable=True)  # 预设心情标签
    note: Mapped[str | None] = mapped_column(Text, nullable=True)  # 心情备注
    leaf_seed: Mapped[str] = mapped_column(String(32), nullable=False)  # 确定性生成种子
    created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.utcnow())

    user = relationship("User", foreign_keys=[user_id])