1.6

backend/app/models/daily_leaf.py

@@ -0,0 +1,25 @@
+"""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])