初始化提交

backend/app/models/memory.py

@@ -0,0 +1,46 @@
+"""记忆模型。"""
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, Float, ForeignKey, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.core.ids import new_memory_id, new_memory_link_id
+from app.core.time import utc_now
+from app.db.base import Base
+
+
+class Memory(Base):
+    __tablename__ = "memories"
+
+    id: Mapped[str] = mapped_column(String(80), primary_key=True, default=new_memory_id)
+    character_id: Mapped[str] = mapped_column(String(80), ForeignKey("characters.id"), index=True)
+    type: Mapped[str] = mapped_column(String(60), nullable=False)
+    title: Mapped[str] = mapped_column(String(200), nullable=False)
+    content: Mapped[str] = mapped_column(Text, nullable=False)
+    source: Mapped[str] = mapped_column(String(80), nullable=False, default="user_explicit")
+    confidence: Mapped[float] = mapped_column(Float, nullable=False, default=1.0)
+    importance: Mapped[float] = mapped_column(Float, nullable=False, default=0.5)
+    sensitivity: Mapped[str] = mapped_column(String(40), nullable=False, default="low")
+    evidence_ids_json: Mapped[str] = mapped_column(Text, nullable=False, default="[]")
+    status: Mapped[str] = mapped_column(String(40), nullable=False, default="active", index=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utc_now)
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=utc_now, onupdate=utc_now
+    )
+    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    expires_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    temporal_context_json: Mapped[str] = mapped_column(
+        Text, nullable=False, default="{}", server_default="{}"
+    )
+
+
+class MemoryLink(Base):
+    __tablename__ = "memory_links"
+
+    id: Mapped[str] = mapped_column(String(80), primary_key=True, default=new_memory_link_id)
+    character_id: Mapped[str] = mapped_column(String(80), ForeignKey("characters.id"), index=True)
+    source_memory_id: Mapped[str] = mapped_column(String(80), ForeignKey("memories.id"), index=True)
+    target_memory_id: Mapped[str] = mapped_column(String(80), ForeignKey("memories.id"), index=True)
+    relation: Mapped[str] = mapped_column(String(80), nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utc_now)