初始化

backend/models.py

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+"""SQLAlchemy 数据模型"""
+from datetime import datetime
+from sqlalchemy import (
+    create_engine, Column, Integer, String, Text, DateTime, LargeBinary,
+    Enum as SAEnum, ForeignKey, Table
+)
+from sqlalchemy.orm import declarative_base, relationship, sessionmaker
+from config import get_db_url
+
+engine = create_engine(get_db_url(), echo=False, pool_pre_ping=True)
+SessionLocal = sessionmaker(bind=engine, autocommit=False)
+Base = declarative_base()
+
+
+def get_db():
+    """获取数据库会话（FastAPI 依赖注入）"""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+
+# ===== 文件夹 =====
+class Folder(Base):
+    """文件夹表 — 笔记和网站共用"""
+    __tablename__ = "folders"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(100), nullable=False)
+    type = Column(SAEnum("note", "website", name="folder_type"), nullable=False, default="note")
+    parent_id = Column(Integer, ForeignKey("folders.id"), nullable=True)
+    sort_order = Column(Integer, default=0)
+    created_by = Column(String(100), nullable=False, default="admin")
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    children = relationship("Folder", backref="parent", remote_side=[id])
+    notes = relationship("Note", back_populates="folder", cascade="all, delete-orphan")
+    websites = relationship("Website", back_populates="folder", cascade="all, delete-orphan")
+
+
+# ===== 笔记 =====
+class Note(Base):
+    """笔记表"""
+    __tablename__ = "notes"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    title = Column(String(500), nullable=False, default="无标题")
+    content = Column(Text, nullable=True)  # Tiptap 输出的 HTML
+    folder_id = Column(Integer, ForeignKey("folders.id"), nullable=True)
+    created_by = Column(String(100), nullable=False, default="admin")
+    updated_by = Column(String(100), nullable=False, default="admin")
+    share_token = Column(String(64), nullable=True, unique=True)
+    share_expires_at = Column(DateTime, nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    folder = relationship("Folder", back_populates="notes")
+    tags = relationship("Tag", secondary="note_tags", back_populates="notes")
+
+
+# ===== 笔记-标签关联 =====
+note_tags = Table(
+    "note_tags",
+    Base.metadata,
+    Column("note_id", Integer, ForeignKey("notes.id", ondelete="CASCADE"), primary_key=True),
+    Column("tag_id", Integer, ForeignKey("tags.id", ondelete="CASCADE"), primary_key=True),
+)
+
+
+# ===== 标签 =====
+class Tag(Base):
+    """标签表"""
+    __tablename__ = "tags"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(50), nullable=False, unique=True)
+    color = Column(String(20), default="#666666")
+
+    notes = relationship("Note", secondary="note_tags", back_populates="tags")
+
+
+# ===== 网站 =====
+class Website(Base):
+    """网站表"""
+    __tablename__ = "websites"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(200), nullable=False)
+    url = Column(String(500), nullable=False)
+    folder_id = Column(Integer, ForeignKey("folders.id"), nullable=True)
+    created_by = Column(String(100), nullable=False, default="admin")
+    updated_by = Column(String(100), nullable=False, default="admin")
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    folder = relationship("Folder", back_populates="websites")
+    accounts = relationship("Account", back_populates="website", cascade="all, delete-orphan",
+                            order_by="Account.sort_order")
+
+
+# ===== 账号 =====
+class Account(Base):
+    """账号表 — 存储网站登录凭据"""
+    __tablename__ = "accounts"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    website_id = Column(Integer, ForeignKey("websites.id", ondelete="CASCADE"), nullable=False)
+    username = Column(String(500), nullable=False)
+    password = Column(String(500), nullable=False)  # 明文存储，后续加密
+    remark = Column(Text, nullable=True)
+    created_by = Column(String(100), nullable=False, default="admin")
+    updated_by = Column(String(100), nullable=False, default="admin")
+    sort_order = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    website = relationship("Website", back_populates="accounts")
+
+
+# ===== 上传文件 =====
+class Upload(Base):
+    """文件上传表 — 图片存储（新文件存文件服务，旧文件兼容 DB blob）"""
+    __tablename__ = "uploads"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    filename = Column(String(255), nullable=False)
+    content_type = Column(String(100), nullable=False)
+    data = Column(LargeBinary(length=2**32-1), nullable=True)    # 旧图片 LONGBLOB（兼容），新文件为 NULL
+    file_id = Column(String(64), nullable=True)                   # 文件服务返回的 fileId（新文件）
+    size = Column(Integer, default=0)
+    created_by = Column(String(100), nullable=False, default="admin")
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+