first commit

database.py

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+from sqlalchemy import create_engine, Column, Integer, String, DateTime, Text, Boolean, ForeignKey
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker, relationship
+from datetime import datetime
+from config import settings
+
+Base = declarative_base()
+
+class Device(Base):
+    __tablename__ = "devices"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    device_id = Column(String(50), unique=True, index=True, nullable=False)
+    secret = Column(String(100), nullable=False)
+    name = Column(String(100), nullable=True)
+    scene = Column(String(100), nullable=True)
+    last_online = Column(DateTime, default=datetime.utcnow)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # 关联内容版本
+    contents = relationship("Content", back_populates="device")
+
+class Content(Base):
+    __tablename__ = "contents"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    device_id = Column(String(50), ForeignKey("devices.device_id"), nullable=False)
+    version = Column(Integer, nullable=False)
+    title = Column(String(200), nullable=True)
+    description = Column(Text, nullable=True)
+    image_path = Column(String(500), nullable=True)
+    layout_config = Column(Text, nullable=True)  # JSON格式的布局配置
+    timezone = Column(String(50), default="Asia/Shanghai")
+    time_format = Column(String(20), default="%Y-%m-%d %H:%M")
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    
+    # 关联设备
+    device = relationship("Device", back_populates="contents")
+
+# 创建数据库连接
+engine = create_engine(settings.database_url)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# 创建所有表
+def init_db():
+    Base.metadata.create_all(bind=engine)
+
+# 获取数据库会话
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()