完成数据库设置表的增删改查

models/setting.py

@@ -71,15 +71,127 @@ class Setting(BaseModel, table=True):
         ),
     )
 
-async def add(
-    type: SETTINGS_TYPE,
-    name: str,
-    value: Optional[str] = None
-):
-    pass
+    async def add(
+        type: SETTINGS_TYPE = None,
+        name: str = None,
+        value: Optional[str] = None
+    ) -> None:
+        """
+        向数据库内添加设置项目。
+        
+        :param type: 设置类型/分组
+        :type type: SETTINGS_TYPE
+        :param name: 设置项名称
+        :type name: str
+        :param value: 设置值，默认为 None
+        :type value: Optional[str]
+        """
+        from .database import get_session
+        
+        if isinstance(value, (dict, list)):
+            value = str(value)
+        
+        async for session in get_session():
+            new_setting = Setting(type=type, name=name, value=value)
+            session.add(new_setting)
+        
+            await session.commit()
 
-async def get(
-    type: SETTINGS_TYPE,
-    name: str
-):
-    pass
+    async def get(
+        type: SETTINGS_TYPE,
+        name: str
+    ) -> Optional['Setting']:
+        """
+        从数据库中获取指定类型和名称的设置项。
+        
+        :param type: 设置类型/分组
+        :type type: SETTINGS_TYPE
+        :param name: 设置项名称
+        :type name: str
+        
+        :return: 返回设置项对象，如果不存在则返回 None
+        :rtype: Optional[Setting]
+        """
+        from .database import get_session
+        from sqlmodel import select
+        
+        async for session in get_session():
+            statment = select(Setting).where(
+                Setting.type == type, 
+                Setting.name == name
+            )
+            
+            result = await session.exec(statment)
+            return result.one_or_none()
+    
+    async def set(
+        type: SETTINGS_TYPE,
+        name: str,
+        value: Optional[str] = None
+    ) -> None:
+        """
+        更新指定类型和名称的设置项的值。
+        
+        :param type: 设置类型/分组
+        :type type: SETTINGS_TYPE
+        :param name: 设置项名称
+        :type name: str
+        :param value: 新的设置值，默认为 None
+        :type value: Optional[str]
+        
+        :raises ValueError: 如果设置项不存在，则抛出异常
+        """
+        from .database import get_session
+        from sqlmodel import select
+        
+        if isinstance(value, (dict, list)):
+            value = str(value)
+        
+        async for session in get_session():
+            statment = select(Setting).where(
+                Setting.type == type, 
+                Setting.name == name
+            )
+            
+            result = await session.exec(statment)
+            setting = result.one_or_none()
+            
+            if not setting:
+                raise ValueError(f"Setting {type}.{name} does not exist.")
+            
+            # 设置项存在，更新数据
+            setting.value = value
+            await session.commit()
+    
+    async def delete(
+        type: SETTINGS_TYPE,
+        name: str
+    ) -> None:
+        """
+        删除指定类型和名称的设置项。
+        
+        :param type: 设置类型/分组
+        :type type: SETTINGS_TYPE
+        :param name: 设置项名称
+        :type name: str
+        
+        :raises ValueError: 如果设置项不存在，则抛出异常
+        """
+        from .database import get_session
+        from sqlmodel import select, delete
+        
+        async for session in get_session():
+            statment = select(Setting).where(
+                Setting.type == type, 
+                Setting.name == name
+            )
+            
+            result = await session.exec(statment)
+            setting = result.one_or_none()
+            
+            if not setting:
+                raise ValueError(f"Setting {type}.{name} does not exist.")
+            
+            # 设置项存在，删除数据
+            await session.delete(setting)
+            await session.commit()