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# -*- coding: utf-8 -*-
from app.core.base_schema import BatchSetAvailable
from app.core.exceptions import CustomException
from app.utils.common_util import (
get_parent_id_map,
get_parent_recursion,
get_child_id_map,
get_child_recursion,
traversal_to_tree
)
from ..auth.schema import AuthSchema
from .crud import MenuCRUD
from .schema import (
MenuCreateSchema,
MenuUpdateSchema,
MenuOutSchema,
MenuQueryParam
)
class MenuService:
"""
菜单模块服务层
"""
@classmethod
async def get_menu_detail_service(cls, auth: AuthSchema, id: int) -> dict:
"""
获取菜单详情。
参数:
- auth (AuthSchema): 认证对象。
- id (int): 菜单ID。
返回:
- dict: 菜单详情对象。
"""
menu = await MenuCRUD(auth).get_by_id_crud(id=id)
# 创建实例后再设置parent_name属性
menu_out = MenuOutSchema.model_validate(menu)
if menu and menu.parent_id:
parent = await MenuCRUD(auth).get_by_id_crud(id=menu.parent_id)
if parent:
menu_out.parent_name = parent.name
return menu_out.model_dump()
@classmethod
async def get_menu_tree_service(cls, auth: AuthSchema, search: MenuQueryParam | None = None, order_by: list[dict] | None = None) -> list[dict]:
"""
获取菜单树形列表。
参数:
- auth (AuthSchema): 认证对象。
- search (MenuQueryParam | None): 查询参数对象。
- order_by (list[dict] | None): 排序参数列表。
返回:
- list[dict]: 菜单树形列表对象。
"""
# 使用树形结构查询预加载children关系
menu_list = await MenuCRUD(auth).get_tree_list_crud(search=search.__dict__, order_by=order_by)
# 转换为字典列表
menu_dict_list = [MenuOutSchema.model_validate(menu).model_dump() for menu in menu_list]
# 使用traversal_to_tree构建树形结构
return traversal_to_tree(menu_dict_list)
@classmethod
async def create_menu_service(cls, auth: AuthSchema, data: MenuCreateSchema) -> dict:
"""
创建菜单。
参数:
- auth (AuthSchema): 认证对象。
- data (MenuCreateSchema): 创建参数对象。
返回:
- dict: 创建的菜单对象。
"""
menu = await MenuCRUD(auth).get(name=data.name)
if menu:
raise CustomException(msg='创建失败,该菜单已存在')
new_menu = await MenuCRUD(auth).create(data=data)
new_menu_dict = MenuOutSchema.model_validate(new_menu).model_dump()
return new_menu_dict
@classmethod
async def update_menu_service(cls, auth: AuthSchema,id:int, data: MenuUpdateSchema) -> dict:
"""
更新菜单。
参数:
- auth (AuthSchema): 认证对象。
- id (int): 菜单ID。
- data (MenuUpdateSchema): 更新参数对象。
返回:
- dict: 更新的菜单对象。
"""
menu = await MenuCRUD(auth).get_by_id_crud(id=id)
if not menu:
raise CustomException(msg='更新失败,该菜单不存在')
exist_menu = await MenuCRUD(auth).get(name=data.name)
if exist_menu and exist_menu.id != id:
raise CustomException(msg='更新失败,菜单名称重复')
if data.parent_id:
parent_menu = await MenuCRUD(auth).get_by_id_crud(id=data.parent_id)
if not parent_menu:
raise CustomException(msg='更新失败,父级菜单不存在')
data.parent_name = parent_menu.name
new_menu = await MenuCRUD(auth).update(id=id, data=data)
await cls.set_menu_available_service(auth=auth, data=BatchSetAvailable(ids=[id], status=data.status))
new_menu_dict = MenuOutSchema.model_validate(new_menu).model_dump()
return new_menu_dict
@classmethod
async def delete_menu_service(cls, auth: AuthSchema, ids: list[int]) -> None:
"""
删除菜单。
参数:
- auth (AuthSchema): 认证对象。
- ids (list[int]): 菜单ID列表。
返回:
- None
"""
if len(ids) < 1:
raise CustomException(msg='删除失败,删除对象不能为空')
for id in ids:
menu = await MenuCRUD(auth).get_by_id_crud(id=id)
if not menu:
raise CustomException(msg='删除失败,该菜单不存在')
# 校验是否存在子级菜单,存在则禁止删除
menu_list = await MenuCRUD(auth).get_list_crud()
id_map = get_child_id_map(model_list=menu_list)
for id in ids:
descendants = get_child_recursion(id=id, id_map=id_map)
if len(descendants) > 1:
raise CustomException(msg='删除失败,存在子级菜单,请先删除子级菜单')
await MenuCRUD(auth).delete(ids=ids)
@classmethod
async def set_menu_available_service(cls, auth: AuthSchema, data: BatchSetAvailable) -> None:
"""
递归获取所有父、子级菜单,然后批量修改菜单可用状态。
参数:
- auth (AuthSchema): 认证对象。
- data (BatchSetAvailable): 批量设置可用参数对象。
返回:
- None
"""
menu_list = await MenuCRUD(auth).get_list_crud()
total_ids = []
if data.status:
# 激活,则需要把所有父级菜单都激活
id_map = get_parent_id_map(model_list=menu_list)
for menu_id in data.ids:
enable_ids = get_parent_recursion(id=menu_id, id_map=id_map)
total_ids.extend(enable_ids)
else:
# 禁止,则需要把所有子级菜单都禁止
id_map = get_child_id_map(model_list=menu_list)
for menu_id in data.ids:
disable_ids = get_child_recursion(id=menu_id, id_map=id_map)
total_ids.extend(disable_ids)
await MenuCRUD(auth).set_available_crud(ids=total_ids, status=data.status)