package service

import (
	"errors"
	"hospital-admin-api/api/dao"
	"hospital-admin-api/api/model"
	"hospital-admin-api/api/requests"
	"hospital-admin-api/api/responses/menuResponse"
	"hospital-admin-api/global"
)

type MenuService struct{}

// GetMenuList 获取菜单列表
func (r *MenuService) GetMenuList() ([]*menuResponse.GetMenuList, error) {
	// 获取全部菜单
	AdminMenuDao := dao.AdminMenuDao{}
	adminMenu, _ := AdminMenuDao.GetAdminMenuListSortOrderNum()
	if adminMenu == nil {
		return nil, nil
	}

	menuMap := make(map[int64]*menuResponse.GetMenuList)
	var menuTree []*menuResponse.GetMenuList

	for _, menu := range adminMenu {
		node := &menuResponse.GetMenuList{
			MenuId:     menu.MenuId,
			MenuName:   menu.MenuName,
			MenuTitle:  menu.MenuTitle,
			ParentId:   menu.ParentId,
			MenuStatus: menu.MenuStatus,
			MenuType:   menu.MenuType,
			Permission: menu.Permission,
			OrderNum:   menu.OrderNum,
			Icon:       menu.Icon,
			Path:       menu.Path,
			Component:  menu.Component,
			Children:   nil,
		}
		menuMap[menu.MenuId] = node
	}

	// 构建菜单树
	for _, menu := range adminMenu {
		if menu.ParentId == 0 {
			menuTree = append(menuTree, menuMap[menu.MenuId])
		} else if parent, ok := menuMap[menu.ParentId]; ok {
			parent.Children = append(parent.Children, menuMap[menu.MenuId])
		}
	}

	return menuTree, nil
}

// AddMenu 新增菜单
func (r *MenuService) AddMenu(AddMenuRequest requests.AddMenu) (bool, error) {
	AdminMenuDao := dao.AdminMenuDao{}
	AdminMenuApiDao := dao.AdminMenuApiDao{}
	AdminApiDao := dao.AdminApiDao{}

	// 判断父级id
	if AddMenuRequest.ParentId != 0 {
		adminMenu, _ := AdminMenuDao.GetAdminMenuById(AddMenuRequest.ParentId)
		if adminMenu == nil {
			return false, errors.New("上级菜单错误")
		}
	}

	// 开始事务
	tx := global.Db.Begin()
	defer func() {
		if r := recover(); r != nil {
			tx.Rollback()
		}
	}()

	// 新增菜单
	AdminMenuModel := &model.AdminMenu{
		MenuName:   AddMenuRequest.MenuName,
		MenuTitle:  AddMenuRequest.MenuTitle,
		ParentId:   AddMenuRequest.ParentId,
		MenuStatus: AddMenuRequest.MenuStatus,
		MenuType:   AddMenuRequest.MenuType,
		Permission: AddMenuRequest.Permission,
		OrderNum:   AddMenuRequest.OrderNum,
		Icon:       AddMenuRequest.Icon,
		Path:       AddMenuRequest.Path,
		Component:  AddMenuRequest.Component,
	}

	adminMenu, _ := AdminMenuDao.AddAdminMenu(tx, AdminMenuModel)
	if adminMenu == nil {
		tx.Rollback()
		return false, errors.New("新增失败")
	}

	// 新增菜单api
	if len(AddMenuRequest.ApiIds) > 0 {
		for _, v := range AddMenuRequest.ApiIds {
			// 检测api
			adminApi, _ := AdminApiDao.GetAdminApiById(v)
			if adminApi == nil {
				tx.Rollback()
				return false, errors.New("接口不存在")
			}

			AdminMenuApiModel := &model.AdminMenuApi{
				MenuId: adminMenu.MenuId,
				ApiId:  v,
			}

			adminMenuApi, _ := AdminMenuApiDao.AddAdminMenuApi(tx, AdminMenuApiModel)
			if adminMenuApi == nil {
				tx.Rollback()
				return false, errors.New("新增失败")
			}
		}
	}

	tx.Commit()

	return true, nil
}

// PutMenu 修改菜单
func (r *MenuService) PutMenu(PutMenuRequest requests.PutMenu) (bool, error) {
	AdminMenuDao := dao.AdminMenuDao{}
	AdminMenuApiDao := dao.AdminMenuApiDao{}
	AdminApiDao := dao.AdminApiDao{}

	// 判断父级id
	if PutMenuRequest.ParentId != 0 {
		adminMenu, _ := AdminMenuDao.GetAdminMenuById(PutMenuRequest.ParentId)
		if adminMenu == nil {
			return false, errors.New("上级菜单错误")
		}
	}

	// 开始事务
	tx := global.Db.Begin()
	defer func() {
		if r := recover(); r != nil {
			tx.Rollback()
		}
	}()

	// 新增菜单
	AdminMenuModel := &model.AdminMenu{
		MenuName:   PutMenuRequest.MenuName,
		MenuTitle:  PutMenuRequest.MenuTitle,
		ParentId:   PutMenuRequest.ParentId,
		MenuStatus: PutMenuRequest.MenuStatus,
		MenuType:   PutMenuRequest.MenuType,
		Permission: PutMenuRequest.Permission,
		OrderNum:   PutMenuRequest.OrderNum,
		Icon:       PutMenuRequest.Icon,
		Path:       PutMenuRequest.Path,
		Component:  PutMenuRequest.Component,
	}

	adminMenu, _ := AdminMenuDao.AddAdminMenu(tx, AdminMenuModel)
	if adminMenu == nil {
		tx.Rollback()
		return false, errors.New("新增失败")
	}

	// 新增菜单api
	if len(PutMenuRequest.ApiIds) > 0 {
		for _, v := range PutMenuRequest.ApiIds {
			// 检测api
			adminApi, _ := AdminApiDao.GetAdminApiById(v)
			if adminApi == nil {
				tx.Rollback()
				return false, errors.New("接口不存在")
			}

			AdminMenuApiModel := &model.AdminMenuApi{
				MenuId: adminMenu.MenuId,
				ApiId:  v,
			}

			adminMenuApi, _ := AdminMenuApiDao.AddAdminMenuApi(tx, AdminMenuApiModel)
			if adminMenuApi == nil {
				tx.Rollback()
				return false, errors.New("新增失败")
			}
		}
	}

	tx.Commit()

	return true, nil
}