package system

import (
	"errors"
	"server/dao/system"

	"gorm.io/gorm"
	"server/model/common/request"
)

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getMenuTreeMap
//@description: 获取路由总树map
//@param: authorityId string
//@return: treeMap map[string][]system.SysMenu, err error

type MenuService struct{}

var MenuServiceApp = new(MenuService)

func (menuService *MenuService) getMenuTreeMap(authorityId uint) (treeMap map[uint][]system.SysMenu, err error) {
	var allMenus []system.SysMenu
	treeMap = make(map[uint][]system.SysMenu)

	SysAuthorityMenus, err := system.QueryAuthorityMenuByAuthorityId(authorityId)
	if err != nil {
		return
	}

	var MenuIds []string

	for i := range SysAuthorityMenus {
		MenuIds = append(MenuIds, SysAuthorityMenus[i].MenuId)
	}

	baseMenu, err := system.QueryBaseMenuAndParametersByMenuId(MenuIds)
	if err != nil {
		return
	}

	for i := range baseMenu {
		allMenus = append(allMenus, system.SysMenu{
			SysBaseMenu: baseMenu[i],
			AuthorityId: authorityId,
			MenuId:      baseMenu[i].ID,
			Parameters:  baseMenu[i].Parameters,
		})
	}

	btns, err := system.QueryAuthorityBtnAndSysBaseMenuBtnById(authorityId)

	if err != nil {
		return
	}
	var btnMap = make(map[uint]map[string]uint)
	for _, v := range btns {
		if btnMap[v.SysMenuID] == nil {
			btnMap[v.SysMenuID] = make(map[string]uint)
		}
		btnMap[v.SysMenuID][v.SysBaseMenuBtn.Name] = authorityId
	}
	for _, v := range allMenus {
		v.Btns = btnMap[v.SysBaseMenu.ID]
		treeMap[v.ParentId] = append(treeMap[v.ParentId], v)
	}
	return treeMap, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetMenuTree
//@description: 获取动态菜单树
//@param: authorityId string
//@return: menus []system.SysMenu, err error

func (menuService *MenuService) GetMenuTree(authorityId uint) (menus []system.SysMenu, err error) {
	menuTree, err := menuService.getMenuTreeMap(authorityId)
	menus = menuTree[0]
	for i := 0; i < len(menus); i++ {
		err = menuService.getChildrenList(&menus[i], menuTree)
	}
	return menus, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getChildrenList
//@description: 获取子菜单
//@param: menu *model.SysMenu, treeMap map[string][]model.SysMenu
//@return: err error

func (menuService *MenuService) getChildrenList(menu *system.SysMenu, treeMap map[uint][]system.SysMenu) (err error) {
	menu.Children = treeMap[menu.MenuId]
	for i := 0; i < len(menu.Children); i++ {
		err = menuService.getChildrenList(&menu.Children[i], treeMap)
	}
	return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetInfoList
//@description: 获取路由分页
//@return: list interface{}, total int64,err error

func (menuService *MenuService) GetInfoList() (list interface{}, total int64, err error) {
	var menuList []system.SysBaseMenu
	treeMap, err := menuService.getBaseMenuTreeMap()
	menuList = treeMap[0]
	for i := 0; i < len(menuList); i++ {
		err = menuService.getBaseChildrenList(&menuList[i], treeMap)
	}
	return menuList, total, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getBaseChildrenList
//@description: 获取菜单的子菜单
//@param: menu *model.SysBaseMenu, treeMap map[string][]model.SysBaseMenu
//@return: err error

func (menuService *MenuService) getBaseChildrenList(menu *system.SysBaseMenu, treeMap map[uint][]system.SysBaseMenu) (err error) {
	menu.Children = treeMap[menu.ID]
	for i := 0; i < len(menu.Children); i++ {
		err = menuService.getBaseChildrenList(&menu.Children[i], treeMap)
	}
	return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: AddBaseMenu
//@description: 添加基础路由
//@param: menu model.SysBaseMenu
//@return: error

func (menuService *MenuService) AddBaseMenu(menu system.SysBaseMenu) error {
	_, err := system.QueryBaseMenuByName(menu.Name)
	if !errors.Is(err, gorm.ErrRecordNotFound) {
		return errors.New("存在重复name，请修改name")
	}
	return menu.CreateBaseMenu()
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: getBaseMenuTreeMap
//@description: 获取路由总树map
//@return: treeMap map[string][]system.SysBaseMenu, err error

func (menuService *MenuService) getBaseMenuTreeMap() (treeMap map[uint][]system.SysBaseMenu, err error) {
	treeMap = make(map[uint][]system.SysBaseMenu)
	allMenus, err := system.QueryBaseMenuAndMenuBtnAndParameters()
	for _, v := range allMenus {
		treeMap[v.ParentId] = append(treeMap[v.ParentId], v)
	}
	return treeMap, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetBaseMenuTree
//@description: 获取基础路由树
//@return: menus []system.SysBaseMenu, err error

func (menuService *MenuService) GetBaseMenuTree() (menus []system.SysBaseMenu, err error) {
	treeMap, err := menuService.getBaseMenuTreeMap()
	menus = treeMap[0]
	for i := 0; i < len(menus); i++ {
		err = menuService.getBaseChildrenList(&menus[i], treeMap)
	}
	return menus, err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: AddMenuAuthority
//@description: 为角色增加menu树
//@param: menus []model.SysBaseMenu, authorityId string
//@return: err error

func (menuService *MenuService) AddMenuAuthority(menus []system.SysBaseMenu, authorityId uint) (err error) {
	var auth system.SysAuthority
	auth.AuthorityId = authorityId
	auth.SysBaseMenus = menus
	err = AuthorityServiceApp.SetMenuAuthority(&auth)
	return err
}

//@author: [piexlmax](https://github.com/piexlmax)
//@function: GetMenuAuthority
//@description: 查看当前角色树
//@param: info *request.GetAuthorityId
//@return: menus []system.SysMenu, err error

func (menuService *MenuService) GetMenuAuthority(info *request.GetAuthorityId) (menus []system.SysMenu, err error) {
	SysAuthorityMenus, err := system.QueryAuthorityMenuByAuthorityId(info.AuthorityId)
	if err != nil {
		return
	}

	var MenuIds []string

	for i := range SysAuthorityMenus {
		MenuIds = append(MenuIds, SysAuthorityMenus[i].MenuId)
	}

	baseMenu, err := system.QueryBaseMenuAndParametersByMenuId(MenuIds)

	for i := range baseMenu {
		menus = append(menus, system.SysMenu{
			SysBaseMenu: baseMenu[i],
			AuthorityId: info.AuthorityId,
			MenuId:      baseMenu[i].ID,
			Parameters:  baseMenu[i].Parameters,
		})
	}
	return menus, err
}

// UserAuthorityDefaultRouter 用户角色默认路由检查
//
//	Author [SliverHorn](https://github.com/SliverHorn)
func (menuService *MenuService) UserAuthorityDefaultRouter(user *system.SysUser) {
	menuIds, err := system.QuerySysBaseMenuIdById(user.AuthorityId)
	if err != nil {
		return
	}

	_, err = system.QueryBaseMenuByIdAndDefaultRouter(user.Authority.DefaultRouter, menuIds)

	if errors.Is(err, gorm.ErrRecordNotFound) {
		user.Authority.DefaultRouter = "404"
	}
}