text: import { asyncRouterMap, constantRouterMap } from '@/router'
  
  /**
   * 通过meta.perms判断是否与当前用户权限匹配
   * @param perms
   * @param route
   */
  function hasPermission(perms, route) {
    if (route.meta && route.meta.perms) {
      return perms.some(perm => route.meta.perms.includes(perm))
    } else {
      return true
    }
  }
  
  /**
   * 递归过滤异步路由表，返回符合用户角色权限的路由表
   * @param routes asyncRouterMap
   * @param perms
   */
  function filterAsyncRouter(routes, perms) {
    const res = []
  
    routes.forEach(route => {
      const tmp = { ...route }
      if (tmp.children) {
        tmp.children = filterAsyncRouter(tmp.children, perms)
        if (tmp.children && tmp.children.length > 0) {
          res.push(tmp)
        }
      } else {
        if (hasPermission(perms, tmp)) {
          res.push(tmp)
        }
      }
    })
  
    return res
  }
  
  const permission = {
    state: {
      routers: constantRouterMap,
      addRouters: []
    },
    mutations: {
      SET_ROUTERS: (state, routers) => {
        state.addRouters = routers
        state.routers = constantRouterMap.concat(routers)
      }
    },
    actions: {
      GenerateRoutes({ commit }, data) {
        return new Promise(resolve => {
          const { perms } = data
          let accessedRouters
          if (perms.includes('*')) {
            accessedRouters = asyncRouterMap
          } else {
            accessedRouters = filterAsyncRouter(asyncRouterMap, perms)
            console.log(accessedRouters)
          }
          commit('SET_ROUTERS', accessedRouters)
          resolve()
        })
      }
    }
  }
  
  export default permission
  