text: import { asyncRouterMap, constantRouterMap } from '@/router'
  
  /**
   * 通过meta.role判断是否与当前用户权限匹配
   * @param roles
   * @param route
   */
  function hasPermission(roles, route) {
    if (route.meta && route.meta.roles) {
      return roles.some(role => route.meta.roles.indexOf(role) >= 0)
    } 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 asyncRouterMap
   * @param roles
   */
  function filterAsyncRouter(asyncRouterMap, roles) {
    const accessedRouters = asyncRouterMap.filter(route => {
      if (hasPermission(roles, route)) {
        if (route.children && route.children.length) {
          route.children = filterAsyncRouter(route.children, roles)
        }
        return true
      }
      return false
    })
    return accessedRouters
  }
  
  const permission = {
    state: {
      routers: constantRouterMap,
      addRouters: [],
      types: [{ keyWord: 'ACTION', name: '操作权限[ACTION]' }, { keyWord: 'DATA', name: '数据权限[DATA]' },
        { keyWord: 'PAGE', name: '页面权限[PAGE]' }, { keyWord: 'MENU', name: '菜单权限[MENU]' }, { keyWord: 'URL', name: '链接权限[URL]' }]
    },
    mutations: {
      SET_ROUTERS: (state, routers) => {
        state.addRouters = routers
        state.routers = constantRouterMap.concat(routers)
      }
    },
    actions: {
      GenerateRoutes({ commit }, data) {
        return new Promise(resolve => {
          const { roles } = data
          let accessedRouters
          if (roles.indexOf('AD') >= 0) {
            accessedRouters = asyncRouterMap
          } else {
            accessedRouters = filterAsyncRouter(asyncRouterMap, roles)
          }
          commit('SET_ROUTERS', accessedRouters)
          resolve()
        })
      }
    }
  }
  
  export default permission
  