// import auth from '@/plugins/auth'
import { constantRoutes } from '@/router'
import VueRouter from "vue-router";
// import { getRouters } from '@/api/menu'
import Layout from '@/views/homePage/HomePage.vue'
import baseRouters from '@/router/modules/base'

const permission = {
  state: {
    routes: [],
    addRoutes: []
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes
      state.routes = constantRoutes.concat(routes)
    }
  },
  actions: {
    generateRoutes({ commit }, route) {
      return new Promise(resolve => {
        let accessedRoutes
        let dtRoutes = {
          path: '/',
          component: Layout,
          redirect: '/homePage',
          children: [
            ...baseRouters,
            ...route,
            {
              path: '/404',
              component: (resolve) => require(['@/views/error-page/404'], resolve),
              hidden: true
            },
          ]
        };
        accessedRoutes = [
          dtRoutes,
          {
            path: '*',
            redirect: '/404',
            hidden: true
          }
        ]
        console.log(accessedRoutes, baseRouters);
        commit('SET_ROUTES', accessedRoutes)
        resolve(accessedRoutes)
      })
    }
  }
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
      if (el.children && el.children.length) {
        children = children.concat(filterChildren(el.children, el))
        return
      }
    }
    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  // routes.forEach(route => {
  //   if (route.permissions) {
  //     if (auth.hasPermiOr(route.permissions)) {
  //       res.push(route)
  //     }
  //   } else if (route.roles) {
  //     if (auth.hasRoleOr(route.roles)) {
  //       res.push(route)
  //     }
  //   }
  // })
  return res
}

export const loadView = (view) => {
  if (process.env.NODE_ENV === 'development') {
    return (resolve) => require([`@/views/${view}`], resolve)
  } else {
    // 使用 import 实现生产环境的路由懒加载
    return () => import(`@/views/${view}`)
  }
}

export default permission