import {
  asyncRoutes,
  constantRoutes
} from '@/router'
import Layout from '@/layout'
import { getWebMenu } from '@/api/wms-auth'
/**
 * 静态路由懒加载
 * @param view  格式必须为 xxx/xxx 开头不要加斜杠
 * @returns
 */
 export const loadView = (view) => {
  return (resolve) => require([`@/views/${view}`], resolve)
}
/**
 * 把从后端查询的菜单数据拼装成路由格式的数据
 * @param routes
 * @param data 后端返回的菜单数据
 */
export function generaMenu(routes, data) {
  data.forEach(item => {
    const menu = {
      path: item.code,
      component: item.component === '@/layout' ? Layout : loadView(item.component),
      // hidden: item.status === 0, // 状态为0的隐藏
      children: [],
      name: item.code,
      // meta: item.meta
      meta: {
        title: item.name,
        icon: item.icon || '',
        roles: item.permission
      },
      
    }
    // 一级菜单 二级菜单 特定属性
    if (item.component == '@/layout' || item.component == 'index') {
      menu.alwaysShow = true
      menu.redirect = 'noRedirect'
    }
    if (item.sort < 99) {
      menu.level = 1
    } else if (item.sort > 99 && item.sort < 9999) {
      menu.level = 2
    } else {
      menu.level = 3
    }
    // iframe页面处理
    // if (item.permission.indexOf('Report') > -1) {
    //   // delete menu.component
    //   menu.iframeComponent = item.component === '@/layout' ? Layout : loadView(item.component)
    //   menu.hasOpen = false // 是否打开过，默认false
    // }
    if (item.children && item.children.length > 0) {
      generaMenu(menu.children, item.children)
    }
    // if (item.permission == 'skip' && item.children.length == 0) {
    // }
    routes.push(menu)
  })
  return routes
}

/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta && route.meta.roles) {
    if (route.meta.roles == "skip") {
      return true
    } else {
      return roles.some(role => route.meta.roles.includes(role))
    }
  } else {
    return false
  }
}
const filterAccessedRoutes = (items,indexVal,childrenIndex) => {
  const route = JSON.parse(JSON.stringify(items))
  route.forEach((val, index) => {
    // debugger;
    if(val.meta && val.meta.roles == "skip"){
      if (val.children && val.children.length != 0) {
        filterAccessedRoutes(items[index-indexVal].children,childrenIndex)
      }
      if(items[index-indexVal].children && items[index-indexVal].children.length == 0){
        items.splice(index-indexVal, 1)
        indexVal++
      }
    }
  })
  indexVal = 0
}
/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */
export function filterAsyncRoutes(routes, roles) {
  const res = []
  routes.forEach(route => {
    const tmp = {
      ...route
    }
    if (hasPermission(roles, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRoutes(tmp.children, roles)
      }
      res.push(tmp)
    }
  })
  return res
}

const state = {
  routes: [],
  addRoutes: []
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}
// todo-new:有token后使用generateRoutes,去掉下方一行代码
state.routes = constantRoutes.concat(asyncRoutes)

const actions = {
  generateRoutes({
    commit
  }, userId) {
    return new Promise(resolve => {
      // let accessedRoutes = asyncRoutes
      // // accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
      // let indexVal = 0
      // let childrenIndex = 0
      // filterAccessedRoutes(accessedRoutes,indexVal,childrenIndex)
      // commit('SET_ROUTES', accessedRoutes)
      // resolve(accessedRoutes)
      // todo-new:动态路由(等token接口恢复后处理)
      getWebMenu({userId: userId}).then(res => {
        let accessedRoutes = generaMenu(asyncRoutes, res)
        let indexVal = 0
        let childrenIndex = 0
        filterAccessedRoutes(accessedRoutes,indexVal,childrenIndex)
        commit('SET_ROUTES', accessedRoutes)
        resolve(accessedRoutes)
      }).catch(err => {
        console.log(err)
      })
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}