import { constantRoutes } from '@/router'
import { getRouters,getUserRouters } from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView';
import { titleCase } from '@/utils/index.js'
import { getToken } from '@/utils/auth'

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: []
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes
      state.routes = constantRoutes.concat(routes)
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes)
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      // 顶部导航菜单默认添加统计报表栏指向首页
      // const index = [{
      //   path: 'index',
      //   meta: { title: '统计报表', icon: 'dashboard' }
      // }]
      // state.topbarRouters = routes.concat(index);
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes
    },
  },
  actions: {
    // 生成路由
    async GenerateRoutes({ commit }) {
      return new Promise(resolve => {
        // 向后端请求路由数据
        getUserRouters().then(res => {
          const sdata = JSON.parse(JSON.stringify(routeItemInfo(res.data)))
          const rdata = JSON.parse(JSON.stringify(routeItemInfo(res.data)))
          const sidebarRoutes = filterAsyncRouter(sdata)
          const rewriteRoutes = filterAsyncRouter(rdata, false, true)
          rewriteRoutes.push({ path: '*', redirect: '/reportingData', hidden: true })
          commit('SET_ROUTES', rewriteRoutes)
          commit('SET_SIDEBAR_ROUTERS', sidebarRoutes)
          commit('SET_DEFAULT_ROUTES', sidebarRoutes)
          commit('SET_TOPBAR_ROUTES', sidebarRoutes)
          resolve(rewriteRoutes)
        })
      })
    },
    changeRoutes({ commit }, routes) {
      commit('SET_ROUTES', routes)
      commit('SET_SIDEBAR_ROUTERS', routes)
      commit('SET_DEFAULT_ROUTES', routes)
      commit('SET_TOPBAR_ROUTES', routes)
    }
  }
}

// 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 => {
    // 屏蔽包含 summary 的路由
    if (route.path.includes('summary')) {
      return false;
    }
    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') {
        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
    }
    children = children.concat(el)
  })
  return children
}


//针对出口数据结构特殊处理
//对ext框架route数据结构进行初始化
function setRoute(route, childrens) {
  let rootRoute = {}
  let arr = []
  childrens.forEach(item => {
    route.forEach(val => {
      val.id == 999999 ? rootRoute = val : ''
      if (item.parentId == val.id) {
        item.component = `${titleCase(val.name, 'low') != '' ? '/' + titleCase(val.name, 'low') : ''}${item.component}`
        val.children.push(item)
        val.component = 'Layout'
        // val.meta = item.meta
        val.alwaysShow = false

        if (val.path == '/newui_entryIO_parent') {
          val.hidden = true
          item.name = 'ol' + item.name
        }
      }
    })
  })
  return route
}

function routeItemInfo(data) {
  const routes = [
    {
      path: '/redirect',
      component: Layout,
      hidden: true,
      children: [
        {
          path: '/redirect/:path(.*)',
          component: (resolve) => require(['@/views/redirect'], resolve)
        }
      ]
    },
    {
      path: '/404',
      component: (resolve) => require(['@/views/error/404'], resolve),
      hidden: true
    },
    {
      path: '/401',
      component: (resolve) => require(['@/views/error/401'], resolve),
      hidden: true
    },
    {
      path: '/login',
      component: (resolve) => require(['@/views/login'], resolve),
      hidden: true,
      meta: { noCache: true }
    },
    {
      path: '/relogin',
      component: (resolve) => require(['@/views/redjrectLogin'], resolve),
      hidden: true,
      meta: { noCache: true, breadcrumb: false }
    }
  ];

  data.forEach(item => {
    const isParent=item.parentId==0 && item.children.length==0;
    const route = {
      path: item.path,
      component: "Layout",
      alwaysShow: true,
      hidden: false,
      meta: { title: item.name, icon: item.icon },
      children: !isParent ? item.children.map(child => ({
        path: child.path,
        component: `${child.path}`,
        hidden: false,
        name: child.name,
        meta: { title: child.name, icon: child.icon || '' }
      }))
      :
      [
        {
          path: item.path,
           component: `${item.path}`,
           hidden: false,
           name: item.name,
           meta: { title: item.name, icon: item.icon || '' }
          }
      ]


    };
    routes.push(route);
  });

  console.log(routes);
  return routes;
}

export const loadView = (view) => { // 路由懒加载
  return (resolve) => require([`@/views${view}/index.vue`], resolve)
}

export default permission