import {
  asyncRoutes,
  constantRoutes
} from '@/router'
import Layout from '@/layout'
import {
  getAuthMenu
} from '@/api/user.js'
const pathHandler = (item) => {
  if(!item.path || item.path?.includes('#') || item.path == ''){
    return item.id + '_key'
  }
  if(/^\^/.test(item.path)){
    return item.path.replace(/^\^+/g,"")
  }
  if(/^\$/.test(item.path)){
    return item.path.replace(/^\$+/g,"")
  }
  return item.path
  // if(path.includes('$')){
  //   return path.replace(/^\$+/g,"")
  // }
  // if(path.includes('^')){
  //   return path.replace(/^\^+/g,"")
  // }
  // if(path.includes('#') || path == ''){
  //   return id + '_key'
  // }
  // return path
}
const componentHandler = (path) => {
  //return path === '#'|| path == ''  ? Layout : loadView(path)
  if(path === '#' || path === ''){
    return Layout
  }
  if(path.includes('#') && path !== '#'){
    return ()=>import('@/layout/noLayout')
  }
  return loadView(path)
}
/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta && route.meta.roles) {
    return roles.some(role => route.meta.roles.includes(role))
  } else {
    return true
  }
}
/**
 * 静态路由懒加载
 * @param view  格式必须为 xxx/xxx 开头不要加斜杠
 * @returns
 */
export const loadView = (view) => {
  return (resolve) => require([`@/views${view}`], resolve);
}


/**
 * 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: [],
  rootMenu:[],
  systemMenu:[],
  addRoutes: [],

  sidebarMenuMap: new Map()
}

/**
 * 后台查询的菜单数据拼装成路由格式的数据
 * @param routes
 */
export function generaMenu(routes, data) {
  data.forEach(item => {
    let params = {};
    if(item.path?.includes('?')){
      let flag = item.path.split('?')
      item.path = flag[0]
      if(flag[1]){
        let list = flag[1].split('&')
        list.forEach(item => {
          let kv = item.split('=')
          Object.defineProperty(params,kv[0],{
            value:kv[1],
            writable:true,
            enumerable:true,
            configurable:false
          })
        })
      }
    }
    if (item.url === "/") {
      routes.push({
        path: '/',
        component: Layout,
        redirect: '/worker',
        children: [{
          path: 'dashboard',
          name: '系统首页',
          component: () => import('@/views/dashboard/index'),
          meta: {
            title: '系统首页',
            icon: 'dashboard',
            params
          }
        }]
      })
    }else if(/^\^/.test(item.path)){
      const menu = {
        path:  pathHandler(item),
        component: Layout,
        children: [{
          path: "",
          name: 'menu_' + item.id,
          component: (item.url.includes('#')||item.path == '')  ? Layout : loadView(item.url),
          meta: {
            title: item.name,
            id: item.id,
            roles: ['admin'],
            auths:item.has_auth_node_tags,
            params,

            icon: item.icon
          }
        }, ]
      }
      if (item.children) {
        generaMenu(menu.children, item.children)
      }
      routes.push(menu)
    } else {
     var path = item.url;
     if (item.path != "null" && item.path != null && item.path != "") {
       path = item.path
     }
     const menu = {
       path: (path.includes('#') ? item.id + '_key' : path),
       redirect: item.redirect || '',
       component: componentHandler(item.url),
       hidden: item.hidden ?? false,
       children: [],
       name: 'menu_' + item.id,
       meta: {
         title: item.name,
         id: item.id,
         roles: ['admin'],
         params,
         icon: item.icon
       }
     }
     if (item.children) {
       generaMenu(menu.children, item.children)
     }

     routes.push(menu)
    }
  })
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  },
  SET_ROOTMENU:(state,menu) => {
    state.rootMenu = menu
  },
  SET_SYSTEMMENU:(state,menu) => {
    state.systemMenu = menu
  },
  SET_SIDEBARMENUMAP: (state,{ k,v }) => {
    state.sidebarMenuMap.set(k,v)
  }
}



const actions = {
  generateRoutes({
    commit
  }, roles) {
    return new Promise(resolve => {
      const loadMenuData = []
      // 先查询后台并返回左侧菜单数据并把数据添加到路由
      getAuthMenu(state.token).then(response => {
        let data = response

        commit('SET_ROOTMENU',data)

        let routes = data?.find(item => item.path === '/contract').children
        let root = data?.map(item => {
          let menu = []
          generaMenu(menu,item.children)
          commit('SET_SIDEBARMENUMAP', { k: item.path, v: menu })
          if(item.children.length > 0){
            item.redirect = item.children[0]?.path
          }
          if(item.path === '/contract') {
            item.redirect = '/contract/dashboard'
          }
          item.hidden = true
          return item
        })
        Object.assign(loadMenuData, [...routes,...root])
        asyncRoutes.length=0;
        generaMenu(asyncRoutes, loadMenuData)

        //console.log(asyncRoutes)
        let accessedRoutes
        if (roles.includes('admin')) {
          accessedRoutes = asyncRoutes || []
        } else {
          accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
        }
        accessedRoutes.push({
          path: '*',
          redirect: '/404',
          hidden: true
        })
        commit('SET_ROUTES', accessedRoutes)
        resolve(accessedRoutes)

        // generaMenu(asyncRoutes, data)
      }).catch(error => {
        console.log(error)
      })
    })
  }
}


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