import router, { resetRouter } from './router';
import store from './store';
import { Message } from 'element-ui';
import NProgress from 'nprogress'; // progress bar
import 'nprogress/nprogress.css'; // progress bar style
import { getToken, setToken } from '@/utils/auth'; // get token from cookie
import getPageTitle from '@/utils/get-page-title';
import { getConfigData } from './api/serverconfig';

async function setConfigDataToStorage() {
  const configdata = localStorage.getItem('configdata');
  if (!configdata) {
    const response = await getConfigData();
    if (response && response.result) {
      const list = response.data.list;
      localStorage.setItem('configdata', JSON.stringify(list));
    }
  }
}

NProgress.configure({ showSpinner: false }); // NProgress Configuration

const whiteList = ['/login','/news',]; // no redirect whitelist

router.beforeEach(async (to, from, next) => {
  // start progress bar
  NProgress.start();

  // set page title
  document.title = getPageTitle(to.meta.title);

  // determine whether the user has logged in
  const hasToken = getToken();
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' });
      NProgress.done();
    } else {
      const hasGetUserInfo = store.getters.name;
      if (hasGetUserInfo) {
        // get config data
        await setConfigDataToStorage();

        next();
      } else {
        try {
          resetRouter();

          // get user online info
          const { permissionId } = await store.dispatch('user/getOnlineInfo');
          const accessRoutes = await store.dispatch('permission/generateRoutes', permissionId);
          router.addRoutes(accessRoutes, { replace: true });


          // get config data
          await setConfigDataToStorage();

          next({ ...to, replace: true });
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken');
          Message.error(error || 'Has Error');
          next(`/login?redirect=${to.path}`);
          NProgress.done();
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next();
    } else if (to.query && to.query.from === 'tohome') {
      setToken('20201538nphycw');
      next('/');
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`);
      NProgress.done();
    }
  }
});

router.afterEach(() => {
  // finish progress bar
  NProgress.done();
});