import router from "./router";
import store from "./store";
import { Message } from "element-ui";
import NProgress from "nprogress";
import "nprogress/nprogress.css";
import { getToken } from "@/utils/auth";
import { isPathMatch } from "@/utils/validate";
import { isRelogin } from "@/utils/request";
import {
  isFullscreenSupported,
  requestFullscreen,
  isFullscreen,
} from "@/utils/fullscreen";
NProgress.configure({ showSpinner: false });

const whiteList = ["/login", "/register"];

const isWhiteList = (path) => {
  return whiteList.some((pattern) => isPathMatch(pattern, path));
};

let userManuallyExitedFullscreen = false;

// 监听全屏状态变化事件
document.addEventListener("fullscreenchange", () => {
  if (!isFullscreen()) {
    userManuallyExitedFullscreen = true;
  }
});

router.beforeEach((to, from, next) => {
  NProgress.start();
  if (getToken()) {
    to.meta.title && store.dispatch("settings/setTitle", to.meta.title);
    /* has token*/
    if (to.path === "/login") {
      next({ path: "/" });
      NProgress.done();
    } else if (isWhiteList(to.path)) {
      if (isFullscreenSupported() && !userManuallyExitedFullscreen) {
        const element = document.documentElement;
        requestFullscreen(element);
      }
      next();
    } else {
      if (store.getters.roles.length === 0) {
        isRelogin.show = true;
        // 判断当前用户是否已拉取完user_info信息
        store
          .dispatch("GetInfo")
          .then(() => {
            isRelogin.show = false;
            store.dispatch("GenerateRoutes").then((accessRoutes) => {
              // 根据roles权限生成可访问的路由表
              router.addRoutes(accessRoutes); // 动态添加可访问路由表
              next({ ...to, replace: true }); // hack方法 确保addRoutes已完成
            });
          })
          .catch((err) => {
            store.dispatch("LogOut").then(() => {
              Message.error(err);
              next({ path: "/" });
            });
          });
      } else {
        if (isFullscreenSupported() && !userManuallyExitedFullscreen) {
          const element = document.documentElement;
          requestFullscreen(element);
        }
        next();
      }
    }
  } else {
    // 没有token
    if (isWhiteList(to.path)) {
      // 在免登录白名单，直接进入
      next();
    } else {
      next(`/login?redirect=${encodeURIComponent(to.fullPath)}`); // 否则全部重定向到登录页
      NProgress.done();
    }
  }
});

router.afterEach(() => {
  NProgress.done();
});