import { isUrl } from "/@/utils/is";
import { getConfig } from "/@/config";
import { toRouteType } from "./types";
import { openLink } from "/@/utils/link";
import NProgress from "/@/utils/progress";
import { findIndex } from "lodash-unified";
import { transformI18n } from "/@/plugins/i18n";
import { storageSession } from "/@/utils/storage";
import { buildHierarchyTree } from "/@/utils/tree";
import { useMultiTagsStoreHook } from "/@/store/modules/multiTags";
import { usePermissionStoreHook } from "/@/store/modules/permission";
import {
  Router,
  RouteMeta,
  createRouter,
  RouteRecordRaw,
  RouteComponent,
  RouteRecordName
} from "vue-router";
import {
  ascending,
  initRouter,
  getHistoryMode,
  getParentPaths,
  findRouteByPath,
  handleAliveRoute,
  formatTwoStageRoutes,
  formatFlatteningRoutes
} from "./utils";

import pptRouter from "./modules/ppt";
import homeRouter from "./modules/home";
import ableRouter from "./modules/able";
import listRouter from "./modules/list";
import aboutRouter from "./modules/about";
import errorRouter from "./modules/error";
import guideRouter from "./modules/guide";
import resultRouter from "./modules/result";
import editorRouter from "./modules/editor";
import nestedRouter from "./modules/nested";
import flowChartRouter from "./modules/flowchart";
import remainingRouter from "./modules/remaining";
import componentsRouter from "./modules/components";

// 原始静态路由（未做任何处理）
const routes = [
  pptRouter,
  homeRouter,
  ableRouter,
  listRouter,
  aboutRouter,
  errorRouter,
  guideRouter,
  resultRouter,
  nestedRouter,
  editorRouter,
  flowChartRouter,
  componentsRouter
];

// 导出处理后的静态路由（三级及以上的路由全部拍成二级）
export const constantRoutes: Array<RouteRecordRaw> = formatTwoStageRoutes(
  formatFlatteningRoutes(buildHierarchyTree(ascending(routes)))
);

// 用于渲染菜单，保持原始层级
export const constantMenus: Array<RouteComponent> = ascending(routes).concat(
  ...remainingRouter
);

// 不参与菜单的路由
export const remainingPaths = Object.keys(remainingRouter).map(v => {
  return remainingRouter[v].path;
});

// 创建路由实例
export const router: Router = createRouter({
  history: getHistoryMode(),
  routes: constantRoutes.concat(...remainingRouter),
  strict: true,
  scrollBehavior(to, from, savedPosition) {
    return new Promise(resolve => {
      if (savedPosition) {
        return savedPosition;
      } else {
        if (from.meta.saveSrollTop) {
          const top: number =
            document.documentElement.scrollTop || document.body.scrollTop;
          resolve({ left: 0, top });
        }
      }
    });
  }
});

// 路由白名单
const whiteList = ["/login"];

router.beforeEach((to: toRouteType, _from, next) => {
  if (to.meta?.keepAlive) {
    const newMatched = to.matched;
    handleAliveRoute(newMatched, "add");
    // 页面整体刷新和点击标签页刷新
    if (_from.name === undefined || _from.name === "redirect") {
      handleAliveRoute(newMatched);
    }
  }
  const name = storageSession.getItem("info");
  NProgress.start();
  const externalLink = isUrl(to?.name);
  if (!externalLink)
    to.matched.some(item => {
      if (!item.meta.title) return "";
      const Title = getConfig().Title;
      if (Title)
        document.title = `${transformI18n(
          item.meta.title,
          item.meta?.i18n
        )} | ${Title}`;
      else document.title = transformI18n(item.meta.title, item.meta?.i18n);
    });
  if (name) {
    if (_from?.name) {
      // name为超链接
      if (externalLink) {
        openLink(to?.name);
        NProgress.done();
      } else {
        next();
      }
    } else {
      // 刷新
      if (usePermissionStoreHook().wholeMenus.length === 0)
        initRouter(name.username).then((router: Router) => {
          if (!useMultiTagsStoreHook().getMultiTagsCache) {
            const handTag = (
              path: string,
              parentPath: string,
              name: RouteRecordName,
              meta: RouteMeta
            ): void => {
              useMultiTagsStoreHook().handleTags("push", {
                path,
                parentPath,
                name,
                meta
              });
            };
            // 未开启标签页缓存，刷新页面重定向到顶级路由（参考标签页操作例子，只针对静态路由）
            if (to.meta?.refreshRedirect) {
              const routes = router.options.routes;
              const { refreshRedirect } = to.meta;
              const { name, meta } = findRouteByPath(refreshRedirect, routes);
              handTag(
                refreshRedirect,
                getParentPaths(refreshRedirect, routes)[1],
                name,
                meta
              );
              return router.push(refreshRedirect);
            } else {
              const { path } = to;
              const index = findIndex(remainingRouter, v => {
                return v.path == path;
              });
              const routes =
                index === -1
                  ? router.options.routes[0].children
                  : router.options.routes;
              const route = findRouteByPath(path, routes);
              const routePartent = getParentPaths(path, routes);
              // 未开启标签页缓存，刷新页面重定向到顶级路由（参考标签页操作例子，只针对动态路由）
              if (
                path !== routes[0].path &&
                route?.meta?.rank !== 0 &&
                routePartent.length === 0
              ) {
                if (!route?.meta?.refreshRedirect) return;
                const { name, meta } = findRouteByPath(
                  route.meta.refreshRedirect,
                  routes
                );
                handTag(
                  route.meta?.refreshRedirect,
                  getParentPaths(route.meta?.refreshRedirect, routes)[0],
                  name,
                  meta
                );
                return router.push(route.meta?.refreshRedirect);
              } else {
                handTag(
                  route.path,
                  routePartent[routePartent.length - 1],
                  route.name,
                  route.meta
                );
                return router.push(path);
              }
            }
          }
          router.push(to.fullPath);
        });
      next();
    }
  } else {
    if (to.path !== "/login") {
      if (whiteList.indexOf(to.path) !== -1) {
        next();
      } else {
        next({ path: "/login" });
      }
    } else {
      next();
    }
  }
});

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

export default router;