import { createRouter, createWebHashHistory } from 'vue-router';
import NProgress from 'nprogress';
import 'nprogress/nprogress.css';
import pinia from '/@/stores/index';
import { storeToRefs } from 'pinia';
import { useKeepALiveNames } from '/@/stores/keepAliveNames';
import { useRoutesList } from '/@/stores/routesList';
import { useThemeConfig } from '/@/stores/themeConfig';
import { Session } from '/@/utils/storage';
import { staticRoutes } from '/@/router/route';
import { initFrontEndControlRoutes } from '/@/router/frontEnd';
import { initBackEndControlRoutes } from '/@/router/backEnd';
import { useUserInfo } from '/@/stores/userInfo';
import { nextTick } from 'vue';

// 读取 `/src/stores/themeConfig.ts` 是否开启后端控制路由配置
const storesThemeConfig = useThemeConfig(pinia);
const { themeConfig } = storeToRefs(storesThemeConfig);
const { isRequestRoutes } = themeConfig.value;
if (isRequestRoutes) staticRoutes.splice(0, 1);

export const router = createRouter({
    history: createWebHashHistory(),
    routes: staticRoutes
});

export function formatFlatteningRoutes(arr: any) {
    if (arr.length <= 0) return false;
    for (let i = 0; i < arr.length; i++) {
        if (arr[i].children) {
            arr = arr.slice(0, i + 1).concat(arr[i].children, arr.slice(i + 1));
        }
    }
    return arr;
}

export function formatTwoStageRoutes(arr: any) {
    if (arr.length <= 0) return false;
    const newArr: any = [];
    const cacheList: Array<string> = [];
    arr.forEach((v: any) => {
        if (v.path === '/') {
            newArr.push({ component: v.component, name: v.name, path: v.path, redirect: v.redirect, meta: v.meta, children: [] });
        } else {
            // 判断是否是动态路由（xx/:id/:name），用于 tagsView 等中使用
            // 修复：https://gitee.com/lyt-top/vue-next-admin/issues/I3YX6G
            if (v.path.indexOf('/:') > -1) {
                v.meta['isDynamic'] = true;
                v.meta['isDynamicPath'] = v.path;
            }
            newArr[0].children.push({ ...v });
            // 存 name 值，keep-alive 中 include 使用，实现路由的缓存
            // 路径：/@/layout/routerView/parent.vue
            if (newArr[0].meta.isKeepAlive && v.meta.isKeepAlive) {
                cacheList.push(v.name);
                const stores = useKeepALiveNames(pinia);
                stores.setCacheKeepAlive(cacheList);
            }
        }
    });
    return newArr;
}

// // isRequestRoutes 为 true，则开启后端控制路由，路径：`/src/stores/themeConfig.ts`
// if (!isRequestRoutes) initFrontEndControlRoutes();

// 路由加载前
router.beforeEach(async (to, from, next) => {
    NProgress.configure({ showSpinner: false });
    if (to.meta.title) NProgress.start();
    const token = Session.get('token');
    if (to.path === '/login' && !token) {
        next();
        NProgress.done();
    } else {
        if (!token) {
            next(`/login?redirect=${to.path}&params=${JSON.stringify(to.query ? to.query : to.params)}`);
            Session.clear();
            NProgress.done();
        } else if (token && to.path === '/login') {
            next('/home');
            NProgress.done();
        } else {
            const storesRoutesList = useRoutesList(pinia);
            const { routesList } = storeToRefs(storesRoutesList);
            if (routesList.value.length === 0) {

                // 后端控制路由：路由数据初始化，防止刷新时丢失
                await initBackEndControlRoutes();
                // 动态添加路由：防止非首页刷新时跳转回首页的问题
                // 确保 addRoute() 时动态添加的路由已经被完全加载上去
                next({ ...to, replace: true });
            } else {
                next();
            }
        }
    }
});

// 路由加载后
router.afterEach(() => {
    NProgress.done();
});

// 导出路由
export default router;