import type { Router } from 'vue-router';

import { LOGIN_PATH } from '@vben/constants';
import { $t } from '@vben/locales';
import { preferences } from '@vben/preferences';
import { useAccessStore, useDictStore, useUserStore } from '@vben/stores';
import { startProgress, stopProgress } from '@vben/utils';

import { message } from 'ant-design-vue';

import { getSimpleDictDataList } from '#/api/system/dict/data';
import { accessRoutes, coreRouteNames } from '#/router/routes';
import { useAuthStore } from '#/store';

import { generateAccess } from './access';
import { safeDestination, terminalHome, terminalType } from '#/mobile/terminal';
import { allowedMobilePath } from '#/mobile/access';

/**
 * 通用守卫配置
 * @param router
 */
function setupCommonGuard(router: Router) {
  // 记录已经加载的页面
  const loadedPaths = new Set<string>();

  router.beforeEach((to) => {
    to.meta.loaded = loadedPaths.has(to.path);

    // 页面加载进度条
    if (!to.meta.loaded && preferences.transition.progress) {
      startProgress();
    }
    return true;
  });

  router.afterEach((to) => {
    // 记录页面是否加载,如果已经加载，后续的页面切换动画等效果不在重复执行

    loadedPaths.add(to.path);

    // 关闭页面加载进度条
    if (preferences.transition.progress) {
      stopProgress();
    }
  });
}

/**
 * 权限访问守卫配置
 * @param router
 */
function setupAccessGuard(router: Router) {
  router.beforeEach(async (to, from) => {
    const accessStore = useAccessStore();
    const userStore = useUserStore();
    const authStore = useAuthStore();
    const dictStore = useDictStore();

    // Mobile core routes require authentication and per-feature authorization.
    if (to.path.startsWith('/mobile')) {
      if (!accessStore.accessToken) return { path: LOGIN_PATH, query: { redirect: encodeURIComponent(to.fullPath) }, replace: true };
      if (terminalType.value !== 'mobile') return preferences.app.defaultHomePath;
      if (authStore.loadedTerminal !== 'mobile') {
        try { await authStore.fetchUserInfo(); }
        catch { return { path: LOGIN_PATH, query: { loadError: '1' }, replace: true }; }
      }
      if (!allowedMobilePath(to.path)) return { path: '/mobile/home', query: { forbidden: '1' }, replace: true };
      return true;
    }
    if (accessStore.accessToken && terminalType.value === 'mobile' && !to.path.startsWith('/auth/')) return '/mobile/home';

    // 基本路由，这些路由不需要进入权限拦截
    if (coreRouteNames.includes(to.name as string)) {
      if (to.path === LOGIN_PATH && accessStore.accessToken && !to.query.loadError) {
        return safeDestination(to.query?.redirect,
          terminalHome() || userStore.userInfo?.homePath || preferences.app.defaultHomePath);
      }
      return true;
    }

    // accessToken 检查
    if (!accessStore.accessToken) {
      // 明确声明忽略权限访问权限，则可以访问
      if (to.meta.ignoreAccess) {
        return true;
      }

      // 没有访问权限，跳转登录页面
      if (to.fullPath !== LOGIN_PATH) {
        return {
          path: LOGIN_PATH,
          // 如不需要，直接删除 query
          query:
            to.fullPath === preferences.app.defaultHomePath
              ? {}
              : { redirect: encodeURIComponent(to.fullPath) },
          // 携带当前跳转的页面，登录后重新跳转该页面
          replace: true,
        };
      }
      return to;
    }

    // A fresh tab or a terminal switch must reload the corresponding menu set.
    if (authStore.loadedTerminal !== 'pc') {
      try {
        await authStore.fetchUserInfo();
        accessStore.setIsAccessChecked(false);
      } catch {
        return { path: LOGIN_PATH, query: { loadError: '1' }, replace: true };
      }
    }
    // 是否已经生成过动态路由
    if (accessStore.isAccessChecked) {
      return true;
    }

    // 加载字典数据（不阻塞加载）
    dictStore.setDictCacheByApi(getSimpleDictDataList);

    // 生成路由表
    // 当前登录用户拥有的角色标识列表
    let userInfo = userStore.userInfo;
    if (!userInfo) {
      // add by 芋艿：由于 yudao 是 fetchUserInfo 统一加载用户 + 权限信息，所以将 fetchMenuListAsync
      const loading = message.loading({
        content: `${$t('common.loadingMenu')}...`,
      });
      try {
        const authPermissionInfo = await authStore.fetchUserInfo();
        if (authPermissionInfo) {
          userInfo = authPermissionInfo.user;
        }
      } finally {
        loading();
      }
    }
    const userRoles = userStore.userRoles ?? [];

    // 生成菜单和路由
    const { accessibleMenus, accessibleRoutes } = await generateAccess({
      roles: userRoles,
      router,
      // 则会在菜单中显示，但是访问会被重定向到403
      routes: accessRoutes,
    });

    // 保存菜单信息和路由信息
    accessStore.setAccessMenus(accessibleMenus);
    accessStore.setAccessRoutes(accessibleRoutes);
    accessStore.setIsAccessChecked(true);
    userStore.setUserRoles(userRoles);
    const redirectPath = (from.query.redirect ??
      (to.path === preferences.app.defaultHomePath
        ? userInfo?.homePath || preferences.app.defaultHomePath
        : to.fullPath)) as string;

    return {
      ...router.resolve(decodeURIComponent(redirectPath)),
      replace: true,
    };
  });
}

/**
 * 项目守卫配置
 * @param router
 */
function createRouterGuard(router: Router) {
  /** 通用 */
  setupCommonGuard(router);
  /** 权限访问 */
  setupAccessGuard(router);
}

export { createRouterGuard };