2026-10-05 16:39:38 +08:00
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import { app, type BrowserWindow } from 'electron';
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import {
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GITHUB_RELEASES_LATEST_API,
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GITHUB_RELEASES_PAGE,
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UPDATE_CHECK_CACHE_TTL_MS,
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UPDATE_CHECK_TIMEOUT_MS,
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UPDATE_CHECK_USER_AGENT,
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isNewerVersion,
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normalizeVersion,
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type UpdateAssetDto,
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type UpdateInfo,
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} from '@classhelper/shared';
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2026-10-11 11:49:32 +08:00
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import { UPDATE_AVAILABLE_CHANNEL } from './channels.js';
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2026-10-05 16:39:38 +08:00
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import { getConfig, saveConfig } from './config.js';
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import { logger } from './logger.js';
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/**
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* 更新检查(桌面客户端)。
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*
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* **为什么在主进程做**:渲染进程通过 preload 能拿到 `getConfig()` 的明文 token(代表全班身份),
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* 它的 CSP 与导航防线是整个安全模型里最要紧的一层;让它额外去连一个外部域名、
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* 解析外部 JSON,等于把"外部数据"请进最有价值的那一侧。主进程本来就在做网络与文件,
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* 放这里也顺带复用 Node 的 fetch(无需额外依赖)。
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*
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* 与 Web 管理端的差别:Web 端受服务端 CSP 的 `connect-src` 限制,只能走 `/api/update/check` 转发;
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* 客户端没有这个限制,按用户选择**直连 GitHub**。两边归一化出的 `UpdateInfo` 结构一致。
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*/
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2026-10-11 11:49:32 +08:00
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/** 主进程 → 渲染进程:发现新版本(渲染进程据此弹一次性提示);定义在叶子模块 `channels.ts` */
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export { UPDATE_AVAILABLE_CHANNEL };
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2026-10-05 16:39:38 +08:00
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/** 启动后多久自动查一次:等窗口与登录流程就绪,也不跟首屏请求抢带宽 */
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const STARTUP_DELAY_MS = 5_000;
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interface GithubReleasePayload {
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tag_name?: unknown;
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name?: unknown;
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published_at?: unknown;
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body?: unknown;
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html_url?: unknown;
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assets?: unknown;
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}
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let cache: { at: number; info: UpdateInfo } | null = null;
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let startupTimer: ReturnType<typeof setTimeout> | null = null;
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/** 冒烟断言用:启动自动检查是否被跳过(冒烟模式下必须是 true) */
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let startupCheckSkipped = false;
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/** 失败的统一出口:结构完整,界面不必做 null 判断 */
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function failure(error: string): UpdateInfo {
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return {
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ok: false,
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error,
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currentVersion: app.getVersion(),
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latestVersion: null,
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hasUpdate: false,
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releaseUrl: GITHUB_RELEASES_PAGE,
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releaseName: null,
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publishedAt: null,
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notes: null,
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assets: [],
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checkedAt: new Date().toISOString(),
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};
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}
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function toAssets(raw: unknown): UpdateAssetDto[] {
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if (!Array.isArray(raw)) return [];
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return raw
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.map((item) => item as { name?: unknown; browser_download_url?: unknown; size?: unknown })
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.filter(
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(item): item is { name: string; browser_download_url: string; size?: unknown } =>
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typeof item.name === 'string' && typeof item.browser_download_url === 'string',
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)
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.map((item) => ({
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name: item.name,
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downloadUrl: item.browser_download_url,
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size: typeof item.size === 'number' && Number.isFinite(item.size) ? item.size : 0,
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}));
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}
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function toInfo(payload: GithubReleasePayload, currentVersion: string): UpdateInfo {
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const latestVersion = normalizeVersion(typeof payload.tag_name === 'string' ? payload.tag_name : '');
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if (!latestVersion) {
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logger.warn('更新检查:GitHub 返回的 Release 里没有可识别的 tag_name');
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return failure('GitHub 返回的版本号无法识别');
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}
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return {
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ok: true,
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error: null,
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currentVersion,
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latestVersion,
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hasUpdate: isNewerVersion(currentVersion, latestVersion),
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releaseUrl:
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typeof payload.html_url === 'string' && payload.html_url ? payload.html_url : GITHUB_RELEASES_PAGE,
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releaseName: typeof payload.name === 'string' ? payload.name : null,
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publishedAt: typeof payload.published_at === 'string' ? payload.published_at : null,
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notes: typeof payload.body === 'string' ? payload.body : null,
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assets: toAssets(payload.assets),
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checkedAt: new Date().toISOString(),
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};
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}
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/** 把各种失败翻译成一句用户能看懂的话(教室里最常见的就是"这台机器没有外网") */
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function describeFailure(error: unknown): string {
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const message = error instanceof Error ? error.message : String(error);
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if (error instanceof Error && error.name === 'TimeoutError') {
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return `连接 GitHub 超时(${UPDATE_CHECK_TIMEOUT_MS / 1000} 秒),本机可能没有外网`;
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}
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if (/fetch failed|ENOTFOUND|ECONNREFUSED|EAI_AGAIN|ETIMEDOUT|certificate|net::/i.test(message)) {
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return '无法连接 GitHub,本机可能没有外网';
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}
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return `检查更新失败:${message}`;
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}
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/**
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* 检查 GitHub 上有没有比本机新的版本(结果带缓存)。
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*
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* 缓存的意义:匿名调用 GitHub API 的限流是 60 次/小时/IP,而「关于」页的按钮可以随便点。
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* 失败结果同样进缓存 —— 否则离线时每点一次都要白等一个超时。
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*/
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export async function checkForUpdates(force = false): Promise<UpdateInfo> {
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const currentVersion = app.getVersion();
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const now = Date.now();
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if (!force && cache && now - cache.at < UPDATE_CHECK_CACHE_TTL_MS) {
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return cache.info;
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}
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let info: UpdateInfo;
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try {
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const response = await fetch(GITHUB_RELEASES_LATEST_API, {
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headers: {
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// GitHub API 强制要求 User-Agent,不带会直接 403
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'User-Agent': UPDATE_CHECK_USER_AGENT,
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Accept: 'application/vnd.github+json',
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},
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signal: AbortSignal.timeout(UPDATE_CHECK_TIMEOUT_MS),
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});
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if (!response.ok) {
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info =
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response.status === 403 || response.status === 429
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? failure('GitHub 暂时拒绝了请求(匿名查询次数过多),请过一会儿再试')
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: failure(`GitHub 返回 HTTP ${response.status}`);
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logger.warn(`更新检查失败:HTTP ${response.status}(本机版本 ${currentVersion})`);
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} else {
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info = toInfo((await response.json()) as GithubReleasePayload, currentVersion);
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logger.info(
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`更新检查:本机 ${currentVersion} / 最新 ${info.latestVersion ?? '-'}` +
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`${info.hasUpdate ? '(有新版本)' : '(已是最新)'}`,
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);
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}
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} catch (error) {
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info = failure(describeFailure(error));
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logger.warn(`更新检查失败:${info.error}(本机版本 ${currentVersion})`);
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}
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cache = { at: now, info };
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return info;
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}
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/** 「知道了 / 忽略此版本」:记到配置里,同一个版本不再重复弹提示 */
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export function ignoreUpdateVersion(version: string): void {
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const normalized = normalizeVersion(version);
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if (!normalized) return;
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saveConfig({ ignoredUpdateVersion: normalized });
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logger.info(`已忽略版本 ${normalized} 的更新提示`);
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}
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/** 该版本是否已被用户忽略 */
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export function isUpdateIgnored(version: string): boolean {
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return normalizeVersion(getConfig().ignoredUpdateVersion) === normalizeVersion(version);
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}
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/**
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* 启动后的自动检查:延迟 `STARTUP_DELAY_MS` 查一次,有新版本(且没被忽略)就通知渲染进程弹提示。
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*
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* **冒烟模式直接跳过**:自动化验证不该每次都发真实网络请求(既抖动又依赖外网),
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* 而且凭空多出来的提示条会撞坏既有 UI 断言。冒烟用例改为直接调 IPC 验证返回结构。
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*/
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export function scheduleStartupUpdateCheck(getWindow: () => BrowserWindow | null): void {
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if (process.env.ELECTRON_SMOKE_TEST === '1') {
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startupCheckSkipped = true;
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logger.info('更新检查:冒烟模式下跳过启动自动检查');
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return;
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}
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if (startupTimer) clearTimeout(startupTimer);
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startupTimer = setTimeout(() => {
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startupTimer = null;
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void (async () => {
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try {
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const info = await checkForUpdates();
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if (!info.ok || !info.hasUpdate || !info.latestVersion) return;
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if (isUpdateIgnored(info.latestVersion)) {
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logger.info(`更新检查:${info.latestVersion} 已被用户忽略,本次不提示`);
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return;
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}
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const win = getWindow();
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if (!win || win.isDestroyed()) return;
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win.webContents.send(UPDATE_AVAILABLE_CHANNEL, info);
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logger.info(`更新检查:已提示新版本 ${info.latestVersion}`);
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} catch (error) {
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// 自动检查失败不该打扰用户(手动检查才需要看到原因)
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logger.warn(`启动自动检查更新失败:${error instanceof Error ? error.message : error}`);
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}
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})();
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}, STARTUP_DELAY_MS);
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// 不阻止进程退出:这个定时器只是"顺便查一下"
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startupTimer.unref?.();
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}
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/** 冒烟断言用:启动自动检查是否被跳过(冒烟模式下应为 true —— 否则每次验证都会发真实网络请求) */
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export function wasStartupCheckSkipped(): boolean {
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return startupCheckSkipped;
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}
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