R524809
66 lines
2.6 KiB
TypeScript
66 lines
2.6 KiB
TypeScript
/** 与后端及 asset-sync 的公开资源配置保持一致；此处不包含上传凭据。 */
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export const assetConfig = {
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publicDomain: 'https://cdn.joeyone.cn',
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keyPrefix: 'doodle-assets/',
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};
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/** 固定字体和页面预览使用相对路径；接口返回的资源 URL 直接使用。 */
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export function publicAssetUrl(relativePath: string): string {
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const parts = relativePath.split('/');
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if (
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relativePath.includes('\\') ||
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[...relativePath].some(
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(char) => char.charCodeAt(0) < 32 || char.charCodeAt(0) === 127,
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) ||
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parts.some((part) => !part || part === '.' || part === '..')
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)
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throw new Error('资源相对路径不正确');
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const domain = assetConfig.publicDomain.replace(/\/+$/, '');
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const prefix = assetConfig.keyPrefix.replace(/\/+$/, '');
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return `${domain}/${[...(prefix ? prefix.split('/') : []), ...parts].map(encodeURIComponent).join('/')}`;
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}
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const LEGACY_PREVIEW_PREFIX =
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'cloud://cloud1-9gifs7a2756e2c87.636c-cloud1-9gifs7a2756e2c87-1351593184/';
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const LEGACY_PREVIEW_HTTPS =
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/^https?:\/\/636c-cloud1-9gifs7a2756e2c87-1351593184\.tcb\.qcloud\.la\/([^?#]+)(?:[?#].*)?$/;
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/** 旧预拉取、缓存和云函数中的预览图指向已迁移的公开目录；其他资源不作替换。 */
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export function resolvePreviewUrl(value: unknown): string {
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if (typeof value !== 'string') return '';
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const raw = value.trim();
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let path: string;
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if (raw.startsWith(LEGACY_PREVIEW_PREFIX)) {
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path = raw.slice(LEGACY_PREVIEW_PREFIX.length);
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if (/[?#]/.test(path)) return '';
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} else {
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const match = raw.match(LEGACY_PREVIEW_HTTPS);
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if (!match) return raw;
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path = match[1];
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}
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try {
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path = path.split('/').map(decodeURIComponent).join('/');
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if (!path.startsWith('assets/previews/')) return raw;
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return publicAssetUrl(path);
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} catch {
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// 畸形路径不继续请求旧云存储，也不生成越界的 CDN 地址。
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return '';
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}
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}
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/** 统一处理预拉取/缓存中的嵌套 previewImg；不修改原数据、头像和其他云文件引用。 */
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export function normalizePreviewImages<T>(value: T): T {
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if (Array.isArray(value)) {
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return value.map((item) => normalizePreviewImages(item)) as T;
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}
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if (!value || typeof value !== 'object') return value;
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const result = { ...value } as Record<string, unknown>;
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for (const key of Object.keys(result)) {
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result[key] =
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key === 'previewImg'
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? resolvePreviewUrl(result[key])
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: normalizePreviewImages(result[key]);
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}
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return result as T;
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}
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