55 lines
1.3 KiB
TypeScript
55 lines
1.3 KiB
TypeScript
import type { MarkdownRenderRequest } from "@md-to-pdf/application";
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function isRecord(value: unknown): value is Record<string, unknown> {
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return typeof value === "object" && value !== null;
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}
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export function parseMarkdownRenderRequest(
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value: unknown
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): MarkdownRenderRequest {
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if (!isRecord(value)) {
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return {};
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}
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return {
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markdown: value.markdown,
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language: value.language,
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resources: value.resources
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};
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}
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export function parseThemeId(value: unknown) {
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if (
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typeof value !== "string" ||
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!/^[a-z0-9][a-z0-9._-]{0,99}$/i.test(value)
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) {
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throw new Error("主题 ID 无效");
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}
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return value;
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}
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export function parseThemeResourceUrl(requestUrl: string) {
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const url = new URL(requestUrl);
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if (url.protocol !== "mdpdf:" || url.host !== "theme") {
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return undefined;
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}
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let segments: string[];
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try {
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segments = url.pathname
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.split("/")
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.filter(Boolean)
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.map((segment) => decodeURIComponent(segment));
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} catch {
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throw new Error("主题资源地址无效");
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}
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const [unsafeThemeId, ...assetSegments] = segments;
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if (!unsafeThemeId || assetSegments.length === 0) {
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throw new Error("主题资源地址无效");
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}
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return {
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themeId: parseThemeId(unsafeThemeId),
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assetPath: assetSegments.join("/")
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};
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}
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