feat: 发布 v0.4.0 桌面端

apps/desktop/src/application-contract.ts

@@ -0,0 +1,53 @@
+import type { MarkdownRenderRequest } from "@md-to-pdf/application";
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null;
+}
+
+export function parseMarkdownRenderRequest(
+  value: unknown
+): MarkdownRenderRequest {
+  if (!isRecord(value)) {
+    return {};
+  }
+  return {
+    markdown: value.markdown,
+    language: value.language
+  };
+}
+
+export function parseThemeId(value: unknown) {
+  if (
+    typeof value !== "string" ||
+    !/^[a-z0-9][a-z0-9._-]{0,99}$/i.test(value)
+  ) {
+    throw new Error("主题 ID 无效");
+  }
+  return value;
+}
+
+export function parseThemeResourceUrl(requestUrl: string) {
+  const url = new URL(requestUrl);
+  if (url.protocol !== "mdpdf:" || url.host !== "theme") {
+    return undefined;
+  }
+
+  let segments: string[];
+  try {
+    segments = url.pathname
+      .split("/")
+      .filter(Boolean)
+      .map((segment) => decodeURIComponent(segment));
+  } catch {
+    throw new Error("主题资源地址无效");
+  }
+  const [unsafeThemeId, ...assetSegments] = segments;
+  if (!unsafeThemeId || assetSegments.length === 0) {
+    throw new Error("主题资源地址无效");
+  }
+
+  return {
+    themeId: parseThemeId(unsafeThemeId),
+    assetPath: assetSegments.join("/")
+  };
+}