增加法律信息板块

src/data/policy/index.ts

@@ -0,0 +1,60 @@
+import fs from "fs/promises";
+import path from "path";
+import type { Locale } from "@/lib/i18n";
+import { parseFrontmatter } from "@/data/news";
+import { markdownToHtml } from "@/lib/markdown";
+
+export const policySlugs = ["user-agreement", "privacy-policy", "disclaimer", "resource-pack"] as const;
+export type PolicySlug = (typeof policySlugs)[number];
+
+export type PolicyDocument = {
+  slug: PolicySlug;
+  title: string;
+  translationLabel: string;
+  body: string;
+  html: string;
+  markdownFile: string;
+};
+
+function isPolicySlug(slug: string): slug is PolicySlug {
+  return policySlugs.includes(slug as PolicySlug);
+}
+
+async function readPolicy(slug: PolicySlug, locale: Locale): Promise<PolicyDocument | null> {
+  const filePath = path.join(process.cwd(), "src", "data", "policy", locale, `${slug}.md`);
+
+  try {
+    const body = await fs.readFile(filePath, "utf-8");
+    const frontmatter = parseFrontmatter(body);
+    const title = frontmatter.title?.trim();
+    const translationLabel = frontmatter.translationLabel?.trim() || "AI translated";
+    const content = body.replace(/^---\r?\n[\s\S]*?\r?\n---\r?\n?/, "").trim();
+
+    if (!title || !content) return null;
+
+    return {
+      slug,
+      title,
+      translationLabel,
+      body: content,
+      html: markdownToHtml(content),
+      markdownFile: `src/data/policy/${locale}/${slug}.md`,
+    };
+  } catch {
+    return null;
+  }
+}
+
+export async function getPolicyCatalog(slug: string): Promise<Partial<Record<Locale, PolicyDocument>>> {
+  if (!isPolicySlug(slug)) return {};
+
+  const entries = await Promise.all(
+    (["zh-CN", "zh-TW", "en", "ja"] as Locale[]).map(async (locale) => [locale, await readPolicy(slug, locale)] as const),
+  );
+
+  return Object.fromEntries(entries.filter(([, document]) => document)) as Partial<Record<Locale, PolicyDocument>>;
+}
+
+export function getPolicySlugs() {
+  return policySlugs.map((slug) => ({ slug }));
+}