初步

src/lib/posts.ts

@@ -0,0 +1,94 @@
+type MarkdownModule = {
+  frontmatter: Record<string, unknown>;
+  Content: unknown;
+  rawContent?: () => string;
+  file?: string;
+};
+
+export type BlogPost = MarkdownModule & {
+  title: string;
+  slug: string;
+  date: Date;
+  dateText: string;
+  tags: string[];
+  categories: string[];
+  summary: string;
+  href: string;
+};
+
+const modules = import.meta.glob<MarkdownModule>('/source/_posts/**/*.md', { eager: true });
+
+function asArray(value: unknown): string[] {
+  if (Array.isArray(value)) return value.map(String).filter(Boolean);
+  if (typeof value === 'string' && value.trim()) return [value.trim()];
+  return [];
+}
+
+function toDate(value: unknown): Date {
+  if (value instanceof Date) return value;
+  if (typeof value === 'string' || typeof value === 'number') {
+    const date = new Date(value);
+    if (!Number.isNaN(date.valueOf())) return date;
+  }
+  return new Date(0);
+}
+
+function formatDate(date: Date): string {
+  return new Intl.DateTimeFormat('zh-CN', {
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+  }).format(date);
+}
+
+function fallbackSlug(path: string): string {
+  return path
+    .split('/')
+    .pop()
+    ?.replace(/\.md$/, '')
+    .toLowerCase() ?? 'post';
+}
+
+function makeSummary(module: MarkdownModule): string {
+  const explicit = module.frontmatter.summary ?? module.frontmatter.description;
+  if (typeof explicit === 'string' && explicit.trim()) return explicit.trim();
+
+  const raw = module.rawContent?.() ?? '';
+  return raw
+    .replace(/```[\s\S]*?```/g, '')
+    .replace(/<[^>]+>/g, '')
+    .replace(/[#>*_`~\-\[\]\(\)]/g, '')
+    .replace(/\s+/g, ' ')
+    .trim()
+    .slice(0, 120);
+}
+
+export function getAllPosts(): BlogPost[] {
+  return Object.entries(modules)
+    .map(([path, module]) => {
+      const date = toDate(module.frontmatter.date);
+      const slug = String(module.frontmatter.abbrlink ?? fallbackSlug(path));
+      const title = String(module.frontmatter.title ?? slug);
+
+      return {
+        ...module,
+        title,
+        slug,
+        date,
+        dateText: formatDate(date),
+        tags: asArray(module.frontmatter.tags),
+        categories: asArray(module.frontmatter.categories),
+        summary: makeSummary(module),
+        href: `/posts/${slug}/`,
+      };
+    })
+    .sort((a, b) => b.date.valueOf() - a.date.valueOf());
+}
+
+export function getAllTags(): string[] {
+  return [...new Set(getAllPosts().flatMap((post) => post.tags))].sort((a, b) => a.localeCompare(b, 'zh-CN'));
+}
+
+export function getAllCategories(): string[] {
+  return [...new Set(getAllPosts().flatMap((post) => post.categories))].sort((a, b) => a.localeCompare(b, 'zh-CN'));
+}