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lib/activity.ts

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+import fs from 'fs';
+import path from 'path';
+
+export interface ActivityEntry {
+  id: string;
+  timestamp: string;
+  type: 'post' | 'notebook' | 'infosec' | 'project' | 'link' | 'update' | 'system';
+  message: string;
+  link?: string;
+}
+
+const activityFile = path.join(process.cwd(), 'content', 'activity.json');
+
+export function getActivity(): ActivityEntry[] {
+  if (!fs.existsSync(activityFile)) return [];
+  const raw = fs.readFileSync(activityFile, 'utf-8');
+  return JSON.parse(raw);
+}
+
+export function addActivity(entry: Omit<ActivityEntry, 'id' | 'timestamp'>) {
+  const entries = getActivity();
+  const newEntry: ActivityEntry = {
+    id: Date.now().toString(),
+    timestamp: new Date().toISOString(),
+    ...entry,
+  };
+  entries.unshift(newEntry);
+  fs.writeFileSync(activityFile, JSON.stringify(entries.slice(0, 500), null, 2));
+  return newEntry;
+}

lib/posts.ts

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+import fs from 'fs';
+import path from 'path';
+import matter from 'gray-matter';
+import { remark } from 'remark';
+import html from 'remark-html';
+
+const contentDir = path.join(process.cwd(), 'content');
+
+export interface Post {
+  slug: string;
+  title: string;
+  date: string;
+  excerpt: string;
+  tags: string[];
+  content?: string;
+  category: 'blog' | 'notebook' | 'infosec';
+}
+
+export function getPosts(category: 'blog' | 'notebook' | 'infosec'): Post[] {
+  const dir = path.join(contentDir, category);
+  if (!fs.existsSync(dir)) return [];
+
+  const files = fs.readdirSync(dir).filter((f) => f.endsWith('.md'));
+
+  return files
+    .map((filename) => {
+      const slug = filename.replace('.md', '');
+      const raw = fs.readFileSync(path.join(dir, filename), 'utf-8');
+      const { data } = matter(raw);
+      return {
+        slug,
+        title: data.title || slug,
+        date: data.date || '2024-01-01',
+        excerpt: data.excerpt || '',
+        tags: data.tags || [],
+        category,
+      };
+    })
+    .sort((a, b) => new Date(b.date).getTime() - new Date(a.date).getTime());
+}
+
+export async function getPost(
+  category: 'blog' | 'notebook' | 'infosec',
+  slug: string
+): Promise<Post | null> {
+  const filePath = path.join(contentDir, category, `${slug}.md`);
+  if (!fs.existsSync(filePath)) return null;
+
+  const raw = fs.readFileSync(filePath, 'utf-8');
+  const { data, content } = matter(raw);
+
+  const processed = await remark().use(html).process(content);
+
+  return {
+    slug,
+    title: data.title || slug,
+    date: data.date || '2024-01-01',
+    excerpt: data.excerpt || '',
+    tags: data.tags || [],
+    content: processed.toString(),
+    category,
+  };
+}
+
+export function getAllPosts(): Post[] {
+  return [
+    ...getPosts('blog'),
+    ...getPosts('infosec'),
+    ...getPosts('notebook'),
+  ].sort((a, b) => new Date(b.date).getTime() - new Date(a.date).getTime());
+}