feat: extracts some repeated logic out into lib/ files

www/src/lib/txt.ts

@@ -0,0 +1,53 @@
+import fs from 'node:fs';
+import path from 'node:path';
+import yaml from 'js-yaml';
+import { getGitDate } from '../utils';
+
+export interface TxtFile {
+  name: string;
+  date: Date;
+  pinned: boolean;
+}
+
+export interface TxtConfig {
+  pinned?: string[];
+}
+
+export function getTxtDir(): string {
+  return path.join(process.cwd(), 'public/txt');
+}
+
+export function loadTxtConfig(): TxtConfig {
+  const configPath = path.join(getTxtDir(), 'config.yaml');
+  return fs.existsSync(configPath)
+    ? yaml.load(fs.readFileSync(configPath, 'utf8')) as TxtConfig
+    : {};
+}
+
+export function getTxtFiles(): TxtFile[] {
+  const txtDir = getTxtDir();
+  if (!fs.existsSync(txtDir)) return [];
+
+  const config = loadTxtConfig();
+  const pinnedSet = new Set(config.pinned || []);
+
+  return fs.readdirSync(txtDir)
+    .filter(file => file.endsWith('.txt'))
+    .map(name => ({
+      name,
+      date: getGitDate(path.join(txtDir, name)),
+      pinned: pinnedSet.has(name),
+    }))
+    .sort((a, b) => {
+      if (a.pinned && !b.pinned) return -1;
+      if (!a.pinned && b.pinned) return 1;
+      return b.date.getTime() - a.date.getTime();
+    });
+}
+
+export function getTxtFileNames(): string[] {
+  const txtDir = getTxtDir();
+  if (!fs.existsSync(txtDir)) return [];
+
+  return fs.readdirSync(txtDir).filter(file => file.endsWith('.txt'));
+}