init

src/utils/helpers.ts

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+// Utility functions
+
+export function generateId(): string {
+  if (typeof crypto !== 'undefined' && crypto.randomUUID) {
+    return crypto.randomUUID();
+  }
+  // Fallback for environments without crypto
+  return `id_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
+}
+
+export function formatDate(date: Date | string): string {
+  const d = typeof date === 'string' ? new Date(date) : date;
+  return d.toLocaleDateString('en-US', {
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+    hour: '2-digit',
+    minute: '2-digit',
+  });
+}
+
+export function truncateText(text: string, maxLength: number): string {
+  if (text.length <= maxLength) return text;
+  return text.substring(0, maxLength).trim() + '...';
+}
+
+export function stripHtml(html: string): string {
+  const tmp = document.createElement('div');
+  tmp.innerHTML = html;
+  return tmp.textContent || tmp.innerText || '';
+}
+
+export function parseFeedUrl(url: string): { host: string; path: string } | null {
+  try {
+    const parsed = new URL(url);
+    return {
+      host: parsed.hostname,
+      path: parsed.pathname,
+    };
+  } catch {
+    return null;
+  }
+}
+
+export function guessFeedUrl(baseUrl: string): string[] {
+  const commonFeedPaths = [
+    '/feed',
+    '/rss',
+    '/rss.xml',
+    '/feed.xml',
+    '/atom.xml',
+    '/atom',
+    '/opml',
+  ];
+  
+  try {
+    const url = new URL(baseUrl);
+    // Ensure trailing slash for path concatenation
+    const base = url.pathname.endsWith('/') ? url.pathname : `${url.pathname}/`;
+    
+    return commonFeedPaths.map((path) => `${url.origin}${base}${path}`);
+  } catch {
+    return [];
+  }
+}