first commit

backend/src/lib/utils.ts

@@ -0,0 +1,37 @@
+import { nanoid } from 'nanoid';
+
+export function generateId(): string {
+  return nanoid(21);
+}
+
+export function generateTicketCode(): string {
+  return `TKT-${nanoid(8).toUpperCase()}`;
+}
+
+export function getNow(): string {
+  return new Date().toISOString();
+}
+
+export function formatCurrency(amount: number, currency: string = 'PYG'): string {
+  return new Intl.NumberFormat('es-PY', {
+    style: 'currency',
+    currency,
+  }).format(amount);
+}
+
+export function calculateAvailableSeats(capacity: number, bookedCount: number): number {
+  return Math.max(0, capacity - bookedCount);
+}
+
+export function isEventSoldOut(capacity: number, bookedCount: number): boolean {
+  return bookedCount >= capacity;
+}
+
+export function sanitizeHtml(str: string): string {
+  return str
+    .replace(/&/g, '&')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#039;');
+}