Initial commit: spreewaldzeit + Dockerfile for Coolify (Next.js + Prisma/SQLite)

lib/utils.ts

@@ -0,0 +1,48 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+
+export function formatPrice(cents: number): string {
+  return new Intl.NumberFormat("de-DE", {
+    style: "currency",
+    currency: "EUR",
+    maximumFractionDigits: 0,
+  }).format(cents / 100);
+}
+
+export function formatDate(date: Date | string): string {
+  const d = typeof date === "string" ? new Date(date) : date;
+  return new Intl.DateTimeFormat("de-DE", {
+    day: "2-digit",
+    month: "short",
+    year: "numeric",
+  }).format(d);
+}
+
+export function formatDateShort(date: Date | string): string {
+  const d = typeof date === "string" ? new Date(date) : date;
+  return new Intl.DateTimeFormat("de-DE", {
+    day: "2-digit",
+    month: "2-digit",
+    year: "2-digit",
+  }).format(d);
+}
+
+export function nightsBetween(arrival: Date | string, departure: Date | string): number {
+  const a = typeof arrival === "string" ? new Date(arrival) : arrival;
+  const d = typeof departure === "string" ? new Date(departure) : departure;
+  return Math.round((d.getTime() - a.getTime()) / (1000 * 60 * 60 * 24));
+}
+
+export function parseJsonArray<T = string>(raw: string | null | undefined): T[] {
+  if (!raw) return [];
+  try {
+    const parsed = JSON.parse(raw);
+    return Array.isArray(parsed) ? (parsed as T[]) : [];
+  } catch {
+    return [];
+  }
+}