Initial commit: Craft2Prints with Stages 1-3

src/lib/currency.ts

@@ -0,0 +1,18 @@
+export type CurrencyCode = 'GBP' | 'USD' | 'EUR';
+
+// Prices are stored as an integer in GBP pence — that's the canonical/base currency
+// for this site. These rates are fixed approximations for customer-facing display
+// only; they are NOT live exchange rates and are NOT used for actual payment
+// amounts (checkout charges in GBP regardless of what's displayed here). Update
+// them periodically if you want display prices to stay roughly current.
+export const CURRENCIES: { code: CurrencyCode; symbol: string; rate: number; label: string }[] = [
+  { code: 'GBP', symbol: '£', rate: 1, label: 'GBP — British Pound' },
+  { code: 'USD', symbol: '$', rate: 1.27, label: 'USD — US Dollar' },
+  { code: 'EUR', symbol: '€', rate: 1.17, label: 'EUR — Euro' },
+];
+
+export function formatPrice(basePenceGBP: number, currency: CurrencyCode): string {
+  const info = CURRENCIES.find((c) => c.code === currency) ?? CURRENCIES[0];
+  const converted = (basePenceGBP / 100) * info.rate;
+  return `${info.symbol}${converted.toFixed(2)}`;
+}