scaffold festival drink tracker (pnpm workspace, Fastify + SQLite, Preact tablet UI, admin)

client/src/api.ts

@@ -0,0 +1,39 @@
+import type {
+  Bar,
+  BarConfig,
+  CreateTransactionRequest,
+  CreateTransactionResponse,
+} from '@wutzcalc/shared';
+
+async function json<T>(res: Response): Promise<T> {
+  if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
+  return res.json() as Promise<T>;
+}
+
+export const api = {
+  bars: () => fetch('/api/bars').then(json<Bar[]>),
+  config: (barId: number) => fetch(`/api/config?bar=${barId}`).then(json<BarConfig>),
+  createTransaction: (body: CreateTransactionRequest) =>
+    fetch('/api/transactions', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(body),
+    }).then(json<CreateTransactionResponse>),
+};
+
+export function formatCents(cents: number): string {
+  const sign = cents < 0 ? '-' : '';
+  const abs = Math.abs(cents);
+  return `${sign}${(abs / 100).toFixed(2)} €`;
+}
+
+export function uuid(): string {
+  if (typeof crypto !== 'undefined' && 'randomUUID' in crypto) {
+    return (crypto as any).randomUUID();
+  }
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
+    const r = (Math.random() * 16) | 0;
+    const v = c === 'x' ? r : (r & 0x3) | 0x8;
+    return v.toString(16);
+  });
+}